机制砂超高性能混凝土（UHPC）性能影响因素试验研究

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发布时间：2020-01-06 00:00:00

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机制砂超高性能混凝土（UHPC）性能影响因素试验研究

Experimental Study on Influencing Factors of Machine-made Sand Ultra-high Performance Concrete (UHPC) Performance

2022年第1期

钢纤维；机制砂；超高性能混凝土（UHPC）；流动性；抗压强度；正交试验；工程应用

Steel fiber; Machine-made sand; Ultra-high performance concrete(UHPC); Fluidity; Compressive strength; Orthogonal test; Engineering application

2022年第1期

10.19761/j.1000-4637.2022.01.048.06

国家自然科学基金项目（51608311）。

马正先，赵雅萌，陈炳江，肖文帅，孙立刚

山东建筑大学土木工程学院，山东济南 250100

马正先，赵雅萌，陈炳江，肖文帅，孙立刚

马正先,赵雅萌,陈炳江,等.机制砂超高性能混凝土（UHPC）性能影响因素试验研究[J].混凝土与水泥制品,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.

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1000

摘要：超高性能混凝土（UHPC）在拥有超高力学性能的同时普遍存在流动性较差的问题。为了寻求二者之间的平衡，首先通过单因素试验分析了石英砂掺量、粉煤灰掺量、减水剂掺量和钢纤维掺量对UHPC流动性及抗压强度的影响，其次利用正交试验得出了各因素对UHPC流动性及抗压强度影响的主次顺序，确定了最优配合比。结果表明：当石英砂掺量为32%（机制砂掺量为68%）、粉煤灰掺量为15%、减水剂掺量为0.39%、钢纤维掺量为2%时，配制出的UHPC工作性和力学性能良好，并成功应用于某高架桥维修加固工程中。 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.

英文名 : Experimental Study on Influencing Factors of Machine-made Sand Ultra-high Performance Concrete (UHPC) Performance

刊期 : 2022年第1期

关键词 : 钢纤维；机制砂；超高性能混凝土（UHPC）；流动性；抗压强度；正交试验；工程应用

Key words : Steel fiber; Machine-made sand; Ultra-high performance concrete(UHPC); Fluidity; Compressive strength; Orthogonal test; Engineering application

刊期 : 2022年第1期

DOI : 10.19761/j.1000-4637.2022.01.048.06

文章编号 :

基金项目 : 国家自然科学基金项目（51608311）。

作者 : 马正先，赵雅萌，陈炳江，肖文帅，孙立刚

单位 : 山东建筑大学土木工程学院，山东济南 250100

马正先，赵雅萌，陈炳江，肖文帅，孙立刚

马正先,赵雅萌,陈炳江,等.机制砂超高性能混凝土（UHPC）性能影响因素试验研究[J].混凝土与水泥制品,2022(1):48-52,63.

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摘要

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结论

参考文献

引用本文

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.

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机制砂超高性能混凝土（UHPC）性能影响因素试验研究

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