1.

What is the content of Al2O3 in fly ash?(a) 30-60%(b) 15-30%(c) Up to 30%(d) 1-7%I have been asked this question in a job interview.My question comes from Factors Causing Variation in the Quality of Concrete topic in portion Quality Control of Concrete Technology

Answer»

Correct CHOICE is (b) 15-30%

Explanation: The CONTENT of Al2O3 in fly ash has been tested ACCORDING to PROCEDURES specified in IS: 1727-1967.



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