Materials Engineer

1.In soi l Engineering the term “SOIL” includes

a . c l a y

b . g r a v e l

c . s a n d

d . a l l o f t h e p r e c e d i n g

2.The compressibi l ity of a f ine grained soi l is

a . h i g h

b . l o w

c . i t d e p e n d s u p o n t h e g r a i n s i z e

3.Sand has a greater load-carrying capacity than clay

a . t r u e

b . f a l s e

c . i t d e p e n d s o n g r a d a t i o n

d . i t d e p e n d s o n w a t e r c o n t e n t

4.The highest moisture content in the plastic consistency of fine-grained soil is the liquid limit

a . p l a s t i c l i m i t

b . s h r i n k a g e l i m i t

5.Compaction increases the strength of soi l by

a . e x p e l l i n g a i r f r o m i t s v o i d s

b.forcing soil particles into more intimate contact

c . b o t h a a n d b

6.Indicates a range of moisture content over which soil is plastic

a . p l a s t i c l i m i t

b . s h r i n k a g e l i m i t

c . p l a s t i c i t y i n d e x

7.Water content of an undisturbed soi l is cal led

a . o p t i m u m m o i s t u r e c o n t e n t

b.hygroscopic moisture content

c . n a t u r a l w a t e r c o n t e n t

8.In the performance of Moisture Density Relations Test, the equipment used is

a . l i q u i d l i m i t d e v i c e

b . s a n d - c o n e a p p a r a t u s

c . r a m m e r a n d m o l d

d . n o n e o f t h e a b o v e

9 . P e a t a n d m u c k a r e

a . f a i r s u b g r a d e s o i l s

b . s t a b l e s o i l s

c . u n s t a b l e s o i l s

d . g o o d s u b g r a d e s o i l s

10.The particle size distribution of a soil is determined bya . l i q u i d l i m i t t e s t  b . s i e v e a n a l y s i s t e s tc . p l a s t i c l i m i t t e s td . a n y o f t h e p r e c e d i n g

11.To prevent intrusion of soft subgrade material into the aggregate base or sub basea . r e i n f o r c e d e a r t h  b . r o c k b u t t r e s sc . g a b i o n sd . g e o t e x t i l e m a y b e u s e d

12. The CBR value is generally selected ata . 0 . 1 0  b . 0 . 0 3 7 5c . 0 . 0 5D . 0 . 2 0 p e n e t r a t i o n

13.One of the methods in improving the properties of a soil to make it suitable for a particular purpose isa . p a r t i c l e r e a r r a n g e m e n t  b . s o d d i n g o r s p r i g g i n gc . p a v i n gd . n o n e o f t h e p r e c e d i n g

14.A sample of saturated clay has a mass of 102.8 g. After oven drying, the same soil weighs 73.4 g. If the specific gravity is 2.74, its wet density, g/ml isa . 1 . 8 2 9  b . 1 . 8 2 5c . 1 . 8 2 7d . 1 . 8 3 0

15.The dry density, g/ml isa . 1 . 3 1 0  b . 1 . 3 0 6c . 1 . 3 0 0d . 1 . 3 0 9

16.Blown Asphalt are usually used for pavinga . t r u e  b . f a l s ec . i t d e p e n d s u p o n i t s d u c t i l i t y

17.A mixture of asphalt cement and water with emulsifying agent is calleda . R . C . c u t b a c k    b . M . C . c u t b a c k  c . A s p h a l t e m u l s i o nd . O x i d i z e d a s p h a l t

18.The a) Marshall Stability Test b) Immersion-Compression Test c) Job-Mix formula compares the compressive strength of dry and wet specimens of asphalt mixes.

19.The effective asphalt content is a) lower than b) higher than c) equal to the actual asphalt content.

20.Which of the following percent air voids is most preferable in bituminous mixturea . 0 %  b . 5 %c . 8 %

21.a) Viscocity b) solubility c) Flash point d) Extraction test determines the bitumen content of asphalt cement

22.a) Distillation b) Penetration c) Viscocity d) Ductility is the consistency test on solid asphalt.

23. a) Tack coat b) Prime coat c) Seal coat is the bituminous coating applied to an old concrete pavement to be used as base.

24. A Job-mix formula provides for close control of a . a s p h a l t c o n t e n t  b . a g g r e g a t e g r a d a t i o nc . b o t h a a n d b25.a) Flexibility b) Durability c) Stability d) Workability is the resistance of an asphalt pavementagainst weathering.26.The temperature of hot mixes being delivered should not be less than itsa . m i x i n g  b . a p p l i c a t i o nc . h e a t i n gd . c o m p a c t i o n t e m p e r a t u r e27.A Bituminous Seal Coat is usually applied with aggregatea . t r u e  b . f a l s ec.i t depends on the surface application28. The maximum specific gravity of an asphalt mix containing 6.0% asphalt by weight of mix is 2.6.If the specific gravity of an asphalt is 1.01, the specific gravity of the aggregate is equal toa . 2 . 6 5  b . 2 . 5 6c . 2 . 7 6d . 2 . 7 029.The weight in air of a core specimen taken from asphalt pavement is 4,128 g. If its SSD weight is4,137 g. and its weight in water is 2,237 g. Therefore, its bulk density isa . 2 . 4 2  b . 1 . 7 2c . 2 . 2 8d . 2 . 6 930.The bulk specific gravity of a sample of bituminous pavement taken from a newly rolled section is2.244. If the laboratory compacted specific gravity is 2.362 and the minimum compaction requirement is 95%, the pavement isa . s a t i s f a c t o r i l y r o l l e d  

b . o v e r c o m p a c t e dc . i n n e e d o f m o r e r o l l i n g

31.Concrete specimen molded in a 6” x 6” x 21” beam mold should be roded

a . 6 0  

b . 6 1

c . 6 2

d . 6 3 t i m e s

32.Quality determination of concrete coarse aggregate sample requires

a . a b r a s i o n t e s t  

b . s i e v e a n a l y s i s

c . s t a b i l i t y

d . b o t h a a n d b

33.Concrete fine aggregate should be tested for 

a . c o m p a c t i o n  

b . s t r i p p i n g

c . s t a b i l i t y

d . n o n e o f t h e p r e c e d i n g

34.Admixtures are used to

a . i m p r o v e w o r k a b i l i t y  

b . i n c r e a s e s t r e n g t h

c . r e t a r d i n i t i a l s e t t i n g

d . a l l o f t h e p r e c e d i n g

35.

a) Compressive strength

b) Flexural strength

c) Bond

d) All of the preceding will improve if water – cement ratio is lowered.

36.Angular coarse aggregate will require more

a . s a n d  

b . w a t e r  

c . b o t h a a n d b

d.coarse aggregate per unit volume of concrete.

37.Slump test could be used to detect

a . i n c r e a s e i n c e m e n t c o n t e n t  

b . i n c r e a s e i n w a t e r  

c . i n c r e a s e i n v o l u m e

d . i n c r e a s e i n a g g r e g a t e

38.Greatest net water is required in a concrete mix with

a . v e r y c o a r s e  

b . c o a r s e

c . f i n e

d . v e r y f i n e , f i n e a g g r e g a t e

39.If the concrete beam specimen is raptured during test outside the middle third, but within 5% of thespan length, the formula to be used in computing the stress is

a . R = P L / b d ^ 2

b . R = 3 P a / b d ^2c . R = P l a / b d ^240.Concrete mix should be in placia . 1 0 0 m i n  b . 9 0 m i nc.15 min, after the cement is added into the aggregates and water.

41.The fineness modulus is highest for

a . c o a r s e

b . v e r y c o a r s e

c . f i n e

d . v e r y f i n e , s a n d .

42.In molding concrete cylinder specimen, each layer should be rodded

a . 2 5

b . 5 6

c . 6 0

d . 1 0 0 t i m e s .

43.Concrete cylinder sample should be molded in

a.1

b . 2

c.3

d .

4 e q u a l l a y e r s .

44.Maintaining the water-cement ratio, the concrete containing

a . 5 0 . 0 m m

b . 3 7 . 5 m m

c . 1 9 . 0 m m

d.12.5 mm maximum size aggregate will develop the highest strength.

45.Paving concrete will need less

a . s a n d

b . w a t e r

c . c o a r s e a g g r e g a t e

d.both a & b, than that of structural concrete

.46.The maximum percentage of abrasion loss allowed for concrete coarse aggregate is

a . 4 0

b . 4 5

c . 5 0

47.For Bituminous Concrete Surface Course, if asphalt cement is used, the percentage based on theweight of aggregate should be

a . 3 t o 5 %

b . 5 t o 8 %

c . 6 t o 1 0 %

48.An aggregate base course of 21,600 m3 will require

a . 1 4

b . 1 5

c . 7 2 q u a l i t y t e s t s .

49.Coarse aggregate for Crushed Stone Aggregate Surface Course should have not less than

a . 4 0

b . 4 5

c . 5 0

d.60 with at least one fractured face

50.Crushed Gravel Base Course, Grading C, shall be compacted in layers of not more thana . 1 0 c m  b . 1 5 c m

c . 2 0 c m l o o s e t h i c k n e s s .51.An embankment to be constructed to a height of 65 cm will have a minimum of a.4 b . 5c . 6 l a y e r s .52.To give Bituminous Plant Mix Base Course greater to resistance to water a . ½ t o 1 %  b . 1 ½ t o 2 %c.2 – 3% hydrated lime should be added during mixing.53.The type of Bituminous Macadam Pavement isa . a s p h a l t c e m e n t  b . a s p h a l t e m u l s i o nc . r o c k a s p h a l td . e i t h e r a o r b .54.Prestressed Concrete Structures use concrete classa.A  b . Bc.Cd.P55.a) 5

b) 9 c) 3 pipes should be taken as sample to represent 225 reinforced concrete pipes.

56.Before placing the asphalt pavement, the gravel base course should bea . s e a l c o a t e d  b . t a c k c o a t e dc . p r i m e c o a t e d

57.Concrete used in reinforced concrete culvert pipe should generally have a compressive strength of aa . 1 6 . 5 4 M p a ( 2 4 0 0 )  b . 2 7 . 5 6 M p a ( 4 0 0 0 )c . 2 0 . 6 7 M p a ( 3 0 0 0 )d . 3 4 . 4 5 M p a ( 5 0 0 0 )

58.Concrete railings, pipes, and piles require the use of what class of concrete?a.A b . Bc.Cd.D

59.Steel bars for concrete reinforcement is tested for itsa . t e n s i l e  b . c o m p r e s s i o nc . b e n d i n gd . b o t h a a n d c f o r p r o p e r t i e s .

60.Aggregate Base Course with a volume of 112,000m3 will have a minimum number of a . 7 4  b . 7 5c . 5 6d . 3 7 4 q u a l i t y t e s t s .61.Which plasticity index is most suitable for aggregate base course?a.5  b . 1 0c . 1 5d.50 The fraction passing the 0.425 mm (No.40) shall have a liquid limit not greater than 25 and  plasticity index not greater than 6.

62.The specified flexural strength for paving concrete isa . 3 5 0  b . 4 0 0c . 5 2 5d . 3 0 063.The sample of 12.5 mm diameter steel bar to be submitted for test should be at leasta . 2 0 c m  b . 4 0 c mc . 1 0 0 c md . n o n e o f t h e a b o v e64. a) Third point loading

b) Three-edge bearing test c) Mid-span loadingd) none of  the above

is the method used in determining the strength of concrete pipes.65 Prestressed concrete requires the use of Classa.A b . Bc.C d.Dconcrete66.If an asphalt pavement will be constructed over an old existing concrete pavementa . p r i m e c o a tb . t a c k c o a tc . s e a l c o a td.mortar coat should be applied to the concrete pavement.67.For bituminous concrete mixes, the asphalt material may either be asphalt cement or asphalt emulsion

a . t r u e  b . f a l s e

68.Coarse Aggregate for Bituminous Macadam Pavement should be a . c r u s h e d g r a v e l o r s t o n e  b . n a t u r a l g r a v e lc . b o t h a a n d bd . n o n e o f t h e a b o v e

69/70. Tests for coarse aggregate include a . a b r a s i o n  b . m o r t a r s t r e n g t h

71/72. Tests for fine aggregate for concrete includea . g r a d a t i o nb . m o r t a r s t r e n g t hc . a b r a s i o nd . a l l o f t h e p r e c e d i n g73.Unless otherwise specified in the special provision, the type of portland cement used in pavingconcrete shall bea . T y p e I  b . T y p e I Ic . T y p e I I Id . T y p e I V74.During construction of a road project, if all the materials to be used are tested for quality, inspectionis no longer requireda . t r u eb . f a l s e75.The degree of compaction of an embankment in our present Specifications is based ona . C B R m e t h o d  b.Unconfined compression testc . A A S H T O D e s i g n a t i o n T - 1 8 0d . B u l k S p e c i f i c G r a v i t y76/77. Under Excavation for Structure, Item 106, the backfilling operation shall be done in20 cmlooselayer and compacted to at least95 Percent.78.Soils are natural aggregates of minerals connected by strong and permanent cohesive forcesa . t r u eb . f a l s e79.The boundary between sand and gravel isa . 0 . 4 2 5 m m ( # 4 0 )  b . 4 . 7 5 0 m m ( # 4 )c . 2 . 0 0 m m ( # 1 0 )d . 0 . 0 7 5 m m ( # 2 0 0 )8 0 . Aa) sandy clayb) clayey sand c) sand clay d) none of the preceding is a soil which exhibits the properties of a clay but contains an appreciable amount of sand.

81.Plasticity test is done on soils passing

a . 0 . 4 2 5 m m ( # 4 0 )  b . 2 . 0 0 m m ( # 1 0 )c . 0 . 0 7 5 m m ( # 2 0 0 ) s i e v e .

82.a) Soil compaction b) mechanical analysis c) In-place unit weight d) CBR is the process wherebysoil particles are contained more closely together through a reduction in the air voids, generally bymechanical means.

83.Soils containing more than 35% passing 0.075mm (#200) sieve are classified under 

a . s i l t - c l a y m a t e r i a l s b . g r a n u l a r m a t e r i a l s

c.i t depends on the plasticity index

84.a) Surface drainage b) chemical admixtures c) compactiond) subsoil drainageis provided for the purpose of counteracting moisture movement within the structure either by seepage or capillaryaction.

85.A subgrade soil with a CBR value of a) 5% b) 15% c) 30%d) 3%will require a thicker layer of subbase and base course.86.a) Particle arrangement b) sodding or sprigging c) paving d) flattening is one of the methods of stabilizing inferior soils.

87.The physical and engineering properties of soils may be improved bya . c o m p a c t i o n  b . s t a b i l i z a t i o nc . b o t h a a n d bd . n e i t h e r a n o r b .88.Water content of soils is generally based on thea . t o t a l w e i g h t o f s o i l  b . t o t a l v o l u m e o f s o i lc . w e i g h t o f s o l i d sd . n o n e o f t h e p r e c e d i n g

89.The density to which a soil can be compacted is related toa . c o m p a c t i v e e f f o r t s  b . w a t e r c o n t e n tc . b o t h a a n d bd . n o n e o f t h e p r e c e d i n g90.Disturbed samples may be used for a . s i e v e t e s t  b . l i q u i d l i m i tc . c o m p a c t i o n t e s td . a n y o f t h e p r e c e d i n g

91.A soil with a Group Index of 5 is stronger than another with a Group Index of 10a . t r u e  b . f a l s ec . i t d e p e n d s o n t h e w a t e r c o n t e n t92. a) Water content b) void ratioc) degree of saturationd) porosity determines the relative amount of water in the voids.

93a) Rock asphalt b) Asphalt emulsion

c) asphalt cement d) cutback asphalt is an asphalt formed by natural process of evaporation.

94. Uncrushed aggregates are preferable than crushed aggregates for bituminous mixturesa . t r u e  b . f a l s ec. it depends on the type of bituminous material

95. The apparatus used in determining the consistency of liquid asphalt is thea . f l o w m e t e r  

b . v i s c o m e t e rc . p e n e t r o m e t e r  d . p y c n o m e t e r  96.a) Solidb) liquidc) Blown d) hot asphalt is preferable for bituminous prime coat.97.a) Distillationb) Extraction c) Penetration d) Solubility is the test used in determining amount of asphalt cement in a liquid asphalt.

98.a) Asphalt cement b) cut-back asphaltc) asphalt mixesd) asphalt emulsion are usually tested for extraction.

99.Extraction test is the procedure used for separatinga.the asphalt from water in emulsified asphaltb.asphalt from mineral aggregatesc . a s p h a l t f r o m k e r o s e n e s o l v e n td.asphalt from gasoline solvent

100. The optimum asphalt content obtained in a Marshall Stability test is the average of the asphalt contentof the Maximum Stability, Maximum density anda . M a x i m u m f l o w  b . M a x i m u m a i r v o i d sc . 4 % a i r v o i d sd . 4 % f l o w

101.a) VMA b) Air voids c) Permeable voids are intergranular void spaces between aggregate particles.

102. The main difference between a bulk measured specific gravity of a bituminous mixtures and its maximum measured specific gravity is thea . w e i g h t o f t h e v o i d s  b . w e i g h t o f t h e a s p h a l tc . v o l u m e o f t h e v o i d sd . v o l u m e o f t h e a g g r e g a t e s

103.a) Asphalt cement b) emulsified asphalt c) Rapid curing d) medium curing cut-back is the best type of asphalt to be used for hot mixes.

104.A bituminous coating applied in an existing road prior to laying of a bituminous surface overlay isa. prime coatb tack coatd . s e a l c o a t

105.The distance traveled by a standard penetration needle on a prepared sample of asphalt under  conditions for normal penetration is 8.6 mm. The material isa . 4 0 – 5 0b . 8 5 – 1 0 0

c . 1 2 0 – 1 5 0d . 2 0 0 – 3 0 0 p e n e t r a t i o n g r a d e

106.The maximum specific gravity of an asphalt mix containing 6.0% asphalt by weight of mix is 2.5. if the specific gravity of the asphalt is 1.01, the specific gravity of the aggregate is equal toa . 2 . 6 5  b . 2 . 5 6c . 2 . 7 6d . 2 . 7 0

107.A job-mix formula provides for close control of a . a g g r e g a t e g r a d a t i o n  b . a s p h a l t c o n t e n tc . b o t h o f t h e md . n e i t h e r o f t h e m

108.The desired property of fresh concrete isa . s t r e n g t h  b . d u r a b i l i t yc . w o r k a b i l i t yd . w a t e r t i g h t n e s s

109.The sieve used in the separation of aggregates after the abrasion test isa . 1 . 7 0 m m ( N o . 1 2 )  b . 0 . 4 2 5 m m ( N o . 4 0 )c . 4 . 7 5 m m ( N o . 4 )d . 0 . 0 7 5 m m ( N o . 2 0 0 )

110. Normally, concrete mix witha) 0.75 b) 0.35 c) 0.50 d) 0.45 water-cement ratio will develop thelowest strength.

1 1 1 . T h e m o s t i m p o r t a n t s i n g l e f a c t o r w h i c h a f f e c t s t h e q u a l i t y o f c o n c r e t e i s

a . c e m e n t c o n t e n t  b . a g g r e g a t e g r a d a t i o nc . w a t e r - c e m e n t r a t i od . a g g r e g a t e q u a l i t y

1 1 2 . P a v i n g c o n c r e t e w i l l n e e d l e s sa . s a n d  b . w a t e r  c . c o a r s e a g g r e g a t ed.both a and bthan that of structure concrete.

1 1 3 . C o n c r e t e s p e c i m e n m o l d e d i n a 6 ” x 6 ” x 2 1 ” b e a m s h o u l d b e r o d d e da . 6 0  b . 6 1c . 6 2d . 6 3

1 1 4 . Q u a l i t y d e t e r m i n a t i o n o f c o n c r e t e c o a r s e a g g r e g a t e s a m p l e r e q u i r e sa . a b r a s i o n t e s t  b . s i e v e a n a l y s i sc . s t a b i l i t yd . b o t h a a n d b

1 1 5 . C o n c r e t e m i x s h o u l d b e i n p l a c ea . 1 0 0 m i n u t e  b . 1 2 0c . 1 5d. 90 after the cement is added into the aggregate and water

1 1 6 . C o n c r e t e b e a m s p e c i m e n s f o r p a v i n g c o n c r e t e a r e m o l d e d i na . 2 e q u a l l a y e r s

  b . 3 e q u a l l a y e r sc . 4 e q u a l l a y e r sd . a n y o f t h e p r e c e d i n g

1 1 7 . A m i n i m u m c e m e n t f a c t o r o f  a . 7 . 5b . 8 . 5c . 9 . 5d.10.0 bags/cubic meter of concrete is required for paving concrete (Based on the 94 lbs. Bag of  cement)

1 1 8 . T h e v o l u m e o f t h ea . c o n c r e t e  b . c e m e n tc . a i r  d.all of the preceding can be calculated by performing the unit weight test on the fresh concrete.

1 1 9 . T h e u s e d o f m a n u f a c t u r e d f i n e a g g r e g a t e w i l l g e n e r a l l y r e q u i r e m o r ea . m i x i n g w a t e r  b . f i n e a g g r e g a t ec . c o a r s e a g g r e g a t ed . b o t h a a n d b .

1 2 0 . T h e t w o ( 2 ) m a j o r c o m p o n e n t s o f c o n c r e t e a r ea.paste and mineral aggregates  b . c e m e n t a n d w a t e r  c . w a t e r a n d c o a r s e a g g r e g a t e s

1 2 1 . T h e c o a r s e r t h e f i n e a g g r e g a t e , t h e h i g h e r t h e f i n e n e s s m o d u l u sa . y e s  b . n oc . d e p e n d s o n g r a d i n g t e s t

1 2 2 . T h e m o r e t h e c o n c r e t e i s e x p o s e d , t h e g r e a t e r t h e r a n g e o f m o v e m e n t i sa . t r u e  b . f a l s ec. i t depends upon the type of cement

1 2 3 . T h e s a m p l e s o f R S B t o b e s u b m i t t e d f o r t e s t s h o u l d b e a t l e a s ta . 2 0 c m  b . 4 0 c mc . 1 0 0 c m

1 2 4 . T h e e f f i c i e n t c o m p a c t i o n , t h e e m b a n k m e n t m a t e r i a l s h o u l d a t t h e t i m e o f r o l l i n g b ea . d r y  b . w e tc.at optimum moisture content

125. a) 15,000 kgb) 10,000 kgc) 5,000kg of 12.5mm diameter steel bar for concrete reinforcement isthe maximum quantity that a sample can represent.

1 2 6 a . )Rock asphaltb) asphalt emulsion c) Asphalt cement d) Cut-back asphalt is anasphalt formed by natural process of evaporation.

127.Uncrushed aggregates are preferable than crushed aggregates for bituminous mixturesa . t r u eb . f a l s ec.i t depends on the type of bi tuminous material .

128.The apparatus used in determining the consistency of liquid asphalt is thea . f l o w m e t e r  b . v i s c o m e t e rc . p e n e t r o m e t e r  d . p y c n o m e t e r  

129. a) Solidb) liquidc) blown d) hot asphalt is preferable for bituminous prime coat.

130.a) Distillation b) Extraction c) Penetration d) solubility is the test used in determining the amount of asphalt cement in a liquid asphalt.

1 3 1 . a ) A s p h a l t c e m e n t b ) C u t - b a c k a s p h a l tc)Asphalt mixesd) Asphalt emulsion areusually tested for extraction.

132.Extraction test is the procedure used for separatinga.the asphalt from water in emulsif ied asphaltb.asphalt from mineral aggregatesc . a s p h a l t f r o m g a s o l i n e s o l v e n td.asphalt from kerosene solvent .

133.a) Dist i l lat ion b) Viscosityc) Flash pointd) Softening point indicated the safe workingtemperature of the asphalt.

134.The optimum asphalt content obtained in a Marshall Stability Test is the average of the asphalt content of the Maximum stability, maximum density anda . m a x i m u m f l o w  b . m a x i m u m a i r v o i d sc . 4 % a i r v o i d sd . 4 5 f l o w 135.a) VMAb) Air voids c) Permeable voids are intergranular void spaces between aggregate particles.

1 3 6 .a) Asphalt cementb) Emulsified asphalt c) rapid curing cut-back d) medium curing cut- back is the best type of asphalt to be used for hot mixes.

137.The field density of a bituminous pavement shall not be less thana . 9 2 %b . 9 5 %c.98 % of the specific gravity of the laboratory compacted specimen.

138.For ITEM 311 PCC pavement, coarse aggregate shall have a mass percent of wear not exceedinga . 5 0 %b . 4 0 %c . 4 5 %d.60 % when tested by AASHTO T- 96

139.Plasticity Index for Aggregate Surface Course isa . n o t g r e a t e r t h a n 6  b . n o t g r e a t e r t h a n 2 5c . 4 t o 9d . 1 2 .

140.At least one (1) set of 3 concrete cylinder samples shall be taken froma . 5 0b . 7 5c . 1 0 0d.150 cubic meter of each class of concrete or fraction thereof, placed each day.

141.Fine aggregates used in concrete pavement shall contain not more thana . 1 . 5b.3c.4d.1 percent of material passing the 0.075mm sieve by washing.

142.The degree of compaction required for embankment is at leasta . 1 0 0  b . 9 0c . 9 5d.85 percent of the maximum density as determined by AASHTO T-90 Method.

143.Requirement of PCCP Constructiona.opening to traffic after 14 days the concrete was placed b.opening to traffic after 28 days the concrete was placedc.a compressive strength of 25.08 Mpa or mored . n o n e o f t h e a b o v e .

144.Roadway embankment in earth material shall be placed and compacted in horizontal layers not excedinga . 1 5 0 m mb . 2 0 0 m mc . 1 0 0 m md.250 mm loose requirement, before the next layer is placed.

145.Steel bars for concrete reinforced is tested for itsa . t e n s i l e  b . c o m p r e s s i v ec . y i e l dd . b o t h a a n d c .  

146.To give Bituminous Concrete Surface Course greater resistance to water  a . 2 - 3 %  b . 1 ½ - 2 %c . ½ - 1 %d.4 – 5 % hydrated l ime should be added.

147.In Aggregate Subbase Course, the degree of compaction of each layer shall continue until a fielddensity of at leasta . 1 0 0b . 9 5c . 9 0 p e r c e n t o f t h e m a x i m u m d r y d e n s i t y d e t e r m i n e d i n a c c o r d a n c e w i t h A A S H T O T - 1 8 0 , Method D has been attained.

148.The maximum percentage wear allowed for Aggregate Subbase Course in a coarse portion retainedon a 2.00mm (No. 10) sieve isa . 4 5b . 5 0c . 4 0d.55 percent by Los Angeles Abrasion Test determined by AASHTO T-96.

149.In manufacture of culvert pipes, the class of concrete used isa . C l a s s “ C ”  b . C l a s s “ B ”c . C l a s s “ A ”d . C l a s s “ P ”

150.For Bituminous Concrete Surface Course, if Asphalt cement is used, the percentage based on theweight of aggregate should bea . 3 t o 5 %b . 5 t o 8 %c . 6 t o 1 0 %d . 4 . 5 t o 8 %

151.Coarse aggregate for Crushed stone Aggregate Surface Course should have a mass percent of notmore thana . 4 0 %  b . 4 5 %c . 6 0 %d.50 %of the part icle retained on the 4.75mm (No.4) sieve and shall have at least one (1) fractured face.

152.Before placing the asphalt pavement, the gravel base course should bea . s e a l c o a t e d  

b . t a c k c o a t e dc . p r i m e c o a t e d

153.Prestressed Concrete structures uses concrete of classa.A b . Bc.Cd.P

154.An aggregate base course of 21,600m3 will requirea . 1 4b . 2 5c . 7 2 ?d . 4 0

155.An embankment to be constructed to a height of 600mm will have a minimum number of  a.4 b . 5c.3d . 6 l a y e r s

156.Aggregate base course with a volume of 112,000 m3 will have a minimum number of  a . 7 4b . 7 5c . 5 6d . 6 2 q u a l i t y t e s t s .

157.A portland cement concrete pavement, 6.5m wide and 23 cm. thick will be constructed for a total  paved area of 165,000 m3. Angular coarse aggregate will be used. If pavement will be opened totraffic 14 days.a.how many bags of cement will be required for Class “A” concrete? b.How many quality tests are required for the cement?c.How many quality and grading tests each are required for the coarse and fine aggregates?d.How many sets of concrete beam samples will be required?Vconcrete = 165000 x 0.23 = 37,950 m3a. cement = 37950 x 9.1 = 345,345 bags b QT of cement = 345,345/2000 = 173c.VFA = 37950 x 0.54 = 20493 ; QFA = 20493/1500 = 14 ; GFA = 20493/75 = 274VCA = 37950 x .68 = 25,886 ; QCA = 25806/1500 = 18 ; GCA = 25806/75 = 345d . 3 7 9 5 0 / 7 5 = 5 0 6 s e t s

158.Per our present Specifications for Highways and Bridges, including amendments, it is mandatiry toopen PCCP to traffic not later thana . 1 4 d a y s a f t e r p o u r i n g  b . 2 1 d a y s a f t e r p o u r i n gc . 7 d a y s a f t e r p o u r i n gd . 2 8 d a y s a f t e r p o u r i n g

159.For 850 m2 of concrete paved in one daya.3  b . 2c.1 sets of concrete beam samples should be taken and tested for strength (thickness of pavement= 0.23 m).

160.For 4050 m3 concrete coarse aggregatea.6 b . 5c.3d.4 samples should be submitted for quali ty tests .

161.The coarse aggregate of Item 201, Aggregate Base Course shall have a percentage of wear of notmore thana . 4 0 %  b . 4 5 %c . 5 0 %d.60 % as determined by Los Angeles Ratt ler Test .

162.The rate of application of emulsified asphalt used as bituminous prime coat isa . 0 . 5 t o 1 . 0 l i t e r  b . 1 . 0 t o 1 . 5 l i t e r  c .1.5 to 2.0 l i ter per square meter.

163.Steel bars for concrete reinforcement is tested for itsa . t e n s i l e

  b . c o m p r e s s i o nc . b e n d i n gd.both a and c properties.

164.For 250 gallons of Red Lead Painta.1 b . 2c.3samples should be submitted for quality test.

165.The number of samples of structural steel (reduced section) required for 38,000 kg. Isa.1 b . 2c.3

166.a.) Third - point loading b.) mid – span loading c.)three – edge bearingis the method used indetermining the strength of concrete pipes.

167.An aggregate base course of 23750 m3 will requirea . 5 0  b . 2 0c.16quality tests.

168.The Plasticity Index of aggregate base course should not be greater thana . 1 2b.6c . 1 0d.8

169.Concrete Hollow Blocks are tested for itsa . c o m p r e s s i o n  b . a b s o r p t i o n a nd d i m e n s i o nc . t e n s i l ed . b o t h a a n d b .  

170.Item 306 is cal leda . B i t u m i n o u s S u r f a c e T r e a t m e n t  b.Bituminous Road Mix Surface Coursec.Bituminous Plant Mix (Stockpile Maintenance mixture)d.Bituminous Penetrat ion Macadam Pavement

171.In the preparation of an asphalt design mix intended for Item 310, the proportion of bituminousmaterial (asphalt cement) on the basis of total dry aggregates shall be from:a . 4 t o 8 %  b . 3 t o 5 %c . 5 t o 7 %d . 5 t o 8 %172.Item -------- includes general requirements that are applicable to all types of bituminous plant mix surface courses irrespective of gradation of aggregates or kind and amount of bituminous material.a . I t e m 3 0 6b . I t e m 3 0 7c . I t e m 3 0 8d . I t e m 3 1 0

173.---------- is the result of asphalt layer instabil i ty or granular base or subgrade weakness. The  pavement usually twist out of shape.a . d i s i n t e g r a t i o n  b . u p h e a v a lc . d i s t o r t i o nd . b l e e d i n g

174. ---------- the localized upward displacement if a pavement due to swelling of the subgrade or some  portion of the pavement structure.a . u p h e a v a l  b . e d g e c r a c k i n gc . r a v e l i n gd . d e p r e s s i o n

1 7 5 I t e m - - - - - - - - - - c o n s i s t o f f u r n i s h i n g a n d p l a c i n g o n e o r m o r e c o u r s e s o f g r a d e d a g g r e g a t e s and one or more application of bituminous material followed by a seal coat with cover aggregatesconstructed in a prepare base is:a . 3 0 3  b . 3 0 4c . 3 0 5d . 3 0 6

1 7 6 . A n a s p h a l t c e m e n t s u b m i t t e d i n t h e l a b o r a t o r y f o r q u a l i t y t e s t s h o u l d a l w a y s h a v e a correspondinga . J o b m i x f o r m u l a  b . T e s t r e p o r tc . S a m p l e c a r dd.Minimum test ing requirements

1 7 7 . I f a n a s p h a l t p a v e m e n t w i l l b e c o n s t r u c t e d o v e r a n o l d e x i s t i n g c o n c r e t e p a v e m e n t , - - - - - - - - - - should be applied to the pavement.a . t a c k c o a t  b . p r i m e c o a tc . s e a l c o a td . m o r t a r c o a t

178.The amount of emulsif ied asphalt to be added in a Bituminous Plant-Mix Surface Course, Cold Laid (Item 308) shall be ------------ mass percent, total dry aggregate basis:a . 4 t o 8  b.5 to 10 NOTE: If MC is used the proportion of bituminous material on the basis of c.6 to 10 total dry aggregate shall be from 4.5 to 7.0 %.d . 7 t o 1 2

179.------------ test is measure by the distance to which i t wil l elongate before breaking when two (2) ends of a briquet with specimen are pulled apart at a specified speed and temperature.a . p e n e t r a t i o n  b . s o l u b i l i t yc . d u c t i l i t yd . v i s c o s i t y

1 8 0 . A n o t h e r n a m e f o r h o t a s p h a l t i s - - - - - - - - - - -a . b i t u m i n o u s a s p h a l t

b . a s p h a l t c e m e n tc . e m u l s i f i e d a s p h a l td . b l o w n a s p h a l t

181.In cutback asphalt , medium curing type is a combination of the fol lowinga . a s p h a l t c e m e n t a n d r o a d o i l sb.asphalt cement and kerosenec . a s p h a l t c e m e n t a n d g a s o l i n ed.asphalt cement and emulsif ier  

182.------------ test determines the amount of asphalt present in a bi tuminous mixa . d i s t i l l a t i o nb . e x t r a c t i o nc . s o l u b i l i t yd . c o m p r e s s i o n

183.The softness and hardness of an asphaltic material can be determined by -------- test.a . s o f t e n i n g p o i n t  b . l o s s o n h e a t i n gc . p e n e t r a t i o nd . d i s t i l l a t i o n

184. The temperature of bituminous hot mix delivered in the project site should not be less than its ------- temperature

.a . m i x i n gb . c o m p a c t i o nc . m o l d i n gd . s p r e a d i n g

184.Resistance to deformation of bi tuminous mixture is measured by -----------a . f l o w i n d e x  b . i n d e x o f r e t a i n e d s t r e n g t hc . d u c t i l i t y t e s td . e x t r a c t i o n t e s t

185.The apparatus used in determining the grade of asphalt cement is:a . h y d r o m e t e r    b . p e n e t r o m a n o m e t e r  c . p e t r o n m e t e r  d . p e n e t r o m e t e r

186.In an Immersion-Compression test, molding of specimen is done into ------- layer/s.a.1b.2c.3 NOTE: In Marshall Stability, molding of specimen is done intod . 4 o n e ( 1 ) l a y e r .

187.The actual cementing power in asphalt is cal led the -----------

-a . p e t r o l e n e  b . a s p h a l t e n ec . b i t u m e nd . r e s i n

188.------------- test indicates the temperature in which an asphalt cement may be heated without the danger of catching fire. It is used as criterion in eliminating fire hazards.a . s o f t e n i n g p o i n tb . f l a s h p o i n tc . l a s e r p o i n td . h e a t i n g p o i n t

189.An asphalt pavement needs sufficient -------- to avoid f lushing or bleeding.a . c o m p a c t i o nb . a i r v o i d sc . b i n d e r  d . m i n e r a l f i l l e r  

190.A job – mix formula provides for close control of:a . a s p h a l t c o n t e n t  b . a g g r e g a t e g r a d a t i o nc.temperature of asphalt , aggregate and mixd . a l l o f t h e a b o v e

191.The thinnest and most f luid grade of medium curing cutback asphalt is :a . M C – 8 0 0  b . M C – 2 5 0c.MC – 70 NOTE: For MC, the higher the grade the thicker  d . M C – 3 0

192.The amount of asphalt in a typical asphalt emulsion is:a . 4 0 %  b.50 % NOTE: After distillation the amount of asphalt (residual) retained shouldc.60 % at least 60 %.d . 7 0 %

1 9 3 . A n o t h e r n a m e f o r j o i n t f i l l e r i s :a . a s p h a l t c e m e n t  b . c u t b a c k a s p h a l tc . m i n e r a l f i l l e r  d . b l o w n a s p h a l t

194.The type of asphalt ic material that is usually classif ied by i ts viscosi ty is:a . l i q u i d a s p h a l t  b . b l o w n a s p h a l tc . r o c k a s p h a l td . l a k e a s p h a l t

195.Item 310, Bituminous Surface Course, Hot Laid provides an air voids between:a . 3 – 5 %  b . 5 – 7 %c . 5 – 8 %d . 8 – 1 0 %

196.Emulsif ied asphalt that has a posi t ive charge part icle is usually classif ied:a . a n i o n i cb . c a t i o n i cc . p o z z o l a n i cd . u l t r a s o n i c

197.The characteristics of a bituminous mix that indicates resistance to disintegration is called:a . s t a b i l i t y  b . f l e x i b i l i t yc . d u r a b i l i t yd . i n t e g r i t y

198.The coarse aggregates used in bi tuminous mix are those retained at s ieve No.a.8  b . 1 0c . 3 0d . 2 0 0

199.---------- test compares the compressive strength of dry and wet specimen of bituminous mixa . m a r s h a l l s t a b i l i t yb . i m m e r s i o n - c o m p r e s s i o nc . e x t r a c t i o nd . b u l k s p e c i f i c g r a v i t y

2 0 0 . I n i t e m 3 1 0 , b i t u m i n o u s S u r f a c e C o u r s e , H o t l a i d r e q u i r e s 7 0 % m i n i m u m i n d e x o f r e t a i n e d strength (IRS). In the immersion-compression test, the dry stability is about 900 psi. Based onthe data, the wet stability should be at least ------- psia . 2 7 0 b.630 Wet stabilityc.1286 NOTE: IRS = ----------------- X 100d. 1500 Dry stability

201.A compacted bituminous pavement shall have a minimum density of equal to or greater than –a . 8 5 %  b.90 % NOTE: The compacted pavement shall have a density equal to, or greater than 95c.95 % mass percent of the density of a laboratory specimen.d . 1 0 0 %

202.The rate of application of emulsified asphalt used as tack coat, should be within the range of  a . 0 . 2 – 0 . 5 l i t e r / m 2  b.0.2 – 0.7  NOTE: The rate of application of either the Rapid Curing or thec.0.15 – 0.7 Emulsified asphalt shall be within the range of 0.2 to 0.7d.1.0 – 2.0 liter/m2, the exact rate

as determined by the Engineer.

203.The type of asphalt ic material that is being referred to by penetrat ion grade is:a . e m u l s i f i e d a s p h a l t  b . c u t b a c k a s p h a l tc . a s p h a l t c e m e n td . m a s t i c a s p h a l t

204.The optimum asphalt content obtained in a marshall s tabil i ty test is the average of the asphalt content of maximum stability, maximum density anda . m i n i m u m f l o w i n d e x  b . m a x i m u m V M Ac . 4 % o r d e s i g n e d a i r v o i d sd . m a x i m u m V F A

205.The service performance of an asphalt pavement is greatly influenced by:a . g r a d e o f a s p h a l t  b . q u a n t i t y o f a s p h a l tc . a a n d bd . n o n e o f t h e a b o v e

206.In bi tuminous mixture, aggregates account for 92 % to 95 % of the weight of the mixture, while asphalt ( the binder of the aggregates ) accounts for ---------------a . 3 – 5 % b.5 – 8 %  NOTE: The proportion of bituminous material on the basis of totalc.5 – 10 % dry aggregate, shall be from 5.0 to 8.0 mass percent.d . 7 – 1 0 %

207.In asphalt pavement, prior to acceptance, a sample of ful l depth, 150mm x 150mm or 100mm diameter shall be taken by a saw or core drill for -------- testa . t h i c k n e s s d e t e r m i n a t i o n  b . d e n s i t yc . s t a b i l i t yd . a a n d b

208.In an asphalt pavement construction, after spreading bituminous mix, compaction wil l fol lowwhere rol l ing shall begin at the sides and proceed longitudinally paral lel toward the road centerline, each trip overlapping ------- of the roller width, gradually progressing to the crown of the roada.½  b . 1c . 1 ½d . 2 . 0

209.The control of temperature during the mixing and compaction is of great significance in the ---- of the resulting pavementa . s t r e n g t h  b . s k i d r e s i s t a n c ec . f l e x i b i l i t yd . a l l o f t h e a b o v e

210.based on the minimum test ing requirements for I tem 309, Bituminous Plant Mix, General , one quality test for asphaltic material requires for every ------ tonnes or fraction thereof.a . 4 0  b . 5 0c . 6 0d . 7 0

211.The test in emulsif ied asphalt which determines the resistance of the emulsion to break when mixed with mineral aggregatesa . s o l u b i l i t y  b . s i e v e t e s tc . c e m e n t m i x i n gd . s t o r a g e s t a b i l i t y

212.What I tem in the DPWH standards and specificat ion is Bituminous Tack Coat?a . 3 0 1b . 3 0 2c . 3 0 3d . 3 0 4

213.In identifying project location intended for asphalt pavement, which of the fol lowing cri teria is not appropriate to recommend?a.drainage faci l i t ies is well-maintained  b. location is not a typhoon belt areac . e x i s t i n g b a s e c o u r s e i s s t a b l ed . f l o o d - p r o n e s e c t i o n

214.An asphalt cement can be a good bituminous binder material for I tem:a . 3 0 1  b . 3 0 2c . 3 0 8d . 3 1 0

215.Which of the fol lowing bituminous material is best recommended for seal ing weakened plane and construction joints of the PCCP.a . a s p h a l t c e m e n t  b . e m u l s i f i e d a s p h a l tc . c u t b a c k a s p h a l td . j o i n t f i l l e r a s p h a l t

216.The primary quali ty control mechanism for the production of asphalt mixtures which wil l have a high degree of uniformity that will satisfy job requirements is called:a . m a r s h a l l s t a b i l i t y t e s tb . j o b m i x f o r m u l ac.immersion – compression stabil i ty testd . a a n d b

2 1 7 . W h e n a c o m p l e t e d a s p h a l t p a v e m e n t e x h i b i t s t o o m u c h v o i d s , i t i s u s u a l l y c a u s e d b y t h e following except of:a.rol l ing the mixture below the temperature requirements  b . t o o m u c h c o a r s e a g g r e g a t e sc . t o o l i t t l e b i n d e r  d.too much fine aggregates

218.Test results from specimen taken from a recently rol led asphalt pavement showed that i ts total asphalt content is 5.45 % by weight of mix. If the asphalt absorbed by the aggregate is 0.95 %,the effective asphalt content by weight of mix is:a . 4 . 8 % P b a  b.4.552 NOTE: Pbe = ----- x Ps c . 5 . 1 0 % 1 0 0d . 5 . 5 0 %   Where: Pbe = effective asphalt content, percent by total weight of mixturePba = absorbed

asphalt, percent by weight of aggregatePb = asphalt content, percent by total weight of

mixturePs = aggregate content, percent by total weight of mixture

219.An asphalt mix prepared in the laboratory used 30 %, 50 %, 20 % by weight of coarse aggregate (CA), fine aggregate (FA) and mineral filler (MF), respectively. If the specific gravity of CA,

  FA, and MF are 2.50, 2.65 and 2.50, respectively, the overal l specific gravity of composite aggregates is:a.2.58

30 + 50 + 20 b.2.45 SG oa = --------------------------------- =2.58c . 2 . 6 6 3 0 / 2 . 5 + 5 0 / 2 . 6 5 + 2 0 / 2 . 5d . 2 . 7 7

220.If 95 % of the aggregates in quest ion no. 45 is mixed with 5 % asphalt by weight of mix, the specific gravity of the mix (if it is voidless) is:specific gravity of asphalt is 1.01.a . 2 . 4 5  b . 2 . 2 3 1 0 0c.2.39 Gmm = Gmb = -------------------------d . 2 . 1 8 ( voidless) 9 5/2.58 + 5/1.01

2 2 1 . I f t h e b i t u m i n o u s m i x i n N o . 4 6 h a s a 5 % a i r v o i d s , t h e b u l k s p e c i f i c g r a v i t y ( G m b ) c a n b e computed as:a.2.51 Gmm – Gmb b.2.27 % Air Voids = ----------------- x 100

c . 2 . 3 9 G m md. 2.41 2.39 – Gmb 5/100 = ------------------ 2.39

222.If the dry stabil i ty of a bi tuminous mix is 3,950 lbs. And i ts wet stabil i ty is 2,830 lbs. , the Index of Retained Strength (IRS) is:a . 5 0 . 2 0 %  b.71.60 % Wet Stabilityc.73.20 % IRS = ----------------- x 100d . 6 1 . 1 0 % D r y S t a b i l i t y

2 2 3 . T h e v o i d s i n t h e m i n e r a l a g g r e g a t e ( V M A ) i s :a. the sum of the air voids and the volume of the mixb.the difference between the volume of the mix and the volume of aggregatec.the sum of the air voids and volume of aggregated.the difference between the volume of mix and volume of asphalt

224.The distance travelled by a standard penetrat ion needle on a prepared sample of asphalt cement u n d e r c o n d i t i o n f o r n o r m a l p e n e t r a t i o n i s 9 . 0 m m ( t h e p e n e t r a t i o n s c a l e h a s 1 / 1 0 m m calibration). Asphalt cement is classified as --------- penetration grade.a . 6 0 – 7 0b . 8 5 – 1 0 0c . 1 2 0 – 1 5 0d . 2 0 0 - 3 0 0