文献类型：期刊文献

中文题名：等强度砂浆下低收缩胶凝材料的优化设计

英文题名：Optimal design of low shrinkage cementitious materials with equal mortar strength

作者：周宁[1];钱春香[1];何智海[2]

机构：[1]东南大学材料科学与工程学院;[2]绍兴文理学院土木工程学院

年份：2015

卷号：45

期号：2

起止页码：387

中文期刊名：东南大学学报：自然科学版

外文期刊名：Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition)

收录：CSTPCD、、北大核心2014、EI(收录号：20151700789973)、CSCD2015_2016、Scopus(收录号：2-s2.0-84928266462)、北大核心、CSCD

基金：东南大学和瑞士西卡公司合作资助项目

语种：中文

中文关键词：收缩;灰色理论;关联度;GM(1;N)模型

外文关键词：shrinkage; grey theory; correlation; GM（1; N） model

中文摘要：为了快速优化设计低收缩胶凝材料,根据不同的胶凝材料组合制备了强度相近的胶砂,基于灰色系统理论选择与胶砂收缩关联度较大的因素作为影响因素,建立了胶砂收缩GM(1,N)模型.结果表明:C-S-H与未水化颗粒的体积比、变形抵抗因子和砂浆强度与胶砂收缩的关联度较大,其关联度分别为0.759,-0.678和-0.631.以此建立的胶砂收缩GM(1,4)模型模拟精度较高,可靠性较好,其平均相对误差为8.96%,全部收缩模拟值的相对误差小于15%左右.该模型中的主要影响因素易获取,其试验方法简单实用,可操作性强,减少了繁琐的试验.

外文摘要：In order to quickly optimize the design of low shrinkage cementitious materials,the mortar which has the similar strength was prepared according to different cementitious materials. Based on the gray system theory,the mortar shrinkage GM（ 1,N） model which selected the factors associated greatly with mortar shrinkage was established. The results show that the volume ratio betw een C-S-H and unhydrated particle,the deformation resistance factor and the mortar strength have greater correlation with mortar shrinkage,and the correlation factors are 0. 759,- 0. 678 and- 0. 631,respectively. The mortar shrinkage GM（ 1,4） model has high simulation accuracy and good reliability. The average relative error is 8. 96% and the overall relative error is less than about 15%. The main influence factors of the model are obtained easily and the test method is simple and workable with less tedious trial.