Recycling of Demolished Masonry Rubble as Coarse Aggregate in Concrete: Review

Khalaf, Fouad; DeVenny, Alan S.

doi:10.1061/(asce)0899-1561(2004)16:4(331)

Cited by 210 publications

(85 citation statements)

References 19 publications

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“…Confirming the results found, there are authors [24,25] that state that the module of deformation of concretes with recycled ceramic aggregates only reach 50% to 66% of the concrete modules with natural aggregates of equal resistance. Some works [14,19,25] presented modules of deformation of concretes made of recycled concrete aggregates 15 to 45% less than the modules of conventional concretes.…”

Section: Influence Of the Type Of Recycled Aggregate From Constructiosupporting

confidence: 73%

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Determinação da influência do tipo de agregado reciclado de resíduo de construção e demolição sobre o módulo de deformação de concretos produzidos com agregados reciclados

Cabral

Schalch²,

Molin

et al. 2008

Rev. IBRACON Estrut. Mater.

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Com o intuito de contribuir no estudo de concretos produzidos com agregados reciclados, produziu-se um traço de referência (com agregados naturais) e outros 49 traços, substituindo-se os agregados naturais por agregados reciclados de concreto, de argamassa e de cerâmica vermelha, que são os 3 maiores constituintes dos resíduos de construção e demolição das cidades brasileiras. Além do tipo de agregado, também variou-se a relação água/cimento (a/c), entre os valores de 0,4 a 0,8, fixando-se o teor de água na pré-umidificação dos agregados reciclados. O módulo de deformação dos concretos foram determinados aos 28 dias, utilizando-se a norma brasileira ABNT NBR 8522/03, em corpos-de-prova cilíndricos. Os resultados apontam que a substituição do agregado natural pelo reciclado resulta em uma redução do módulo de deformação, sendo que o agregado graúdo de cerâmica vermelha e o agregado miúdo reciclado de concreto foram os que exerceram a maior e a menor influência, respectivamente, sobre o módulo de deformação dos concretos produzidos.

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Section: Influence Of the Type Of Recycled Aggregate From Constructiosupporting

confidence: 73%

“…Some works [14,19,25] presented modules of deformation of concretes made of recycled concrete aggregates 15 to 45% less than the modules of conventional concretes.…”

Section: Influence Of the Type Of Recycled Aggregate From Constructiomentioning

confidence: 99%

Determinação da influência do tipo de agregado reciclado de resíduo de construção e demolição sobre o módulo de deformação de concretos produzidos com agregados reciclados

Cabral

Schalch²,

Molin

et al. 2008

Rev. IBRACON Estrut. Mater.

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show abstract

“…These materials become unstable in concrete when subjected to drying and wetting or freezing and thawing (Khalaf, DeVenny 2004). The acceptable limit of organic matter in concrete is 0.15% by weight of RCA (ECCO 1999).…”

Section: Organic Mattermentioning

confidence: 99%

Use of Recycled Concrete Aggregate in Concrete: A Review

Safiuddin

Alengaram

Rahman

et al. 2013

Journal of Civil Engineering and Management

142

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Abstract. The use of recycled concrete aggregate (RCA) in concrete as partial and full replacements of natural coarse aggregate is growing interest in the construction industry, as it reduces the demand for virgin aggregate. In addition, the use of RCA leads to a possible solution to the environmental problem caused by concrete waste and reduces the negative environmental impact of the aggregate extraction from natural resources. This paper presents a comprehensive review on the use of RCA in concrete based on the experimental data available in the published research. The most important physical, mechanical, and chemical properties of RCA are discussed in this paper. However, more emphasis has been given to discuss the effects of RCA on the fresh and hardened properties and durability of concrete. This paper also identifies the gaps existing in the present state of knowledge on RCA and RCA concrete and provides some recommendations for future research. Keywords: concrete; natural coarse aggregate; recycled concrete aggregate; fresh properties; hardened properties; durability.

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“…The frequently studied SCMs are fly ash (Basri et al, 1999;Kevern et al, 2011), furnace slag (Kevern et al, 2011), silica fume (Limbachiya et al, 2012), etc. The investigated AAs include, but are not limited to, RCA (Alam et al, 2013;Etxeberria et al, 2007;Limbachiya et al, 2012;Sabai et al, 2013), building rubbles (Khalaf and Devenny, 2004), tire rubber (Nehdi and Khan, 2001), oil palm shells (Basri et al, 1999), and waste glass (Berry et al, 2011;Ling et al, 2013). Several researchers further investigated the structural applications of sustainable concrete in reinforced concrete beams or slabs (Akhtaruzzaman and Hasnat, 1986;Berry et al, 2011;Mannan and Ganapathy, 2004;Kumar et al, 2007).…”

Section: The Emergency and Potential Use Of Sustainable Raw Materialsmentioning

confidence: 99%

Survey of the current status of sustainable concrete production in the U.S.

Jin

Chang

Soboyejo

2015

Resources, Conservation and Recycling

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Abstract:The wide use of concrete in construction has significantly impacted energy use and environmental quality. Fortunately, the emergence of sustainable concrete, made with alternative or recycled waste materials, offers great opportunities to improve concrete sustainability. This paper studies the current status of sustainable concrete production in the U.S. through a questionnaire survey. It revealed that the surveyed companies varied largely in their recognition and adoption of supplementary cementitious materials (SCMs) and alternative aggregates (AAs). Of the various alternative materials available, the most widely used by survey participants were limited to the three SCMs (fly ash, slag cement, and silica fume) and two types of aggregates (lightweight and recycled concrete aggregates). Multiple benefits and barriers to the adoption of SCMs and AAs, e.g., concrete properties, cost, and local availability, were also disclosed by survey participants. Statistical comparisons identified differences in sustainable concrete production between ready mixed concrete suppliers and concrete prefabricators, as well as in its applications in structural and nonstructural concrete components. The findings provide a better understanding of the U.S. sustainable concrete production and offer insights into how researchers can help address industry concerns about the implementation of sustainable concrete.

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Recycling of Demolished Masonry Rubble as Coarse Aggregate in Concrete: Review

Cited by 210 publications

References 19 publications

Determinação da influência do tipo de agregado reciclado de resíduo de construção e demolição sobre o módulo de deformação de concretos produzidos com agregados reciclados

Determinação da influência do tipo de agregado reciclado de resíduo de construção e demolição sobre o módulo de deformação de concretos produzidos com agregados reciclados

Use of Recycled Concrete Aggregate in Concrete: A Review

Survey of the current status of sustainable concrete production in the U.S.

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