摘要
研究了不同水灰比的普通混凝土、混合骨料混凝土和轻骨料混凝土在不同养护条件下的强度发展规律,同时还对混凝土内部相对湿度进行了测定。结果表明,室外自然养护条件下,普通混凝土28 d后强度几乎不再增长;标准养护条件下,掺加陶粒的低水灰比混凝土后期强度增长率较高;水中养护条件下,陶粒自养护作用对混凝土强度增长的贡献较低。
The strength development law of normal weight,combined aggregate and lightweight aggregate concretes as well as the internal relative humidity of concrete under different curing conditions were studied.The results show that,under outdoor natural curing condition,the strength of normal weight concrete has little increase after 28d.Under standard curing condition,the concrete with low water-cement ratio containing ceramsite has higher growth rate of long-term strength.Under water curing condition,the contribution of self-curing effect of ceramsite to the growth of the concrete strength is lower.
出处
《工业建筑》
CSCD
北大核心
2010年第11期32-35,42,共5页
Industrial Construction
基金
国家"863计划"资助项目(2008AA030704)
关键词
养护条件
强度
相对湿度
陶粒
水灰比
curing condition
strength
relative humidity
ceramsite
water-cement ratio
