Revista ingeniería de construcción

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List of Papers (Total 20)

Desarrollo de hormigones con aglomerante cal-puzolana fina como material cementicio suplementario

The very high concrete strength and durability achieved in high and ultra-high-performance concrete is associated with a very dense matrix, accomplished through the use of high volumes of very fine mineral additions, such as fly ash, silica-fume, metakaolin and ground quartz sand. The paper reports on a study where a finely ground lime-pozzolan binder (LPB) is used as active...

Identificación y análisis de patologías en puentes de carreteras urbanas y rurales

A concern with a great number of bridges with significant pathological problems was the motivating factor to carry out this research. Small and medium size bridges have significant relevance for the economic and social development of the country, because they must ensure the transit of people, vehicles with raw material and local produce. However, the precarious conditions of...

Ampliaciones en viviendas sociales: Estudio de caso en Ivoti -Brasil

Social housing built in Brazil is often modified by users, usually soon after construction is finished, for both functional and economic reasons. Apparently, standard designs that public housing programs offer do not meet the needs of users. From this evidence, this study aims to examine a real situation and analyze changes made to social housing in the city of Ivoti, on southern...

Evaluación del comportamiento sísmico de viviendas de estratos marginales con cubiertas verdes: estudio de caso del municipio de Soacha, Colombia

The research group Science and Engineering of Water and the Environment and Social Program of the Faculty of Engineering (PROSOFI) of the Pontificia Universidad Javeriana proposed, for socially vulnerable population, green roofs based on covering the rooftop of houses with potentially productive vegetation. Taking into account that the inertial mass of the green roof could...

Resistencia a corte paralela a la tensión de la fibra de la madera, por medio de la prueba de punzonamiento propuesta

This research aims to propose a method for testing the shear strength of wood parallel to fiber and compare with other proposed methods. The method proposed by NBR 7190/1997 Brazilian Standard, that is similar to ASTM D 143-09/2010, the uses a rectangular prismatic specimen with an indentation to prevent its rotation, which it is caused by the asymmetry in the application of...

Reactividad puzolánica de arcillas caoliníticasuna revisión

Pozzolans have demonstrated to be highly efficient mineral additions in the concrete industry, because they reduce the environmental impact generated by the cement manufacture, improve the physical, chemical and mechanical properties of blends, and reduce costs. Calcined clays have been recognized as very good pozzolans, because they improve the durability and compressive...

Modelación numérica de vigas continuas de gran peralto de hormigón armado

This paper presents a study of the behavior of reinforced concrete continuous deep beams by numerical simulation, where results of the numerical analysis are calibrated and validated from existing experimental results in the international literature. In the modeling, a bilinear model is considered with Von Mises failure criteria for reinforcing steel and Concrete Damage...

Seguridad vial en carreteras rurales de dos carriles

This research was performed in order to evaluate road safety in rural two-lane roads of national interest in the province of Sancti Spíritus, from the method developed by Central University of Las Villas (UCLV); this study explores the accident rate, identifies the most dangerous sections and identifies risk factors in the most dangerous sections. This information will be used to...

Evaluación del comportamiento de vigas en voladizo de concreto reforzado con fibras ante la aplicación de cargas cíclicas

Conventional non-reinforced concrete is a brittle material with a low tensile strength and low strain capacity. To improve these mechanical properties of concrete, fibers have been used in the last decades in structural engineering applications in Colombia, South America. In this document, the authors present the mechanical behavior of cantilever beams built with three different...

Desempeño sísmico de un pórtico con disipadores de energía pasivos de placas ranuradas de acero

This paper evaluates two types of hysteretic passive energy dissipation devices (steel slit plates). These devices are low-cost and easy to build and install. The seismic performance of three structural models were studied with shake table tests: a frame without energy dissipation device and two frames with two types of steel slit plates. The models were instrumented with...

Modelos de perfil de velocidad para evaluación de consistencia del trazado en carreteras de la provincia de Villa Clara, Cuba

Among the aspects that influence road accidents, geometric design is the most relevant. The most used method for evaluating the design all over the world is based on the design consistency with speed profile models of operation. Cuba does not have proprietary models that consider the characteristics of the roads and drivers, so it is necessary to develop predictive models for the...

Estudio experimental del empuje sobre estructuras de contención en suelos reforzados con geomallas

This article presents an experimental study on the variation with depth of the stresses due to lateral earth pressure on a wall retaining a soil reinforced with geogrids. To this end, an apparatus was designed and constructed especially tailored for performing lateral earth pressure tests under plain strain conditions. The experimental apparatus and the measurement instruments as...

Análisis de los riesgos musculoesqueléticos asociados a los trabajos de ferrallas: Buenas prácticas

The MSD -musculoskeletal disorders- represent 45% of labour injuries. Specifically, construction workers involved in the different activities linked to steel reinforcement for an insitu concrete are exposed to a high rate of such injuries. This paper reviews in detail the physical risks of the iron worker, installing steel reinforcement for an insitu concrete pour. This study has...

Modelo de aprendizaje para la selección de un proyecto diseño-construcción (llave en mano) en el sector público

The primary method of public sector project delivery in the United States (U.S.) has traditionally been design-bid-build delivery. The public sector has historically separated design and construction contracts. In the 1990s, the U.S. public sector began to experiment with design-build project delivery, which combines design and construction in one contract. In 1997, a decision...

Capacitación en obra para obtener la polivalencia de los operarios y verificación de sus efectos en la construcción civil

This paper presents the stages of a training program of manpower in the field of Civil Construction for a period of two years; it has been developed in order to get the versatility of the workers. The research was conducted with 22 workers in a pilot site in the city of Encarnación in Paraguay, enabling this to obtain data on changes in production and the impact these have...

Influencia de las condiciones ambientales de la ciudad de Bogotá sobre el comportamiento mecánicos de una mezcla asfáltica

The paper presents the evolution of the resilient modulus, permanent deformation and strength under monotonic loading of a dense hot mixture due to long term exposure to the environment in the city of Bogota D.C. (Colombia). The mixtures were made using two asphalt cements (AC) and modified asphalt cement (MAC) with ethil-vinil-acetate: AC 80-100, AC 60-70 and MAC 20-40...

Simulación digital de procesos de construcción de estructura en concreto: casos de estudio práctico en Bogotá

Activities are in progress to develop digital simulation of the construction of structural walls and slabs made of concrete, in building projects of a Colombian construction firm. In an initial project, the models that were generated allowed to produce recommendations to reduce the total construction time. At present another simulation process is concluding, applied to two new...

Microscopía electrónica para el estudio del Na2Si0(4) en la durabilidad de un compuesto a base de cemento portlánd y refuerzo de caoba

Na2Si04 behavior as a mineralizer agent on organic fibers composites with Type I Portland Cement matrix is possible to observe it through a Scanning Electron Microscope (SEM). The purpose of this research was to study the role of this agent on this material's durability due to the chemical incompatibility between calcium hydroxide Ca(OH)2 and the fiber reinforcement from the...