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Effects of molding conditions on basic properties of rice husks-waste expanded polystyrene composites by hot press molding method



Title: Effects of molding conditions on basic properties of rice husks-waste expanded polystyrene composites by hot press molding method
Author(s): Y. Ohama
Paper category : conference
Book title: RILEM International Symposium on Environment-Conscious Materials and Systems for Sustainable Development
Editor(s): N. Kashino and Y. Ohama
Print-ISBN: 2-912143-55-1
e-ISBN: 2912143640
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 377 - 384
Total Pages: 8
Nb references: 8
Language: English


Abstract: The annual discharges of waste expanded polystyrene (waste EPS) and rice husks in Japan have exceeded about 176,000t and 2,500,000t, respectively, and the effective recycling countermeasures against large quantities of both wastes are strongly requested. The purpose of this study is to develop the building materials which are produced by combining the waste EPS and rice husks as an effective recycling method for such wastes. A styrene solution of waste EPS with a crosslinking agent is used as a binder for rice husks-waste EPS composites. The composites are prepared under different molding conditions, and tested for apparent density, water absorption, expansion in thickness, flexural strength and wet flexural strength. From the test results, their apparent density, flexural strength and wet flexural strength increase with increasing molding pressure, and their water absorption and expansion in thickness tend to decrease with an increase in the molding pressure. Since the composites have a high flexural strength, excellent water resistance and dimensional stability, their uses as building materials are expected.


Online publication: 2004-11-24
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143640.045