|
Title |
An Experimental Study on Developing Ultra-High Strength Powder Concrete Using Low-heat Portland Cement
|
|
Keywords |
초고강도 분체콘크리트 ; 저열 포틀랜드 시멘트 ; 초고강도콘크리트 ; 페로실리콘 ultra high strength powder concrete ; low-heat portland cement ; ultra high strength concrete ; ferro-silicon |
|
Abstract |
In order to develop the ultra high strength concrete over 400Mpa at 28 day, Low-heat portland cement, ferro-silicon, silica-fume and steel fiber were mixed and tested under the special autoclave curing conditions. Considering the influence of Ultra high strength concrete. normal concrete is used as a comparison with low water-cement ratio possible Low-heat portland cement. Additionally, as a substitution of aggregates, we analyzed the compressive strength of Ferro Silicon by making the states of mixed and curing conditions differently. In addition, SEM films testified the development of C-S-H hydrates of Type III & Type IV, and tobermolite, zonolite due to the high temperature, high pressure of autoclave curing. Fineness of aggregate, filler and reactive materials in concrete caused 420Mpa compressive strength at 28day successfully.
|