棉花秸秆纤维混凝土力学性能正交试验  

Orthogonal test of mechanical properties of cotton straw fiber concrete

作　　者：苏强 王桦[2] 黄金坤[1] 张琴 刘宜思 SU Qiang;WANG Hua;HUANG Jinkun;ZHANG Qin;LIU Yisi(School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, Anhui, 232001, China;Mine Construction Branch, China Coal Research Institute, Beijing 100013, China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]煤炭科学研究总院建井研究分院,北京100013

出　　处：《中国科技论文》2020年第12期1405-1409,共5页China Sciencepaper

摘　　要：为了研究棉花秸秆纤维(cotton straw fibre,CSF)、粉煤灰(fly ash,FA)、陶粒(ceramsite,C)对混凝土力学性能的影响,配制棉花秸秆纤维混凝土(cotton straw fibre concrete,CSFC),应用正交试验法对CSFC的抗压、劈裂抗拉和轴心抗压强度进行极差和方差分析。结果表明:棉花秸秆纤维的掺入能显著提高混凝土的劈裂抗拉强度,棉花秸秆纤维、粉煤灰和陶粒对混凝土劈裂抗拉强度的最大提升幅度分别为41.64%、6.27%和0.026%;棉花秸秆纤维对混凝土劈裂抗拉强度的增强效应大于对抗压强度的增强效应。最后对正交试验结果进行了回归分析,得出了CSFC抗压强度和劈裂抗拉强度预测模型,模型精度较高。In order to study the effects of cotton straw fibre(CSF),fly ash(FA)and ceramsite(C)on the mechanical properties of concrete,cotton straw fibre concrete(CSFC)was prepared.The orthogonal test method was used to analyze the range difference,variance and axial compressive strength of CSFC.The results show that the incorporation of CSF can significantly improve the splitting tensile strength of concrete,and the maximum increase in splitting tensile strength of concrete with CSF,fly ash and ceramsite were 41.64%,6.27%and 0.026%,respectively.The strengthening effect of CSF on concrete splitting tensile strength was greater than that of compressive strength.Finally,regression analysis was carried out on the results of orthogonal test,and the prediction model of CSFC compressive strength and splitting tensile strength was obtained with higher accuracy.

关 键 词：混凝土 棉花秸秆纤维 粉煤灰 陶粒 正交试验 强度预测模型 

分 类 号：TU528.572[建筑科学—建筑技术科学]