期刊论文

Effect of sisal fiber to mechanical properties of cement mortar

中文

四川建筑科学研究

1008-1933

2018

44

3

87-92

10.19794/j.cnki.1008-1933.2018.03.018

国家自然科学基金（51474168）；

本校为第一机构

在水泥砂浆中加入剑麻纤维,研究了不同长度的剑麻纤维在不同纤维密集度(1 ~6 根／cm3)下对水泥砂浆抗压强度、抗折强度和压折比的影响,并通过扫描电镜(SEM)技术,分析了剑麻纤维对水泥砂浆的增强增韧的作用机理.试验研究表明,剑麻纤维密集度的变化对水泥砂浆的抗压和抗折强度的影响更大;较短的8 mm剑麻纤维对抗压强度提升较大,而较长的12 mm、16 mm剑麻纤维对抗折强度提升最大;抗压强度的临界纤维密集度为3 根／cm3,大于此纤维密度时抗压强度降低;纤维密集度为1 ~3根／cm3时对抗折强度提升较大;随着剑麻纤维密集度的增大,压折比呈减小趋势;水泥水化产物在剑麻纤维表面形成一层较为致密的水泥水化...

The sisal fiber was added in cement mortar,and the influence of different length and different fiber dense-degree（1 ~ 6 fibers/cm~3） on compressive strength,flexural strength and ratio of compressive strength to flexural strength were studied,and by scanning electron microscopy（SEM） technology,the strengthening and toughening mechanism of sisal fiber on the matrix was also explored in depth. Experimental results show that the change of sisal fiber dense-degree has a greater effect on the compressive and flexural strength of cement mortar; 8...