Mechanical Properties and Volumetric Deformation of Ramie Fiber Reinforced Calcium Sulfoaluminate Cement‑Based Materials

被引：0

作者：

Liao Y. ^{[1
,2
,3
]}

Chen J. ^{[1
]}

Zhang T. ^{[1
]}

机构：

[1] School of Urban Construction, Wuhan University of Science and Technology, Wuhan

[2] Institute of High‑Performance Engineering Structure, Wuhan University of Science and Technology, Wuhan

[3] Hubei Provincial Engineering Research Center of Urban Regeneration, Wuhan University of Science and Technology, Wuhan

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2023年 / 26卷 / 11期

关键词：

calcium sulfoaluminate cement; compressive strength; flexural strength; interfacial flexural‑tensile strength; ramie fiber; volumetric deformation;

D O I：

10.3969/j.issn.1007-9629.2023.11.004

中图分类号：

学科分类号：

摘要：

The evolution of the mechanical properties and volumetric deformation of calcium sulfoaluminate cement‑based materials with different contents of ramie fiber（RF）was studied through the flexural strength，compressive strength，interfacial flexural‑tensile strength，volumetric deformation and infrared spectroscopy analysis. The results show that the flexural strength and compressive strength of calcium sulfoaluminate cement pastes increase first and then decrease with the increase of RF contents（volume fraction，same as follow），and reaches their peak values when the fiber content is 0.50%. Under constraint conditions，the addition of RF greatly improves the interfacial flexural tensile‑strength of cement paste. At 28 days，the interfacial flexural‑tensile strength with a fiber content of 0.75% is increased by 31.82% compared to the unconstrained specimen. The expansion of cement paste is increased by RF addition，and its autogenous deformation and drying deformation both grow with the increase of RF. The modified RF can play a stable role in the alkaline condition of cement‑based materials，and improve the overall strength of the sample. © 2023 Tongji University. All rights reserved.

引用

页码：1166 / 1172

页数：6

共 22 条

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