摘要
本文采用直剪试验对椰壳纤维加筋红黏土的抗剪强度进行了研究,结果表明:椰壳纤维能提高红黏土的抗剪强度,但其抗剪强度的提高主要体现在粘聚力的增加上;椰壳纤维长度小于5 cm时,随椰壳纤维长度的增加,红黏土的抗剪强度增大,椰壳纤维长度达到5 cm后,红黏土的抗剪强度反而下降;椰壳纤维掺量小于0.5%时,随椰壳纤维掺量的增加,红黏土的抗剪强度增大,而当椰壳纤维长度达到0.5%后,红黏土的抗剪强度反而下降;椰壳纤维掺量对红黏土抗剪强度的影响大于椰壳纤维长度对红黏土抗剪强度的影响.
In the report,the direct shear test was performed to analyze the shear strength of red clay reinforced with coir fiber.The results indicated that the coir fiber can improve the shear strength of red clay,however,the increase of shear strength is mainly reflected in the increase of cohesion.When the length of coir fiber is less than 5 cm,the shear strength of red clay increases with the increasing of the length of coir fiber.When the length of coir fiber reaches 5 cm,the shear strength of red clay decreases instead.When the content of coir fiber is less than 0.5%,the shear strength of red clay increases with the increasing of the content of coir fiber.When the content of coir fiber reaches 0.5%,the shear strength of red clay decreases instead.Our findings suggested that the effect of the content of coir fiber on the shear strength of red clay is greater than that of length of coir fiber.
作者
李良勇
马炜迪
曹宝珠
Li Liangyong;Ma Weidi;Cao Baozhu(College of Civil Engineering and Architecture,Hainan University,Haikou 570228,China)
出处
《海南大学学报（自然科学版）》
CAS
2020年第3期304-308,共5页
Natural Science Journal of Hainan University
基金
海南省自然科学基金青年基金(519QN183)
海南大学科研启动基金(KYQD(2k)1972)
海南省重大科技计划项目(ZDKJ201803)。
关键词
椰壳纤维
红黏土
力学性质
coir fiber
red clay
mechanical properties
