冻融循环下钢筋与蒸压加气混凝土黏着力的研究  

Study on adhesion between steel bar and autoclaved aerated concrete under freeze-thaw cycles

作　　者：林佳声 LIN Jia-sheng

机构地区：[1]福建省建筑科学研究院有限责任公司,福建省绿色建筑技术重点实验室,福建福州350025

出　　处：《砖瓦》2021年第12期40-42,共3页Brick-tile

摘　　要：研究在冻融作用下,钢筋与蒸压加气混凝土的黏结性能。通过试验研究了钢筋外形、钢筋黏结长度、钢筋直径和蒸压加气混凝土强度对钢筋黏着力的影响,以及不同的冻融循环次数下,各类试件钢筋黏着力的变化趋势。试验表明在冻融作用下:①带肋钢筋与蒸压加气混凝土的黏结性能要明显优于光圆钢筋;②钢筋黏结长度越长,黏结性能越差;③钢筋直径越大,钢筋与蒸压加气混凝土的黏着力降低幅度越明显;④蒸压加气混凝土抗压强度越低,钢筋黏着力下降幅度越大。This paper studies the bonding performance of steel bars and autoclaved aerated concrete under the effects of freeze-thawing.Experiments show that under the effects of freeze-thawing cycle:①The bonding performance of ribbed steel bars and autoclaved aerated concrete is significantly better than that of plain round steel bars;②The longer the bonding length of steel bars,the worse the bond⁃ing performance;The lower the adhesive force of compressed aerated concrete is more obvious;④The lower the compressive strength of autoclaved aerated concrete,the greater the decrease of the adhesive force of steel bars.

关 键 词：钢筋黏着力 蒸压加气混凝土 冻融循环 

分 类 号：TU528.2[建筑科学—建筑技术科学]