摘要
为了研究混凝土早期负温行为,本研究对普通混凝土试件、含2%LJ115液体防冻剂混凝土试件和含5%BH-D48防冻剂的混凝土试件做早期受冻试验,测定不同负温养护条件下混凝土的抗压强度。分析三种试件的抗冻临界强度及达到抗冻临界强度的时间。结果表明含2%LJ115液体防冻剂混凝土在预养7.48小时,抗冻临界强度为零时,就具有了抗冻性。
In order to study the early age behavior at minus temperature of concrete,the research for ordinary concrete specimens,including 2% LJ115 liquid anti-freezing mixture specimens,takes early age frost experiment on them,measures compression strength of the specimens that were at different negative temperature curing condition.The three kinds of spceimen of the critical strength in frost resistance and the strength time reach are analyzeel.The result indicates that the concrete included 2% LJ115 liquid anti-freezing mixture has the frost resistance,at the condition of they precured 7.48 hours and the critical strength in frost resistance was zero.
出处
《混凝土》
CAS
CSCD
北大核心
2005年第6期87-89,92,共4页
Concrete
关键词
混凝土
早期受冻
防冻剂
<Keyword>concrete
early age frost
anti-freezing mixture
