The optimization of a gypsum-based composite material

Arikan M., Sobolev K.

CEMENT AND CONCRETE RESEARCH, vol.32, no.11, pp.1725-1728, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 11
  • Publication Date: 2002
  • Doi Number: 10.1016/s0008-8846(02)00858-x
  • Journal Name: CEMENT AND CONCRETE RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1725-1728
  • Keywords: gypsum, composite, admixture, polymer, compressive strength
  • Middle East Technical University Affiliated: Yes

Abstract

Contemporary requirements for gypsurn-based composite materials (GBCM) for rendering or plastering include controlled setting time, good workability, sag resistance, high compressive and flexural strength, perfect bond to concrete or brick, water resistance, and improved heat and noise insulation. The application of a number of chemical admixtures and mineral additives was found to be necessary to provide the required performance for gypsum-based materials. Among the necessary chemical admixtures are the following: a retarding admixture, a water-soluble polymer (MC), an air-entraining admixture (AE), and a superplasticizer (SP). This paper describes the effect of the different admixtures on the consistency, setting time, and the compressive strength of GBCM. It also discusses the application of the stepwise optimization (SWO) method for the evaluation of the GBCM composition. (C) 2002 Published by Elsevier Science Ltd.