排灌机械工程学报2025，Vol.43Issue(8)：819-825,7.DOI:10.3969/j.issn.1674-8530.24.0048
基于多元回归模型的钢-玄武岩纤维混凝土抗冻寿命
Frost resistance life of steel-basalt fiber reinforced concrete based on multiple regression model
摘要
Abstract
In order to investigate the splitting tensile properties of steel basalt fiber reinforced concrete(BFRC)and its deterioration rule under salt freezing conditions,three types of steel fiber BFRC(hook type,wave type,and copper-coated type)were prepared with the steel fiber volume contents of 0.8%,1.0%,and 1.2%,respectively.By comparing the splitting tensile strength of the test blocks,the optimal group was selected for freeze-thaw cycle tests under salt freezing conditions.Combined with mass loss rate,relative dynamic elastic modulus,and nuclear magnetic resonance(NMR)test,the de-terioration mechanism of concrete was analyzed.The freeze-thaw damage model of steel-basalt fiber reinforced concrete was established by a multiple regression analysis equation.The results show that the incorporation of steel fibers increases the concrete splitting tensile strength and frost resistance life.A-mong them,the end-hooked steel fiber BFRC with 1%by volume admixture has the highest split tensile strength and frost resistance,which are 66%and 40%higher than the baseline group.The fitting equa-tions for splitting tensile strength,proportion of harmful pores,saturation of bound fluid,and number of freeze-thaw cycles are established by multiple linear regression,the prediction accuracy is high with an average relative error of only 2.88%.关键词
玄武岩纤维混凝土/钢纤维/多元回归分析/核磁共振/抗冻寿命Key words
basalt fiber reinforced concrete/steel fiber/multiple regression analysis/NMR/frost resistance life分类
农业科技引用本文复制引用
张紫键,姚占全,马快乐..基于多元回归模型的钢-玄武岩纤维混凝土抗冻寿命[J].排灌机械工程学报,2025,43(8):819-825,7.基金项目
内蒙古农业大学博士科研启动基金项目(BJ2014-4) （BJ2014-4）
广西高校中青年教师科研基础能力提升项目(2024KY0935) （2024KY0935）
