Improvement of gypsum plaster strain capacity by the addition of rubber particles from recycled tyres

Serna, Angel; Rı́o, M. Del; Palomo, José; González, Mariano Ruiz

doi:10.1016/j.conbuildmat.2012.04.093

Cited by 58 publications

(33 citation statements)

References 6 publications

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“…The experimental values here measured are in close correspondence with those obtained in previous research works on plaster with crumbed rubber [18], considering too the small additions between 1% and 5% by weight [20] considering the back extrapolation of the fitted tendency lines obtained in this investigation.…”

Section: Specimensupporting

confidence: 80%

“…Studies have been conducted with single particle sized crumbed additions in cement mortars [18] or plaster [19], studying their physical and mechanical properties and thermal insulation and acoustic ones; in both cases a reduction occurs on the mechanical strength -similar to those obtained in the study here presented -and an improvement in the thermal and acoustic insulation. Studies with minimal additions of rubber, between 1% and 5%, and three particle sizes of recycled ELT rubber similar to the ones in this study [20], show a decrease in the mechanical properties of plaster (16% in bending, and 18.3% in compression), and an increase in the elasticity module (between 1% and the 3%). Nevertheless, these studies conclude, as opposed to the results obtained in the present work, that there is no significant difference regarding the size of the rubber particle.…”

Section: Introductionmentioning

confidence: 95%

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Influence of proportion and particle size gradation of rubber from end-of-life tires on mechanical, thermal and acoustic properties of plaster–rubber mortars

2013

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abstra ctThis work presents the main experimental results obtained from the study of plaster test pieces and boards with addition of various volumetric rubber fractions from mechanical grinding of end-of-life tires (ELTs), in three different particle size gradations. It includes a description of the materials employed, and their proportions. The physical and mechanical properties, as well as the thermal conductivity and acous-tic insulation properties are analyzed. Experimental results obtained for specimens with addition of recy-cled rubber are compared with similar ones, carried out on specimens of plaster of identical features without any addition, evaluating the influence of the particle size and mixture proportions. An improve-ment in thermal and acoustic performance has been obtained as well as a reduction in density, and as a result, some constructive applications for paving and slabs in rehabilitation works are proposed.

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Section: Specimensupporting

confidence: 80%

Section: Introductionmentioning

confidence: 95%

Influence of proportion and particle size gradation of rubber from end-of-life tires on mechanical, thermal and acoustic properties of plaster–rubber mortars

2013

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“…Increasing amounts of solid waste are produced, placing constraints on the availability of landfill sites, with a consequent rise in disposal and dumping costs (4). The current research examines the viability of introducing various wastes of industrial origin in a gypsum matrix (5)(6)(7)(8). The aim is to reduce the weight of the gypsum and to improve its thermal properties.…”

Section: Introductionmentioning

confidence: 99%

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

et al. 2016

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Gypsum plasterboard that incorporates various combinations of polyurethane foam waste and polypropylene fibers in its matrix is studied. The prefabricated material was characterized in a series of standardized tests: bulk density, maximum breaking load under flexion stress, total water absorption, surface hardness, thermal properties, and reaction to fire performance. Polypropylene fibers were added to the polyurethane gypsum composites to improve the mechanical behavior of the plasterboard under loading. The results indicate that increased quantities of polymer waste led to significant reductions in the weight/surface ratio, the mechanical strength and the surface hardness of the gypsum, as well as improving its thermal resistance. The polypropylene fibers showed good adhesion to the polymer and the gypsum matrix, which enhanced the mechanical performance and the absorption capacity of these compounds. The non-combustibility test demonstrated the potential of the new material for use in internal linings. RESUMEN: Caracterización de placas de yeso con residuos de espuma de poliuretano reforzadas con fibras de polipropileno.Este artículo presenta un estudio experimental basado en la reutilización de residuos de poliuretano en una matriz de yeso para elaborar una placa de yeso laminado. Las placas fueron caracterizadas mediante los ensayos normalizados de densidad aparente, carga de rotura máxima a flexión, absorción total de agua, dureza superficial y reacción al fuego. Se han introducido fibras de polipropileno en la matriz con el objetivo de aumentar la resistencia mecánica del material. Los resultados muestran que el incremento de residuo polimérico en el material implica importantes reducciones de peso, resistencia mecánica y dureza superficial, a la par que se mejora su resistencia térmica consiguiéndose valores similares a los comerciales. Las fibras de polipropileno mostraron una buena adhesión con el polímero, mejorando el comportamiento mecánico y la capacidad de absorción. El ensayo de reacción al fuego confirmó que los residuos de poliuretano pueden ser empleados en la fabricación de placas de yeso laminado en cumplimiento con la normativa.

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“…No que diz respeito a utilização da borracha nos compósitos de gesso, Serna et al (2012) estudaram a adição de borracha de pneus no fim de suas vidas úteis (ELTs ou End-of-LifeTyres) em pastas de gesso. Foram incorporados 1%, 3% e 5% de volume de borrachas para três diferentes granulometrias de partículas de borracha: 0-1 mm, 1-2 mm e 2-4 mm.…”

Section: Figura 1: Pneu Inservível Descartado Incorretamenteunclassified

Estudo de compósitos de gesso incorporados com duas diferentes granulometrias de borracha de pneus

Urzulin¹,

Akasaki²,

Pinto³

2016

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RESUMONeste trabalho foram estudadas algumas características físicas de compósitos de gesso incorporados com duas diferentes granulometrias de borracha de pneus. O programa experimental foi formado pelos seguintes ensaios: consistência (mini-slump), resistência à compressão e microscopia eletrônica de varredura. A borracha utilizada nos compósitos foi proveniente do processo de recauchutagem de pneus com incorporação de 5% e 10% em relação à massa de gesso e as duas diferentes granulometrias utilizadas foram denominadas de fina (#0,6mm) e grossa (#1,19mm). Os resultados foram comparados com a pasta controle, na qual não houve incorporação de borracha. As borrachas de diferentes granulometrias se destacaram em distintos pontos. A borracha fina apresentou resistência à compressão próxima ao valor observado no controle, com adição de 5% em massa, o que pode ser devido a sua aderência à pasta de gesso, que se deu de maneira menos porosa e com uma interface mais próxima entre as partículas de borracha e a pasta, observado através do ensaio de Microscopia Eletrônica de Varredura. A borracha grossa apresentou os melhores resultados em consistência (mini-slump), contribuindo para a trabalhabilidade da pasta, o que também foi observado na Microscopia Eletrônica de Varredura, onde a borracha grossa apresenta menos aderência à pasta de gesso, comparado ao compósito com incorporação de borracha fina. Foi possível afirmar, então, que a borracha como material residual apresentou características interessantes em aplicações em compósitos de gesso. PALAVRAS-CHAVE: Compósitos de gesso. Borracha de pneus. Resistência à compressão. Microscopia eletrônica de varredura. Consistência. Meio ambiente. Material alternativo. ABSTRACTIn this work were studied some physical characteristics of gypsum composites incorporated with tow different granulometries of tire rubber. The experimental program was formed by the following tests: consistency (minislump), compression resistence and scanning electron microscopy. The rubber used in the composites came from rubber retreading process and were incorporated with 5% and 10% in relation to the mass of gypsum. The two different granulometries were named thin (#0,6mm) and thick (#1,19mm). The results were compared with a control paste, which had no rubber incorporation. The rubbers of different granulometries stood out in distinct points. The thin rubber showed compression resistence close to the observed in the control paste, with addition of 5% in relation to the mass of gypsum, that may be due to its tacking to the gypsum paste, which happened in a less porous way and with a closer interface between rubber particles and paste, observed on scanning electron microscopy. Meanwhile, the thick rubber showed better results in consistency, contributing to the paste workability, which was also observed on the scanning electron microscopy, where the thick rubber was less tacked on the paste, compared with the other composite. Then, it was possible to say that rubber as a residual material showed interestin...

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Improvement of gypsum plaster strain capacity by the addition of rubber particles from recycled tyres

Cited by 58 publications

References 6 publications

Influence of proportion and particle size gradation of rubber from end-of-life tires on mechanical, thermal and acoustic properties of plaster–rubber mortars

Influence of proportion and particle size gradation of rubber from end-of-life tires on mechanical, thermal and acoustic properties of plaster–rubber mortars

Characterization of gypsum plasterboard with polyurethane foam waste reinforced with polypropylene fibers

Estudo de compósitos de gesso incorporados com duas diferentes granulometrias de borracha de pneus

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