Construction and demolition waste indicators

Mália, Miguel; Brito, Jorge de; Pinheiro, Manuel Duarte; Bravo, Miguel

doi:10.1177/0734242x12471707

Cited by 168 publications

(78 citation statements)

References 20 publications

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“…The percentages of "masonry-clay materials" are quite variable (between 1% and 29%). Mália et al [34] analysed several sources on the composition of CDW and also concluded that concrete and ceramic materials are the main sources of inert materials.…”

Section: Recycled Aggregate Propertiesmentioning

confidence: 99%

Thermal Performance of Concrete with Recycled Aggregates from CDW Plants

2017

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Abstract:This investigation intends to analyse the thermal performance of concrete with recycled aggregates (RA) from construction and demolition waste (CDW) collected from several locations in Portugal. A total of 17 concrete mixes were analysed by means of thermal conductivity tests. Firstly, the composition and characteristics of the aggregates (natural and recycled) used in the production of the concrete mixes were analysed thoroughly, by means of several physical and chemical tests. Later, in order to evaluate the thermal behaviour of the mixes, several tests were performed and their results analysed, both on the fresh-state (slump with the Abrams cone test, density and air content) and the hardened state (compressive strength and thermal conductivity). The analysis of the thermal behaviour showed that the use of RA improves the thermal performance of the concrete mixes. The extent of this change was shown to be quite variable depending on the origin of the RA used.

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Section: Recycled Aggregate Propertiesmentioning

confidence: 99%

Thermal Performance of Concrete with Recycled Aggregates from CDW Plants

2017

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“…In terms of WGA, there are relatively small differences between residential and nonresidential buildings, except for renovation, where non-residential building produce four times more C&DW [14].…”

Section: Residential Buildingsmentioning

confidence: 99%

“…While we know that metals are present, confidence in estimations tends to be weak, so wide ranges are applied to compensate for the low reliability [14]. Furthermore, there is variation due to the type of C&D activity: new construction projects may be precisely reported, while renovation and demolition are generally insufficiently documented [5].…”

Section: Buildings In Switzerland Andmentioning

confidence: 99%

Anticipating urban mining

Koutamanis¹,

Reijn²,

Bueren³

et al. 2017

24th Annual European Real Estate Society Conference

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In recent years there has been growing interest in urban mining from various environmental and economic perspectives. Materials hidden in buildings are attractive alternatives to raw ones, while building activities are responsible for a large share of waste. The paper is a summary of findings from an analysis of possibilities for urban mining in Amsterdam, focusing on prospecting for metals in residential buildings. Both global literature and interviews with Dutch demolition experts suggest that performance in metal recovery from buildings is as high as it can get. However, estimation of metal content in buildings and of waste processing rates is far from reliable, accurate and precise enough to support such claims or identify possibilities for further improvement, especially in relation to processes of urban and real-estate redevelopment and rejuvenation. To improve understanding and embedding of urban mining in these processes, we propose (a) a BIM-based information infrastructure that connects to municipal and owner information processes, so as to progressively collect all relevant information, allow for validation, verification and localization of valuable resources, as well as identify opportune moments for their extraction, and (b) policies that overcome the fragmented institutional character of the building sector, making information sharing a consequence of networking based on trust and shared values, driven by both demand and soft incentives relating to circularity.

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“…When looking at them at the country level, it is observed that different countries around the world have been investigated in this regard. Among them, there are (i) European countries such as Netherlands (Bossink & Brouwers, 1996), Greece (Banias, Achillas, Vlachokostas, Moussiopoulos & Papaioannou, 2011), Norway (Bergsdal, Bohne & Brattebo, 2007), Ireland (Kelly & Hanahoe, 2008) (Coelho & de Brito, 2011a,b;De Melo, Goncalves & Martins, 2011;Malia, de Brito, Pinheiro & Bravo, 2013), and Germany (Hoglmeier, Weber-Blaschke & Richter, 2013), (ii) Asian countries such as Hong Kong (Tam, 2008;Jaillon, Poon & Chiang, 2009;Cheng & Ma, 2013;Li & Zhang, 2013), Taiwan (Hsiao, Huang, Yu & Wernick, 2002), Malaysia (Begum, Siwar, Pereira & Jaafar, 2006;Lau, Whyte & Law, 2008;Che Hasan, Yusof, Mohd Ridzuan, Atan, Noordin & Abdul Ghani, 2013;Nagapan, Rahman, Asmi & Adnan, 2013), China (Li, Ding, Mi & Wang, 2013), Japan (Hashimoto, Tanikawa & Moriguchi, 2009), and Thailand (Kofoworola & Gheewala, 2009), (iii) American countries such as the US (Cochran & Townsend, 2010), Canada (Wimalasena, Ruwanpura & Hettiaratchi, 2010), and Brazil (Formoso, Soibelman, De Cesare & Isatto, 2002), (iv) Middle Eastern countries such as Kuwait (Kartam, Al-Mutairi, Al-Ghusain & Al-Humoud, 2004), Palestine (Al-Sari, Al-Khatib, Avraamides & Fatta-Kassinos, 2012), Israel (Katz & Baum, 2011), and Lebanon (Tamraz, Srour & Chehab, 2011), and lastly (v) Australia (McDonald & Smithers, 1998).…”

Section: Fresh Rmc Wastementioning

confidence: 99%

Fresh Ready-Mixed Concrete Waste in Construction Projects: A Planning Approach

Kazaz

Ulubeyli

et al. 2015

OTMCJ

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1280In the current study, how planning and truck-mixer based waste amounts per 1 m 3 fresh ready-mixed concrete (RMC) can be determined was presented. Toward this aim, the formation process of the fresh RMC waste in construction projects was first introduced in a detailed manner, together with an in-depth literature review in this specific domain of the construction engineering and management. Then, the measurement procedure of the waste amount or coefficient of the fresh RMC was revealed and discussed as a practical and creative planning knowledge. Hence, a useful and realistic waste management perspective about the cost and potential environmental savings of the RMC waste was drawn. Fresh Ready-Mixed Concrete Waste in Construction Projects IntroductionConstruction wastes not only affect the economy of a country, but also consume natural resources and pollute the environment for a very long term. According to Garvin (2004), 40-50% of the energy produced in the world and 16% of available water resources are consumed to produce construction materials defined as waste. CO2 that appears in the production process of such materials makes up 50% of the total CO2 emission in construction. Given the transportation of these material wastes, this share of 50% likely reaches up to 75%. In this environmental pollution and resource consumption, it should be noted that the cement manufacture plays an important role. In addition, construction wastes occupy large areas by volume. They have a share of approximately 20-40% of the total area occupied by wastes in the US, Canada, Hong Kong, Australia, Japan, and European Union countries (Stokoe, Kwong & Lau, 1999;Kibert, 2000;Poon, 2007). This share can likely increase further if wastes are measured in weight (Mulheron, 1988;Hendriks & Pietersen, 2000). Today, the construction industry tries to deal with enormous amounts of wastes as they are very damaging to the environment. However, it is very hard to assert that the construction industry has generally constituted and improved its waste-based business culture so far. In order to reveal the current position of the construction industry as a whole in terms of types and amounts of construction wastes, it is inevitable that various types of estimates and plans on sub-sectors of the construction industry should be carried out.In this context, how planning and truck-mixer based waste amounts per 1 m 3 fresh ready-mixed concrete (RMC) can be determined was presented in the current paper as a part of an on-going research project. This is because, in a reinforced-concrete building project, concrete can have a big share of about 10% of the total project budget (Kazaz, Ulubeyli & Turker, 2004). Of course, these amounts can be single numbers or interval-based values. This decision can be based on a statistical analysis of the real world data. Thus, while preparing their proposals, construction contractors in general and quantity surveyors and cost managers in particular can better estimate the amount and cost of RMC by means of these numeri...

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Construction and demolition waste indicators

Cited by 168 publications

References 20 publications

Thermal Performance of Concrete with Recycled Aggregates from CDW Plants

Thermal Performance of Concrete with Recycled Aggregates from CDW Plants

Anticipating urban mining

Fresh Ready-Mixed Concrete Waste in Construction Projects: A Planning Approach

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