摘要
研究了MgO掺量、粉煤灰掺量、水灰比和养护温度对外掺不同活性MgO的水泥浆体膨胀性能的影响。结果表明:净浆试件的膨胀率与MgO掺量有一定的线性关系;粉煤灰掺量为10%时较大的降低了净浆试件的膨胀率,但掺量继续提高,膨胀率下降幅度变小;水灰比降低引起了净浆试件膨胀率的下降;养护温度对掺低活性MgO的净浆试件膨胀率影响较大。
Effect of content of MgO, content of fly ash, water-cement ratio and curing temperature on the expansibility of cement paste doped with MgO of different activity was studied.Results showed that, expansion rate had a good linear relationship with content of MgO; expansion rate of cement paste decreased largely with addition of fly ash with content of 10%, while increasing.dosage of fly ash, expansion rate was decreasing but had less changed;expansion rate of cement paste decreased with water-cernent ratio reduced;curing temperature have great effect on expan- sion property of cement paste doped with MgO of low activity.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第1期72-74,共3页
Concrete
关键词
MGO
水泥浆体
膨胀率
magnesia
cement pastes
expansion rate
