摘要
以干缩及变形“落差”指标并结合抗渗性试验方法,评价自密实混凝土的抗渗性能,系统研究了膨胀剂用量、水胶比、引气剂及养护制度对C40自密实混凝土干缩和抗渗性的影响规律。试验结果表明,收缩及抗渗性能受到水胶比及体系的自密实能力的共同影响,引气剂可以有效减少收缩,提高抗渗性,膨胀剂最佳掺量为30kgm3。
It was investigated that the effect of expansive agent dosage,water-binder ratio（W/B）, air-entraining admixture and curing regime on the shrinkage and impermeability of C40 self-compacting concrete. The results showed that the airentraining admixture could greatly reduce shrinkage and enhance impermeability, the shrinkage and impermeability were affected by W/B and self-compacting competency, the optimum expanding admixture dosage was 30 kg/m^3 . As for the reliability of self-compacting concrete in engineering, the shrinkage and deformation fall acted for a supplement of standard permeability test to estimate the impermeability of self-compacting concrete.
出处
《工业建筑》
CSCD
北大核心
2005年第9期67-69,共3页
Industrial Construction
基金
国家自然科学基金重点资助项目(编号:59938170)。
