The effect of foam polystyrene granules on cement composite properties

Laukaitis, A.; Žurauskas, Rimvydas; Kerien, J.

doi:10.1016/j.cemconcomp.2003.09.004

Cited by 169 publications

(76 citation statements)

References 16 publications

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“…Reductions in thermal conductivity of 60% for ground EPS and 47% for powdered EPS were observed. The effect of the type of EPS used was discussed in previous work on the mechanical, physical and microstructural properties of mortars made with EPS as lightweight aggregate (33,34). The higher thermal conductivity of mortars containing EPS powdered compared to mortars containing EPS ground is due to the higher bulk density.…”

Section: Thermal Conductivity and Dry Bulk Densitymentioning

confidence: 99%

“…Other studies have characterised the mechanical and thermal properties of concrete containing EPS (32). EPS beads have been used to design thermally insulating composites made with foamed cement pastes, using additives to prevent segregation and improve adherence (33). However, only a limited amount of research has investigated commercial EPS (34) or various types of waste EPS (35,36) in cement mortars.…”

Section: Introductionmentioning

confidence: 99%

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Lightweight mortars containing expanded polystyrene and paper sludge ash

Ferrándiz-Mas

Bond

García-Alcocel

et al. 2014

Construction and Building Materials

125

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The objective of this research was to develop lightweight cement mortars with good thermal-insulation properties by incorporating expanded polystyrene (EPS) and paper sludge ash (PSA), both of which are problematic waste materials. The mortars formed had low thermal conductivity and low bulk density compared to control samples. Ground EPS produced lower thermal conductivity samples than powdered EPS. Resource efficient mortars containing up to 20% PSA, and 60% of EPS are considered suitable for use in rendering and plastering applications.

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Section: Thermal Conductivity and Dry Bulk Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lightweight mortars containing expanded polystyrene and paper sludge ash

Ferrándiz-Mas

Bond

García-Alcocel

et al. 2014

Construction and Building Materials

125

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“…Other works used EPS beads to design thermal insulator composites made with foamed cement pastes, using additives to prevent segregation and improve adherence (16). The EPS has also been used in plaster reinforced with polypropylene fibres for the manufacture of industrial components (17) and in mixtures of fly ash and metakaolinite to obtain light inorganic polymeric materials (light geopolymers) (18).…”

Section: Materiales Y Preparación De Los Morterosmentioning

confidence: 99%

“…Otras líneas de trabajo utilizan perlas de EPS para diseñar composites aislantes térmicos fabricados con pastas de cemento espumadas, como matriz, y gránulos de poliestireno espumado como fílleres usando aditivos que impidan la segregación y mejoren la adherencia (16). El EPS también se ha utilizado con matriz de escayola reforzada con fibras de polipropileno para la fabricación de elementos industrializados (17) y con mezclas de ceniza volante y metacaolinita para la obtención de materiales poliméri-cos inorgánicos ligeros (geopolímeros ligeros) (18).…”

Section: Introductionunclassified

Caracterización física y mecánica de morteros de cemento Portland fabricados con adición de partículas de poliestireno expandido (EPS)

Ferrándiz-Mas¹,

García-Alcocel²

2012

Mater. construcc.

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Caracterización física y mecánica de morteros de cemento Portland fabricados con adición de partículas de poliestireno expandido (EPS) Physical and mechanical characterization of Portland cement mortars made with expanded polystyrene particles addition (EPS) RESUMENEl objetivo de este estudio es evaluar la influencia de la adición de distintos tipos y dosificaciones de poliestireno expandido, tanto comerciales como procedentes de reciclado, sobre las características físicas y mecánicas de morteros de cemento Portland. Las variables estudiadas fueron: consistencia, aire ocluido, densidad aparente, resistencias mecánicas, porosidad, absorción de agua y absorción acústica. Los morteros también se han caracterizado por microscopia electrónica de barrido. Con objeto de mejorar la trabajabilidad de los morteros se ha empleado aditivos aireante, retenedor de agua y fluidificante. Los resultados muestran que al aumentar la cantidad de poliestireno expandido la trabajabilidad y las resistencias mecánicas disminuyen. El empleo de aditivos mejora la trabajabilidad y la porosidad, permitiendo fabricar morteros con altos contenidos de residuo, con propiedades mecánicas adecuadas para su empleo como morteros de albañilería, revoco y enlucido.Palabras clave: morteros, cemento, propiedades físicas y mecánicas, poliestireno expandido (EPS), residuo. SUMMARYOn this work the influence of the addition of different types (commercial and recycled) and contents of expanded polystyrene on the physical and mechanical properties of Portland cement mortars has been studied. Variables studied are: workability, air content, bulk density, mechanical strength, porosity, water absorption and sound absorption. Mixtures have been also characterized by scanning electron microscopy. Airentraining agents, water retainer and superplasticizer additives have been used in order to improve the workability of mortars. The results show that the workability and mechanical strength decreases with increasing content of expanded polystyrene. Additives improve the workability and porosity, allowing manufacture mortars with high levels of recycled material that show mechanical properties suitable for use as masonry mortars, stucco and plaster.

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“…There are many lightweight construction materials that contain recycled fillers such as fly ash (Kearsley and Wainwright, 2001;James et al, 2011), waste glass (Duman et al, 2002), steel slag (Yue et al, 2000;Fiore et al, 2008), lightweight expanded clay aggregates (James et al, 2011;Roshan et al, 2010), foam polystyrene (Laukaitis et al, 2005) and more. Landfills all over the world are filled with tremendous amounts of scrap tires.…”

Section: Introductionmentioning

confidence: 99%

Use of Crumb Rubber to Improve Thermal Efficiency of Cement-Based Materials

Fadiel

Rifaie

Abu-Lebdeh

et al. 2014

American Journal of Engineering and Applied Sciences

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Motivated by the tremendous trend toward green environment and to reduce the effect of scrap tires on the environment and human health, this research is an attempt to find a practical and environmentally sound solution of the problem of scrap tires by developing a light weight with low thermal conductivity composite construction materials using waste tires. A few literatures may be found about the effect of crumb rubber on thermal conductivity of mortar. Thus, in this research project, an experimental program was established to investigate the effect of the amount and size of crumb rubber (rubber obtained from recycling scrap tires) on the thermal properties of mortar. Four levels of crumb rubber addition: 10, 20, 30 and 40% and three sizes of crumb rubber (#30, #10_20 and a combination of both sizes) were considered to make twelve different mixtures of the rubberized mortar. Specially designed and constructed heat transfer measurement device was used to measure thermal conductivity of the specimens. Results were used to determine the optimal amount of crumb rubber that gives the least thermal conductivity, which directly related to the improvement in thermal resistance of concrete mixtures. It was found that the size and the amount of crumb rubber had an effect on thermal properties of the specimens investigated. The thermal conductivity of rubberized mortar was decreased by 28% when crumb rubber #10_20 was used. It was also found that #10_20 crumb rubber had more effect on the thermal conductivity reduction than #30 crumb rubbers. An empirical equation is proposed to predict thermal conductivity of rubberized mortar.

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The effect of foam polystyrene granules on cement composite properties

Cited by 169 publications

References 16 publications

Lightweight mortars containing expanded polystyrene and paper sludge ash

Lightweight mortars containing expanded polystyrene and paper sludge ash

Caracterización física y mecánica de morteros de cemento Portland fabricados con adición de partículas de poliestireno expandido (EPS)

Use of Crumb Rubber to Improve Thermal Efficiency of Cement-Based Materials

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