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Effect of composite polystyrene granular thermal insulation mortar on thermal energy storage of building energy consumption
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Researchers simulated the effect of adding polystyrene granules to building insulation mortar on thermal energy storage and overall building energy use. The composite mortar improved insulation performance, suggesting polystyrene waste materials could be repurposed in construction to reduce building energy consumption.
In order to save energy and reduce building energy consumption, the author pro?posed a study on the impact of composite polystyrene particle thermal insulation mortar on building energy consumption and thermal energy storage, take the ETIRS-C residence as the research object, through simulation calculation under different insulation mortar thickness, analyze the relationship between insulation thickness and energy consumption and thermal environment. According to the simulation calculation of room temperature, horizontally, the thickness of thermal insulation mortar in air conditioning season is not sensitive to the natural room temperature, there is a certain sensitivity to the natural room temperature in the heating season, in the longitudinal direction, the 30 mm thick insulation mortar is the jumping point, and the increase of the thickness of insulation mortar has no obvious effect on the natural room temperature. According to the simulation cal?culation of room energy consumption, the thickness of thermal insulation mortar is about 20 mm, and both heat and cold consumption have achieved good thermal insulation and energy saving effect, further increasing the thickness of thermal insulation mortar will have limited impact on energy consumption, which may be uneconomical and increase the cost and construction difficulty. Therefore, based on the aforementioned results, it can be considered that the thickness of thermal insulation mortar should preferably be controlled within 20-30 mm.
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Researchers tested adding recycled Styrofoam-like plastic beads (GPPS) into plaster used for building walls, hoping to reuse plastic waste while boosting insulation. The upgraded plaster did trap heat better, but it also got noticeably weaker and more crack-prone when exposed to fire-like temperatures, meaning this approach could improve energy efficiency but needs more work before it's safe for fire protection in homes.
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Researchers found a way to turn plastic waste into building material by mixing recycled plastic bits into concrete-like mortar, making it lighter and better at blocking heat and noise. This matters because it reuses plastic that would otherwise pile up in landfills, though the trade-off is a weaker, less sturdy material—so it's better suited for insulation than load-bearing walls. While this isn't a human health study, using waste plastic in solid, bonded building materials (rather than letting it break down into microplastics in nature) could be a smarter way to keep plastic out of our environment—and eventually, off our plates and out of our lungs.
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