再生混凝土碳化性能研究进展与发展趋势_封金财.pdf

014 第 （总第 291 期） 混 凝 土 2 年 1期 原材料及辅助物料 Number 1 in 2014 （Total No.291） Concrete MATERIAL AND ADMINICLE doi ：10.3969/j.issn.1002-3550.2014.01.012 再生混凝土碳化性能研究进展与发展趋势 封金财，高燕蓉，夏 群，李浩然，田 斌 （ 常州大学 土木工程系，江苏 常州 213164） 摘 要： 首先从再生骨料、水胶比、胶凝材料掺量、养护条件和荷载水平等因素入手，归纳总结了现有再生混凝土碳化的研究成 果，指出提高再生骨料的品质是提升再生混凝土碳化抗力的主要措施之一。然后基于碳化机理分析，对既有碳化模型进行比较分 析，认为理论与经验相结合的碳化模型既有理论依据又便于工程应用。最后提出再生混凝土碳化研究的主要关键问题，包括确定 表征再生粗细骨料对结构碳化影响机制的指标与参数，建立荷载与多重环境因素耦合作用下再生混凝土结构的碳化模型等。 关键词： 再生混凝土；碳化；模型；进展 中图分类号： TU528.01 文献标志码： A 文章编号： 1002-3550 （2014）01-0041-05 FENG Jincai ，GAO Yanrong ，XIA Qun ，LI Haoran ，TIAN Bin （Department of Civil Engineering Changzhou University，Changzhou 213164，China） Ab stract:Achievements of recycled concrete carbonation when recycled aggregate were used to make new concrete were summarized. Effects of recycled aggregate ，water-binder ratios ，cement content ，curing condition and load levels on the carbonation behavior of recycled concrete were evaluated by accelerated carbonation experiments.One of measures to enhance recycled concrete carbonation resistance by improving recycled concrete aggregates quality was pointed out.Then ，state carbonation models were analyzed comparatively on the basic of carbide mechanism analysis ，it was conducted that the combination of theory and experience of carbonation model has both the theoreti- cal basis and convenient for engineering application.Finally，main key problems of recycled concrete carbonation research are proposed ，in- cluding all of loads of recycled concrete carbonation mechanism，set up under the action of multiple factors of carbonation model and so on