碾压混凝土与钢筋粘结性能试验研究  

Research on the bonding performance between roller-compacted concrete and reinforcement

作　　者：李佳睿 崔炜[1] 刘毅[1] 闫俊义 刘立珍 舒鸿忠 邓检强 LI Jiarui;CUI Wei;LIU Yi;YAN Junyi;LIU Lizhen;SHU Hongzhong;DENG Jianqiang(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;China Three Gorges New Energy(Group)Co.Ltd.,Beijing 101100,China;Three Gorges New Energy Meltwater Power Generation Co.Ltd.,Liuzhou 545320,China)

机构地区：[1]中国水利水电科学研究院,北京100038 [2]中国三峡新能源(集团)股份有限公司,北京101100 [3]三峡新能源融水发电有限公司,广西柳州545320

出　　处：《新型建筑材料》2025年第2期32-36,共5页New Building Materials

基　　金：中国三峡新能源(集团)股份有限公司科研项目(45003101)。

摘　　要：通过实验室钢筋拉拔试验,得到加压重块振捣成型与不加压重块的碾压混凝土与钢筋间的拉拔力-滑移曲线,分析碾压混凝土与钢筋的拉拔变化规律。在现场钢筋拉拔试验中,通过对不同锚固长度与不同直径的钢筋进行拉拔,分析碾压混凝土与钢筋的粘结性能,并验证该配合比的碾压混凝土工作性能能否满足要求。结果表明:实验室拉拔试验与现场试验结果相符合,碾压混凝土与钢筋的粘结性能较好,粘结强度较常态混凝土仅降低了约10%;经充分碾压的混凝土与钢筋的粘结强度较不充分碾压提高了约12%;在设计配合比下,碾压混凝土工作性能较好,层间结合较密实。In the tensile test of concrete reinforcement in the laboratory,the tensile force-slip curves between the RCC and the steel bar with full and insufficient vibration were obtained by the specimens made by different vibration and rolling methods,and the drawing change law of RCC and steel bar was analyzed.Based on the results of the indoor steel bar drawing test,the bonding performance of RCC and steel bar was analyzed by pulling steel bars with different anchorage lengths and different diameters in the field test,and whether the RCC working performance of the mix ratio met the requirements was verified.The results show that the laboratory pull-out test is consistent with the field test results,and the bonding performance of RCC and steel bar is better,which is not much different from that of normal concrete and steel bar,and the former is about 10%lower than the latter.The bond strength of fully rolled concrete and steel bars is 12%higher than that of insufficient rolling;Under the mix ratio,RCC has good working performance and dense interlayer bonding.

关 键 词：碾压混凝土 粘结性能 拉拔试验 粘结力 

分 类 号：TU528[建筑科学—建筑技术科学]