摘要
采用正交试验对钢-植物混杂纤维轻骨料混凝土(Steel-plant Fibre Hybrid Lightweight Aggregate Concrete,SPFLC)的抗压强度、抗拉强度、抗剪强度和导热性能进行了研究,并使用Matlab软件进行了多元线性回归分析,得到了SPFLC力学性能与导热性能的预测模型。结果表明:陶粒掺量对SPFLC的抗压强度、抗拉强度、抗剪强度和导热性能均有高度显著影响,对抗拉强度的贡献率最大为67.48%;陶砂掺量对SPFLC的抗拉强度几乎无影响,对抗压强度的贡献率最大为49.72%;钢纤维掺量对SPFLC的抗压强度和抗剪强度有高度显著影响,对抗剪强度的贡献率最大为42.36%;植物纤维掺量对SPFLC的力学性能和导热性能均有高度显著影响,对抗拉强度的贡献率最大为26.61%,且随着植物纤维掺量的增加,导热系数最大下降了23.7%;建立的SPFLC力学性能与导热性能预测模型的精度较高。
The compressive strength,tensile strength,shear strength and thermal conductivity of steel-plant hybrid fiber lightweight aggregate concrete(SPFLC)were studied by orthogonal tests.The prediction model of mechanical properties and thermal conductivity of SPFLC were obtained by multiple linear regression analysis with Matlab software.The results show that the ceramsite content has a highly significant influence on the compressive strength,tensile strength,shear strength and thermal conductivity of SPFLC,and the maximum contribution rate to tensile strength is 67.48%.The content of ceramic sand has almost no influence on the tensile strength of SPFLC,and the maximum contribution rate to compressive strength is 49.72%.The steel fiber content has a highly significant influence on the compressive strength and shear strength of SPFLC,and the maximum contribution rate to shear strength is 42.36%.The plant fiber content has a highly significant influence on the mechanical and thermal properties of SPFLC,among which the contribution rate to tensile strength is up to 26.61%,and the thermal conductivity decreases by 23.7%with the increase of plant fiber content.The prediction models of mechanical properties and thermal conductivity of SPFLC have a high accuracy.
作者
黄晓雯
庞建勇
王凤瑶
沈恒祥
刘宜思
HUANG Xiao-wen;PANG Jian-yong;WANG Feng-yao;SHEN Heng-xiang;LIU Yi-si(College of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232000,China)
出处
《混凝土与水泥制品》
2021年第4期55-59,共5页
China Concrete and Cement Products
基金
安徽省高校自然科学重大项目(KJ2015ZD20)
淮南市科技计划重大创新平台及创新人才团队专项项目(2017A055)。
关键词
纤维
正交试验
力学性能
导热性能
预测模型
轻骨料混凝土
Fiber
Orthogonal test
Mechanical property
Thermal conductivity
Prediction model
Lightweight aggregate concrete
