Dissolved recycled expanded polystyrene as partial replacement in plaster composites

Zaragoza-Benzal, Alicia; Morón, Carlos; Atanes-Sánchez, Evangelina; Saíz, Pablo

doi:10.1016/j.jobe.2022.105697

Cited by 12 publications

(10 citation statements)

References 34 publications

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“…Importantly, the decrease in mechanical properties is not uniform across the entire sheet: in regions with higher temperature, deformation occurs more prominently. 25 Objective Therefore, the objective of this article is to present a form-finding technique based on the deformation of plastic sheets by the action of gravity and the increase of temperature, which allows a structural exploration but, above all, enables a creative exploration of complex geometries. This technique can support form-giving processes within design and architecture projects, facilitating the understanding of the process, accelerating the form-finding process, 14 and providing clarity to control the inputs and outputs of the procedures.…”

Section: Deformation Of Plastic Sheetsmentioning

confidence: 99%

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A creative form-finding tool: Deformation of plastic sheets due to the influence of temperature and gravity

Patiño,

Maya,

Obregón

2024

International Journal of Architectural Computing

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A form-finding technique based on the deformation of plastic sheets by the action of gravity and temperature increase is proposed, allowing the exploration of complex geometries to support form-giving processes within architecture projects, both by students and practitioners. Using an analog and computational approach, the ideal material for the technique was selected from a multifactorial experiment. Semi-structured analog experimentation was carried out based on inputs, rules, and outputs previously identified, and the resulting models were morphologically analyzed, to later translate the components of the analog experimentation into a computational algorithm to carry out computational experimentation. The technique can be used as a generator of novel forms possessing adequate transformational qualities. Finally, potential applications of the technique and avenues for future research are presented.

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Section: Deformation Of Plastic Sheetsmentioning

confidence: 99%

“…Importantly, the decrease in mechanical properties is not uniform across the entire sheet: in regions with higher temperature, deformation occurs more prominently. 25…”

Section: Introductionmentioning

confidence: 99%

A creative form-finding tool: Deformation of plastic sheets due to the influence of temperature and gravity

Patiño,

Maya,

Obregón

2024

International Journal of Architectural Computing

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“…As these wastes have no water absorption capacity, some researchers have shown that the incorporation of these plastic wastes can have a positive impact on the durability of gypsum composites [25,32]. However, because of this lower final density of the hardened composites, thermal behaviour satisfactory results have also been obtained, for instance, EPS waste added to plaster materials, which reduces thermal conductivity by 61.9% compared to reference material [33].…”

Section: Figurementioning

confidence: 99%

“…The objective of this SEM technique was to understand the mixture behaviour of the HDPE and binder. To conduct these microscopies, a Jeol JSM-820 microscope operating at 20 kV was used; samples were previously coated with a thin layer of gold with a metalliser to ensure the conductivity of the electrons [33].…”

Section: Mechanical Characterization Testsmentioning

confidence: 99%

Initiative to Increase the Circularity of HDPE Waste in the Construction Industry: A Physico-Mechanical Characterization of New Sustainable Gypsum Products

Álvarez,

Ferrández,

Zaragoza-Benzal

et al. 2024

Applied Sciences

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The annual production of plastic waste worldwide has doubled in just two decades, with approximately 390 million tonnes of plastic waste now being generated. In this context, the construction industry must move towards the development of new, more sustainable materials made under circular economy criteria. In this work, a physico-mechanical characterisation of gypsum composites with the incorporation of high-density polyethylene (HDPE) waste, replacing 2–4–6–8–10% by volume of the original raw material, has been conducted. The results show how the incorporation of these plastic wastes improves the water resistance of the gypsum material without additions, as well as producing a decrease in thermal conductivity and greater resistance to impact. On the other hand, it has been found that, as the percentage of recycled raw material added increases, the mechanical resistance to bending and compression decreases, leading to fracture due to a lack of cohesion between the matrix and the waste. Nevertheless, in all the cases studied, mechanical strengths higher than those established by the EN 13279-2 standard were obtained. Thus, the results confirm the viability of these secondary raw materials to be used in the development of new products for sustainable building, especially in the design of prefabricated panels for false ceilings.

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“…Other researchers studied the possibility of incorporating waste materials into mortars as aggregates [6,17], considering that sand is the component that is present in the greatest quantities [7] in mortars Construction and demolitions waste (CDW) [11], ceramic [18,19], sanitary ware [6,20], glass fiber reinforced polymer [6,21], ornamental rocks [22], cork [18,23], and expanded polystyrene [24,25] have been incorporated into mortars as substitutes for sand, still achieving good technical performance in mortars.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Mortars with Fine Recycled Aggregates from Industrial Waste: Evaluation of Transports Impact in the Italian Context

2023

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An LCA study (based on ISO 14040, ISO 14044, and EN 15804 + A2 standards) was performed to evaluate the environmental impacts of two mortars incorporating recycled materials (composite and carbon dust) from industrial waste as fine aggregates. They were compared to “reference” mortars, with the same strength performance, entirely composed of raw natural materials. The aim was to advance knowledge on the performance of mortars with composite materials, especially deepening the impact of the phase of materials’ transport on life-cycle behavior. In this regard, the work was conducted in three phases. Firstly, the LCA was performed in a specific “local” production scenario. Then, a sensitivity analysis was carried out to assess the influence of the uncertainty of input data on the variance of LCA outcomes. Considering the high sensitivity of results to transport distances, the LCA was finally extended considering several scenarios with increasing distances of aggregates’ transport. The results demonstrate that, for all of the eleven impact categories considered, mortars with recycled aggregates perform better than reference mortars, mainly due to the higher weight of natural aggregates. Even considering an extreme scenario, where natural aggregates are produced in the mortar factory (aggregates’ transport distances set to 0 km, for reference mortars), mortars with recycled aggregates are still convenient from an environmental point of view, if distances for providing industrial waste are lower than 200 km. The promotion of a circular economy perspective, with the settlement of a network of local recycled materials’ providers and users can then generate important environmental benefits.

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Dissolved recycled expanded polystyrene as partial replacement in plaster composites

Cited by 12 publications

References 34 publications

A creative form-finding tool: Deformation of plastic sheets due to the influence of temperature and gravity

A creative form-finding tool: Deformation of plastic sheets due to the influence of temperature and gravity

Initiative to Increase the Circularity of HDPE Waste in the Construction Industry: A Physico-Mechanical Characterization of New Sustainable Gypsum Products

Life Cycle Assessment of Mortars with Fine Recycled Aggregates from Industrial Waste: Evaluation of Transports Impact in the Italian Context

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