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Content of SiO2 in silica fume?(a) 52%(b) 35%(c) 21.9%(d) 85-97%This question was posed to me in examination.The query is from Factors Causing Variation in the Quality of Concrete topic in division Quality Control of Concrete Technology

Answer»

The correct answer is (d) 85-97%

Explanation: The CONTENT of SIO2 in silica fume is 85-97%. 35% is the content of SiO2 in CALCAREOUS (ASTM C618 Class C) Fly ASH.



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