Question
Download Solution PDFWhich of the following is NOT a field of application of rapid-hardening cement?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation
Rapid Hardening Cement
- The initial and final setting times of this cement are the same as those of ordinary cement, But it attains high strength in the early days.
- It contains a high percentage of tricalcium silicate to the extent of about 56%.
This is due to the following facts.
- Burning at high temperature.
- Increased lime content in the cement composition.
- Very fine grinding.
It offers the following advantages:
- As it sets rapidly, the construction work may be carried out speedily.
- The formwork of concrete can be removed earlier and it can therefore be used frequently.
- It obtains strength in a short period. The compressive strength at the end of one day is about 11.50 N/mm2 and that at the end of 3 days is about 21 N/mm2. Similarly, the tensile strength at the end of one day is about 2 N/mm2 and that at the end of 3 days is about 3 N/mm2.
- It is light in weight.
- It is not damaged easily.
- The structural members constructed with this cement may be loaded earlier.
- This cement requires short period of curing.
- The use of this cement allows higher permissible stresses in the design. It, therefore, results in economic design.
Last updated on May 28, 2025
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