Mechanical, Thermal, and Fire Properties of Composite Materials Based on Gypsum and PCM

Abstract

One of the solutions for overheating the interior in the summer without increasing energy consumption is the integration of phase change material (PCM) into interior plasters. However, adding PCM to plasters deteriorates their properties and thus their usability. The aim of this paper is to determine how the microencapsulated PCM affects the mechanical, thermal, and fire properties of plasters and how much PCM can be added to the plaster. Two sets of samples were prepared: in set S, part of the aggregate was replaced by PCM; and in set R, only PCM was added. The bulk density, flexural strength, compressive strength, tensile strength perpendicular to the surface, thermal conductivity coefficient, specific heat capacity, melting, and solidification temperatures and enthalpy were measured. A single-flame source fire test and a gross heat of combustion fire test were performed to determine the reaction to the fire class. The results show that with an increasing proportion of PCM, the strength of the samples of set R decreased more significantly than it did with the samples of set S. It was found that only up to about 10% PCM could be added to set R, while up to 30% PCM could be added to set S.

Special Issue: “The Design and Optimization of Fire Protection Processes”

“…Research in the field regarding this has rarely conducted through real experiments [43][44][45]. Most research has took the form of experiments to monitor "reaction-on-fire" parameters [46,47]. Contribution 4 is dedicated to this area of research, and in this paper, attention is drawn to the creation of software models, as in the work of other authors [48][49][50].…”

Effect of Air Velocity and Initial Conditioning on the Moisture Buffer Value of Four Different Building Materials

“…These results are in agreement with values from literature. For gypsum materials, the real density was between 2300 and 2600 kg/m 3 , depending on its hydration [47,48] the apparent density ranges between 940 and 1300 kg/m 3 [49][50][51][52], and the open porosity ranges from 36% to 68%, depending on water/gypsum mass ratio and on hydration [52][53][54]. For cellular concretes, the apparent density ranges from 300 to 600 kg/m 3 , the real density ranges around 2500 and 2600 kg/m 3 , the total and open porosities are close and are about 69%-87% [28][29][30]55,56].…”

Enhancing Photovoltaic Thermal System Efficiency Using Micro-Channel Container and Nanoparticle Composited Phase Change Material: Effect of Dimensionless Water Flow

“…By incorporating a metal characterized by high thermal conductivity into a PCM, it is possible to augment heat dissipation capacities. Despite increasing the cooling effect and heat transfer properties, the incorporation of thermal additives into a system, results in a reduction in the latent heat of fusion and an increase in the total weight [7,8]. In addition, a number of intriguing studies have been conducted to enhance the reduction in temperature of PV modules.…”