Abstract
This paper proposes a solution to the current problems of Mexico City (Ciudad de México) with respect to construction and demolition waste, through a spatial analysis to locate a waste treatment and disposal infrastructure. Two analysis methodologies, specifically the multi-criteria evaluation technique and network analysis, are used with the support of geographic information systems. The results of the multi-criteria evaluation technique indicate that the most suitable places for this infrastructure location are in the south and southeast of the study area, in the Tlalpan, Milpa Alta, Xochimilco and Cuajimalpa boroughs. The results of the network analysis technique indicate that four facilities strategically located in Miguel Hidalgo, Gustavo A. Madero, Tlahuac and Tlalpan boroughs would permit the provision of service to almost all waste generation points in the study area. Decision makers in Mexico City can use either of the two approaches. If the objective is to find the best location of a single place for the treatment or disposal of huge amounts of waste, the results obtained with the multi-criteria evaluation technique should be used. On the other hand, if waste treatment is favored over final disposal, decision makers should use the results of the network analysis technique.
Highlights
The construction sector is an essential part of the world economy, because infrastructure promotes production and employment
The Multi-Criteria Evaluation (MCE) emplacement approach focuses on locations allowing a permanently operating infrastructure giving service to a large territorial extension, so that large amounts of Construction and Demolition Wastes (CDW) can be treated and deposited in one place
This paper proposed a solution to the CDW handling problem in MXCD, through a spatial analysis to determine where to best locate CDW treatment and final disposal infrastructure
Summary
The construction sector is an essential part of the world economy, because infrastructure promotes production and employment. Civil works such as buildings, roads, bridges, railways, ports, airports and others, are important sources of capital income and significant urban components [1]. In developed countries or regions such as the UK, the United States, Australia or Hong Kong, the construction sector may account for 4.0 to 10.0% of the Gross Domestic Product (GDP), while in developing countries, it may represent between 3 and 6% [2,3,4,5]. In Mexico, this sector represented 6.7% of GDP in 2011, generated around 5.6 million jobs, and positively impacted 63 of the 73 productive branches [6]. Several types of damage are usually caused, such as changes in land use, the pollution of surface waters, generation of greenhouse gases, noise, dust and Construction and Demolition Wastes (CDW) [8,9,10,11]
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