粉煤灰混凝土保护层锈胀开裂裂缝形态试验研究  

Experimental Study on Shapes of Corrosion-induced Cover Cracking of Fly Ash Concrete

作　　者：韩少渊 李春晖 尹利[2] 赵教练[3] 

机构地区：[1]中国煤炭科工集团武汉设计研究院,湖北武汉430064 [2]陕西黄河集团有限公司,陕西西安710043 [3]陕西省渭南师范学院,陕西渭南714000

出　　处：《水利与建筑工程学报》2012年第3期67-70,共4页Journal of Water Resources and Architectural Engineering

摘　　要：在普通混凝土钢筋锈蚀研究的基础上,围绕粉煤灰混凝土中钢筋锈蚀机理、影响粉煤灰混凝土中钢筋锈蚀的因素以及粉煤灰混凝土保护层锈胀开裂条件等内容展开,并通过电化学快速锈蚀的方法进行粉煤灰混凝土保护层锈胀开裂试验,对影响粉煤灰混凝土保护层锈胀开裂裂缝形态的因素进行了分析。结果表明:保护层厚度和钢筋间距不同对粉煤灰混凝土保护层锈胀开裂裂缝形态的影响较为明显。Based on the former research on corrosion and expansion for normal concrete,the factors and machanism of corrosion of the reinforcing bar in fly ash concrete are analyzed here,and the amount of corrosion to crack the cover of fly ash concrete is also referred to,which are investigated by an accelerated corrosion test.The results indicate that the different cover thickness and reinforcing distance are the important influencing parameters on the shapes of cover cracking.

关 键 词：粉煤灰混凝土 快速锈蚀 保护层锈胀开裂 裂缝形态 

分 类 号：TU528.2[建筑科学—建筑技术科学]