长江科学院院报2024，Vol.41Issue(6)：156-163,8.DOI:10.11988/ckyyb.20230006
秸秆/聚丙烯纤维-玻化微珠保温混凝土基本性能正交试验
Orthogonal Experiment on Basic Properties of Thermal Insulation Concrete Mixed with Straw,Polypropylene Fiber and Glazed Hollow Beads
摘要
Abstract
Utilizing an orthogonal experimental design,we evaluated the primary properties of 16 groups of thermal insulation concrete mixed with straw,polypropylene fiber and glazed hollow beads as well as three groups of con-crete mixed with merely glazed hollow beads.Further variance and range analysis examined the impact of three sig-nificant factors on the compressive and splitting tensile strengths of cubic specimens.The three factors include:vol-ume fraction of straw powder(Vs),sand-replacing glazed hollow bead ratio(Vc),and volume fraction of polypro-pylene fiber(VP).Our findings reveal that incorporation of glazed hollow beads enhances the concrete's thermal insulation properties and workability yet results in diminished strength.Notably,glazed hollow beads significantly reduce the compressive strength of concrete,with observed maximum losses reaching 24.64％.Meanwhile,the im-pacts of straw powder and polypropylene fiber on compressive strength proved to be minimal and can be neglected.In contrast,polypropylene fiber markedly reinforces the tensile strength,inducing a maximal increase of 16.72％and a substantial improvement in the tension-to-compression ratio.Regression analysis of the experimental outcomes facilitates the development of predictive models for both compressive and tensile strength of the concrete mixed with straw,polypropylene fiber and glazed hollow beads,yielding promising predictions.关键词
保温混凝土/秸秆/聚丙烯纤维/玻化微珠/力学性能/正交试验/强度预测模型Key words
thermal insulation concrete/straw/polypropylene fiber/glazed hollow beads/mechanical properties/orthogonal experiment/strength prediction model分类
建筑与水利引用本文复制引用
姚韦靖,韩金秀,方冉,庞建勇..秸秆/聚丙烯纤维-玻化微珠保温混凝土基本性能正交试验[J].长江科学院院报,2024,41(6):156-163,8.基金项目
矿山建设工程安徽省高校重点实验室开放基金项目(GXZDSYS2022106) （GXZDSYS2022106）
淮南市指导性科技计划项目(2021022) （2021022）
安徽省高等学校自然科学研究重点项目(KJ2020A0297) （KJ2020A0297）
