Economic analysis of conventional versus selective demolition—A case study

Coelho, André; Brito, Jorge de

doi:10.1016/j.resconrec.2010.11.003

Cited by 120 publications

(71 citation statements)

References 3 publications

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“…However, a detailed economic analysis of conventional versus selective demolition [1] showed that in spite of the economic viability of selective demolition depending largely on labour costs, tipping fees, and market prices for recovered materials, it may ultimately be more profitable than the conventional demolition approach. Furthermore, there are clear benefits from an environmental point of view from using selective demolition, namely in a direct reduction in the material sent to landfill [2,3] as well as other environmental impacts specifically caused by climatic change, acidification, summer smog, nitrification and amount of heavy metals [4].…”

Section: Introductionmentioning

confidence: 99%

Carbonation behaviour of recycled aggregate concrete

Silva

Neves

Dhir

2015

Cement and Concrete Composites

302

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a b s t r a c tThis paper reviews the effect of incorporating recycled aggregates, sourced from construction and demolition waste, on the carbonation behaviour of concrete. It identifies various influencing aspects related to the use of recycled aggregates, such as replacement level, size and origin, as well as the influence of curing conditions, use of chemical admixtures and additions, on carbonation over a long period of time. A statistical analysis on the effect of introducing increasing amounts of recycled aggregates on the carbonation depth and coefficient of accelerated carbonation is presented. This paper also presents the use of existing methodologies to estimate the required accelerated carbonation resistance of a reinforced recycled aggregate concrete exposed to natural carbonation conditions with the use of accelerated carbonation tests. Results show clear increasing carbonation depths with increasing replacement levels when recycled aggregate concrete mixes are made with a similar mix design to that of the control natural aggregate concrete. The relationship between the compressive strength and coefficients of accelerated carbonation is similar between the control concrete and the recycled aggregate concrete mixes.

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Section: Introductionmentioning

confidence: 99%

Carbonation behaviour of recycled aggregate concrete

Silva

Neves

Dhir

2015

Cement and Concrete Composites

302

View full text Add to dashboard Cite

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“…The concept of selective demolition is still often seen by the industry as having debateable economic benefit and little practical value. However, a detailed economic analysis of conventional versus selective demolition 1 showed that, in spite of the economic viability of selective demolition depending largely on labour costs, tipping fees, and market prices for recovered materials, it may ultimately be more profitable than conventional demolition. Furthermore, there are clear benefits from an environmental point of view from using selective demolition, namely a direct reduction of the material sent to landfill 2,3 as well as other environmental impacts specifically caused by climatic change, acidification, summer smog, nitrification and amount of heavy metals 4 .…”

Section: Introductionmentioning

confidence: 99%

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

2015

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This paper provides a literature review and analysis of the various influencing aspects related to the use of recycled aggregates, sourced from construction and demolition waste, on the chloride ion penetration of concrete. A statistical analysis on the effect of incorporating increasing amounts of recycled aggregates of different type, size, and class on the chloride ion migration and total charge passed of concrete is also presented. The paper also presents the relationship between these properties and the corresponding compressive strength. The results show strong correlations between these parameters, which are independent of other aspects related to recycled aggregate use and made it possible obtaining a relationship between the values acquired via NT Build 492 and ASTM C1202.

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“…There are many possible demolition methods, such as using explosives, wrecking balls, hydraulic crushers and pulverisers, and manual dismantling. The selection of the demolition method that will be used is dependent on the project conditions, construction type, work force, time and site constraints and the availability of equipment (Coelho and Brito 2011;Guy 2003;CTIC 1995;CIB 2005;Shultmann 2005). But, the selection of the demolition method also greatly affects both the mass and the quality of glass that can be recycled or re-used and the overall cost of the whole operation (Coelho and Brito 2011).…”

Section: Problem Analysismentioning

confidence: 99%

“…The selection of the demolition method that will be used is dependent on the project conditions, construction type, work force, time and site constraints and the availability of equipment (Coelho and Brito 2011;Guy 2003;CTIC 1995;CIB 2005;Shultmann 2005). But, the selection of the demolition method also greatly affects both the mass and the quality of glass that can be recycled or re-used and the overall cost of the whole operation (Coelho and Brito 2011). For instance, explosives or hydraulic crushers and pulverisers are often employed because these methods significantly save on time and labour (Wu et al 2014).…”

Section: Problem Analysismentioning

confidence: 99%

Assessment of the energy savings and $$\hbox {CO}_{\varvec{2}}$$ CO 2 emissions reduction of glass structures through alternative demolition scenarios

2016

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Glass is a material that has been significantly increasing its role in architecture in recent decades. Although glass is a material that can survive long, as can be seen from the archaeological pieces in many museums, in practice the glass structures that built nowadays have a finite life time. A notorious case is the original New York Apple Cube, which was removed and replaced within several years of original completion. Whatever the eventual lifetime of the structure, there will be a point where the structure needs to be demolished. This introduces critical questions about the relation between ecological impact and the demolition methods and procedure. This paper looks at the eco-impact of different end of life scenarios of glass structures, using the Haarlem glass cube as a well-documented example to determine the differences between various ends of life scenarios.

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Economic analysis of conventional versus selective demolition—A case study

Cited by 120 publications

References 3 publications

Carbonation behaviour of recycled aggregate concrete

Carbonation behaviour of recycled aggregate concrete

Prediction of Chloride Ion Penetration of Recycled Aggregate Concrete

Assessment of the energy savings and $$\hbox {CO}_{\varvec{2}}$$ CO 2 emissions reduction of glass structures through alternative demolition scenarios

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