掺磷尾矿砂的UHPC板抗弯性能试验研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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掺磷尾矿砂的UHPC板抗弯性能试验研究

Experimental study on flexural behavior of UHPC slabs with phosphorus tailing sand

2024年第4期

超高性能混凝土（UHPC）；磷尾矿砂；预制板；抗弯性能；有限元分析

Ultra-high performance concrete(UHPC); Phosphorus tailing sand; Precast panel; Flexural performance; Finite element analysis

2024年第4期

10.19761/j.1000-4637.2024.04.042.06

江苏省自然科学基金资助项目（BK20210925）；江苏省重点研发计划（社会发展）资助项目（BE2021681）。

王卓群1，宗钟凌1，2，3，*，谢青海1，2，骆辉1，卢浩宇1，赖斌1，高子晴1

1.江苏海洋大学土木与港海工程学院，江苏连云港 222005；2.江苏省海洋工程基础设施智能建造工程研究中心，江苏连云港 222002；3.江苏省海洋资源开发研究院，江苏连云港 222002

王卓群1，宗钟凌1，2，3，*，谢青海1，2，骆辉1，卢浩宇1，赖斌1，高子晴1

王卓群,宗钟凌,谢青海,等.掺磷尾矿砂的UHPC板抗弯性能试验研究[J].混凝土与水泥制品,2024(4):42-47.

WANG Z Q,ZONG Z L,XIE Q H,et al.Experimental study on flexural behavior of UHPC slabs with phosphorus tailing sand[J].China Concrete and Cement Products,2024(4):42-47.

浏览量:

1000

摘要：使用磷尾矿砂取代部分河砂制备了超高性能混凝土（UHPC），研究了不同磷尾矿砂取代率（0~20%）对UHPC试件强度与弹性模量的影响，优选出最佳配合比，制作了5块配筋UHPC板，研究了不同厚度及配筋率对UHPC板抗弯性能的影响。结果表明：随着磷尾矿砂取代率的增加，试件的抗压强度与弹性模量呈先增加后下降的趋势；当磷尾矿砂取代率为10%，试件的抗压强度和弹性模量达到峰值，而抗拉强度随着磷尾矿砂取代率的增加而显著降低；在局部荷载作用下，配筋UHPC板的极限承载力和弯曲韧性随着配筋率和截面高度的增大而提高。此外，基于试验得到的UHPC受压本构曲线，建立了配筋UHPC板数值仿真模型，发现分析结果与抗弯试验结果吻合较好。 Abstract: The Ultra-high performance concrete(UHPC) was prepared by replacing some river sand with phosphorus tailing sand. The influence of different replacement rates (0~20%) of phosphorus tailing sand on the strength and elastic modulus of UHPC was studied, and the optimal mix proportion was selected. Five reinforced UHPC slabs were made, and the effects of different thicknesses and reinforcement ratios on the flexural performance of UHPC slabs were studied. The results show that as the replacement rate of phosphorus tailing sand increases, the compressive strength and elastic modulus of the specimens show a trend of first increasing and then decreasing. When the replacement rate of phosphorus tailing sand is 10%, the compressive strength and elastic modulus of the specimen are the highest, while the tensile strength significantly decreases with the increase of the replacement rate of phosphorus tailing sand. Under local loads, the ultimate bearing capacity and flexural toughness of reinforced UHPC slabs increase with the increase of reinforcement ratio and section height. In addition, the numerical simulation model for reinforced UHPC slabs is established based on the compression constitutive curves of UHPC from the tests, and the analysis results are in good agreement with the flexural test results.

英文名 : Experimental study on flexural behavior of UHPC slabs with phosphorus tailing sand

刊期 : 2024年第4期

关键词 : 超高性能混凝土（UHPC）；磷尾矿砂；预制板；抗弯性能；有限元分析

Key words : Ultra-high performance concrete(UHPC); Phosphorus tailing sand; Precast panel; Flexural performance; Finite element analysis

刊期 : 2024年第4期

DOI : 10.19761/j.1000-4637.2024.04.042.06

文章编号 :

基金项目 : 江苏省自然科学基金资助项目（BK20210925）；江苏省重点研发计划（社会发展）资助项目（BE2021681）。

作者 : 王卓群1，宗钟凌1，2，3，*，谢青海1，2，骆辉1，卢浩宇1，赖斌1，高子晴1

单位 : 1.江苏海洋大学土木与港海工程学院，江苏连云港 222005；2.江苏省海洋工程基础设施智能建造工程研究中心，江苏连云港 222002；3.江苏省海洋资源开发研究院，江苏连云港 222002

王卓群1，宗钟凌1，2，3，*，谢青海1，2，骆辉1，卢浩宇1，赖斌1，高子晴1

王卓群,宗钟凌,谢青海,等.掺磷尾矿砂的UHPC板抗弯性能试验研究[J].混凝土与水泥制品,2024(4):42-47.

WANG Z Q,ZONG Z L,XIE Q H,et al.Experimental study on flexural behavior of UHPC slabs with phosphorus tailing sand[J].China Concrete and Cement Products,2024(4):42-47.

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摘要

参数

结论

参考文献

引用本文

Abstract: The Ultra-high performance concrete(UHPC) was prepared by replacing some river sand with phosphorus tailing sand. The influence of different replacement rates (0~20%) of phosphorus tailing sand on the strength and elastic modulus of UHPC was studied, and the optimal mix proportion was selected. Five reinforced UHPC slabs were made, and the effects of different thicknesses and reinforcement ratios on the flexural performance of UHPC slabs were studied. The results show that as the replacement rate of phosphorus tailing sand increases, the compressive strength and elastic modulus of the specimens show a trend of first increasing and then decreasing. When the replacement rate of phosphorus tailing sand is 10%, the compressive strength and elastic modulus of the specimen are the highest, while the tensile strength significantly decreases with the increase of the replacement rate of phosphorus tailing sand. Under local loads, the ultimate bearing capacity and flexural toughness of reinforced UHPC slabs increase with the increase of reinforcement ratio and section height. In addition, the numerical simulation model for reinforced UHPC slabs is established based on the compression constitutive curves of UHPC from the tests, and the analysis results are in good agreement with the flexural test results.

关键词:

the

uhpc

and

tailing

phosphorus

取代

矿砂

strength

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