Abstract：In-service reinforced concrete bridges are prone to cracking under service loads, which would aggregate the corrosion from its environment. In this paper, experiment were conducted to study the carbonization of calcium whisker concrete under flexural loads, in which the influence of loading level and whisker quantity on the carbonization rates of concrete was analyzed. The research results indicate that the calcium whisker concrete has significantly improved anticarbonization performance than the plain concrete. As the quantity of whisker increases, the anti-carbonization performance drop slightly. The carbonization depth in the compression zone of the bending specimens are found obviously smaller than that in the tension zone, and this discrepancy grows with the flexural loads. Considering the whisker’s contribution to the stress and the stress distribution in the cross. section of a flexural specimen, a time-dependent carbonization model is established.
刘明辉 贾思毅 丁晓 刘萱 王雪艳. 弯曲荷载作用下硫酸钙晶须混凝土碳化研究[J]. 土木工程学报, 2020, 53(12): 66-73.
Liu Minghui Jia Siyi Ding Xiao Liu Xuan Wang Xueyan. Research on carbonation of CSW concrete under flexural loadings. 土木工程学报, 2020, 53(12): 66-73.
