The Mix Design of Low Strength High Flowing Concrete with Low Cement Content Prepared by Manufactured Sand

摘要

Aiming at the engineering status of the shortage of natural sand and the contradictory between workability and strength surplus emerging in the design of low strength high flowing concrete(LHC), this paper has proposed a mix design method of LHC with low cement content prepared by manufactured sand (MS). And then verifies the feasibility of the method through experiments. Tests on slump, compressive strength and chloride ion diffusion coefficient were carried out and the results indicate that LHC with low cement content prepared by MS can be successfully produced using this method. Concrete designed by this method has low cement consumption and has utilized MS to replace NS as well as made full use of the industrial by-products of stone fines and fly ash. As a result, it is economical and ecological.