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Open AccessArticle

Study of Fresh and Hardening Process Properties of Gypsum with Three Different PCM Inclusion Methods

GREA Innovació Concurrent, Edifici CREA, University of Lleida, C/Pere de Cabrera S/N, Lleida 25001, Spain
Department of Materials Science & Metallurgical Engineering, University of Barcelona, Barcelona 08028, Spain
Grup Interdisciplinar de Ciència i Tecnologia en Edificació (GICITED), Departament Construccions arquitectòniques II, Universitat Politècnica de Catalunya, Barcelona 08034, Spain
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Materials 2015, 8(10), 6589-6596;
Received: 6 August 2015 / Revised: 10 September 2015 / Accepted: 15 September 2015 / Published: 24 September 2015
Gypsum has two important states (fresh and hardened states), and the addition of phase change materials (PCM) can vary the properties of the material. Many authors have extensively studied properties in the hardened state; however, the variation of fresh state properties due to the addition of Micronal® DS 5001 X PCM into gypsum has been the object of few investigations. Properties in fresh state define the workability, setting time, adherence and shrinkage, and, therefore the possibility of implementing the material in building walls. The aim of the study is to analyze, compare and evaluate the variability of fresh state properties after the inclusion of 10% PCM. PCM are added into a common gypsum matrix by three different methods: adding microencapsulated PCM, making a suspension of PCM/water, and incorporating PCM through a vacuum impregnation method. Results demonstrate that the inclusion of PCM change completely the water required by the gypsum to achieve good workability, especially the formulation containing Micronal® DS 5001 X: the water required is higher, the retraction is lower (50% less) due to the organic nature of the PCM with high elasticity and, the adherence is reduced (up to 45%) due to the difference between the porosity of the different surfaces as well as the surface tension difference. View Full-Text
Keywords: phase change material (PCM); gypsum; fresh state; coating; building phase change material (PCM); gypsum; fresh state; coating; building
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Serrano, S.; Barreneche, C.; Navarro, A.; Haurie, L.; Fernandez, A.I.; Cabeza, L.F. Study of Fresh and Hardening Process Properties of Gypsum with Three Different PCM Inclusion Methods. Materials 2015, 8, 6589-6596.

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