蒸养高强混凝土的碳化性能及其预测模型田耀刚.pdf

31　20 武　汉　理　工　大　学　学　报 Vol.31　No.20 2009 10 JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY 　Oct.2009 DOI:10.3963/j.issn.1671-4431.2009.20.010 1 2 3 3 田耀刚 ,彭　波 , 丁庆军 ,胡曙光 (1. , 710064;2., 430015; 3., 430070) 　:　通过快速碳化试验, 研究了蒸养高强混凝土的碳化性能, 在此基础上建立并验证了高强混凝土碳化性能预 数学模型。研究结果表明:蒸养高强混凝土的抗碳化性能随静养时间延长而提高;升温速度在 10～20 ℃/h 之间变化对 混凝土的抗碳化性能影响不大, 超过20 ℃/h 时, 其抗碳化性能有较明显的劣化;延长恒温时间或提高恒温温度, 混凝土 的抗碳化性能明显降低;建立的蒸养高强混凝土碳化性能预 数学模型具有较高的可信度。 :　蒸养;　高强混凝土;　碳化性能;　预 模型 :　TU 528.31 :　A :1671-4431(2009)20-0034-05 Carbonation of Steam-cured Hi h Stren th Concrete and the Prediction Model of Carbonation Depth 1 2 3 3 TIAN Y ao -gang ,PEN G B o ,DIN G Qing -j un ,H U S hu -g uang (1.College of aterials Science and Engineering, Changan University, Xian 710064, China;2.China Wuhan Ready-mixed Concrete anagement Station, Wuhan 430015, China;3.School of aterials Science and Engineering,Wuhan University of Technology, Wuhan 430070, China) Abstract:　According to accelerated carbonation test of concrete, the carbonation of steam-cured high strength concrete was studied.Based on these, thepredicion model of carbonation depth for steam-cured high strength concretewasproposed and veri- fied.Results show that the resistanceof carbonation of team-cured high strength concreteis enhanced by prolonging the rest pe- riod;heating-up rate has littleinfluenceon the carbonation of team-cured high strength concretewhen it is between in 10～20 ℃/h, the resistanceof carbonation will reduceobviously when heating-up rate is above20 ℃/h;the resis