|
Title:
|
Study of Fresh and Hardening Process Properties of Gypsum with Three Different PCM Inclusion Methods
|
|
Author:
|
Serrano, Susana; Barreneche Güerisoli, Camila; Navarro Ezquerra, Antonia; Haurie, Laia; Fernández Renna, Ana Inés; Cabeza, Luisa F.
|
|
Notes:
|
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 Micronalr 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 Micronalr 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.
The work is partially funded by the Spanish government (ENE2011-28269-C03-02 and
MAT2011-26410). The authors would like to thank the Catalan Government for the quality accreditation given
to their research group GREA-UdL (2014 SGR 123) and research group DIOPMA-UB (2014 SGR 1543) and
GICITED-UPC (2014 SGR 1298).
In addition, the research leading to these results has received funding from the European Union’s Seventh
Framework Programme (FP7/2007-2013) under grant agreement n˝ PIRSES-GA-2013-610692 (INNOSTORAGE). |
|
Subject(s):
|
-Gypsum
-Fresh state
-Phase change material (PCM) |
|
Rights:
|
cc-by (c) Serrano, Susana et al., 2015
http://creativecommons.org/licenses/by/3.0/es/
|
|
Document type:
|
article
publishedVersion |
|
Published by:
|
MDPI
|
|
Share:
|
|
