复合材料科学与工程Issue(2)：20-27,90,9.DOI:10.19936/j.cnki.2096-8000.20250228.003
碱处理椰壳纤维对海水海砂混凝土力学性能影响研究
Study on the effect of alkali-treated coir fibers on the mechanical properties of seawater sea sand concrete
摘要
Abstract
To address the problem of the high cost of freshwater river sand transported over long distances from land in the construction of marine and island projects,and to make resourceful use of the reinforcing and toughening properties of coir fibers,the alkali-treated coir fiber-reinforced seawater sea sand concrete was proposed as a high performance,cost-effective and low-carbon building material.By designing three kinds of macroscopic destructive tests(compressive,splitting tensile and flexural tensile strength tests),and combination of macroscopic experimen-tal damage phenomena and microstructural electron microscopic analyses,the effects of alkali-treated coir fiber's length and content on the mechanical properties of seawater sea sand concrete were studied and verified.The absorp-tivity of natural and alkali treated coir fibers was tested in different solutions,and the microstructure of the fibers was observed by electron microscopy.It is proved that alkali treatment could not only improve the roughness of coir fibers,weaken the moisture absorption rate of the fibers,but also effectively enhance the bonding effect between the fibers and the concrete.关键词
椰壳纤维/海水海砂混凝土/碱处理/力学性能/复合材料Key words
coir fiber/seawater sea sand concrete/alkali treatment/mechanical properties/composites分类
通用工业技术引用本文复制引用
程艳雯,赵菲,黄振辉,张青松,李良勇,习鑫强..碱处理椰壳纤维对海水海砂混凝土力学性能影响研究[J].复合材料科学与工程,2025,(2):20-27,90,9.基金项目
海南省自然科学基金高层次人才项目(520RC549) （520RC549）
国家自然科学基金青年项目(42207190) （42207190）
