基于灰预测模型的自密实混凝土收缩徐变研究

对自密实混凝土试件进行为期120d持续加载徐变试验，分别将其中一组试件进行密封处理，同期进行收缩对比试验，由此可测得自密实混凝土干燥徐变度、基本徐变度、干燥收缩和自生收缩发展曲线：在短期收缩徐变变形数据分析基础上采用基于灰色系统理论的预测模型对自密实混凝土收缩徐变发展进行预测；结果表明，模型预测结果与试验结果吻合较好，该方法可以运用于自密实混凝土收缩徐变变形预测，可以给自密实混凝土工程实践提供一定的参考和指导。

Research on Shrinkage and Creep of Self-compacting Concrete Based on Grey Model

This paper outlines the experimental studies on creep and shrinkage of young self-compacting concrete(SCC).The loaded specimens of SCC are all tested for 120d,and half of the specimens are sealed to measure the autogenous shrinkage and basic creep.Based on the 120d experimental results,the grey model is presented to predict the creep and shrinkage of SCC.The agreement between the prediction and the experimental data indicates that,the method proposed can be used to predict the long-time creep and shrinkage of SCC.