Influence of natural aggregates typology on recycled concrete strength

Laserna Arcas, Santiago Eduardo; Montero Martínez, Jesús

Influence of natural aggregates typology on recycled concrete strength

2016

Laserna Arcas, Santiago Eduardo | Montero Martínez, Jesús

This paper reports a study on recycled aggregates concrete to analyze the influence of using two different types of natural aggregates, river aggregates and crushed aggregates, on the strength properties of recycled aggregates concrete. A total of twenty different mixes were analyzed with an effective water/cement ratio of 0.5 and cement contents of 260?300?340 kg/m3 for recycled rates of coarse aggregates of 0?20?50?100%. The results show that the strength property depends of the type of natural aggregate used and of the recycled replacement ratio. An increment of 15% on compressive strength was obtained for river natural aggregates and 100% recycled replacement ratio, while a decrease of approximately 10?25% was observed for mixtures with crushed natural aggregates performed under similar manufacturing conditions.

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