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椰壳纤维加筋红黏土强度特征 被引量:1

Strength characteristics of the red caly reinforced by coir fiber
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摘要 为改善红黏土的工程性质,使用椰壳纤维增强红黏土,并通过无侧限抗压强度试验和三轴压缩试验研究增强机理,探究椰壳纤维的长度和掺量对椰壳纤维加筋红黏土强度特征的影响。结果表明:椰壳纤维的掺入可以提高红黏土的强度和延性;椰壳纤维加筋土的无侧限抗压强度和抗剪强度随着纤维长度的增加先增大后减小,在纤维长度为5 cm时,达到最大值;当椰壳纤维掺量小于0.5%时,随着纤维掺量的增加,椰壳纤维加筋土的强度也随之增加,而当纤维掺量超过0.5%时,强度开始下降;当纤维掺量为0.5%、纤维长度为5 cm时,加筋效果最佳。 In order to improve the engineering properties of red clay,coir fiber was used in the strengthening of red clay.The influences of coir fiber length and coir fiber content on the strength characteristics of coir fiber reinforced red clay were explored through unconfined compression test and triaxial test,and the underlying reinforcing mechanism was studied.The results show that the strength and ductility of red clay can be improved by adding coir fiber.The unconfined compressive strength and shear strength of coir fiber reinforced soil first increase and then decrease with the increase of fiber length,and those indicators reach the maximum when the fiber length is 5 cm.When the coir fiber content is less than 0.5%,the strength of coir fiber reinforced soil also increases with the increase of fiber content,while the value starts to decline when the content of fiber exceeds 0.5%.When the fiber content is 0.5%and the fiber length is 5 cm,the best reinforcement effect can be achieved.
作者 曹炜强 李良勇 张青松 曹乾 黄睿龙 CAO Weiqiang;LI Liangyong;ZHANG Qingsong;CAO Qian;HUANG Ruilong(School of Civil Engineering and Architecture,Hainan University,Haikou 570228,China)
出处 《中国科技论文》 CAS 北大核心 2023年第12期1378-1382,共5页 China Sciencepaper
基金 国家自然科学基金资助项目(42207190) 海南省自然科学基金资助项目(122RC541)。
关键词 椰壳纤维 红黏土 无侧限抗压强度试验 三轴压缩试验 coir fiber red clay unconfined compression test triaxial test
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