The demand for industrial and civil construction is growing constantly, and the main reason is the increase in the global population. The world’s most widely used building material is concrete, the product of mixing mineral aggregates, cement, water and additives. The number of mineral aggregate quarries will increase in proportion to the growth in the number of construction projects required, creating a significant problem for environmental protection in particular. Solutions are being sought to reduce the environmental impact of mineral aggregate mining and concrete manufacturing activity, and to reduce the amount of natural materials (e.g. mineral aggregates) used in construction. The most plausible solution identified by the researchers is the partial replacement of mineral aggregates with construction waste, thus promoting the use of environmentally friendly concrete, an approach we have included in this study. The aim of this project is to analyse the impact on environmental factors of the mineral aggregate concrete manufacturing activity, and the assessment of the environmental impact of the production process of ecological concrete from construction waste. The method adopted for environmental impact assessment is the use of the RIAM which can be defined as a matrix method specifically constructed for the assessment of impacts on anthropogenic and natural factors. The results show the environmental impact of the mineral aggregate mining process, and the positive and negative effects of replacing mineral aggregates with construction waste. The main conclusion of this study is that replacing mineral aggregates with construction waste significantly reduces the impact on environmental factors.

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Comparative Study on the Environmental Impact Assessment of Concrete Manufacturing Process with Mineral Aggregates

  • Elena Marica,
  • Mircea Sălcudean,
  • Maria Popa

摘要

The demand for industrial and civil construction is growing constantly, and the main reason is the increase in the global population. The world’s most widely used building material is concrete, the product of mixing mineral aggregates, cement, water and additives. The number of mineral aggregate quarries will increase in proportion to the growth in the number of construction projects required, creating a significant problem for environmental protection in particular. Solutions are being sought to reduce the environmental impact of mineral aggregate mining and concrete manufacturing activity, and to reduce the amount of natural materials (e.g. mineral aggregates) used in construction. The most plausible solution identified by the researchers is the partial replacement of mineral aggregates with construction waste, thus promoting the use of environmentally friendly concrete, an approach we have included in this study. The aim of this project is to analyse the impact on environmental factors of the mineral aggregate concrete manufacturing activity, and the assessment of the environmental impact of the production process of ecological concrete from construction waste. The method adopted for environmental impact assessment is the use of the RIAM which can be defined as a matrix method specifically constructed for the assessment of impacts on anthropogenic and natural factors. The results show the environmental impact of the mineral aggregate mining process, and the positive and negative effects of replacing mineral aggregates with construction waste. The main conclusion of this study is that replacing mineral aggregates with construction waste significantly reduces the impact on environmental factors.