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http://dx.doi.org/10.5389/KSAE.2013.55.2.059

Physical and Mechanical Properties of Non-Cement Porous Concrete with Alkali-Activator Contents  

Kim, Dong-Hyun (공주대학교 일반대학원 농공학과)
Kim, Chun-Soo ((주)자연과환경 생태환경공학연구소)
Park, Chan Gi (공주대학교 지역건설공학전공)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.55, no.2, 2013 , pp. 59-64 More about this Journal
Abstract
The present study is to evaluate physical and mechanical properties of porous concrete having non cement that mainly causes carbon emission. This study aims to explore eco-friendly concrete technology capable of reducing the amount of carbon emission due to the use of normal cement by substituting it with non cement porous concrete to which alkali-activator and blast-furnace slag powder are impregnated. As experimental variables, 5 %, 6 %, 7 %, 8 %, 9 % and 10 % of alkali-activator were substituted as binders and applied. Testing evaluated in this study were pH value, void ratio, compressive strength and residual compressive strength shown after being immersed in $H_2SO_4$ solution and $Na_2SO_4$ solution. The test results were compared with those tested with the use of porous concrete to which 400 $kg/m^3$ of unit cement amount was applied as binder. In consequence, it was concluded that; as for pH value, it was decreased than was the case in which cement was used, but increased with the more the use of alkali activator; as for void ratio and compressive strength, the mix proportion in which 9 % and 10 % of alkali activator were applied in terms of substitution ratio showed the result similar to the mixture in which 400 $kg/m^3$ of unit cement ratio was applied; and, as for residual compressive strength in the case of being immersed in $H_2SO_4$ solution and $Na_2SO_4$ solution, the compressive strength was increased, thus leading to improved chemical resistance.
Keywords
Alkali-activator; blast furnace slag; blast furnace slag; eco-friendly concrete; mechanical properties; non cement porous concrete;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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