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Traditional cement building generates abundant construction wastes during construction and waste transportation. Thus, it incurs high building resource consumption, low building efficiency, and frequent occurrence of safety accidents, which result in relatively low utilization ratio of building resources and relatively serious environmental pollution pressure. A prefabricated building can save building materials and energies and decrease construction waste emission; it is also an essential choice when the construction industry develops to a high level in a country. A case study based on a residential project in Henan Province, China was carried out. Firstly, studies concerning the environmental benefits of prefabricated building in foreign developed countries were reviewed. Second, the types of environmental damage from cement building were summarized. Third, an evaluation index system of environmental benefits of the prefabricated building was established. Finally, environmental benefit scores in the case study were calculated using the fuzzy comprehensive evaluation method based on the analytic hierarchy process. Results demonstrated that prefabricated building is extensively applied in Europe. Traditional cement buildings bring various types of environmental pollution, including water, solid waste, and dust pollutions and vegetation damage. In a case study, the environmental benefits of the prefabricated building are assessed at a good level close to excellent. Environmental benefits of the prefabricated building can be improved by encouraging real estate developers to adopt prefabricated building. In this manner, the installation efficiency of mechanical devices and construction efficiency can be increased, and the construction safety of projects can be improved. Research conclusions can provide references not only for the government to formulate policies in favour of prefabricated building development and measures for reducing environmental pollutions but also for the construction industry to enrich benefit evaluation systems for prefabricated building projects. This study is highly important in the realization of green sustainable development in the construction industry.

nature, environment and pollution technology/nature, environment and pollution technology

Estimation of Environmental Damages of Cement Building and Environmental Benefits of Prefabricated Building: A Case Study Based on a Residential Project in Henan Province, China