Ingeniería Civil y Mecánica

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Correlación entre el CBR, DCP, propiedades índice y mecánicas en suelos de la parroquia Poaló del cantón Latacunga, provincia de Cotopaxi
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2023-08) Soria Guzman, Romel Stalyn; Aldás Sánchez, Milton Rodrigo
The parish of San José de Poaló, being in the rural area of the Latacunga canton, province of Cotopaxi, has a low development in the road infrastructure, having roads in very poor condition of the asphalt folder or need improvement since they are ballast or paved, which the inhabitants of the area, being mostly farmers and ranchers, find it difficult to transport their products for sale. The experimental work consisted of locating in the area of the parish the most representative roads which cover a large part of it, where 4 third-order roads were established where a total of 12 samples of 50 kg were extracted, later at each point the DCP and field density tests were carried out. In the laboratory, through the use of the necessary equipment and tools, the properties of the index and mechanical soils were determined, as well as the Modified Proctor and CBR to expand the database of the correlations of the soils in the area using simple and multiple correlation methods, in addition to the aforementioned results, they were used in the design of a flexible pavement following the AASTHO 93 standard. As results, 20 simple and multiple correlations were obtained where they had a coefficient of determination greater than 50 percent, being accepted, later with the use of the free software AASHTO 93, the thicknesses were calculated obtaining: 7.50 cm asphalt layer, 15 cm base, 20 cm subbase.
Desarrollo de un software para el diseño de mezclas asfálticas y diseño de pavimentos flexibles mediante la aplicación del método Marshall y método AASHTO 93
(Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil, 2026-07-05) Sánchez Acosta Alex Santiago; Portilla Yandún Favio Paúl; Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil
This paper presents the development of software called PaveSuite Pro for the design of asphalt mixtures using the Marshall method and the design of flexible pavements using the AASHTO 93 methodology, with the aim of optimizing the accuracy, efficiency, and accessibility of these processes in both academic and professional settings. PaveSuite Pro was developed in Python and is structured in two modules. The asphalt mixture module organizes the process into six sequential tabs where the user enters laboratory data, and the program calculates volumetric properties, generates the six Marshall design charts, and determines the optimum asphalt content. The flexible pavement module calculates the equivalent design axle loads using the truck factor method, solves the AASHTO 93 equation using an iterative bisection algorithm, interpolates the equivalent load factors, and generates the cross-section of the structural pavement to scale. Both modules allow saving projects in JSON format and exporting reports in PDF format. To verify the software's functionality, laboratory tests were performed using aggregates from the Kumochi quarry, Ambato canton, and AC-20 asphalt cement. The optimum asphalt content was 5.93%, with a stability of 1587 lb, a flow of 12.93 (1/100"), 3.09% air voids, and 14.87% maximum allowable volume (MAV). The pavement design yielded a required structural number (SN) of 3, with thicknesses of 10 cm for the asphalt surface course, 15 cm for the granular base course, and 15 cm for the granular subbase, resulting in an actual SN of 3.44. A comparison between manual results and those generated by the software showed differences of less than 5% in all parameters, confirming the program's accuracy. It is concluded that PaveSuite Pro correctly automates both procedures in accordance with current INEN, ASTM, and AASHTO standards, and constitutes a free-access tool adapted to the Ecuadorian regulatory context for students and professionals of the Faculty of Civil and Mechanical Engineering at the Technical University of Ambato.
Diseño de la estructura del pavimento flexible de la vía Pacto - El Paraíso, perteneciente a la parroquia rural Pacto, distrito metropolitano de Quito
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2022-03) Martínez Camacho, Enrique Ignacio; Pérez Maldonado, Ruth Lorena
In the present study, the vehicle count was carried out for the determination of the TPDA manually, this vehicle analysis was carried out for 7 consecutive days, from 6:00 a.m. to 6:00 p.m. with a total of 12 hours, counting the cars in intervals of 15 minutes, from September 20 to 26, 2021, values that were calculated for current vehicular traffic and projected twenty years. Soil studies were carried out, with the extraction of ten altered samples that later, with care not to disturb the moisture content, the required tests were carried out in the laboratory with the aim of obtaining the granulometry, the limits of Atterberg that contains the liquid limit, plastic limit and plastic index, Modified Proctor and California Support Ratio (CBR) of the subgrade, by means of the AASHTO-93 regulation it was possible to calculate and know the thickness of the optimal asphalt structure for the volume of raised traffic for a design period of two decades. The structure of the flexible pavement was designed to determine the thickness of the sub-base and base from the rural parish of Pacto to the El Paraíso community, minimizing the detrimental impacts of urbanization processes in order to establish activity areas capable of transforming their economy in a sustainable way, favoring public and private transport, focused on strengthening the parish through tourism incentives and the conservation of flora and fauna.
Diseño geométrico y estructural de la vía que une el anillo vial con el sector San Isidro, desde la abscisa 0+000 hasta la 4+000, perteneciente al barrio Rumipamba de Navas, parroquia San Miguel del cantón Salcedo, provincia de Cotopaxi
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2024-08) Quinatoa Yánez, Fabricio Saul; Aldas Sanchez, Milton Rodrigo
This project focuses on the geometric and structural design of a road in the rural neighborhood of Rumipamba de Navas, Salcedo canton, Ecuador. The need for this project arises from the poor current condition of the road, which does not comply with the widths and requirements established by current Ecuadorian road standards. This situation limits the mobility of the inhabitants and the accessibility to the sector. For the geometric design of the road, a complete topographic study was carried out, thus determining the orographic characteristics and the extension of the project. Additionally, a traffic study projected for 20 years was carried out, allowing the geometric characteristics of the road to be established, such as road width, curvature radii and slopes. Regarding the structural design of the flexible pavement, soil tests were carried out, the AASHTO 93 method was used to determine the optimal structure of the wearing layer, guaranteeing adequate resistance and durability of the pavement against the expected vehicular loads. Finally, a price analysis was carried out to determine a reference budget and estimate the investment required for the project. The design of this new road in the Rumipamba de Navas rural neighborhood will improve the mobility of the inhabitants and the accessibility to the sector. The project has been developed following current Ecuadorian road regulations. Obtaining as a result a future TPDA of 726 vehicles per day, a 10 m wide road including shoulders and ditches, finally the final structure of this consists of 15 cm of subbase, 15 cm of base and 5 cm of wearing layer.
Mejoramiento del camino vecinal pista Hualino - Selva Alegre, ubicado en la Parroquia Simón Bolívar de la Provincia de Pastaza
(Ingeniería Civil y Mecánica. Carrera Ingeniería Civil, 2025) Montúfar Guevara Javier Andrés; Cañizarez Proaño Byron Genaro
Understanding that it is important to improve the national road network to ensure the transportation and supply of goods. Historically, the Ministry of Public Works and governmental entities have concentrated on building and maintaining the first and second order roads that connect the main cities and municipal capitals, ignoring the third order roads, which are the basis of the entire transportation infrastructure network. Researches such as the present one are proposed with the objective of improving the Pista Hualino - Selva Alegre road, located in the Simón Bolívar Parish of the Pastaza Province. It is intended to meet this objective through the design parameters survey, including information on traffic, soil and topography of the area, as well as the improvement of the pavement based on AASHTO 93 standard. The research determined the traffic in number of accumulated equivalent axles (W18 design) of 51,341, obtaining the design consisting of the following thicknesses: subbase layer = 16.1 cm, base layer = 5.1 cm and asphalt binder = 4.3 cm. In addition, a reference budget summarizing the total cost of the work is detailed, which is broken down into different items.