Keywords
Construction and demolition debris
recycled aggregates
natural aggregates
Portland cement concrete
self-compacting concrete Residuos de la construcción y demolición
agregados reciclados
agregados naturales
concreto de cemento portland
concreto autocompactante
recycled aggregates
natural aggregates
Portland cement concrete
self-compacting concrete Residuos de la construcción y demolición
agregados reciclados
agregados naturales
concreto de cemento portland
concreto autocompactante
How to Cite
Robayo Salazar, R. A., Mattey Centeno, P. E., Silva Urrego, Y. F., & Delvasto Arjona, S. (2014). Fresh and hardened behavior of a self compacting concrete added with coal slag and made with coarse aggregate from recycled concrete. Informador Tecnico, 78(2), 128–139. https://doi.org/10.23850/22565035.96
Abstract
The steady growth of remodeling, demolition, and in general the construction activity in the populous cities generate large volumes of waste from demolished concrete, which now have become a serious problem of environmental pollution. Furthermore, given the global need to increase efficiency in the consumption of materials and energy, it is imperative to study the recycling of the materials, especially as in the case of concrete, which today, is the material most produced per year in the world, and one of the greatest contributors to a negative impact on the environment. In this sense, this research evaluates the effect of partial and total replacement of natural aggregates by recycled aggregates obtained from the crushing of construction waste and demolition on the behavior in fresh and hardened state of a self-compacting concrete. The results showed that the incorporation of these recycled aggregates did not significantly affect the behavior of the fresh blends, but instead does have an influence on the behavior of the hardened concrete causing a decrease of the compressive strength between 15% and 29 % depending on the percentage of natural aggregate that was replaced by the recycled one (25, 50, 75 and 100 %). In addition, it was observed a slight increase in the amount of permeable pores depending on the amount of natural aggregate that was replaced by the one recycled.
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Copyright (c) 2019 Servicio Nacional de Aprendizaje (SENA)
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