掺氧化镁混凝土的安定性试验方法与判定准则
发布时间：2019-01-30 19:22
【摘要】：氧化镁水化时具有体积膨胀和水化速度较水泥矿物慢的特点,内掺或外掺氧化镁一直是解决混凝土后期收缩开裂问题的研究方向,但其延滞性膨胀可能影响混凝土体积的安定性。目前,掺氧化镁混凝土的安定性判定方法和判定准则决定了氧化镁的使用效果和安全性,基于氧化镁压蒸安定性试验,从安定性判定的目的出发,分析探讨了现有多种试验方法和判定准则的合理性,并指出后续研究的侧重点。
[Abstract]:Magnesium oxide hydration has the characteristics of volume expansion and slower hydration rate than cement mineral. It is always the research direction to solve the problem of shrinkage cracking of concrete with or without magnesium oxide. But its hysteretic expansion may affect the stability of concrete volume. At present, the determination method and criterion of the stability of concrete doped with magnesium oxide determine the effect and safety of the use of magnesium oxide. Based on the pressure steaming stability test of magnesium oxide, starting from the purpose of judging the stability, The reasonableness of various existing test methods and criteria is discussed, and the emphasis of further research is pointed out.
【作者单位】： 长江科学院科技成果推广中心;
【分类号】：TV431
[Abstract]:Magnesium oxide hydration has the characteristics of volume expansion and slower hydration rate than cement mineral. It is always the research direction to solve the problem of shrinkage cracking of concrete with or without magnesium oxide. But its hysteretic expansion may affect the stability of concrete volume. At present, the determination method and criterion of the stability of concrete doped with magnesium oxide determine the effect and safety of the use of magnesium oxide. Based on the pressure steaming stability test of magnesium oxide, starting from the purpose of judging the stability, The reasonableness of various existing test methods and criteria is discussed, and the emphasis of further research is pointed out.
【作者单位】： 长江科学院科技成果推广中心;
【分类号】：TV431
【参考文献】
相关期刊论文 前8条
1 陈昌礼;;水工混凝土中氧化镁安定掺量的判定方法述评[J];水利水电技术;2015年09期
2 侯新凯;徐德龙;薛博;李虎森;;钢渣引起水泥体积安定性问题的探讨[J];建筑材料学报;2012年05期
3 姚传山;;浅谈影响水泥安定性判定的因素[J];安徽建筑;2008年06期
4 冉t，
本文编号：2418424
本文链接：https://www.wllwen.com/kejilunwen/shuiwenshuili/2418424.html
