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Now showing items 11-20 of 107
Estudio de las órdenes de cambio en proyectos de diseño-construcción en las escuelas del siglo XXI
(2015)
Change orders have a strong potential to become difficult, because of its significant increase in cost and contract duration extension. This research identifies and evaluates the causes of change orders in design build ...
Desarrollar un modelo conceptual sobre una cadena de suministro sostenible para una operación de ensamblaje de componentes electrónicos en Puerto Rico
(2016)
This project explores models related to the concept of sustainable supply chain management. The main objective is to develop a conceptual model focused on the environmental aspect of the sustainability concept for an ...
Water quality assessment with aquatic non-structural blocks made of coal ash aggregates mortars
(2012)
A handful of biochemical processes occur in aquatic environments. One of the problems that are mostly encountered in such environments is caused by excess nutrient input and subsequent algal bloom. A series of studies were ...
Instrumentación de la represa Guajataca para el monitoreo sísmico y de deslizamientos
(2013-12)
This report presents the seismic and landslide monitoring system installation process used in the Guajataca earth dam which is located at the boundary of the municipalities of San Sebastian, Quebradillas and Camuy, Puerto ...
Bus stop consolidation analysis for Puerto Rico's Metropolitan Bus Authority
(2015)
The transit planning in the Metropolitan Area of San Juan in Puerto Rico has a challenging problem because of its low sponsorship. Several reasons for the lack of sponsorship discussed among the community are urban sprawl, ...
Evaluation of centerline rumble strips implementation in Puerto Rico: PR-114 case study
(2017)
A research study completed in 2016 by the National Highway Traffic Safety Administration (NHTSA), showed that 51% of the 32,675-motor vehicle traffic crash fatalities reported in 2014 occurred on the rural road network in ...
Estudios de las propiedades de los morteros que emplean altas dosis de cenizas volantes activadas alcalinamente
(2014)
Portland cement is the worldwide most commonly used material in construction. However, it is known that the Portland cement industries have a significant negative impact in the environment. For this reason, there is a study ...
Statistical optimization of pervious concrete pavement containing fly ash and engineered iron oxide nanoparticles for runoff quality and quantity controls
(2014)
Portland cement pervious concrete (PCPC) usage has increased due to its potential to reduce storm water runoff and related pollution. Partial Portland cement substitution by fly ash (FA) in concrete production has the ...
Diseño y desarrollo de un sistema para el manejo de información relacionada a proyectos de Alianzas Público Privadas en Puerto Rico
(2013)
The information system of technical literature is a digital database created to store information about the public-private partnerships at national and international levels. The application wants to satisfy the needs of ...
The use of unmanned aerial vehicles as a platform for site inspection, topography and earthwork volume calculations
(2019-12-03)
In recent years, the use of Unmanned Aerial Systems (UAS), or Unmanned Aerial Vehicles (UAV) has become popular in various industries, including construction. Even though the use and capabilities of UAVs is now firmly ...