Properties of lightweight expanded polystyrene aggregate concretes containing fly ash

Babu, Daneti Saradhi; Babu, K. Ganesh; Wee, T. H.

doi:10.1016/j.cemconres.2004.11.015

Cited by 225 publications

(49 citation statements)

References 6 publications

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“…La literatura en el campo del hormigón con EPS está principalmente dedicada a la caracterización de las propiedades mecánicas de estos materiales, tratando de mejorarlas utilizando EPS de diferentes granulometrías, aditivos y distintas adiciones como cenizas volantes y humo de sílice (11)(12)(13). Otros trabajos además de caracterizar térmica y mecánica-mente el hormigón con EPS proponen métodos de modelización para predecir estas propiedades y optimizar la consecución de ambas simultáneamente (14).…”

Section: Introductionunclassified

“…The literature in the field of concrete with EPS is especially about the characterization of the mechanical properties of these materials, trying to improve those using EPS of different grain sizes, additives and other additions such as fly ash and silica fume (11)(12)(13). Other studies characterize the mechanical and thermal EPS concrete properties.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionunclassified

Section: Introductionmentioning

confidence: 99%

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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“…Equation 5 is recommended by the CEB Manual of Design and Technology (1978) for autoclaved aerated concrete, where the constant a usually ranges from 1.5 to 2.0. A model that can be regarded as a modified CEB model has been developed to describe the modulus of elasticity of EPS lightweight concretes (Saradhibabu et al, 2005):…”

Section: Modulus Of Elasticity In Compressionmentioning

confidence: 99%

The Pore Characteristics of Geopolymer Foam Concrete and Their Impact on the Compressive Strength and Modulus

Zhang

Wang

2016

Front. Mater.

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The pore characteristics of geopolymer foam concretes (GFCs) manufactured in the laboratory with 0-16% foam additions were examined using image analysis (IA) and vacuum water saturation techniques. The pore size distribution, pore shape, and porosity were obtained. The IA method provides a suitable approach to obtain the information of large pores, which are more important in affecting the compressive strength of GFC. By examining the applicability of the existing models of predicting compressive strength of foam concrete, a modified Ryshkevitch's model is proposed for GFC, in which only the porosity that is contributed by the pores over a critical diameter (>100 μm) is considered. This "critical void model" is shown to have very satisfying prediction capability in the studied range of porosity. A compression-modulus model for Portland cement concrete is recommended for predicting the compression-modulus elasticity of GFC. This study confirms that GFC have similar pore structures and mechanical behavior as those Portland cement foam concrete and can be used alternatively in the industry for the construction and insulation purposes.

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“…Traditionally, different types of LWFs have been studied for their use in the cement-based composites such as expanded perlite (Demirboǧa et al 2001;Kramar and Bindiganavile 2010;Lanzó n and García-Ruiz 2008;Lu et al 2014), expanded glass beads (ASTM D790-10 2010; Bouvard et al 2007), shale (de Gennaro et al 2008;Ke et al 2009;Lotfy et al 2015), expanded polystyrene beads (Bouvard et al 2007;Miled et al 2007;Saradhi Babu et al 2005), expanded clay (Chandra and Berntsson 2002;Gao et al 2014) etc. and the unit weight has been successfully achieved within the stipulated guidelines.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Lightweight Functional Fillers for Use in Cementitious Composites

Hanif

Cheng

et al. 2017

Int J Concr Struct Mater

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Abstract:The effects of different lightweight functional fillers on the properties of cement-based composites are investigated in this study. The fillers include fly ash cenospheres (FACs) and glass micro-spheres (GMS15 and GMS38) in various proportions. The developed composites were tested for compressive, flexural and tensile strengths at 10 and 28-day ages. The results indicated that both FACs and GMS38 are excellent candidates for producing strong lightweight composites. However, incorporation of GMS15 resulted in much lower specific strength values (only up to 13.64 kPa/kg m 3 ) due to its thinner shell thickness and lower isostatic crushing strength value (2.07 MPa). Microstructural analyses further revealed that GMS38 and GMS15 were better suited for thermal insulating applications. However, higher weight fraction of the fillers in composites leads to increased porosity which might be detrimental to their strength development.

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Properties of lightweight expanded polystyrene aggregate concretes containing fly ash

Cited by 225 publications

References 6 publications

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

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

The Pore Characteristics of Geopolymer Foam Concrete and Their Impact on the Compressive Strength and Modulus

Effects of Different Lightweight Functional Fillers for Use in Cementitious Composites

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