摘要
研究了水胶比、粉煤灰掺量、砂率和陶粒预湿时间对高强轻集料混凝土力学性能的影响。结果表明:水胶比与强度之间呈反比关系,强度的增长存在一上限,接近上限时,提高陶粒自身强度是提高混凝土强度最有效的方法;而对于粉煤灰掺量和砂率,存在一个最优的砂率和粉煤灰掺量;陶粒预湿时间对强度影响较大,强度与预湿时间呈正比关系,预湿时间超过1 h后强度增长不大。
This paper presented the influence of water：cement （W：C） ratio, fly ash, sand ratio, the prewetting time of lightweight aggregate on the mechanical properties of high strength lightweight concrete. The results showed that the decrease of the W： C ratio increased the compressive strength of high strength lightweight concrete, and there was an critical limit of W/ C for the increase of the concrete strength. After passing that limit, improving the quality of lightweight aggregate was the economic way to make the strength improved. There was an optimal content for sand and fly ash. The pre-wetting time of lightweight aggregate had an obvious influence on the compressive strength before the prewetting time was not more then 1 h.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2007年第9期104-107,共4页
Journal of Wuhan University of Technology
基金
内蒙古交通科技项目(NM20051128)
关键词
轻集料混凝土
水胶比
粉煤灰
抗压强度
lightweight concrete
water cement ratio
fly ash
compressive strength
作者简介
王树和（1966-）,男,博士生,高级工程师.E-mail：wsh6309@163.com
