Effect of PCM on the Hydration Process of Cement-Based Mixtures: A Novel Thermo-Mechanical Investigation
Pisello, Anna Laura
MetadataShow full item record
The use of Phase Change Material (PCM) for improving building indoor thermal comfort and energy saving has been largely investigated in the literature in recent years, thus confirming PCM's capability to reduce indoor thermal fluctuation in both summer and winter conditions, according to their melting temperature and operation boundaries. Further to that, the present paper aims at investigating an innovative use of PCM for absorbing heat released by cement during its curing process, which typically contributes to micro-cracking of massive concrete elements, therefore compromising their mechanical performance during their service life. The experiments carried out in this work showed how PCM, even in small quantities (i.e., up to 1% in weight of cement) plays a non-negligible benefit in reducing differential thermal increases between core and surface and therefore mechanical stresses originating from differential thermal expansion, as demonstrated by thermal monitoring of cement-based cubes. Both PCM types analyzed in the study (with melting temperatures at 18 and 25 ºC) were properly dispersed in the mix and were shown to be able to reduce the internal temperature of the cement paste by several degrees, i.e., around 5 ºC. Additionally, such small amount of PCM produced a reduction of the final density of the composite and an increase of the characteristic compressive strength with respect to the plain recipe.
Is part ofMaterials, 2018, vol. 11, núm. 6, p. 871 (17 pp)
European research projects
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as cc-by (c) Fabiani, Claudia et al., 2018
Showing items related by title, author, creator and subject.
Multifunctional smart concretes with novel phase change materials: Mechanical and thermo-energy investigation D'Alessandro, Antonella; Pisello, Anna Laura; Fabiani, Claudia; Ubertini, Filippo; Cabeza, Luisa F.; Cotana, Franco (Elsevier, 2018)Energy performance in buildings and integrated systems represents a key aspect influencing anthropogenic emissions worldwide. Therefore, novel multifunctional materials for improving envelope thermo-energy efficiency through ...
D'Alessandro, Antonella; Fabiani, Claudia; Pisello, Anna Laura; Ubertini, Filippo; Materazzi, Annibale Luigi; Cotana, Franco (Oxford University Press, 2017)The article reviews the recent research contributions and future promising perspectives regarding innovation in concrete technologies for low-carbon applications in buildings. To this aim, an original classification of ...
Pisello, Anna Laura; D'Alessandro, Antonella; Fabiani, Claudia; Fiorelli, Alessandro Pio; Ubertini, Filippo; Cabeza, Luisa F.; Materazzi, Annibale Luigi; Cotana, Franco (Elsevier, 2017)This work presents the first results of the thermo-physical and mechanical performance analysis of new lightweight structural concretes with high thermal capacity including capsulated PCMs in a variety of mix designs and ...