Ingeniería Civil y Mecánica

Permanent URI for this communityhttp://repositorio.uta.edu.ec/handle/123456789/898

Browse

Subject: search.filters.subject.ENSAYO CBR

Search Results

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Correlación entre el CBR y las propiedades índice y mecánicas en suelos granulares, de las parroquias pasa y San Fernando, cantón Ambato, provincia de Tungurahua
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2020) Claudio Chacón, Karina Marisela; Portilla Yandún, Favio Paúl
    This Experimental work, aims to correlations development between CBR Laboratory tested. (California Bearing Ratio) and Soil’s Mechanical and Properties Index from “Pasa” and “San Fernando” (parishes closer to Ambato City). I have taken 12 samples: 6 from each parish located in 3 different roads choose by the investigator, every sample have enoguh amount of material for testing procedures in the Lab. Once completed, we obtained the Analysis Results for its interpretation allowing to determinate Soil Types and its characteristics. In the Determination process for correlations between two rates, we applied Analysis by Regression, and for the correlation between three different rates we used the Minimun Squared Method (MCO) so The Correlation is aceptable if its Coefficient Determination is higher than 50 percent. As a result we obtained 27 correlations with a Coefficient Determination ranges between 50 percent – 96.13 percent this results subsecuently allowed us to obtain the CBR quite close to the Laboratory Tested CBR Results. So the Required Flexible Pavement Design Thickness in each Capes are the same ones.
  • No Thumbnail Available
    Item
    Análisis de las correlaciones entre propiedades índice y mecánicas con la resistividad eléctrica de suelos granulares en la zona 2 de la ciudad de Ambato
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2020) Tenecota Paredes, Esteban Wladimir; Portilla Yandún, Favio Paúl
    At the beginning of the project, information was researched on preliminary microzonation studies, with the objective of use selected points of these works and corroborating the information presented to have a starting point. A macro project was established to cover 4 areas of the city of Ambato and increase the sample size of the research. To get started the technical part, a route view was made identifying the 40 points selected for the trials, which 10 were divided for each area. The tests were carried out in the field and in turn samples were taken of the points destined to perform laboratory tests contemplating the index and mechanical properties. With the results obtained through the tests, the information was processed by software using the least squares statistical system for the formation of regressions and correlations, which served to establish simple and multiple correlations. The main subjects to form variables were the index and mechanical properties, the electrical resistivity and the California Bearing Ratio (CBR) test. Correlation coefficients that meet more than 50 percent were selected and found, coefficients did not reach this value were discarded. Finally, 30 correlations were selected having values of correlation coefficients R2 ranging from 50 to 92 percent, indicating that the electrical resistivity method is a trustworthy, efficient and economical option to evaluate properties of granular soils.
  • No Thumbnail Available
    Item
    Implementación del proceso de conservación de la estructura de la capa de rodadura de la vía Cevallos - Mocha en el tramo km 4 + 960 hasta km 9 + 920 de la provincia de Tungurahua.
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2019) Saquinga Pullupaxi, Betty Liliana; Aldás Sánchez, Milton Rodrigo
    The objective of this experimental work is to implement a process of conservation of the structure of the running layer of the Cevallos - Mocha road in the section km 4 + 960 to km 9 + 920 of the province of Tungurahua, in order to obtain data of the current state of the road. Initially a georeferenced survey was carried out with the help of a total station, where length, width, gutters, water passages and sections of the existing road were identified. To know the amount of vehicular traffic, a manual count of each type of vehicle was registered, during a period of one week eleven consecutive hours to obtain the Annual Average Daily Traffic (ADT). Subsequently a pit was made every kilometer to be able to extract altered soil samples and perform laboratory soil tests such as granulometry, Atterberg limits, compaction and California Support Index (CBR) test. Also the evaluation of the Condition Pavement Index (PCI) where we identify the amount and severity of the damages located in the road surface. Finally, the Benkelman Beam test was carried out where the pavement deflections were obtained. Additionally, tables, graphs and abacuses were made that allowed us to interpret the results obtained. The abscissas, sections and units evaluated are identified in the attached plans.
  • No Thumbnail Available
    Item
    Implementación del proceso de conservación de la estructura de la capa de rodadura de la vía Cevallos - Mocha en el tramo km 0 + 000 al km 4 + 960 de la provincia de Tungurahua.
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2019) Álvarez Tapia, Denisse Alejandra; Aldás Sánchez, Milton Rodrigo
    The purpose of this study is to implement a process of conservation of the structure of the rolling layer of the Cevallos - Mocha road in the section Km 0 + 00 to Km 4 + 960 of the province of Tungurahua, with the purpose of generating data that they can be useful in the near future, after determining the current conditions of the road; in such a way that the document is the starting point to carry out more research in favor of a substantial improvement for those who travel daily in this way. A road inventory of its components was carried out in the first instance, such as: the width, presence of sidewalks, gutters, wells, water passages and street intersections. Next, vehicular traffic was recorded dividing into two sections, the one comprising the abscissas Km 0 + 000 to 2 + 120 and the other from Km 2 + 120 to 5 + 000, because the vehicular mobility is different and had a duration of 12 hours per day for a week for each section; in order to obtain the annual average daily traffic (TPDA). Laboratory tests were then performed with altered samples taken from the site as granulometry, Atterberg limits, compaction test and CBR assay. As well as studying the pavement condition index (PCI) to find the damage of the tread layer. Finally, I test with the Benkelman beam to know the deflections that occur in the track. These procedures have been summarized in tables, which facilitate the interpretation of the results obtained. Geo-referenced plans of the topographic survey of the road are also attached.