Studies on the mechanical properties and thermal behavior of microencapsulated eutectic mixture in gypsum composite board for thermal regulation in the buildings

Srinivasaraonaik, B.; Singh, Latika; Sinha, Shishir; Tyagi, Inderjeet; Rawat, Anujay

doi:10.1016/j.jobe.2020.101400

Cited by 27 publications

(14 citation statements)

References 41 publications

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“…These tests indicate the technical feasibility of the plaster material developed to be used in the preparation of precasts, which, together with its lower density compared to traditional plaster panels, improves labor yields. In this way, the typology of prefabricated works elaborated in this study reduces costs and execution times [55]. As can be seen in Figure 9, the incorporation of reinforcing fibers in the plaster matrix has a positive effect on the mechanical behavior of the lightened plaster material, which is in agreement with the results obtained by other researchers [56].…”

Section: Ref D1 D2supporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

“…Another of the most important qualities of plaster materials is related to comfort and habitability [ 55 ]. In Figure 10 , the results obtained for the thermal conductivity values in the different dosages used are shown.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers

2021

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This paper shows the characterization of a new lightened gypsum-based material for use in buildings. A plaster material has been designed with a polymeric compound based on polyvinyl acetate, bicarbonate and a boric acid solution, which reduce the density and thermal conductivity by up to 20% and 30%, respectively. In addition, tests have been carried out with the lightened plaster material reinforced with glass (GF), basalt (BF), polypropylene (PPF) and wood (WF) fibers. A significant improvement in mechanical properties was achieved. All samples obtained resistance values greater than 2 MPa in flexion and 3 MPa in compression. Physico-chemical analysis were also carried out. The study is completed with a statistical analysis, where confidence intervals have been obtained for the mean at 95% confidence for each of the physical properties studied.

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Section: Ref D1 D2supporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers

2021

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“…The addition of 10% and 20% of the PCMs remarkably increased the thermal properties for energy storage, while decreased the mechanical properties within the permissible limits. Hamed Abbasi Hattan et al [88] studied the integration of polyethylene glycol (PEG) shape-stabilized in silica fume PCM in cement mortar for plastering building external brick walls. The experiment included thermal performance tests on outdoor temperature walls in two different cities.…”

Section: Mortars and Plastersmentioning

confidence: 99%

Towards Phase Change Materials for Thermal Energy Storage: Classification, Improvements and Applications in the Building Sector

2021

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The management of energy consumption in the building sector is of crucial concern for modern societies. Fossil fuels’ reduced availability, along with the environmental implications they cause, emphasize the necessity for the development of new technologies using renewable energy resources. Taking into account the growing resource shortages, as well as the ongoing deterioration of the environment, the building energy performance improvement using phase change materials (PCMs) is considered as a solution that could balance the energy supply together with the corresponding demand. Thermal energy storage systems with PCMs have been investigated for several building applications as they constitute a promising and sustainable method for reduction of fuel and electrical energy consumption, while maintaining a comfortable environment in the building envelope. These compounds can be incorporated into building construction materials and provide passive thermal sufficiency, or they can be used in heating, ventilation, and air conditioning systems, domestic hot water applications, etc. This study presents the principles of latent heat thermal energy storage systems with PCMs. Furthermore, the materials that can be used as PCMs, together with the most effective methods for improving their thermal performance, as well as various passive applications in the building sector, are also highlighted. Finally, special attention is given to the encapsulated PCMs that are composed of the core material, which is the PCM, and the shell material, which can be inorganic or organic, and their utilization inside constructional materials.

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“…The physical technique is spray dryer, 10 chemical routes are coacervation, 11 solgel, 12 interface polymerization, 3 granular polymerization, 7 and emulsion polymerization. 13 The core materials are generally fatty acids, paraffin, eutectic mixture, and salts, whereas shell materials are melamine-formaldehyde (MF) [14][15][16][17][18] polystyrene [19][20][21] polymethylmethacrylate (PMMA), 22 urea-formaldehyde resin (UF) 23 , 24 melamine-urea-formaldehyde (MUF), [25][26][27] and so on. Polymeric materials are toxic during fire.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of encapsulation of binary mixture by silica and its performance in pure cementitious system

2021

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Microencapsulation of binary mixture of 75% stearic acid (SA) + 25% capric acid (CA) (as core) has been amalgamated by silica (as shell) through sol-gel method. The obtained silica binary mixture (Si-BM) microcapsules was characterized in detail by sophisticated instruments such as field emission scanning electron microscope (FESEM), Fourier transformation infrared spectroscopy (FTIR), X-ray diffractometer (XRD), differential scanning calorimeter (DSC), and thermogravimetric (TG/DTA) were exploited to identify shape and mean size, functional groups, nature of crystallinity, and weight loss of Si-BM. The obtained microcapsules were regular in shape, crystalline state, mean size about 6.03 μm and the encapsulation efficiency of Si-BM found to be 71%. The dissimilar microcapsules such as Si-BM and melamine formaldehyde phase change material (MF-PCM) were assimilated (1, 3, and 5 wt%) into cement paste to elucidate thermal-mechanical properties. As the amount of Si-BM increases, the compressive strength increased by 10% and thermal conductivity of cement paste is increased by 9% as compared to MF-PCM. Novelty StatementEncapsulation of binary mixture is synthesized with silica through chemical method. The nonidentical different dosage of microcapsules such as MF-PCM and Si-BM were incorporated into pure cement system to determine its effect on mechanical and thermal properties of cementitious system. These data will be useful to further incorporation in mortar and concrete for energy storage as well as thermal load reduction on buildings.

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Studies on the mechanical properties and thermal behavior of microencapsulated eutectic mixture in gypsum composite board for thermal regulation in the buildings

Cited by 27 publications

References 41 publications

Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers

Characterization of a New Lightened Gypsum-Based Material Reinforced with Fibers

Towards Phase Change Materials for Thermal Energy Storage: Classification, Improvements and Applications in the Building Sector

Synthesis of encapsulation of binary mixture by silica and its performance in pure cementitious system

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