Context:

The use of construction and demolition waste - CDW, is part of the management that allows us to mitigate environmental pollution and reduces the impact caused by the extraction of natural aggregates. The sector of construction industry has launched aims of implementation of “3R - reduce, reuse and recycle” methodology and “Cleaner production” for the CDW processes; being in Colombia, a sector with annual growth of 13%, which increases the available.

Method:

It was required to establish a comparative particle size analysis between aggregate natural and recycled, which allowed to identify from the technical point of view, similarities and differences between parameters established in the Colombian technique standard NTC 174 (specifications for aggregates in concrete production). Samples of recycled aggregates were taken from artisanal dumps of Bogotá D.C.; and samples of natural aggregates, obtained from the commercial sector in the city.

Results:

We obtained grain size curves of the aggregates regarding the limits set by the standard NTC 176. Achieving determines that the CDW do not comply with the normative specifications of the concrete. However it is possible to use as aggregate for concrete structural, no sustainable modular manufacturing.

Conclusions:

It is needed an assessment and grading comparison of the aggregates to establish that the residuals are reused as raw material: promoting an environmental policy that suggests use as a sustainability strategy in social settings.