Bibliographic citations
Navarro, H., Rayme, J. (2021). Elaboración del concreto poroso con fibra de polipropileno como alternativa para reducir la contaminación sonora causada por la interacción del neumático y la calzada aplicado en la avenida San Luis, distrito de San Borja [Tesis, Universidad Peruana de Ciencias Aplicadas (UPC)]. http://hdl.handle.net/10757/656331
Navarro, H., Rayme, J. Elaboración del concreto poroso con fibra de polipropileno como alternativa para reducir la contaminación sonora causada por la interacción del neumático y la calzada aplicado en la avenida San Luis, distrito de San Borja [Tesis]. PE: Universidad Peruana de Ciencias Aplicadas (UPC); 2021. http://hdl.handle.net/10757/656331
@misc{renati/1290168,
title = "Elaboración del concreto poroso con fibra de polipropileno como alternativa para reducir la contaminación sonora causada por la interacción del neumático y la calzada aplicado en la avenida San Luis, distrito de San Borja",
author = "Rayme Quiroz, Jhon Charly",
publisher = "Universidad Peruana de Ciencias Aplicadas (UPC)",
year = "2021"
}
This document describes the fabrication of a polypropylene fiber (CPF) porous concrete. This material is proposed as an alternative to reduce noise pollution caused by the interaction between the tire and road. The proposal consists of two stages of study: Preparation of a porous concrete and acoustic evaluation using a microstructural mathematical model. In the first stage, sixteen designs were evaluated, of which twelve samples were made from each mixture and subsequently subjected to the compression resistance test. Thus, a total of 192 specimens were obtained, which were evaluated at 7, 14 and 28 days of curing time. The designs are composed of aggregates recommended by ACI 522R, aggregates of HUSO 8 and aggregates of HUSO 67, of which it is intended to select a porous concrete that can meet the minimum specifications of a pavement while maintaining an optimal percentage of voids for its subsequent evaluation. acoustics. The influence of porosity and void percentage on the mechanical properties of concrete was studied from the designs obtained. In this way, a suitable CPF dosage was found for the proposal with a water-cement ratio of 0.36, type I fiber, 0% additive and HUSO 8 stone, with which a compressive strength of 296.37 kg / cm2, with which the minimum strength requirements of concrete for its application to a pavement were met. In the second stage, it is intended to obtain results of the acoustic absorption coefficient by means of a numerical simulation based on the microstructural theory of Neithalath. This model was applied to the CPF designs obtained in the first part, taking into account the size, shape of the aggregates and the ratio of voids. The development of this mathematical model and its correlation with physical measurements allow the prediction of the maximum acoustic absorption coefficient of a CPF based on the geometric characteristics of the pore structure. The optimal designs submitted to the numerical simulation obtained a sound absorption coefficient of 0.79 and 0.63 for aggregates of HUSO 8 and HUSO 67 respectively. In this way, with the investigation and experimentation, it was concluded that the CPF allows to reduce the noise generated by the interaction of the tire and the road, which verified a new benefit of porous concrete in pavement engineering.
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