摘要
本文使用了酚酞指示剂法、化学滴定法及模拟孔溶液法,研究了掺ZY膨胀剂水泥石加速碳化性能。试验结果表明:掺8%ZY膨胀剂水泥石抗碳化性能差于基准组水泥石,酚酞指示剂法仅适用于表征完全碳化的水泥石,其测试的碳化深度低于化学滴定法及模拟孔溶液法所确定的水泥石碳化深度;掺ZY膨胀剂使模拟孔溶液中Ca^(2+)浓度略有升高,但碳化使得各组水泥石模拟孔溶液中Ca^(2+)浓度降低。
In this paper, the phenolphthalein indicator method, chemical titration method and simulated solution method were applied to investigate the carbonation properties of ZY expansive agent-added cement paste. The results showed that the addition of 8~ ZY expansive agent decrease the carbonation properties of hardened cement pastes, the phenolphthalein indicator method was only suitable for the complete carbonated area, the carbonation depth acquired from chemical titration method and simulated solution method were higher than that obtained from phenolphthalein indicator method. The Ca^2＋ concentration of ZY expansive agent-added cement paste was increased, however, the carbonation process decreased the Ca^2＋ concentration simulated pore solution.
基金
黑龙江省科研机构创新能力提升专项计划(YC2015D004)
关键词
ZY膨胀剂
水泥石
碳化性能
化学滴定
模拟孔溶液
ZY expansive agent
cement paste
carbonation
chemical titration
simulated solution
