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Table 2: Effect of Loss on Ignition and Fineness of Flyash on Concrete Strength |
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The built environ |
|
Trendy article |
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S.NO |
Properties |
Source of Flyash |
Requirement IS: 3812 Gr._I |
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|
Veraval Lignite |
Dadri |
Rama Gundam |
Unchahar |
Badarpur |
Ropar |
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|
1. |
Physical Properties |
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|
a |
Fineness m2/kg |
430 |
328 |
281 |
488 |
418 |
322 |
320 (min) |
|
b. |
Specific Gravity |
|
2.06 |
2.12 |
2.23 |
2.14 |
2.07 |
-- |
|
c. |
Lime Reactivity (N/mm2) |
7.84 |
4.8 |
5.3 |
9.4 |
5.2 |
5.3 |
4.5 (min) |
|
d. |
Strength activity Index % |
91.8 |
129 |
94.3 |
86.6 |
118 |
82.5 |
80 (min) |
|
e. |
Soundness Autoclave % |
0.05 |
0.04 |
-- |
0.03 |
0.018 |
0.03 |
0.8 |
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For Concrete Strength of 360 Kg/cm2 at 28 Days At constant Workability At constant cement content of 310 Kg/rn3 |
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|
Fly ash |
Loss on Ignition |
Retained on 45um |
Ash content kg/m3 |
28 Days Strength kg/cm2 |
A
|
2.3 |
11.7 |
113 |
410 |
B
|
4.1 |
22.7 |
150 |
360 |
|
C |
7.4 |
45.7 |
113 |
190 |
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D |
2.0 |
25.7 |
150 |
350 |
|
E |
3.4 |
7.7 |
225 |
360 |
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PAGE 6 |
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Table 1:Properties of Some of the Indian Flyash |