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Gypsum plastering: waste evaluation



Title: Gypsum plastering: waste evaluation
Author(s): L.L. Pimentel and G. Camarini
Paper category : conference
Book title: 2nd International RILEM Conference on Progress of Recycling in the Built Environment
Editor(s): V.M. John, E. Vazquez, S.C. Angulo, C. Ulsen
e-ISBN: 978-2-35158-122-3
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 71 - 81
Total Pages: 11
Nb references: 21
Language: English


Abstract: In civil construction, gypsum plaster has been used as decorative ornaments, plasterboards, dry-wall and renderings. The application procedure of plaster for rendering generates large amounts of waste due to its hydration kinetics, temperature and environmental humidity.
Waste production also occurs due to the technique of preparation and application of this material. The need to minimize gypsum waste production is to proposed ways for its reusing.
The aim of this work was to quantify the amount of gypsum waste produced by the process of using it as renderings. It was observed the influence of workers applying pastes rendering on gypsum waste production. It was also observed its physical and mechanical properties of commercial plaster. The application process of plaster renderings was followed measuring the generated waste and the time for finishing the process was also observed. It was examined: the application process and each step of plaster paste application was measured and recorded.

Results pointed out to waste production values in the range between 18% and 35%. The application technique and physical properties (setting times) influences the amount of waste production. Setting times also have a critical influence due to the kind of gypsum plaster used for renderings.


Online publication: 2012-02-08
Publication type : full_text
Public price (Euros): 0.00