硅酸盐通报2018，Vol.37Issue(4)：1231-1234,1254,5.
菱镁矿尾渣煅烧MgO膨胀剂在一维限制砂浆中的膨胀性能
Expansion Characteristics of MgO-based Expansive Agents Produced by Magnesite Tailings in Restrained Mortars
储玉婷 1魏亦军 1潘路 1张连凤 1吴凯翔1
作者信息
- 1. 淮南师范学院化学与材料工程学院,低温共烧材料安徽省重点实验室,淮南 232038
- 折叠
摘要
Abstract
In order to explore the probability of the application of MgO-based expansive agents(MEA) produced by magnesite tailings,the activity of MEA and the one-dimension limited expansion of mortars mixed with MEA cured in water at different temperatures has been separately investigated.The results show that different activity MEA can be produced by magnesite tailings calcined at high temperature,and the higher the calcination temperature, the lower the activity.Different expansion characteristics is presented at different temperature water.Correspondingly, the increase of curing temperature exerts a significant impact on the mortars with lower activity MEA.Comparing with the MEA calcined by magnesite,the active components in the MEA calcined by magnesite tailing is relatively lower, as a result,the mortars with the same dosage of MEA perform a poor expansion characteristic.Therefore, in the practical application,the advisable dosage of MEA calcined by magnesite tailing should be properly raised,in order to effectively compensate the shrinkage of concrete.关键词
菱镁矿尾渣/MgO膨胀剂/限制膨胀率/活性/膨胀特性Key words
magnesite tailing/MgO-based expansive agent/restrained expansion/activity/expansion characteristic分类
建筑与水利引用本文复制引用
储玉婷,魏亦军,潘路,张连凤,吴凯翔..菱镁矿尾渣煅烧MgO膨胀剂在一维限制砂浆中的膨胀性能[J].硅酸盐通报,2018,37(4):1231-1234,1254,5.
