摘要
采用较低的胶凝材料用量和含有特殊黏度改性剂的聚羧酸减水剂,配制普通强度等级的自密实混凝土(智能动力混凝土,简称SDC)。对智能动力混凝土、普通自密实混凝土以及普通强度等级的泵送混凝土进行了新拌性能、硬化后的力学性能和耐久性能的比较。试验结果表明,使用含有RheoMATRIX黏度改性剂的GLENIUM 6000 SDC外加剂,可以配制出胶凝材料用量不大于380 kg/m3的普通强度等级(C30)自密实混凝土;其新拌性能与采用高胶凝材料量配制出的普通自密实混凝土相当;力学性能和耐久性能均能达到要求,且优于普通泵送混凝土。
A self-compacting concrete of common strength grade, called Smart Dynamic Concrete （SDC）, was developed using a low content of cementitious materials and a special polycarboxylic superplasticizer with viscosity modifiers. The performance of flesh mixture, mechanical properties and durability of hardened concrete are compared among SDC, common self-compacting concrete and highly fluid concrete. The results show that it is possible to make self-compacting concrete of common strength grade （C30） whose total content of cementitious materials is below 380 kg/m^3 using GLENIUM 6000 SDC superplasticizer containing RheoMATRIX viscosity modifiers. The performance of fresh SDC mixture is close to common self-compacting concrete with high content ofcementitious materials. The mechanical properties and durability of hardened SDC are satisfied and even better than those of common highly fluid concrete.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第1期1-4,13,共5页
Concrete
