期刊论文

Experimental Study on Mechanical Properties of Low-volume Rape Straw Fiber Concrete

中文

中国农业科技导报

1008-0864

2019

21

6

117-123

10.13304/j.nykjdb.2019.0057

湖南省自然科学基金项目（2019JJ60030）； 衡阳市农机局科技项目（2018xny-JS151）资助；

本校为第一机构

为了探索秸秆纤维对混凝土力学性能的影响机理,研究了在水灰比为0.50、强度等级为C35条件下,不同油菜秸秆纤维长度和油菜秸秆体积掺量的混凝土力学性能.通过测试混凝土的抗压、劈裂抗拉、抗折强度,分析油菜秸秆纤维对混凝土力学性能的影响规律,并使用扫描电镜验证分析结果.结果 表明:混凝土的抗压、劈裂抗拉、抗折强度随着油菜秸秆纤维长度的增加和掺量的提高均呈现先增大后减小的趋势;当纤维长度30～40 mm,体积掺量0.1％时,抗压强度为47.43 MPa,比对照组提高16.45％,当纤维长度20～ 30 mm,体积掺量0.2％时,混凝土的劈裂抗拉和抗折强度为3.71 MPa、9.1 MPa,比对照组提高9.12％、6.64％,扫描电镜...

In order to explore the effect of straw fiber on the mechanical properties of concrete,this paper researched the mechanical properties of concrete with different lengths of rape straw and fiber volume content of rapeseed under the condition that the water-cement ratio was 0.50 and the strength grade was C35. The influence of rape straw fiber on the mechanical properties of concrete was analyzed by measuring the compressive,splitting,tensile strength and flexural strength of the concrete,and the results were verified by scanning electron microscopy. The results showed that with the increase of ...