Las mezclas de concreto y sus resultados en la ciudad de Tarapoto utilizando el método del agregado global y módulo de Finura

• Autor: Gonzales García, José Luis
• Formato: tesis de grado
• Fecha de Publicación: 2003
• Institución: Universidad Nacional de San Martin - Tarapoto
• Repositorio: UNSM-Institucional
• Lenguaje: español
• OAI Identifier: oai:repositorio.unsm.edu.pe:11458/323
• Enlace del recurso: http://hdl.handle.net/11458/323
• Nivel de acceso: acceso abierto
• Materia: concreto; |Tarapoto; |método; |agregado global; Finura

The idea of ​​developing this thesis comes from my concern to see that in the city of Tarapoto continues indiscriminately using concrete quarry Cumbaza River, knowing that the coarse aggregate does not meet the minimum mechanical strength requirements for its use specifically stipulated by NTP 400,037. Given this reality and having reference to previous studies on this quarry, this work It aims to present a design alternative mixtures based on the combination of aggregates quarries Cumbaza River and Rio Huallaga, so that we can replace the poor quality stone by stone River Cumbaza good quality River Huallaga, and more satisfactory results obeying the limitations ele NTP. for aggregates The level chosen for the development ele this thesis is the "Method Added Global and Module Fineness "which is based on an experimental procedure, and impinges more optimization global aggregate grain size, (mixture of fine and coarse aggregate). And your application has limitations, since we can work with fine aggregate whose modules are by Finesse below permitted by most tables on mix design, and whereas the Cumbaza River quarry is characterized by low Fineness modules, this method is the recommended. This is mainly arises first determine the particle size mix more suitable stone using 1-Iuallaga River and river sand and with this elaborate Cumbaza Test specimens for three different ~ vlódulos of Finesse Global, and three relationships (Water / cement), so that to define module for Global Fineness and ratio (water / cement) are obtained more satisfactory concrete. The main statistical model used is non regression line (to correlate experimentally Compressive Strength Vs. The water Cement this purpose to determine the degree of variability between the values ​​found experimentally, and those established by the ACI Committee 211, and IMCYC (Institute Mexican Cement and Concrete). to design concrete mixes. The hypothesis was true, since it was shown that the proposed method had substantial advantages compared to thin ACI method, especially when working with aggregates low resistance and poor particle size distribution, which is the reality of our medium, and forcing us to seek alternative design by dosing methods that allow us to optimize quality by combining aggregate quarries, and this can reduce these deficiencies. The application of this method allowed us to determine on technical grounds the combination more these two quarries suitable for use specifically with this combination we having an overall aggregate of good mechanical strength, • this given by the presence of the Stone Huallaga River, and on the other hand an acceptable overall particle size distribution. The granulometric resistant optimization we obtained by mixing these two quarries allowed us to obtain very acceptable results, as it came to strengths considerable quantities of lower compression cement those generally used in our midst. For these reasons I hope this thesis strva as another contribution in advancing and Improving Local Concrete Technology, wishing that the knowledge acquired be implemented, since only then can we achieve a significant advance in this branch of Civil Engineering.