Study of the effect of the rice husk ash (RHA) and waste rubber tire in the concretes composition

• Grant number: 12/02903-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2012
• End date: May 31, 2013
• Field of knowledge: Applied Social Sciences - Architecture and Town Planning - Architecture and Urbanism Technology
• Principal Investigator: Jorge Luís Akasaki
• Grantee: André Henrique Tamos Gomes
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

The reuse of wastes is increasing, including in the civil construction. Several works are being done with the purpose of developing new products for the cement industry, among them the utilization of rubber tire waste and rice husk ash (RHA) in the concrete composition. This project aims to study the influence of substitution of 10% in volume of rubber tire waste for fine aggregate, simultaneously to the substitution of 5, 10 and 15% of RHA in the cement. There will be a concrete mixture taken as reference; this one won't have any substitution. In the dosage of concrete, it will be utilized a polycarboxylate-based superplasticizer, aiming to obtain a reduction of water-cement ratio and approach the compressive strength to the common concrete. Tests like the slump test and axial compression tests, following the ABNT (Brazilian Technical Standards Association) will be held. (AU)