alleryStart learning →C3S and C2S together typically constitute the cement strength because their share of total cement is:
AAbout 20 to 30 percent
BAbout 70 to 80 percent
CAbout 40 to 50 percent
DAbout 90 to 95 percent
Answer & Solution
Correct answer: B. About 70 to 80 percent
1. §1.4 (after Table 1.3) reads: 'C3S and C2S are the most important compounds responsible for strength. Together, they constitute 70 to 80 percent of cement.'
2. The other ranges are not supported by the source.
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, §1.4 (after Table 1.3), p. 7_
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