钢渣微粉生态型超高性能混凝土力学性能影响因素分析

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (2): 607-617.

所属专题：资源综合利用

钢渣微粉生态型超高性能混凝土力学性能影响因素分析

唐咸远^1,2, 马杰灵^1,2, 罗杰¹, 何滨冰¹, 陆澄剑³

1.桂林电子科技大学建筑与交通工程学院,桂林 541004;
2.广西智慧交通重点实验室,桂林 541004;
3.桂林市永固混凝土有限责任公司,桂林 541100

收稿日期:2022-09-29 修订日期:2022-11-28 出版日期:2023-02-15 发布日期:2023-03-07
通信作者: 马杰灵,硕士研究生。E-mail:majielingzc1128@163.com
作者简介:唐咸远(1973—),男,博士,正高级工程师。主要从事高性能建筑材料与结构的研究。E-mail:Thy1188@126.com
基金资助:
国家自然科学基金(42067044);广西研究生教育创新计划(YCSW2021171)

Analysis of Influencing Factors on Mechanical Properties of Steel Slag Powder Ecological Ultra-High Performance Concrete

TANG Xianyuan^1,2, MA Jieling^1,2, LUO Jie¹, HE Binbing¹, LU Chengjian³

1. School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin 541004, China;
2. The key laboratory of Intelligent Transportation in Guangxi, Guilin 541004, China;
3. Guilin Yonggu Concrete Co., Ltd., Guilin 541100, China

Received:2022-09-29 Revised:2022-11-28 Online:2023-02-15 Published:2023-03-07

摘要/Abstract

摘要： 为促进钢铁企业废渣的无害化处理与资源化利用,将钢渣制成微粉替代石英粉制备生态型超高性能混凝土(UHPC)是其再利用的有效途径之一。针对配制钢渣微粉UHPC的原材料因素影响问题,采用正交试验法对不同配合比下钢渣微粉UHPC的抗压、抗折、劈裂抗拉等强度指标及弹性模量进行测试,以分析硅灰、钢渣微粉、河砂和钢纤维四种原材料掺量对其各项性能指标的影响效果。结果表明:钢纤维体积掺量对钢渣微粉UHPC的各项力学性能影响最为显著,河砂、钢渣微粉掺量影响程度较大,硅灰掺量影响程度较小;立方体抗压强度、抗折强度、静力受压弹性模量指标下的显著性影响顺序为钢纤维>河砂>钢渣微粉>硅灰,轴心抗压强度、劈裂抗拉强度指标下的显著性影响顺序为钢纤维>钢渣微粉>河砂>硅灰;经正交试验得出最佳配合比方案,按该方案制备的钢渣微粉UHPC具有良好的工作性能与力学性能。

关键词: 钢渣微粉, 超高性能混凝土, 正交试验, 力学性能, 影响因素, 配合比

Abstract: To promote the harmless treatment and resourceful use of steel slag, making steel slag into powder instead of quartz powder to prepare ecological ultra-high performance concrete (UHPC) is one of the effective ways to reuse it. To address the issue of the influences of raw material factors in the formulation of steel slag powder UHPC, the strength indicators of steel slag powder UHPC such as compressive strength, flexural strength, splitting tensile strength and elastic modulus were tested under different mix proportion using orthogonal test method, so as to analyze the effect of silica fume content, steel slag powder content, river sand content and steel fiber content on their various performance indicators. The test results show that the volume content of steel fiber has the most significant effect on the mechanical properties of steel slag powder UHPC, while the content of river sand and steel slag powder has a greater effect and the content of silica fume has a smaller effect. The order of significance in the indexes of cubic compressive strength, flexural strength and static compressive elasticity modulus is steel fiber>river sand>steel slag powder>silica fume. The order of significance in the indexes of axial compressive strength and splitting tensile strength is steel fiber>steel slag powder>river sand>silica fume. The optimum mix proportion scheme is obtained by orthogonal test, and the steel slag powder UHPC prepared according to this scheme has good working performance and mechanical properties.

Key words: steel slag powder, ultra-high performance concrete, orthogonal test, mechanical property, influencing factor, mix proportion

中图分类号:

TU528.062

唐咸远, 马杰灵, 罗杰, 何滨冰, 陆澄剑. 钢渣微粉生态型超高性能混凝土力学性能影响因素分析[J]. 硅酸盐通报, 2023, 42(2): 607-617.

TANG Xianyuan, MA Jieling, LUO Jie, HE Binbing, LU Chengjian. Analysis of Influencing Factors on Mechanical Properties of Steel Slag Powder Ecological Ultra-High Performance Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(2): 607-617.

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钢渣微粉生态型超高性能混凝土力学性能影响因素分析

Analysis of Influencing Factors on Mechanical Properties of Steel Slag Powder Ecological Ultra-High Performance Concrete

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