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¿ƔŷŕƈŬŏ : ŶƔƊŰś ƇŕƄũ ŽƔſŦ ƉŪƏƅŔ ŞŕśƊƙ řƊŕŬũŦ řſƔſŦ řƅŪŕŷ 10 ŴƒƈŮř ƇŨƍƃŒ ŻƒŽŤ ƅœƂŧ ŜœřƈƗ ŗƃŨœŵ ŗŽƒŽŤ ŗƈœŪŧŤ * * ţƒŧŋřŕ ųŒŧřŤŒ ŖŇŒŧŕ ƏƄŵ Ũőœš ŚšŕƃŒ 14 / 8 / 2001 . ť . ¾ƒŵœƆŪŒ ƅƃœŪ ŗƒťœƈ ** ťŌŒť ťƆšƆ ťŵť ** ťŵœŪƆ ŦœřŪŒ / ŘŒŇœŬƈƗŒƍ ŇœƈŕƃŒ Řœƒƈƀř ŗŪťƈƋ ƅŪſ / ¾ŮƍƆƃŒ ŗƒƈƀřƃŒ ŗƒƄƂƃŒ ŗŮƚŤƃŒ ƎťŊ Ƒż ŗƆťŤřŪƆƃŒ ŘœƈœƀřƄƃ ŚƒťšƃŒ ŧƍűřƃŒ Ŝœřƈō ŗƈœŪŧŤƃŒ Əƃō ŧƍƌŲ ųŒƍƈŊ ŗƈŧœƀƆ ŗŽƄřŤƆ ŘœżœśƂ ŘŒŦ ŗƈœŪŧŤƃŒ ƇƆ ŗƒťœƒřŵƙŒ ŗƈœŪŧŤƃœŕ . žŧű ŖťŶŕ œƌƒƄŵ ¾ƍŮšƃŒ ƇƂƆƒ ŗżœśƂƃŒ ƉŦƋƍ Ǝťšō ƇŨƍºƃŒ ŻºƒŽŤƃŒ ƅœºƂŧƃŒ ¾œƆŶřŪŒ žŧűƃŒ ƉŦƋ Lightweight aggregates . ƑƃœšƃŒ ŚšŕƃŒ Żťƌƒ Əƃō ŴƒƈŮř ųŒƍƈŊ ŻƒŽŤƃŒ ƅœƂŧƃŒ ƇƆ ) ƅŵœƈƃŒƍ ƇŬŤƃŒ ( ƅś ƇƆƍ Ŝœřƈō ¾řƂ ŗŕŪœƈƆ ŗƒťœŮřſŒ ŗŽƄƂŕƍ œƒƄšƆ ŖŧżƍřƆ ťŒƍƆ ƇƆ ťƒŞ ƐŧŒŧš ¾Ũŵ ŘŒŦ ŗŽƒŽŤ ŗƒƈœŪŧŤ . ƇºƆ Ƈƒŵƍºƈ ƏƄŵ ¾ƍŮšƃŒ ƅř ťſƍ ŴƒƈŮřƃŒ ƇƆ Ƈƒřƀƒŧű ƅŒťŤřŪœŕ ŻƒŽŤƃŒ ƅœƂŧƃŒ žƄűŊ ųƍƈƃŒ ƏƄŵ ¾ƍƕŒ ŇœŕťšƃŒ ƅœƂŧ ƊŶƒƈŮř ƅř ƏºƄŵ ťƍºŞƍƆ ¾Žű Ƈƒű ƇƆ ŗŕŪƈŕ ¾ŮƍƆƃŒ ŗƀűƈƆ Ƒż ŗƄŞť Řœżœš 50 % ƇƒŧŹƍ Silt ŗŕŪƈŕ 50 % ƅœƂŧ ƏƄŵ ¾ƍŮšƃŒ ƅřƍ ŗżœśƂŕ 860 ƅźƂ / ƅ 3 . žºƄűŊƍ ƇƒŶƒŕŧƃŒ ƅœƂŧ ƑƈœśƃŒ ƏƄŵ ƊºƈťŶƆ ƐŦƃŒƍ Ĺ ŒťŞ ŖŧƒŕƂ ŘœƒƆƂŕ Ǝƍƈƒƈ ŗŲżœšƆ Ƒż ťƍŞƍƆƃŒ ƑšőœŽŮƃŒ ƑŶƒŕűƃŒ ƇƒűƃŒ ťœƆřŵŒ ƅřƍ ƒœƈƍƃŧƍƆřƈƍƆƃŒ ƍƋ ƅœƂŧ ƏƄŵ ¾ƍŮšƃŒ ƅřƍ ƇƒƃŌœƂƃŒƍ Ř ŗżœśƂŕ 750 ƅźƂ / ƅ 3 ŗºƀƒŧűƍ žŒŧºŶƃŒ Ƒż Ĺ œƀŕœŪ ųƍƈƃŒ ŒŦƋ ŴƈŮƒ ƅƃƍ ŗƒťœŮřſŒƍ ŗűƒŪŕ ƊŶƒƈŮř . ƃ ťƀ ŘƒŧŞŊ Ƒż œƆƋťœƆřŵŒ ƅřƍ œƆƌƃ ŗƒŪœƒƀƃŒ ŘœŮƍšŽƃŒ Ŝœřƈō ¾řƂ ƏƄŵ œƈƄŮš ťƀż ŗƒƈœŪŧŤƃŒ ¾řƂƃŒ Œ ƅœƂŧ ƇƆ ŗƄƆœšƃŒ ƇŒŧťŞƃŒ Ƒż ¾ƆŶřŪř ŗŽƒŽŤ ŗƒƈœŪŧŤ ŧƆŶŕ űźŰƄƃ œƌƄƆšř Ŗƍſ ŘƈœƂƍ Ňœŕťšƃ 28 ƅƍƒ 15.33 Ƈřƍƒƈ / ƅºƄƆ 2 œƌřżœśƂƍ 1770 ƅźƂ / ƅ 3 œƆŊ Ƒż ƅťŤřŪŒ ťƀż ƇƒŶƒŕŧƃŒ ƅœƂŧ Ŝœřƈō ŗƒƈœŪŧŤ ¾řƂ ůŒŧŹƕ ¾ƒŮƍřƃŒ ¾ƆœŶƆ ƇœƂ ťſƍ ƐŧŒŧšƃŒ ¾ŨŶƃŒ ƐŧŒŧšƃŒ K Ɗƃ 0.55 űŒƍ / ƅ . ŗżœśƂŕƍ ŖŧŶŪ ƍƒƄƂ 1640 ƅźƂ / ƅ 3 . ŗƃŒťƃŒ ŘœƆƄƂƃŒ : ƇƒűƃŒ ŗƒƈœŪŧŤƃŒ ¾řƂƃŒ ƇŨƍƃŒ ŻƒŽŤƃŒ ƅœƂŧƃŒ . Processing Lightweight Aggregate to produce Lightweight Concrete Dr.Nadia Salim Esmaeil Daad Mohamed Daood Ass. Prof. /Civil Department Ass. Prof. /Civil Department Abstract The modern techniques development used in the production of concrete led to the emergence of types of concrete with different densities compared to normal concrete . This research aimed manufacturing types of lightweight aggregate (coarse and fine) and then the production of lightweight concrete blocks with a good thermal insulation , by using available locally materials . Two types of lightweight aggregate , have been produced by using two methods of manufacturing , first type , where AL-Hadbaa aggregate , produced from Clay , which is on the edge of the Tigris river in Mosul , using 50% Clay and 50% silt , the density obtained about 860 Kg/m 3 . The second AL-Rabean aggregate , was the adoption of natural laminated Clay which is located in Nineveh province , in very large quantities , it's mineralization is Montmurlite and kaolinite , density obtained was 750 Kg/m 3 , this type did not produce in Iraq and which it's manufactured method simple and economic . The standard tests have been made and were adopted in the production of concrete blocks , lightweight concrete block produced from AL- Hadbaa aggregate , used in bearing walls , have 28 – day compressive strength 15.33 N/mm 2 and density about 1770 Kg/m 3 . The AL-Rabeaan aggregate used to product concrete block for the purposes of thermal insulation , it's thermal conductivity coefficient was 0.55 W/m.kcal and have a density 1640 Kg/m 3 . Keywords : Clay , lightweight aggregate , concrete block . ϢϠΘγ 18 - 5 - 2009 ϞΒϗ 28 - 1 - 2010
Transcript of Y j U w Y f Y U l i f ^ U [ j T } f U i v p [ ¿ w U l O · 2020. 10. 5. · Y j U w Y f Y U l i f...
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* *14 /8 /2001.
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/ /
.
Lightweight aggregates . ) (
.
50 %Silt50 %860/3.
750/3
.
2815.33/2
1770/3
K0.55/.1640/3 .
: .
Processing Lightweight Aggregate to produce LightweightConcrete
Dr.Nadia Salim EsmaeilDaad Mohamed DaoodAss. Prof. /Civil DepartmentAss. Prof. /Civil Department
AbstractThe modern techniques development used in the production of concrete led to the emergence
of types of concrete with different densities compared to normal concrete . This research aimedmanufacturing types of lightweight aggregate (coarse and fine) and then the production oflightweight concrete blocks with a good thermal insulation , by using available locally materials. Two types of lightweight aggregate , have been produced by using two methods ofmanufacturing , first type , where AL-Hadbaa aggregate , produced from Clay , which is on theedge of the Tigris river in Mosul , using 50% Clay and 50% silt , the density obtained about 860Kg/m3 . The second AL-Rabean aggregate , was the adoption of natural laminated Clay which islocated in Nineveh province , in very large quantities , it's mineralization is Montmurlite andkaolinite , density obtained was 750 Kg/m3 , this type did not produce in Iraq and which it'smanufactured method simple and economic . The standard tests have been made and wereadopted in the production of concrete blocks , lightweight concrete block produced from AL-Hadbaa aggregate , used in bearing walls , have 28 – day compressive strength 15.33 N/mm2 anddensity about 1770 Kg/m3 .
The AL-Rabeaan aggregate used to product concrete block for the purposes of thermalinsulation , it's thermal conductivity coefficient was 0.55 W/m.kcal and have a density 1640Kg/m3 .
Keywords : Clay , lightweight aggregate , concrete block .
18 -5-200928-1-2010
Al-Rafidain Engineering Vol.18 No.6 December 2010
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1 .
Lightweight concrete
[1,2,3].
(Dry unit weight)
1800/3 :
. . . .. .
[4]
)Lightweight aggregate concrete (
)diatomite
PumiceScoria ( .
)
Expanded clayPerliteVermiculiteExpanded blast furnace slag
Purlrerized fuel ash ([5] .
[6,7,8].
Lightweight aggregate concrete
dead load) (
.
:-
.Insulation Lightweight agg. Concrete:-
800
/36.89 – 0.69/2.
:
12
.Structural lightweight agg. Concrete:-
Compressive Strength17.24/2
34.47/241.36/2
) (
1760-
1600/3.
.Moderate lightweight agg. concrete:-
) () (
17.24 – 6.89/2) ().(
[1,5,9] .800 /3 )“k”0.24 – 0.13/ . (
(5.17 – 0.48)/2[10].
59/2
(1440 – 1650) /3[11] .
40%[12] .
[13,14] .
Fuller earth
[15] ASTM
.
)dead load (
.
)live load (
Precast concrete .
Al-Rafidain Engineering Vol.18 No.6 December 2010
13
light weight aggregate
.
.
:
StrengthDurability .
.
.
– .
.
bulk density)AS 1480 and ASTM C567 ( 160-2000
kg/m3 .drying shrinkage
.
.200 . %
1000
Dehydration
150–600CaCO3600–900
]9 .[
900–1000
.
Fe2O3350–900
600
.
2 .2.1
)
(Silt
:
14
:-
. ) ( ) (
.
. )
( ) (
) (
)1. (2.2
.50 %50 %Silt
.
. ) Fuller clay)
.
2.3
.
1000
8.
.700
700 – 600
4-3.
2.4
.(ASTM / C-330))2.(
.(ASTM / C-332))3.(
2.5:
100×100×100
)150×150×300 ( .
3 :1.5 :1w/c =0.5)
( .
Al-Rafidain Engineering Vol.18 No.6 December 2010
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3 :3 :1
w/c =0.5)(.
2.6Curing
) (
.(22 2 c )
)12–15 (.
3 .
3.1
1 . 2 ..13
:
.Grading
ASTM(C330 – 77a)
)2 ( .
) (
(C332-77a))3. (
.Specific gravity
ASTM.
1.912.0
(2.6 – 2.8))4. (
.Unit weight
.
]1[880 /3 )
(1040 /3[4]860/3 750
:
16
/3 ) (1010/3
.
.Absorption
29 %22 %
.
3.23.2.1Compressive Strength
7142128
.)6 ()1 . (
2815.33/2
Moderate Strength[1].
)6 ( 28
5.5/2Isolated Concrete[1].
3.2.2Unit Weight
28 .
)7 . (
1770 /3.1640/3
1800 /3
.)9 (
,
3.2.3Absorption
. .)7 (
16.2 %
.8.5 %
.
3.2.4 )K(
.
K
Al-Rafidain Engineering Vol.18 No.6 December 2010
17
/ .ACI]1 [
:
K :
/3 . :
e : .
k0.658/k0.55/
k1.5
/..
3.3
[17]
)8 (:
.2300–2400/3
1770 /31640 /3 .
.
.15.33/2
.5.5/2
.
.)8 (
) (
15%8.5 %
.
.
)8 ( )
K (0.658/ .0.55/ .
k=1.5/ ..
00125.0072.0 eK
:
18
4 .Conclusion
1.
.
2.
:
. )1640-1770 (/3
2400/3 .
.5.5–15.33/2
.
.)8.5–16.2 %( )0.55–0.658 (/.
)1.5 (/. ..
)1(
%
SiO260.15
Al2O316.45
Fe2O34.04
FeO2.90
MgO2.32
CaO1.41
Na2O1.01
K2O3.60
H2O3.82
CO21.46
Al-Rafidain Engineering Vol.18 No.6 December 2010
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)2((C330-77a)ASTM
/%)a77–330 (ASTM
259795-100
12.55025–60
)4 (4.75510-0
)3((C330-77a)
/ %)a77–330 (
ASTM
25100100
12.59795–100
)4 (4.756580–50
)50 (3001420–5
)100 (1501015-2
)4(
Unit weight
/3
Specific
gravityAhsorpition %
18601.9129%
27502.022%
3) +
(1010 ---19%
:
20
)5(
W/ccm
11:1.5:30.57–5
23:3:10.57-5
)6(
/2
7142128
16.613.17514.45315.33
22.1213.624.85.5
)7(
150 ×150 ×300
/3%)
k (/ .
1177016.20.658
216408.500.55
)8(
/3
/2%
)k (/ .
1177015.3316.20.658
216405.58.50.55
3]16[
240013.0101.5
4
]16[
24009.0151.5
Al-Rafidain Engineering Vol.18 No.6 December 2010
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:
22
/2
/2
)1(
Al-Rafidain Engineering Vol.18 No.6 December 2010
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5 . References
1. ACI Manual of Concrete practice 1985 part1. Materials and general properties ofConcrete (P. 213 R.79).
2. Economic design and construction with light weight aggregate Concrete . EuvolightConc, Project Program of Brite 02- 1998.
3. Natural aggregate in structural light weight Concrete Akers , David J , Floyd , Robert W.Proceedings of the Session’s Related to Structural Materials at Structures Congress 1989P. 44-55.
4. Building Construction HandBook F. Merritt Third Edition 1975.5. Properties of Concrete AM. Neville 1977 (P. 522-534).6. Can perllite be used in Structural Concrete . Mayfield , Brian et.al. Concrete ( London)
V22 no 10 Oct. 1988 P. 27-28.7. Study on resistance of high strength-weight Concrete to freezing and thawing. Tamura,
K. Fujita, H. Tagaya , K. ; et.al. Proceedings of the sixth (1987) International offshore.Mechanices and Arctic Engineering Symposiam 1987 Mar. 1-6 P. 185-191.
8. Properties of Concrete Manufactured with aggregates of different densities . Berra,Mario. Ferrara. Gerard. Bulletin of the International Association of Engineering Geologyno 30 Dec. 1984 P. 339-343.
9. Attapulgite aclay liner solution. William Tobin, Civil engineering / ASCE Feb. 1986.10. Guide for Cast in – place low Density Cincrete. ACI Journal by ACI Comitte 523 September –
October 1986 P. 830-837.11. Mechanical Properties of High-Strength light weight concrete by Floyd O. slate, Arthur H.
Nilson and Salvador Martinez July – August 1986 P. 606-613.12. Marley make supalite roof tiles at Burton – on – rent plant Anon , Concrete plant and
production V5 no 5 May 1987 P. 159-162.13.
1980 .
14. The Engineering Index Properties and Mineralogy of Mosul Soil. Dr Kanana M. Thabet , Dr.Mumtaz Amin , Suham Al Ezzo .
15.Annual Book of ASTM standards , part 14, Concrete and Mineral aggregate , AmericanSociety for Testing and Materials , 1979.
16. 10771985
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