Influencia del reemplazo de agregado natural por agregado de concreto reciclado, sobre las propiedades mecánicas del concreto, para el diseño de edificaciones

• Autores: Lozano Ojeda, Fernando Ciro, Sagastegui Calvanapon, Wilson Ernesto
• Formato: tesis de grado
• Fecha de Publicación: 2020
• Institución: Universidad Nacional de Trujillo
• Repositorio: UNITRU-Tesis
• Lenguaje: español
• OAI Identifier: oai:dspace.unitru.edu.pe:20.500.14414/16070
• Enlace del recurso: https://hdl.handle.net/20.500.14414/16070
• Nivel de acceso: acceso abierto
• Materia: Agregado de concreto reciclado

At present, construction and demolition residues (RCD) generated by formal and informal constructions have no intended use, and there is a diverse accumulation of these residues in public spaces and cultural patrimonies of the city and the country. In this way, investigating in the alternatives of reuse of the RCD to diminish the environmental contamination and to improve the quality of life of the living beings, the use of the recycled concrete aggregate (ACR) was raised as replacement of the natural thick aggregate for the elaboration of structural concrete, destining its use in the construction of buildings; finally, in the short term, to arrive to normar in the design of reinforced concrete. The purpose of the investigation was to determine the influence of the replacement of natural aggregate by ACR on the mechanical properties of the concrete, for this /cm2 purpose, a mixture design of 210 kg (ACI-211) was developed, using quarry aggregates of maximum size nominal 1/2”, coarse sand of 2,716 module and Pacasmayo cement type MS. Subsequently, 90 specimens were formed, using replacements of 15%, 25%, 35% and 45% of natural aggregate by ACR. Settling tests (ASTM C143) for fresh concrete and compressive strength (ASTM C39), flexural (ASTM C293) and adhesion (ASTM C900) tests for hardened concrete with 28 days of cure were then performed. It was then analyzed if the data is normally distributed with the Shapiro Wilk statistical test; then it was determined if there is a significant difference or homogeneity between the percentages analyzed, with the variance analysis test (ANVA) and Post Hoc analysis with the Tukey statistic; at 95% reliability. Finally, complementary tests of the aggregates were carried out according to the norm of the Ministry of Transportation and Communications (MTC) and used the Building Information Modeling (BIM) methodology to prepare a cost analysis for materials and drifts of a building based on conventional concrete and ACR replacement that increases its mechanical properties. Finally, it was concluded that the replacement of 25% of ACR by natural aggregate, significantly increases the mechanical properties of the concrete, obtaining a /cm2,/cm2 cm2; compressive strength of 248 kg flexion of 117 kg and adhesion of 64 kg/ in comparison to the results of the conventional concrete of compressive strength of cm2, cm2 cm2. 246 kg/at flexion of 113 kg/ and adhesion of 49 kg/