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Título
Pre-Saturation Technique of the Recycled Aggregates: Solution to the Water Absorption Drawback in the Recycled Concrete Manufacture
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Materials
Número de la revista
9
Datos de la obra
García González, J.; Rodríguez Robles, D.; Juan Valdés, A.; Morán Del Pozo, J. M.; Guerra Romero, M. I. (2014). Pre-Saturation Technique of the Recycled Aggregates: Solution to the Water Absorption Drawback in the Recycled Concrete Manufacture. Materials, 7, 6224-6236(9), https://doi.org/10.3390/MA7096224
Editor
MDPI
Fecha
2014
Resumo
The replacement of natural aggregates by recycled aggregates in the concrete
manufacturing has been spreading worldwide as a recycling method to counteract the large
amount of construction and demolition waste. Although legislation in this field is still not
well developed, many investigations demonstrate the possibilities of success of this trend
given that concrete with satisfactory mechanical and durability properties could be
achieved. However, recycled aggregates present a low quality compared to natural
aggregates, the water absorption being their main drawback. When used untreated in
concrete mix, the recycled aggregate absorb part of the water initially calculated for the
cement hydration, which will adversely affect some characteristics of the recycled
concrete. This article seeks to demonstrate that the technique of pre-saturation is able to
solve the aforementioned problem. In order to do so, the water absorption of the aggregates
was tested to determine the necessary period of soaking to bring the recycled aggregates
into a state of suitable humidity for their incorporation into the mixture. Moreover, several
concrete mixes were made with different replacement percentages of natural aggregate and various periods of pre-saturation. The consistency and compressive strength of the concrete
mixes were tested to verify the feasibility of the proposed tech
Materia
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