椰壳纤维增强改性水泥砌块抗压耐久性试验  

Compression durability test of coconut shell fiber reinforced modified cement bricks

作　　者：郭晋杰 GUO Jinjie(Shenzhen Bay Area Urban Construction Development Co.,Ltd.,Shenzhen 51805,China)

机构地区：[1]深圳湾区城市建设发展有限公司,广东深圳518063

出　　处：《粘接》2023年第5期152-155,共4页Adhesion

摘　　要：研究了在水泥土砌块中引入椰壳纤维,在轴向压缩和弯曲载荷下测试了不同纤维质量分数的椰子纤维增强的水泥土砌块,以检查材料在峰值的承载能力、峰值后残余强度和韧性方面的响应。结果表明,纤维增强水泥土砌块在隔热和机械性能方面具有预期的技术性能,掺入椰壳纤维后提高了水泥土砌块的剩余强度、延性和能量吸收能力。水泥土砌块中添加椰壳纤维可减少碱侵蚀和酸侵蚀。对于冻融和干湿循环,也显示出类似的耐久性改善。The introduction of coconut fiber into cement bricks was investigated.Coconut fiber reinforced cement bricks with different fiber weight fractions were tested under axial compression and bending loads to check the re⁃sponse of the materials in terms of peak load capacity,post peak residual strength and toughness.Results show that fiber reinforced cement bricks have expected technical performance in thermal insulation and mechanical proper⁃ties.It is observed that coconut fiber reinforcement greatly improves the residual strength,ductility and energy ab⁃sorption of cement bricks.Adding coconut fiber to mortar can reduce alkali erosion and acid erosion.Similar dura⁃bility improvements are also shown for freeze-thaw and dry wet cycles.

关 键 词：建筑材料 水泥土砌块 椰壳纤维 力学性能 

分 类 号：TQ342.9[化学工程—化纤工业]