BFUFAC力学性能影响分析  

Analysis of mechanical properties of BFUFAC

作　　者：金生吉 吴永强 杨宇豪 许立 于贺 JIN Sheng-ji;WU Yong-qiang;YANG Yu-hao;XU Li;YU He(School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,沈阳110870

出　　处：《沈阳工业大学学报》2022年第3期341-348,共8页Journal of Shenyang University of Technology

基　　金：辽宁省交通厅科技项目(202006,202007,202009).

摘　　要：为了探究BFUFAC各主要成份对自身力学性能的影响,采用正交试验方法研究粉煤灰掺量、纤维掺量、纤维长度以及减水剂掺量四种组份对该复合材料抗压强度、劈裂抗拉强度和抗折强度的影响.采用多元线性回归拟合的方法,建立以上三种力学性能影响规律模型.试验结果表明:粉煤灰掺量对混凝土抗压强度的影响最为显著,纤维掺量对混凝土的劈裂抗拉强度和抗折强度的影响最为显著;在优先侧重BFUFAC的抗压强度、劈裂抗拉强度和抗折强度要求下,最优配合比分别为A_(1)B_(1)C_(2)D_(1)、A_(1)B_(1)C_(2)D_(2)和A_(1)B_(1)C_(2)D_(2).In order to investigate the effect of each main component of basaltic fiber ultrafine fly ash concrete(BFUFAC)on its mechanical properties,an orthogonal test method was used to study the effects of fly ash admixture,fiber admixture,fiber length and water reducer admixture on the compressive strength,splitting tensile strength and flexural strength of the composite.A multiple linear regression fitting method was used to establish the influence rule models for above-mentioned three mechanical properties.The results show that the fly ash admixture has the most significant effect on the compressive strength of concrete,and the fiber admixture has the most significant effect on the splitting tensile and the flexural strengths of concrete.For the priority of compressive strength,splitting tensile strength and flexural strength required by BFUFAC,the optimal ratios are A_(1)B_(1)C_(2)D_(1)、A_(1)B_(1)C_(2)D_(2) and A_(1)B_(1)C_(2)D_(2),respectively.

关 键 词：玄武岩纤维 超细粉煤灰 超量取代法 正交试验 极差法 方差法 线性回归 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]