b655f53986d3be46a5a2be3505452573 pmc_28772540.pdf 604f6bdf4c4dc144b6e0df9aab7c8beda0eb112f pmc_28772540.pdf Title: 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 Subject: In the field of construction, sustainable building materials are currently undergoing a process of technological development. This study aims to contribute to understanding the behavior of the fundamental properties of concretes prepared with recycled coarse aggregates that incorporate a polyethylene terephthalate (PET)-based additive in their matrix (produced by synthesis and glycolysis of recycled PET bottles) in an attempt to reduce their high porosity. Techniques to measure the gas adsorption, water porosity, Fourier transform infrared spectroscopy (FTIR) 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 with other physical and mechanical properties are also explained. Keywords: PET additives; recycled concrete; concrete porosity; polymeric resins; porosimetry of gas adsorption; acoustic resonance spectroscopy Author: José Miguel Mendivil-Escalante, José Manuel Gómez-Soberón, Jorge Luis Almaral-Sánchez and Francisca Guadalupe Cabrera-Covarrubias Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.15 CreationDate: Wed Feb 15 02:17:42 2017 CET ModDate: Wed Feb 15 02:17:42 2017 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 19 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 7378054 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- XOPQLV+URWPalladioL-Ital Type 1 Custom yes yes no 64 0 URLRSN+URWPalladioL-Bold Type 1 Custom yes yes no 65 0 VIZRIQ+URWPalladioL-Roma Type 1 Custom yes yes no 66 0 YOTXCC+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 71 0 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