摘要
为研究粉煤灰掺量与钢筋直径对钢筋与混凝土之间粘结性能的影响,通过对内贴应变片钢筋的拉拔试验,分析钢筋与粉煤灰混凝土之间的粘结强度-滑移关系,得出了粉煤灰掺量和钢筋直径对钢筋与粉煤灰混凝土之间粘结强度的影响规律。研究结果表明:钢筋与粉煤灰混凝土之间的粘结强度随粉煤灰掺量的增加而降低,当粉煤灰掺量一定时,钢筋与粉煤灰混凝土之间的粘结强度随着钢筋直径的增加呈先增后减趋势。
The effect of fly ash content and steel bar diameter on the bonding performance between steel bar and concrete was analyzed through the pull-out test of steel bars with strain gauges inside. In the test, the bond-slip relation between fly ash concrete and steel bar was demonstrated in a drawn curve. Furthermore, the influence of fly ash content and steel bar diameter on the bonding performance between steel bar and concrete was summarized from the bond-slip curve. The results showed that the bonding strength between steel bar and concrete was decreased with the increase of fly ash content. However, when the fly ash content kept constant, the bonding strength was raised firstly and then reduced by the increased diameters of steel bars.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2014年第4期724-731,共8页
Journal of Guangxi University（Natural Science Edition）
基金
国家自然科学基金资助项目(51368042)
内蒙古自治区2013年硕士研究生科研创新项目(S20131012702)
关键词
粉煤灰掺量
钢筋直径
平均粘结强度
钢筋自由端滑移
fly ash content
steel bar diameter
average bonding strength
free end slip of steel bar
