摘要
通过正交试验,利用方差分析的方法,研究骨料粒径、设计空隙率、水胶比、粉煤灰掺量对植生型生态混凝土28d立方体抗压强度的影响程度及规律,进而得出优化方案.结果表明:正交试验中最小的抗压强度为8.83MPa,能够满足设计指标要求;四因素中,设计空隙率对抗压强度的影响最为显著,其次是粉煤灰掺量,水胶比、骨料粒径虽存在一定影响,但影响效果不显著,抗压强度随骨料粒径、设计空隙率、粉煤灰掺量的增大而减小,而随水胶比的增大呈先增大后减小的趋势;在强度指标下,通过性能分析得出由骨料粒径为13.2～16mm,设计空隙率为22%,水胶比为0.30,粉煤灰掺量为10%配合比制备的生态混凝土性能最优.
By means of orthogonal test and variance analysis method,the influence of aggregate size,design void fraction,water-binder ratio and fly ash content on 28-day cube compressive strength of the green-growing ecological concrete was studied,and the optimum scheme was obtained.The results show that the minimum compressive strength is 8.83 MPa in the orthogonal test,which can meet the requirements of the design index.Among the four factors,the design void ratio has the most significant effect on the compressive strength,followed by the fly ash content,while the water-binder ratio and aggregate size have a certain effect,but the effect is not significant.The compressive strength decreases with the increase of aggregate size,design void ratio and fly ash content,but increases first and then decreases with the increase of water-binder ratio.Under the strength index,the optimum performance of the green-growing ecological concrete is obtained from the aggregate size of 13.2-16mm,the design void ratio of 22%,the water-binder ratio of 0.30,and the fly ash content of 10%.
作者
蒋希雁
黄前龙
于海
王皓宇
冯峰
杨尚青
JIANG Xi-yan;HUANG Qian-long;YU Hai;WANG Hao-yu;FENG feng;YANG Shang-qing(Hebei Institute of Architecture and Civil Engineering,Zhangjiakou,Hebei 075000;Hebei KeyLaboratory for Diagnosis,Reconstruction and Anti-disaster of Civil Engineering,Zhangjiakou,Hebei 075000)
出处
《河北建筑工程学院学报》
CAS
2019年第1期60-64,68,共6页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
2018年度张家口市科学技术研究与发展计划项目(1811009B-08)
河北建筑工程学院研究生创新基金项目(XB201815)
关键词
植生型生态混凝土
配合比
正交试验设计
立方体抗压强度
green-growing ecological concrete
mix proportion
orthogonal experimental design
cube compressive strength
