引用本文摘 ? 要：超高性能混凝土（UHPC）在擁有超高力學性能的同時普遍存在流動性較差的問題。為了尋求二者之間的平衡，首先通過單因素試驗分析了石英砂摻量、粉煤灰摻量、減水劑摻量和鋼纖維摻量對UHPC流動性及抗壓強度的影響，其次利用正交試驗得出了各因素對UHPC流動性及抗壓強度影響的主次順序，確定了最優配合比。結果表明：當石英砂摻量為32%（機制砂摻量為68%）、粉煤灰摻量為15%、減水劑摻量為0.39%、鋼纖維摻量為2%時，配制出的UHPC工作性和力學性能良好，并成功應用于某高架橋維修加固工程中。 Abstract: Ultra-high performance concrete (UHPC) generally has the problem of poor fluidity while having ultra-high mechanical properties. In order to find the balance between ultra-high mechanical properties and fluidity, firstly, the effects of quartz sand content, fly ash content, water-reducing agent content and steel fiber content on the fluidity and compressive strength of UHPC were analyzed through single factor tests. Secondly, the primary and secondary order of the influence of various factors on the fluidity and compressive strength of UHPC was obtained by orthogonal test, and the optimal mix proportion was determined. The results show that when the content of quartz sand is 32%(the content of machine-made sand is 68%), the content of fly ash is 15%, the content of water-reducing agent is 0.39%, and the content of steel fiber is 2%, the prepared UHPC has good workability and mechanical properties, and has been successfully applied to a viaduct maintenance and reinforcement project.
馬正先,趙雅萌,陳炳江,等.機制砂超高性能混凝土（UHPC）性能影響因素試驗研究[J].混凝土與水泥制品,2022(1):48-52,63. MA Z X,ZHAO Y M,CHEN B J,et al.Experimental Study on Influencing Factors of Machine-made Sand Ultra-high Performance Concrete (UHPC) Performance[J].China Concrete and Cement Products,2022(1):48-52,63.