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Which of the following is not a pozzolanic material?(a) Fly ash(b) Silica fume(c) Cinder(d) SlagThe question was asked by my school principal while I was bunking the class.This intriguing question comes from Types of Cement and Uses in portion Materials for Construction of Basic Civil Engineering

Answer»

The correct option is (c) Cinder

Easiest explanation: Pozzolans are silicate BASED materials that FORM cementitious materials.Fly ASH, silica fumes and slag are composed of OXIDE of silicon.Cinder is a coal residue.



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