玉米皮纤维聚苯乙烯泡沫水泥基复合材料物理、力学及抗冻性能试验研究

王秀丽; 吴征; 陈志华; 潘旭宾

doi:10.13204/j.gyjzG22052414

玉米皮纤维聚苯乙烯泡沫水泥基复合材料物理、力学及抗冻性能试验研究

doi: 10.13204/j.gyjzG22052414

1. 兰州理工大学土木工程学院, 兰州 730050;
2. 天津大学建筑工程学院, 天津 300072

基金项目:

甘肃省建设厅项目(JK2020-26)。

国家重点研发计划项目(2019YFD1101004)

详细信息

作者简介:
王秀丽,女,1963年出生,教授,博士生导师。

通讯作者:
陈志华,zhchen@tju.edu.cn。

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- 文章访问数: 57
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- 被引次数: 0
出版历程
- 收稿日期: 2022-05-24

Experimental Study on Physical and Mechanical Properties and Frost Resistance of EPS Cement-Based Composites with Corn Husk Fiber

1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China

摘要

摘要: 将不同质量分数的玉米皮纤维与不同质量分数的聚苯乙烯泡沫(EPS)颗粒复掺并添加到水泥基体中,研究玉米皮纤维EPS水泥基复合材料的密度、吸水率、抗压强度、抗折强度、劈裂抗拉强度以及抗冻性能。研究结果表明:玉米皮纤维的掺量越高,水泥基复合材料密度越低,但吸水率越高;水泥基复合材料抗压强度随着纤维掺量和EPS掺量的增加而降低,最大抗压强度为2.2 MPa,最小为0.8 MPa;EPS水泥基复合材料抗折强度随纤维掺量的增加先增大后减小,其中在纤维掺量为3%、EPS掺量为1.3%时,抗折强度最大为1.2 MPa;劈裂抗拉强度随纤维掺量的增加而增加,随EPS掺量的增加而减小,其中在纤维掺量在3%,EPS掺量在1.1%时劈裂抗拉强度最高为1.1 MPa。并且添加玉米皮纤维能够有效减少复合材料质量损失和强度损失,提高其抗冻性能。
- 玉米皮纤维 /
- 聚苯乙烯泡沫水泥基复合材料 /
- 力学性能 /
- 抗冻性能 /
- 微观结构
Abstract: The corn husk fibers with different mass fraction and expanded polystyrene (EPS) particles were mixed and added to the cement matrix to study their effects on the density, water absorption, compressive strength, flexural strength, splitting tensile strength and frost resistance of the composites. The results showed that the higher the content of corn skin plant fiber, the lower the density and the higher the water absorption of EPS cement-based composites; the compressive strength decreases with the increase of fiber content and EPS content, and the maximum compressive strength is 2.2 MPa and the minimum is 0.8 MPa; the flexural strength increases first and then decreases with the increase of fiber content, and when the fiber content is 3%, EPS content is 1.3%, the maximum flexural strength is 1.2 MPa; the splitting tensile strength increases with the increase of fiber content and decreases with the increase of EPS content, and when the fiber content is 3%, EPS content is 1.1%, and the highest splitting tensile strength is 1.1 MPa. What’s more, the addition of corn bran fiber can effectively reduce the mass loss and strength loss of the composite and improve its frost resistance.
- corn husk fiber /
- EPS cement-based composites /
- mechanical property /
- frost resistance /
- microstructure

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