硅酸盐通报2017，Vol.36Issue(7)：2259-2262,2267,5.
活性MgO含量对碱式硫酸镁水泥强度及水化产物的影响
Influence of Reactive Magnesium Oxide Content on Strength and Hydration Products of Basic Magnesium Sulfate Cement
李振国 1余四文 1刘同海 2刘博 1王博 1郑淇水1
作者信息
- 1. 哈尔滨理工大学建筑工程学院,哈尔滨 150080
- 2. 哈尔滨理工大学基建办,哈尔滨 150080
- 折叠
摘要
Abstract
In order to study the influence of reactive magnesium oxide(MgO)content on strength and hydration products of basic magnesium sulfate cement(BMSC),the flexural and compressive strength of BMSC mixed with different content of reactive MgO were tested.And hydration products were analyzed by X-ray diffraction method.The results show that the compressive strength of specimens with 60％reactive MgO is highest than the specimens with reactive MgO content of 43.2％and 70％at curing age of 28 d when the modifier addition amount of 1％by weight of reactive MgO.And large amounts of 5·1·7 phase whiskers were formed in hydration products of specimens with 60％reactive MgO.Higher content of reactive MgO of 70％is more liable to the formation of Mg(OH)2 in hydration reaction for less content of modifier additive.So the strength is lower than the specimens with 60％reactive MgO by 60％.The hydration products in the paste mixed with lower content of reactive MgO of 43.2％are less 5·1·7 phase,more Mg(OH)2,residual MgCO3 and MgO.Increasing the modifier addition amount to 2％by weight of reactive MgO,the compressive strength of the phase mixed with reactive MgO content of 70％was improved greatly at each curing age.关键词
轻烧氧化镁/活性含量/碱式硫酸镁水泥/强度/水化产物Key words
light-burnt magnesium oxide/reactive oxide content/basic magnesium sulfate cement/strength/hydration product分类
化学化工引用本文复制引用
李振国,余四文,刘同海,刘博,王博,郑淇水..活性MgO含量对碱式硫酸镁水泥强度及水化产物的影响[J].硅酸盐通报,2017,36(7):2259-2262,2267,5.
