Experimental Investigation of the Optimal Design of the Ultrahigh Early Strength Concrete

[摘要] Comparing with the common concrete, the ultrahigh early strength concrete can form in an extremely short time, which can be effectively applied in the field of the fast repair engineering. Based on this point, the design of the optimal mix proportion of ultrahigh early strength concrete was investigated in this study. First, the optimal water-cement ratio was determined through the experiment. Second, the relationship between water reducing agent and concrete strength was investigated, and then the optimal dosage of admixture was determined. The experimental results show that the prepared ultrahigh early strength concrete can obtain the high strength in the early time, which is beneficial for the practical application. Additionally, some other performances are acquired, such as the rapid condensation properties, the permeability resistance and workability etc.

[发布机构] School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin; 150090, China^1

[学科分类] 土木及结构工程学

[关键词] Concrete strength;Early strength;Experimental investigations;High strength;Optimal design;Optimal dosage;Water-cement ratio;Water-reducing agents