Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 6 (Q.No. 1)
Pick up the correct statement from the following:
The percentage of absorption for firebricks varies from 5 to 10
The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
The compressive strength of silica bricks is about 150 kg/cm2
All the above.
Answer: Option
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