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Shear strength and displacement capacity of squat reinforced concrete shear walls
(2016)
Squat reinforced concrete (RC) walls are essential structural components in nuclear power facilities (NPP) and in many civil structures. An adequate prediction of the shear strength and displacement capacity of these ...
Modeling, dynamic identification, and nonlinear assessment of civil structures from recorded earthquakes and ambient vibrations
(2018-12-12)
America’s infrastructure was constructed mainly during the mid-20th century. Its aging effects are increasing every year, creating a dilemma in which the United States is not alone. Moreover, the great majority of buildings ...
Dynamic properties and seismic response of the cable structures and towers of the Arecibo Observatory
(2006-05)
This investigation was requested by the staff of the Arecibo Observatory to determine whether the towers and cables that support the suspended platform are capable of resisting a maximum-credible earthquake in the elastic ...
Biodeterioration of PVC plastics, biochemical fate of DEHP, and bioreactor landfills for DEHP-containing leachate management
(2014-12)
Di-(2-ethylhexyl) phthalate (DEHP), a widely used plasticizer in the manufacture of polymeric materials such as polyvinyl chloride, was studied in order to understand its fate and transport in complex environments such as ...
Effect of cyclic high loading rates on the fatigue strength of aluminum-based composites
(2009)
The study of fatigue under high loading rates is of great interest in the complete characterization of a new series of composites with Al-Cu-Mg matrix reinforced with AlB2 dispersoids. Homogeneous and functionally graded ...
Novel titanium silicate porous materials: Synthesis using large structure directing agents, functionalization and evaluation for carbon dioxide adsorption-based applications
(2015-12)
UPRM-5 is a flexible titanium silicate and nano-porous adsorbent modified for the selective removal of CO2 from light gas mixtures. In this work, UPRM-5 was prepared using TPA and TBA cations as structure directing agents ...
Crash modification factors for rumble strips treatment in freeway
(2015-12)
Longitudinal shoulder rumble strips is a safety feature or treatment on a paved shoulder, capable of alerting drivers that their motor vehicle is departing the traveled lane. This treatment has proven to be effective ...
Metodología para la evaluación de la consistencia de diseño de carreteras rurales de dos carriles
(2015)
The road geometric design consistency is correlated with its level of safety. This evaluation is performed in three stages: measure or estimation of the operational speed, calculation of the dependent variable in the ...
Fatigue life assessment of sandwich composite hulls under repeated slamming loads
(2014)
Slamming loads induced by waves on ships can cause severe damages on structural members which may compromise integrity and safety. Therefore, better understanding of the slamming problem is a topic of interest in marine ...
Determinación de períodos fundamentales del suelo mediante vibración ambiental en las comunidades de Jardines del Caribe y La Playa, Puerto Rico
(2020-05-28)
Due to the seismic risk of Puerto Rico, this project was conducted to estimate the fundamental periods of vibration of the soil deposits in the areas of Jardines del Caribe and La Playa, respectively communities of Mayagüez ...