Assignment 5 Concrete Engineering
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Assignment 5 Concrete Engineering Submission date : 18/11/2009 1) Name the Chemical and Natural admixtures? 2) What are plasticizers ? Explain dispersion and retarding effect of plasticizers? 3) Very briefly explain the factors affecting workability for plastiziers? 4) What is Slump loss? What are retarders, accelerators? Name them and very briefly explain their effect? 5) List the air entraining admixtures and their effect of freezing, thawing, strength, permeability, sand and water content ? 6) what are workability agents, water proofing agents ,corrosion agents, polymer bonding agents ? 7) what is guniting and shotcrete? 8) write about silica fume, metakoalin, surkhi?
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