聚甲醛粗纤维超高强混凝土力学性能研究

doi:10.19936/j.cnki.2096-8000.20220828.007

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (8): 52-57.DOI: 10.19936/j.cnki.2096-8000.20220828.007

聚甲醛粗纤维超高强混凝土力学性能研究

夏旸昊¹, 杨鼎宜^1,2*, 赵林¹, 钱云峰¹, 高函¹

1.扬州大学建筑科学与工程学院,扬州225127;
2.扬州大学绿色建筑材料研究所,扬州225127

收稿日期:2021-09-15 出版日期:2022-08-28 发布日期:2022-09-27
通讯作者: 杨鼎宜(1965-),女,博士,教授,博导,主要从事水泥基复合材料性能方面的研究,ydy1991@163.com。
作者简介:夏旸昊(1998-),男,硕士研究生,主要从事纤维混凝土力学性能方面的研究。
基金资助:
国家重点研发计划(2018YFD1101002);江苏省2021年研究生实践创新计划项目(SJCX21_1580)

Experimental study on the mechanical properties of ultra-high strength concrete with polyformaldehyde crude fiber

XIA Yang-hao¹, YANG Ding-yi^1,2*, ZHAO Lin¹, Qian Yun-feng¹, Gao Han¹

1. College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China;
2. Research Institute of Green Building Materials, Yangzhou University, Yangzhou 225127, China

Received:2021-09-15 Online:2022-08-28 Published:2022-09-27

摘要/Abstract

摘要： 为了探究聚甲醛(POM)粗纤维对超高强混凝土(UHSC)力学性能的影响,以促进其推广与应用,研究了POM粗纤维体积掺量(0%~2.0%)对UHSC工作性能、抗压强度、抗折强度、弯曲韧性和断裂韧度等性能的影响。试验结果表明:POM粗纤维的掺入会降低UHSC的工作性能,提高其抗压强度、抗折强度、弯曲韧性和断裂韧度。纤维掺量为1.0%时,其抗折强度提升明显;纤维掺量为1.5%的试件抗压强度最大,同时弯曲韧性的改善效果最为显著,断裂韧度也得到了明显提升。

关键词: 聚甲醛粗纤维, 超高强混凝土, 水泥基复合材料, 弯曲韧性, 断裂韧度

Abstract: In order to explore the influence of polyformaldehyde (POM) crude fiber on the mechanical properties of ultra-high strength concrete (UHSC) to promote its popularization and application, the working performance, compressive strength, flexural strength, bending toughness and fracture toughness of ultra-high strength concrete (UHSC) with the volume content of POM fiber from 0% to 2.0% were studied. The experimental results show that the addition of POM fiber reduces the performance of UHSC, but it can improve the compressive strength, flexural strength, bending toughness and fracture toughness of UHSC. When the fiber content is 1.0%, its flexural strength increases obviously. The specimen with fiber content of 1.5% has the largest compressive strength, and the improvement effect on bending toughness is the most significant. And the fracture toughness is also significantly improved.

Key words: polyformaldehyde crude fiber, ultra-high strength concrete, cement-based composites, bend ductility, fracture toughness

中图分类号:

TB332

夏旸昊, 杨鼎宜, 赵林, 钱云峰, 高函. 聚甲醛粗纤维超高强混凝土力学性能研究[J]. 复合材料科学与工程, 2022, 0(8): 52-57.

XIA Yang-hao, YANG Ding-yi, ZHAO Lin, Qian Yun-feng, Gao Han. Experimental study on the mechanical properties of ultra-high strength concrete with polyformaldehyde crude fiber[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(8): 52-57.

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聚甲醛粗纤维超高强混凝土力学性能研究

Experimental study on the mechanical properties of ultra-high strength concrete with polyformaldehyde crude fiber

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