The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
snyq-1 xing qing bian ya li ji zai shui ni guan zhu zhong de ying yong
Author(s): 
Pages: 52-53
Year: Issue:  1
Journal: Hydrogeology and Engineering Geology

Keyword:  水泥灌注压力机物理检验方法水灰比水泥浆技术条件结石强度水泥品种水泥标号胶砂比;
Abstract: <正> 提高水泥护孔堵漏的关键,除重视水泥品种的选择,采用合理的灌入工艺外,还取决于正确掌握候凝时间和恰到好处的透孔期。往往由于未能控制好合适的扫孔时间,急于透孔,致使孔内水泥浆固化强度偏低,达不到扫孔时间而导致失败;或由于候凝时间过长,其结石强度过高,扫出斜孔。均不能达到护孔堵漏应有的效果。另外,不同品种的水泥都有不同的物理检验方法和技术条件。如水泥标号,是反映水泥强度级别的重要标志,它是采用0.44~0.46水灰比、以1:2.5胶砂比成型、试块浸入恒温水中养护、经过试
Related Articles
No related articles found