Comparative Analysis of Fibre-Reinforced Plasters for the Production of Precast Elements

Vega, Daniel Ferrández; Saíz, Pablo; Morón, Carlos; Atanes-Sánchez, Evangelina

doi:10.6036/9576

Cited by 6 publications

(4 citation statements)

References 11 publications

(11 reference statements)

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“…However, due to the limitations of the theory, technology, and industrialization, prefabricated buildings gradually faded out of sight in the middle and late 1980s. In recent years, with the emergence of labor shortages and the demand for low-carbon emissions, energy conservation, and environmental protection, prefabricated buildings have gradually become the focus of attention due to their energy conservation, emission reduction [1], and labor-intensive characteristics [2]. China has made great progress in the standardized design, component decomposition, and construction mechanization, which has also provided a solid foundation for the large-scale development of prefabricated buildings.…”

Section: Introductionmentioning

confidence: 99%

A Novel Risk Assessment Model for Prefabricated Building Construction Based on Combination Weight and Catastrophe Progression Method

2023

Teh. vjesn.

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To reduce the construction risk of prefabricated building projects, a prefabricated building construction risk assessment index system with five first-level indicators and 21 second-level indicators was established based on human, machine, material, management, and environmental factors. By combining the analytic hierarchy process (AHP), CRiteria Importance through Intercriteria Correlation (CRITIC), and catastrophe theory, a risk assessment model of prefabricated building construction based on a combination weighting and catastrophe progression method was constructed. The effectiveness of the assessment model using the combination weighting and catastrophe progression method was verified through case analysis. The results show the following: (1) The quality of the prefabricated components, the standardization degree of the prefabricated components, and the environment of the installation working space in the construction risk assessment indicators of prefabricated buildings obtained by the AHP-CRITIC weighting method have higher weights. (2) Four prefabricated construction enterprises under China State Construction Corporation are evaluated, and the evaluation results effectively evaluate the project risk situation before an accident occurred, achieving the goal of improving the risk management efficiency. (3) The AHP-CRITIC weighting method can reflect the fuzziness of the construction risk of the evaluated project, effectively reduce information loss, and thus make the evaluation results more accurate. The conclusions have important practical significance for improving the construction risk management of prefabricated buildings.

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Section: Introductionmentioning

confidence: 99%

A Novel Risk Assessment Model for Prefabricated Building Construction Based on Combination Weight and Catastrophe Progression Method

2023

Teh. vjesn.

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“…Other studies compared the effectiveness of using PP fibres instead of mineral fibres (i.e., carbon, basalt), achieving lower crack propagation, just as increased strength and stiffness of samples [5][6]. Furthermore, the reduction in shrinkage of recycled mortars and the improvement of their mechanical strength by using PP, glass and steel fibres were analysed by Saiz-Martínez et al [7].…”

Section: Introductionmentioning

confidence: 99%

Comparative study of physico-mechanical properties of polypropylene fibre-reinforced gypsum composites

Romero-Gómez,

Rubio-de-Hita,

Pedreño-Rojas

et al. 2023

Proceedings of the 15th International Conference on X-Ray Microscopy – Xrm2022

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Nowadays, the growing demand of plastic is leading to an uncontrolled waste production that threats the Planet's health. Over 8 million tonnes of plastic debris go into the ocean annually because of poor end-life management. Single-use products represent one of the main sources of plastic pollution, due to its low recycling rate related to its large production. Among them, personal hygiene disposable products (e.g., non-degradable wet wipes) represent a hazardous concern to marine ecosystem because of their dumping into the sea, dragged away by wastewater currents. Classified as non-woven textiles, non-degradable wet wipes are made from polymeric fibres, mainly polypropylene (PP), that complicate their degradation in contact with water. The incorrect disposal society makes of this waste causes devasting blockages in sewerage network, with alarming environmental and economic consequences. In this sense, alternative solutions to promote the recycling of this waste are needed in support of governmental regulations. Thus, from construction sector and committed to the Circular Economy's objectives set by the European Green Deal, the present work evaluates the feasibility of using PP waste fibres from disposable wet-wipes, as alternative to commercial PP reinforcement fibres, to produce eco-friendly reinforced gypsum-based products. Two types of reinforced-gypsum composites were prepared by adding commercial polypropylene (PPF) and waste polypropylene (PPWF) fibres, respectively. Different addition levels of fibre (2, 2.5, 3 and 3.5% by weight of gypsum) were selected to develop each group of gypsum blends. Then, composites were subjected to an experimental campaign based on dry density, mechanical behaviour (flexural and compressive strength) and deformability pre-failure, following the guidelines stablished by standards and comparing the results with the control material. The results showed a slight decrease of density as the percentage of PPWF rose, when compared to reference gypsum. Despite of the fact that lower values of mechanical strength were got by composites containing PPWF compared to those reinforced by PPF, a significant improvement of flexural strength (up to ∼19.5%) was reached by mixtures with 2.5wt% PPWF content, in relation to control material. On the other hand, a decrease on compressive strength of composites with PPWF addition was observed, unlike the performance showed by gypsums with PPF content up to 2.5 wt% (∼4.5% increase). However, all the data were over the minimum strength values stablished by standard. Furthermore, greater plastic deformation was developed by fibre-reinforced gypsum before to reach the failure point, in comparison with control gypsum which presented a brittle failure. Finally, it could be inferred the effectiveness of commercial PPF to enhance the mechanical properties of gypsum composites, just as the feasibility of using recycled WPPF as eco-friendly replacement to obtain gypsums for construction applications with both mechanical and environmental improvements, so promo...

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“…In this sense, one of the main alternatives is to incorporate reinforcement materials during the mixing process of these mortars [22]. These reinforcing materials are generally added in the form of fibers that can be synthetic or natural [23]. The most commonly used synthetic fibers are glass fibers [24], basalt [25], steel [26], carbon [27] and polypropylene [28], which have demonstrated their technical feasibility to improve the mechanical properties of masonry mortars, especially by increasing their flexural strength and decreasing shrinkage [29].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers

2021

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The reuse of construction and demolition waste is a necessary way to achieve greater sustainability in building, introducing the criteria of the so-called circular economy in the design of the production process of new construction materials. This research focuses on analyzing the properties of mortars made with recycled aggregates from concrete waste and reinforced with aramid fibers. For this purpose, an experimental campaign was carried out, including chemical, physical, mechanical and durability tests, performing a statistical analysis to discuss the different properties analyzed. The results show how the incorporation of aramid fibers in the matrix of cement mortars made with recycled concrete aggregate improves their technical performance and mechanical resistance, thus increasing their application possibilities and achieving similar results in some properties to those obtained with traditional mortars made with natural aggregate.

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Comparative Analysis of Fibre-Reinforced Plasters for the Production of Precast Elements

Cited by 6 publications

References 11 publications

A Novel Risk Assessment Model for Prefabricated Building Construction Based on Combination Weight and Catastrophe Progression Method

A Novel Risk Assessment Model for Prefabricated Building Construction Based on Combination Weight and Catastrophe Progression Method

Comparative study of physico-mechanical properties of polypropylene fibre-reinforced gypsum composites

Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers

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