search
arrow-left Previous
Next arrow-right
Q: The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength is known as
  • A. low-heated Portland cement
  • B. rapid hardening Portland cement
  • C. Portland blast slag cement
  • D. Portland pozzolana cement
Correct Answer: Option A - Low heat Portland cement is obtained by reducing the more rapidly hydrating compound, C3S & C3A and increasing C2S. Low heat cement is used in massive construction works like abutments, retaining wall etc. where the rate at which the heat can be lost at the surface is slower than at which the heat is initially generated. Low heat cement has low rate of gain of strength but the ultimate strength is practically the same as that of OPC.
A. Low heat Portland cement is obtained by reducing the more rapidly hydrating compound, C3S & C3A and increasing C2S. Low heat cement is used in massive construction works like abutments, retaining wall etc. where the rate at which the heat can be lost at the surface is slower than at which the heat is initially generated. Low heat cement has low rate of gain of strength but the ultimate strength is practically the same as that of OPC.

Explanations:

Low heat Portland cement is obtained by reducing the more rapidly hydrating compound, C3S & C3A and increasing C2S. Low heat cement is used in massive construction works like abutments, retaining wall etc. where the rate at which the heat can be lost at the surface is slower than at which the heat is initially generated. Low heat cement has low rate of gain of strength but the ultimate strength is practically the same as that of OPC.