材料科学与工程学报2017，Vol.35Issue(4)：626-630,666,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.04.022
水泥中MgO膨胀剂水化产生的膨胀应力表征
Expansive Stress Generated by Hydration of Mgo Expansive Agents in Cement
刘猛 1邓敏 1莫立武2
作者信息
- 1. 国家“江苏先进生物与化学制造协同创新中心”,江苏南京210009
- 2. 材料化学工程国家重点实验室,南京工业大学材料科学与工程学院,江苏南京210009
- 折叠
摘要
Abstract
An experimental device was designed to measure the expansive stress of compacted MEA and that of cement pastes containing MEA under restraint condition.The content of periclase was analyzed by Xray diffraction and the hydration degree of periclase was calculated.Results indicated that the expansive stress of the compacted MEA-23 and MEA-46 hydrated for 22d were 38.9MPa and 62.7MPa,respectively.The expansive stresses of cement pastes containing MEA increased with the increasing content of MEA,the activity index of MEA and the hydration degree of periclase.The shrinkage stress of cement pastes without MEA cured for 63d was 1.3MPa,the expansive stress of cement pastes containing 12％ MEA-23 and MEA-46 cured for 63d were 1.8MPa and 3.0MPa,respectively.关键词
MgO膨胀剂/膨胀应力/水化程度/约束条件Key words
MgO expansive agent/expansive stress/hydration degree/restraint condition分类
建筑与水利引用本文复制引用
刘猛,邓敏,莫立武..水泥中MgO膨胀剂水化产生的膨胀应力表征[J].材料科学与工程学报,2017,35(4):626-630,666,6.
