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Basic properties of underwater polymer mortars using waste expanded polystyrene-methyl methacrylate-based binders



Title: Basic properties of underwater polymer mortars using waste expanded polystyrene-methyl methacrylate-based binders
Author(s): A. Moroka
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: 203 - 210
Total Pages: 8
Nb references: 5
Language: English


Abstract: The purpose of this investigation is to develop underwater polymer mortars using a methyl methacrylate (MMA) solution of expanded polystyrene (EPS) as an effective recycling method for waste expanded polystyrene. An EPS solution is prepared by dissolving a preformed cellular polystyrene thermal insulating material as a model of waste expanded polystyrene in MMA. Underwater and air-placed polymer mortars using EPS-MMA-based binders with N, N-dimethyl aniline or N, N-dimethyl-p-toluidine as a promoter, ground calcium carbonate as a filler and silica sands as fine aggregates are prepared with various initiator contents and promoter contents, and tested for working life and strength properties. As a result, the working lives of the underwater and air-placed binders and polymer mortars are shortened with increasing initiator content and promoter content. The working lives of the underwater binders and polymer mortars are longer than those of the air-placed binders and polymer mortars. Their flexural and compressive strengths are increased with increasing initiator content and promoter content. The flexural and compressive strengths of the underwater polymer mortars are about 48 to 93% of those of the air-placed polymer mortars.


Online publication: 2004-11-24
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143640.024