Israeli Standard for Aggregates – IS 3

Arnon Bentur

Presentation at the

TAIEX expert mission on the Resource Efficiency of Construction and Concrete Materials

Technion, Haifa, IsraelJuly 17th, 2018

1001

millimetersmicrons

clays cement grains fine aggregate coarse aggregates

Size Range

Dust/Fines/Filler/Micro-fines

Range and Definitions• Lightweight aggregate – up to 2000 kg/m3• Heavy weight aggregate – more than 3000 kg/m3• Coarse aggregate – bigger than 4.75 mm• Fine aggregate – smaller than 4.75 mm• Fine natural aggregate (natural sand)• Fine crushed aggregate (crushed sand)• Dust – most passing 75 microns • EN – Fines, particle size fraction of an aggregate which passes the 63 micronsns sieve• Clay lumps• Aggregate labelling – maximum and minimum sizes (e.g. 19/5)• Maximum aggregate size• Filler – material serving as mineral additive, obtained in crushing of limestone or dolomite rocks• all smaller than 600 microns at least 65% smaller than 75 microns• Flaky aggregate• Elongated aggregate• Single size aggregate• Multi size aggregate

Grading – Coarse Aggregate: Table 2

No definition of all-in aggregateEN Definition:aggregate consisting of a mixture of coarse and fine aggregates

Grading – Fine Aggregate: Table 3, 2016 Revision

Natural Crushed

Grading – Fine Aggregate: Table 3, 2016 Revision

Filler definition somewhat different than EN:IS - all smaller than 600 microns, 65% smaller than 75 micronsEN - all smaller than 2mm, at least 85% smaller than 125 microns, at least 70% smaller than 63 microns

Natural Crushed

Coarse aggregate for concrete: Table 4

Concrete gradeType A – 40MPa grade concrete (B40-C25/30)or moreType B – 30MPa concrete maximum (B30-C20/25)

LA Crushing ValueType A – 23 maximumType B – 28 maximum

AbsorptionType A – 2.5% maximumType B – 4.0% maximum

Dust (fines)Type A – 1.5% maximumType B – 2.0% maximum

5.5 Particle density and water absorption

When required the particle density and water absorption shall be

determined in accordance with EN 1097-6 and

the results declared on request stating the means of determination

and the calculations used.

AB

Concrete Grading IS188, 466 and EN 206

B30 - C20/25B40 – C25/30

Coarse aggregate for concrete: EN

0

10

20

30

40

50

60

70

LA15 LA20 LA25 LA30 LA35 LA40 LA45 LA50 LA60

EN Classification – LA crushing value

IS – Type A

Cru

shin

hva

lue,

LA

tes

t

EN

IS – Type B

0

0.2

0.4

0.6

0.8

1

1.2

20 30 40 50 60 70

Max. EN

Max. IS

Rel

ativ

e st

ren

gth

of

con

cret

e

LA crushing value

3 %

Implications of Limits on Crushing Strength of Coarse Aggregates

Crushing value classificationsCrushing values and concrete strength

Source: A.Bekoe and M.Tia, University of Florida, Gainesville

Fine aggregate for concrete: Table 5

6 2 ת"ג

Concrete gradeType A – 40MPa grade concrete (B40-C25/30)or moreType B – 30MPa concrete maximum (B30-C20/25)

Dust (fines) contentType A – 15% maximumType B – 20% maximum

0

5

10

15

20

25

f3 f4 f5 f6 f7 f10 f16 f22

EN classification

0

5

10

15

20

25

F5 F10 F15 F20

IS classification

Type B

Type A

Limits on Dust (IS) and Fines (EN) in Fine Aggregate

Clay limits -ENMethylene blue less than 3 when the fines content is above 3%

Clay limits -IS15% mximum content in dust of particles smaller than 5 microns

Strategies for Using Dust/Fines as Fillers in ConcreteEN 12620 – Filler - material serving as mineral additive, obtained in crushing of limestone or dolomite rocks

all smaller than 600 microns at least 65% smaller than 75 microns

EN 2063.1.2.1 addition: finely-divided-inorganic constituent used in concrete in order to improve certain properties or to achieve special properties 3.1.2.2 type I addition: nearly inert addition 3.1.2.3 type II addition: pozzolanic or latent hydraulic addition

IS 118Allows use of filler, no provisions for properties, except sizeIS 466 Allows use of materials not covered by Israeli standard, if they comply with a foreign standardEN 12620Does not specify limiting values on properties, except definition of size• the sand equivalent value (SE) when tested in accordance with EN 933-8 exceeds a specified lower limit;• the methylene blue test (MB) when tested in accordance with EN 933-9 gives a value less than a particularspecified limit;• equivalence of performance with known satisfactory aggregate is established or there is evidence ofsatisfactory use with no experience of problems.

Thanks for your attention