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최맹기 ( Maeng-ki Choi ),박희곤 ( Hee-gon Park ),박선길 ( Sun-gil Park ),이재삼 ( Jae-sam Lee ),이영도 ( Young-do Lee ),정상진 ( Sang-jin Jung ) 한국건축시공학회 2006 한국건축시공학회 학술발표대회 논문집 Vol.6 No.1
As the importance of recycled materials is being emphasized more in the Korean construction market, the production quality has been improved to a significantly high level. Compared to the high quality, however, there are used very limitedly. Among recycled construction materials, recycled aggregates produced through the retreatment of waste concrete are drawing attention because of lack of natural aggregate and heightened consciousness of resource saving and environmental protection and, as a consequence, they are close to natural aggregates in terms of production technology and quality. Despite the high quality and productivity, however, the utilization of recycled aggregates is very low.
비소성시멘트를 사용한 모르터의 물리적 특성에 관한 기초적연구
김한식 ( Han-sic Kim ),최맹기 ( Maeng-ki Choi ),한다희 ( Da-hee Han ),박희곤 ( Hee-gon Park ),백민수 ( Min-su Paik ),정상진 ( Sang-jin Jung ) 한국건축시공학회 2005 한국건축시공학회 학술발표대회 논문집 Vol.5 No.2
The world``s cement demand is anticipated to increase about 2.558% every year until the first half of the 21st century. To be closed the increase of cenment damand and simultaneously comply with the Kyoto Protocal, cement that gives dioxide(Co2) discharge should be urgently develop. If cement can be manufactured with industrial byproducts such as granulated blast furnace slag(GBFS), phosphogypsum(PG), and waste lime(WL) instead of clinker as its counterproposal, there would be many advantages including maximum use of these industrial byproducts for high value-added resources, conservation of natural resources and energy by omitting use of the clinker, minimized environmental pollution problems caused by Co2discharge and reduction of the cost. So this study aims to solve the problems by manufacturing non-sintered cement.
초기 고온이력이 시멘트 모르터의 강도발현에 미치는 영향에 관한 연구
김영주 ( Young-joo Kim ),최맹기 ( Maeng-ki Choi ),공민호 ( Min-ho Gong ),박희곤 ( Hee-gon Park ),김광기 ( Kwang-ki Kim ),정상진 ( Sang-jin Jung ) 한국건축시공학회 2005 한국건축시공학회 학술발표대회 논문집 Vol.5 No.1
This study is basic experiment for estimating influence of strength by curing temperature of concrete``s heat of hydration and estimate relationship of compressive strength development by initial curing temperature factor, and then asume temperature factor which influence compressive strength development and for showing basic document of quality control. According to the result of cement mortar by the curing temperature factor high-curing temperature shows high strength on 3 day compare with low curing-temperature, shows higher strength than the piece of high curing temperature.