PDF(534 KB)
Study on Effect of Polypropylene Fiber on Properties of Desert Sand Self-Compacting Concrete
MENG Hai-rui, WU Dai-qi, WANG Jin, HE Shu-chao
PDF(534 KB)
PDF(534 KB)
Study on Effect of Polypropylene Fiber on Properties of Desert Sand Self-Compacting Concrete
The influence of water-glue ratio, fly ash content, desert sand substitution rate and polypropylene fiber content on the 28 d flexural strength of desert sand self-compacting concrete was studied through orthogonal test. The results show that the effects of preparation conditions on the flexural strength of concrete at 28 d are in the order of desert sand substitution rate>water-glue ratio>polypropylene fiber content>fly ash content, and the optimal parameter combination is A1B3C3D3. Compared with ASC-0, the cracking inhibition rate of the ASC-3 group is as high as 54%, and the dry shrinkage rate is reduced by 18.3%. Therefore, polypropylene fiber can improve the mechanical properties, crack resistance and shrinkage resistance of desert sand concrete.
Self-compacting concrete / Desert sand / Polypropylene fiber / Flexural strength / Crack resistance
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