Design and Engineering Application of Fair-faced Self-compacting Concrete with Manufactured Sand
In order to meet the needs of engineering construction,this study based on volume design,through aggregate grade optimization and cement paste rheology modification,have designed the fair-faced self-compacting concrete(FFSCC)with manufactured sand.The influence of key factors on workability of FFSCC was studied:the increase of coarse aggregate will have a negative impact on workability of FFSCC;when the content of fine aggregate is small,the increase of sand rate is conducive to workability,and when the content is large,it is unfavorable.The strength of FFSCC is weak in the early stage,but increases greatly in the later stage.The impermeability and volume stability are not as good as that of conventional fair-faced concrete,and the frost resistance and material and application cost have advantages.
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