交通运输研究2016，Vol.2Issue(6)：60-66,7.DOI:10.16503/j.cnki.2095-9931.2016.06.010
水泥混凝土成熟度积分计算方法适用性分析
Application Analysis of Maturity Integral Calculation Method for Cement Concrete
摘要
Abstract
The difference of setting time measured in laboratory with standard maintenance and con⁃struction site for cement concrete was significant. In order to improve guiding of time of setting for ce⁃ment concrete construction, the application of the maturity integral calculation method for cement con⁃crete was analyzed through the establishment of maturity calculation model based on integral method, and then the accuracy of predicting setting time for cement concrete with "maturity-penetration resis⁃tance"relation curve established on outdoor natural maintenance and indoor standard maintenance were compared. The results show that compared with vibrating type of temperature changes, the maturity inte⁃gral calculation method is more suitable for parabolic type of temperature changes;grey relational analy⁃sis of maturity-penetration resistance relationship shows that the integral method of maturity calculation has quite accuracy compared with the piecewise method;using standard test method for time of setting of concrete mixture by penetration resistance to determine the setting time is not reasonable, and applying the corresponding maturity to predict time of setting shows higher accuracy. Predicting time of setting with maturity conforms preferably to actual institute in cement concrete construction site, and maturity is recommended as technical index of measuring time of setting for cement concrete.关键词
水泥混凝土/凝结时间/成熟度/贯入阻力/积分法/灰关联分析Key words
cement concrete/setting time/maturity/penetration resistance/integral method/grey re-lational analysis分类
交通工程引用本文复制引用
李俊,曹东伟,韩森..水泥混凝土成熟度积分计算方法适用性分析[J].交通运输研究,2016,2(6):60-66,7.基金项目
陕西省交通运输厅交通科研项目 （）
