| ACID PROOF BRICKS (IS 4860) |
| Characteristic |
Class I |
Class II |
| Water Absorption (%) max. |
2 |
4 |
| Flexural Strength (kg/cm2) min. |
100 |
70 |
| Compressive Strength (kg/cm2 min. |
700 |
500 |
| Resistance to Acid/ Loss in weight (%) max. |
1.5 |
4.0 |
|
| ACID RESISTANT MORTAR (IS 4832 - Part I) |
| Property |
Sodium Silicate Type |
Potassium Siliate Type |
| Working time (minutes) min. at 27±2ºC |
15 |
20 |
| Flexural Strength (kg/cm2) min. at 7 days |
35 |
40 |
| Compressive Strength (kg/cm2 min. at 7 days |
100 |
150 |
| Bond Strength (kg/cm2) min. |
5 |
| Absorption of Toluene (% by weight) max. |
18 |
|
|
