期刊论文

中文

混凝土

1002-3550

2018

1

116-120

10.3969/j.issn.1002-3550.2018.01.029

国家自然科学基金资助项目（51308441） 陕西省自然科学基础研究计划（2016JM5073） 陕西省教育厅专项科研计划项目（2013JK0951）

本校为第一机构

为研究植物纤维剑麻、稻壳的掺入对水泥砂浆力学性能的影响,通过配合比设计对不同体积掺量和不同长度的剑麻纤维和稻壳砂浆制作试件,分别进行了28 d抗压、抗折强度试验和电镜扫描分析。研究表明剑麻纤维和稻壳在不同程度上增强了水泥基材料力学性能。其中长度为8 mm的剑麻纤维对砂浆抗压强度提高明显,16 mm的剑麻纤维对抗折强度提高明显。稻壳因较高吸水性通过内养护作用进一步提高水泥砂浆性能,剑麻纤维作为分散相约束基体变形并阻碍基体错位运动从而提高水泥砂浆性能。

For studying effects on mechanical properties of cement mortar with plant fibers- the sisal fiber and the rice husk, specimens were made with different fiber volume contents and fiber lengths through the mixture ratio design.The compressive and flexural strength tests and SEM analysis of these specimens were completed.Experiment shows that the cement-based material＇s mechanical behaviors are strengthened by the sisal fiber and the rice husk.The compressive strength of cement mortar is increased obviously by 8 mm sisal fibers, and the flexnral ...