The Influence of Fine Aggregates on the Working Performance and Mechanical Properties of Self-compacting Concrete
The stability of sand directly affects the filling performance and mechanical properties of self-compacting concrete.In this paper,the effects of fineness modulus and sand ratio on the workability and mechanical properties of self-compacting concrete were studied.The results show that the values of fineness modulus,mud content and sand percentage of river sand have significant effects on the fluidity and filling of self-compacting concrete.When the fineness modulus is between 2.4 and 2.9,the mud content of sand is less than 1.5%,and the sand percentage is between 47%and 52%,the working performance and mechanical properties of self-compacting concrete are the best,meeting the design and on-site construction requirements.
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