摘要
为了得到针对地下连续墙的碳化深度预测模型,对现场取制试件进行了快速碳化试验.试件取自建成已10年之久的上海地铁一号线,试验分别在CO2为20%,30%两种质量分数下进行.利用Matlab对试验数据进行回归得到了三种地下连续墙碳化深度预测模型:随时间以及CO2质量分数变化的预测模型;随混凝土抗压强度变化的预测模型;考虑碳化龄期和混凝土抗压强度变化的预测模型.分析表明,所得碳化深度预测模型有其可靠性和实用性.
To establish proper prediction model for diaphragm wall carbonation depth, accelerated carbonation experiment of the on-the-site samples was conducted. The samples were taken from the first Shanghai Subway built ten years ago, and the carbon dioxide density in the accelerated carbonation experiment was 20% and 30% respectively. Matlab software was adopted to regress the carbonation depth prediction models for diaphragm wall up to the carbonation time, carbon dioxide density, concrete strength incrcasement. Results show that the formulae are reliable and practicable.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第1期1-5,共5页
Journal of Tongji University:Natural Science
基金
同济大学岩土工程重点实验室资助项目
关键词
地下连续墙
快速碳化试验
碳化深度
混凝土抗压强度
diaphragm wall
accelerated carbonation experiment
carbonation depth
concrete strength
