黄麻纤维改性混凝土的制备及性能研究  

Study on preparation and properties of jute fiber reinforced concrete

作　　者：王伟芳[1] WANG Wei-fang(Weinan Vocational and Technical College,Weinan 714000,China)

机构地区：[1]渭南职业技术学院,陕西渭南714000

出　　处：《化学工程师》2023年第10期89-93,共5页Chemical Engineer

基　　金：陕西省职业技术教育学会2021年度职业教育研究课题(2021SZXYB21):建筑工程技术高水平专业群建设的研究与实践;渭南职业技术学院工程服务有限公司科研项目(KY2021-02):回弹法检测混凝土强度的准确性研究。

摘　　要：针对建筑混凝土力学性能和环境耐性较差的问题,提出一种新型黄麻纤维混凝土的制备。实验以力学性能为指标,通过正交实验对纤维混凝土配比进行优化,并对优化后纤维混凝土性能进行研究。实验结果表明,在水灰比为0.30,纤维长度和掺量分别为16mm和3kg·m^(-3)的条件下,制备的混凝土综合性能最佳。此时,混凝土抗压强度为75.3MPa,劈裂抗拉强度为5.67MPa。经过多次冻融循环后,混凝土质量损失率低于0.5%,相对动弹性模量约为88%,表现出良好的性能。ln view of the poor mechanical properties and environmental resistance of building concrete,a new type of jute fiber concrete was proposed.First of all,the orthogonal test was used to optimize the proportion of fiber reinforced concrete,than the performance of the optimized fiber reinforced concrete was studied.The test results showed that the comprehensive performance of the concrete was the best when the water cement ratio was 0.30,the fiber length and content were 16mm and 3kg·m^(-3),respectively.At this time,the compressive strength of concrete was 75.3MPa,and the splitting tensile strength was 5.67MPa.After many freeze-thaw cycles,the mass loss rate of concrete was less than 0.5%,and the relative dynamic elastic modulus was about 88%,which showing good performance,

关 键 词：桥梁混凝土 纤维混凝土 力学性能 抗冻性能 

分 类 号：TQ175[化学工程—硅酸盐工业]