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RISS 인기검색어
- 검색키워드
- 저자 : 전건영 ( Cheon Keon Young ) (검색결과 1 건)
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재생수지(再生樹脂)콘크리트의 역학적(力學的) 성질(性質)에 관한 연구(硏究)
전건영 ( Cheon Keon Young ),고재군 ( Koh Chae Koon ) 한국농공학회 1987 韓國農工學會誌 : 전원과 자원 Vol.29 No.4
The objective of the study was to obtain the compressive the tensile and the flexural strengthes, thermal resistance, chemical resistance and fire resistance of the reclaimed plastic concrete in order to investigate the feasibility as a new construction material This reclaimed plastic concrete is a compositive material which is composed of sand and blend of 50% of LDPE(Low density polyethylene) and 50% of HDPE (High density polyethylene) which are inexpensive and easy to reclaim. The results obtained in the study are summarized as follows : 1. As the binder content ranging from 20 to 40 % increase, the compresie, the splitting tensile and the flexural strengthes were increased. The compressive strenzth of the specimen tested was the highest and flexural strength the next and tensile strength the lowest 2. The compressive, the tensile and flexural strengthes of specimens made of fine sand were higher than those of coarse sand. The compressive, the tensile and the flexural strengthes of specimens made of high pressure molding were higher than those of low pressure molding. 3. In comparison with different additives, the specimens with carbon black was excellent and B. H. T. good and ferric oxide poor for thermal resistance. 4. In relationship between the flexural strength with varying temperature from -23℃ to 80℃. the flexural strengthes were decreared as temperature increased at 25%, 30% and 35% of binder contents, respectively. Especially at 60℃, the flexural strength was significantly decreased. 5. The decrement of flexural strengthes and the weight losses after 7 days immersion in acid or alkali solutions were not significant. 6. Fire resistance of the reclaimed plastic concrete was not significantly influenced by the contents of sand. However, the fire resistance of the reclaimed plastic concrete was depend upon melting and ignition properties of the binder itself. Therefore, a proper selection of the binder and the fire retardant are recommended in arder to improve fire resistance of the reclaimed plastic concrete.
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