摘要
为促进建筑垃圾再生骨料的工程应用,以再生细骨料取代天然砂为研究参数,配置4组配合比的再生骨料混凝土,并制作立方体和棱柱体抗压强度试件,通过不同龄期的4组再生骨料混凝土抗压性能试验,研究再生细骨料取代率对富含砖粒再生混凝土抗压性能的影响规律。试验结果表明,在28 d龄期下再生混凝土的抗压性能随再生细骨料取代率的增加而减小,而在3 d和7 d龄期下再生细骨料取代率对再生混凝土的抗压性能的影响较小。提出了考虑再生细骨料取代率影响的富含砖粒再生混凝土棱柱体抗压强度与立方体抗压强度关系计算模型。
In order to promote the engineering application of the recycled aggregate of construction waste, the natural aggregate was substituted by regenerated fine aggregate for the research parameters to configure four groups of recycled aggregate concrete.The cubic and prismatic compressive strength specimens were made.Based on the compressive strength tests for four groups of recycled aggregate concrete at different ages, the effect of the regenerated fine aggregate substitution ratio on the compressive properties of brick-rich recycled concrete was studied.The results show that the compressive strength of recycled concrete decreases under 28d age with the increase of the replacement rate of regenerated fine aggregate, but the effect is less at 3d and 7d.The calculation model between axial compressive strength and cuboidal compressive strength was obtained considering the influence of regenerated fine aggregate substitution rate.
作者
张亚飞
安新正
牛薇
杨莹莹
ZHANG Yafei;AN Xinzheng;NIU Wei;YANG Yingying(College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, Chin)
出处
《河北工程大学学报（自然科学版）》
CAS
2018年第2期71-74,共4页
Journal of Hebei University of Engineering:Natural Science Edition
基金
河北省自然科学基金资助项目(E2015204111)
河北省科学技术研究与发展计划资助项目(15273609D)
关键词
再生细骨料
富含砖粒再生混凝土
取代率
抗压性能
regenerated fine aggregate
rich in brick recycled concrete
substitution rate
compression performance.
