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Sustainable Development

Industrial Ecology

Concrete enables sustainable industries

In a nutshell, industrial ecology means the closing of life cycles so that waste streams become feedstocks, either for the same industry or for another.


Applications


Concrete Recycling

When separated from other building materials, concrete can be crushed and reused as aggregates.

Resulting benefits of concrete recycling include:

  • Reduce waste.
  • Substitution for primary aggregates.
  • Reduce transportation and disposal costs.
Alternative Raw Materials

The cement that is used to make concrete contains various ingredients; the most important is clinker, the production of which is CO2 intensive.

Alternative cementitious materials, such as fly ash, pozzolana and slag, are substituted for traditional clinker reducing environmental impacts in the production stage.

Alternative Fuels

Alternative fuels such as tires, biomass, and household waste, are increasingly used in manufacturing processes, reducing the use of fossil fuels while recovering energy from society's waste.

This also reduces CO2 emissions from cement production, as these fuels are often much less CO2 intensive than fossil fuels.

CO2 Capture

During its lifetime and in a demolition phase, concrete captures back CO2 that will remain embedded in recycled aggregates used in new structures.

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