Análisis comparativo de hormigones con resistencia de 35 y 21 MPa utilizando materiales de cantera de Santo Domingo de los Tsachilas y Portoviejo
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2019-09
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Universidad de Guayaquil- Facultad Ciencias Matemáticas y Físicas- Carrera de Ingeniería Civil
Resumen
El presente trabajo de investigación se realizó con el fin de elaborar un análisis comparativo entre un nuevo material que está siendo comercializado en la provincia de Manabí llamado Roca-Arena, el cual es extraído de cantera Picoazá ubicada en la cuidad de Portoviejo, con la finalidad de comprobar que tan propicio es realizar hormigones de resistencia de 35 y 21 MPa, las cuales son utilizadas para la elaboración de pavimentos rígidos y obras de artes en carreteras de la provincia. El material Roca-Arena surge de la necesidad de reducir los espacios de acopio en obra, así como también reducir los gastos en transporte, debido a que este material es una mezcla pre elaborada combinado agregados finos y gruesos listos para ser utilizada en la dosificación según la resistencia del hormigón que se requiera.
Debido a la demanda que tiene en la provincia de Manabí y la poca información que existe de dicho material, da la necesidad de realizar ensayos de laboratorio y un análisis comparativo de resistencia con otro material extraído de la cantera de la cuidad de Santo Domingo, con la finalidad de observar el comportamiento que tendrá este nuevo material. Se elaboró la dosificación para hormigones con dos resistencias diferentes usadas en obras viales, las cuales fueron sometidas a diferentes ensayos para así verificar si la dosificación es la correcta para obtener la resistencia deseada, obteniendo mejores resultados con los especímenes elaborados con material de la mina de Copeto. Según el análisis comparativo entre ambos materiales se comprobó que es satisfactorio realizar hormigones con este material denominado Roca-Arena.
The present research work was carried out in order to elaborate a comparative analysis between a new material that is being commercialized in the province of Manabí called Roca-Arena, which is extracted from Picoazá quarry located in the city of Portoviejo, with the purpose of verifying that it is so propitious to make resistance concretes of 35 and 21 MPa, which are used for the elaboration of rigid pavements and works of art in highways of the province. The Roca-Arena material arises from the need to reduce the storage spaces on site, as well as to reduce transport costs, since this material is a pre-built mixture of fine and thick aggregates ready to be used in the dosage according to the resistance of the concrete required. Due to the demand that has in the province of Manabí and the little information that exists of this material, gives the need to make laboratory tests and a comparative analysis of resistance with another material extracted from the quarry of the city of Santo Domingo, with the purpose of observing the behavior that this new material will have. It was elaborated the dosage for concretes with two different resistances used in road works, which were submitted to different tests to verify if the dosage is the correct one to obtain the desired resistance, obtaining better results with the specimens elaborated with material of the Copeto mine. According to the comparative analysis between both materials it was proved that it is satisfactory to make concretes with this material called Roca-Arena.
The present research work was carried out in order to elaborate a comparative analysis between a new material that is being commercialized in the province of Manabí called Roca-Arena, which is extracted from Picoazá quarry located in the city of Portoviejo, with the purpose of verifying that it is so propitious to make resistance concretes of 35 and 21 MPa, which are used for the elaboration of rigid pavements and works of art in highways of the province. The Roca-Arena material arises from the need to reduce the storage spaces on site, as well as to reduce transport costs, since this material is a pre-built mixture of fine and thick aggregates ready to be used in the dosage according to the resistance of the concrete required. Due to the demand that has in the province of Manabí and the little information that exists of this material, gives the need to make laboratory tests and a comparative analysis of resistance with another material extracted from the quarry of the city of Santo Domingo, with the purpose of observing the behavior that this new material will have. It was elaborated the dosage for concretes with two different resistances used in road works, which were submitted to different tests to verify if the dosage is the correct one to obtain the desired resistance, obtaining better results with the specimens elaborated with material of the Copeto mine. According to the comparative analysis between both materials it was proved that it is satisfactory to make concretes with this material called Roca-Arena.
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Análisis Comparativo, Hormigón, Pavimento Rígido, Ensayos, Agregados