Preprint Article Version 1 This version not peer reviewed

Fundamentals of the Behavior of Concrete Recycled with PET Additives through Its Porosity

Version 1 : Received: 16 December 2016 / Approved: 16 December 2016 / Online: 16 December 2016 (11:01:40 CET)

A peer-reviewed article of this Preprint also exists.

Mendivil-Escalante, J.M.; Gómez-Soberón, J.M.; Almaral-Sánchez, J.L.; Cabrera-Covarrubias, F.G. Metamorphosis in the Porosity of Recycled Concretes Through the Use of a Recycled Polyethylene Terephthalate (PET) Additive. Correlations between the Porous Network and Concrete Properties. Materials 2017, 10, 176. Mendivil-Escalante, J.M.; Gómez-Soberón, J.M.; Almaral-Sánchez, J.L.; Cabrera-Covarrubias, F.G. Metamorphosis in the Porosity of Recycled Concretes Through the Use of a Recycled Polyethylene Terephthalate (PET) Additive. Correlations between the Porous Network and Concrete Properties. Materials 2017, 10, 176.

Journal reference: Materials 2017, 10, 176
DOI: 10.3390/ma10020176

Abstract

In the field of construction, materials referred to as sustainable are currently undergoing a process of technological development. This study aims to contribute to the understanding of the behavior of the fundamental properties of concretes prepared with recycled coarse aggregates that incorporate in their matrix a polyethylene terephthalate-based additive in an attempt to reduce their high porosity. Techniques to measure the gas adsorption, water porosity and x-ray diffraction (XRD) were used to evaluate the effect of the additive on the physical, mechanical and microstructural properties of these concretes. Porosity reductions of up to 30.60% are achieved with the addition of 1, 3, 4, 5, 7 and 9% of the additive, defining a new state in the behavioral model of the additive (the overdosage point) in the concrete matrix; in addition, the porous network of these concretes and their correlation whit other physical and mechanical properties are also explained.

Subject Areas

PET additives; recycled concrete; concrete porosity; polymeric resins; porosimetry of nitrogen (N2) gas adsorption; acoustic resonance spectroscopy

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