摘要
讨论了在大体积砼中掺用膨胀剂与高效减水剂对抑制砼内部温升，防止砼表面裂缝的复合作用，分析了在大体积防水砼中掺用膨胀剂的条件。经试验表明，在砼中复合掺加膨胀剂和高效减水剂，可制得强度等级为C30，抗渗等级P＞25的大体积防水砼。
The compound effect of adding expansion agent and reduce-water agent in large volume concrete to control concrete temperature rising and to prevent concrete surface from cracking is discussed. The condition of adding expansion agent in large volume waterproof concrete is analyzed. Large volume waterproof concrete with C30 strength grade and seepage resistance P>25 can be mixed by adding expansion agent and reduce-water agent.
出处
《石家庄铁道大学学报（自然科学版）》
1998年第S1期67-70,共4页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
关键词
大体积砼
抗渗等级
膨胀剂
large volume concrete
seepage resistance grade
expansion agent
