Research on Mix Proportion Design of Ready-mixed Concrete Based on Machine-made Sand
Concrete mix proportion design is a key link to ensure the quality of concrete structure engineering.Based on the characteristics of modern concrete multi-component binding components,this article proposes a new design idea for ready-mixed concrete by integrating the advantages of various mix proportion design methods.It selects the volume of stones,sand ratio,amount of binding materials,and influence coefficient of admixtures,optimizes the activity influence coefficient of multi-component admixtures containing stone powder,calculates the mix proportion of C30 and C50 concrete,and conducts verification tests.The results show that the C30 and C50 concrete prepared by calculating the amount of cementitious materials and selecting the sand ratio using the proposed mix proportion design method has good performance in workability;using the activity influence coefficient of admixtures proposed in this article,both C30 and C50 concrete prepared can achieve the required strength and meet the mechanical performance requirements of concrete.
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维普
