Effects of High-Volume Ground Slag Powder on the Properties of High-Strength Concrete under Different Curing Conditions

被引:5
作者
Zhou, Yuqi [1 ,2 ]
Sun, Jianwei [2 ,3 ]
Zhang, Zengqi [4 ]
机构
[1] China Construct First Grp Construct & Dev Co Ltd, Beijing 100102, Peoples R China
[2] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
[3] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
GSP; high strength; hydration; strength; penetrability; BLAST-FURNACE SLAG; CALCIUM SILICATE HYDRATE; EARLY-AGE BEHAVIOR; FLY-ASH; MECHANICAL-PROPERTIES; RICE HUSK; PERFORMANCE; RESISTANCE; GGBS; MICROSTRUCTURE;
D O I
10.3390/cryst11040348
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Massive high-strength concrete structures tend to have a high risk of cracking. Ground slag powder (GSP), a sustainable and green industrial waste, is suitable for high-strength concrete. We carried out an experimental study of the effects of GSP with a specific surface area of 659 m(2)/kg on the hydration, pore structure, compressive strength and chloride ion penetrability resistance of high-strength concrete. Results show that adding 25% GSP increases the adiabatic temperature rise of high-strength concrete, whereas adding 45% GSP decreases the initial temperature rise. Incorporating GSP refines the pore structure to the greatest extent and improves the compressive strength and chloride ion penetrability resistance of high-strength concrete, which is more obvious under early temperature-matching curing conditions. Increasing curing temperature has a more obvious impact on the pozzolanic reaction of GSP than cement hydration. From a comprehensive perspective, GSP has potential applications in the cleaner production of green high-strength concrete.
引用
收藏
页数:16
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