• 한국식품영양과학회지
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• 제29권1호
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• pp.76-79
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• 2000

The effects of packaging conditions on freshness extension of squash (Cucurbita moscata) were investigated during 7-day storage at 2$0^{\circ}C$. Weight loss of squash packed with corrugated paperboard box (control) was 5.5%, and those of LDPE (low density polyethylene, Ф0.02 mm), LDPE (Ф0.04mm) film and EPS (expanded polystyrene) box were 0.9%, 0.8%, and 1.1%, respectively. Firmness of EPS was 11% higher than that of control, chlorophill content of squash packed with EPS box was 18.9% higher, and total ascorbic acid content of squash packed with EPS box was 29.4% higher than that of control. Quality of packed squash was not different between EPS packages and LDPE packages. Decay of control was 1~2 pieces per box, but was not found in the LDPE, EPS box. Preferences in overall appearences of LDPE, EPS box was better than those of control.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2003년도 봄 학술발표회 논문집
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• pp.401-408
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• 2003

EPS(Expanded Polystyrene) has been used in a variety of applications as a solution of difficult soil conditions encountered in construction activities. Although there has been significant worldwide growth in the use of EPS as a lightweight fill material, it has a few failure cases before and after the construction. This paper described the observed failures of EPS structures up In date around the world. Also, method of quality control was proposed for site monitoring.

• 콘크리트학회논문집
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• 제16권1호
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• pp.54-60
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• 2004

발포폴리스티렌(EPS)의 효율적인 재활용 기술개발의 일환으로서 폐 발포폴리스티렌을 중합성 모노머인 스티렌에 용해한 고분자 용액에 가교제, 개시제, 촉진제 등을 첨가하여 상온 중합성 결합재를 개발하였으며 이를 이용한 폴리스티렌 모르타르를 제조하여 그 중요한 경화특성인 사용가능시간, 건조양생재령에 따른 발열온도 및 길이변화 거동에 미치는 폐 발포폴리스티렌 용액농도 및 TMPTMA 첨가량의 영향에 대해서 검토하였다. EPS용액을 이용한 결합재 및 폴리스티렌 모르타르의 사용가능시간은 EPS용액 농도 및 TMPTMA 첨가율의 증가에 따라서 짧아지며, 또한 폴리스티렌 모르타르의 경화에 따른 길이변화는 EPS용액 농도 및 TMPTMA 첨가율에 크게 영향을 받는데 이를 적절히 조절하여 경화특성을 제어함으로써 저수축 혹은 무수축 폴리스티렌 모르타르의 제조가 가능하다는 것을 검증하고 있다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.793-798
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• 2003

The purpose of this study is to investigate the setting properties of polystyrene mortars using waste expanded polystyrene(EPS) solution-based binders. The binders for polystyrene mortars are made by mixing crosslinking agent with waste EPS solutions which prepared by dissolving EPS in styrene. Polystyrene mortars are prepared with various EPS concentrations of EPS solutions and crosslinking agent contents, subjected to a dry curing, and tested for working life, peak exotherm temperature and 10h-length change. From the test results, the working lives of polystyrene mortars are shortened with raising EPS concentration of EPS solution and crosslinking agent content. Low-shrinkage or non-shrinkage of polystyrene mortars should be accomplished by adjusting EPS concentration of EPS solution and crosslinking agent content.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1999년도 봄 학술발표회 논문집(I)
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• pp.343-348
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• 1999

The purpose of this study is to evaluated the effects of added expanded polystyrene on the basic properties of UP mortar. Polyester resin mortars are prepared with expanded polystyrene ratio in styrene monomer (EPS/PS), and the ratio of total polystyrene resin to UP resin (PS/UP). And it is tested for viscosity of UP resin added PS resin, slump-flow test, working life, flexural and compressive strengths, and curing shrinkage test. From the test result, Viscosity of resin for polymer mortar increases with increasing PS content. Curing shrinkage of UP mortar is considerably smaller than that of plain UP mortar, nevertheless, reduction in the strengths is not recognized according to adding PS resin. In this study, we can obtain the optimum mix proportions of polymer mortar using PS resin.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1994년도 발포 폴리스티렌 EPS 이용 성토공법 국제심포지엄 논문집
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• pp.53-80
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• 1994

• 한국농공학회지
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• 제31권1호
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• pp.9-12
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• 1989

• 한국정밀공학회지
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• 제17권12호
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• pp.88-93
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• 2000

The reduction of the cushion material such as Expanded Polystyrene (EPS) is one of the urgent tasks of the package design process in home electrical appliances considering environmental protection. EPS reduction often causes the structural damage of products, which must be protected in the environment of transportation. CAE simulation can help the efficient package design with low material cost. The mechanical drop simulation of packaged product was performed with commercial FEM code and Taguchi approach was used partially to determine the dominant design parameters. As results of this study, about 20% reduction of EPS was accomplished in the monitor package design.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 춘계학술대회논문집
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• pp.177-182
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• 2004

Electronic products are subjected to many different types of shock environment. As the Optical Disc Drive (ODD) market grows, the number of failures related to shock increases. Therefore, it is necessary to improve the performance of cushion package as well as the product design. Cushion materials such as expanded polystyrene are often used to protect electronic products from shock environment. In this paper, the drop analysis of the cushion package f3r optical disc drives was carried out with the explicit method of LS-DYNA and verified by the drop test. For the optimization of package, response surface approximation model was created using central composite design. As a result, cushioning performance was improved under the critical condition and practical design guidelines of cushion package were suggested.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.21-22
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• 2018

Foamed concrete is a porous concrete that is cured by mixing bubbles into cement slurry. It is lighter than ordinary concrete and is characterized by higher insulation. Lightweight foamed concerte is mainly used as a sandwich panel in Korea, and is also used as a refractory filler in fireproof safes. Studies on lightwight foamed concrete have been carried out on strength,density and thermal conductivity. However, it is confirmed that the research on the fire resistance performance is very limited. Based on this study, fire resistance of lightweight foamed concrete using expanded polystyrene beads is investigated.