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Now showing items 61-70 of 287
Evaluación experimental del efecto de la compactación en la resistencia a corto plazo de arena limosa (SM) A-2-4 (PR-108)
(2009-12)
Compaction is a ground improvement technique most commonly used in Civil Engineering. Specification for compaction determine the required moisture content and maximum dry density that the soil should reach in the field to ...
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 ...
Moisture effects on short term durability and mechanical properties of two Puerto Rico crushed limestone aggregates
(2009-12)
This Master of Science thesis includes an experimental characterization of the mechanical properties of two Puerto Rico crushed limestone aggregates (CLA). Specifically, the crushed limestone was obtained from two quarries ...
Impulse load response of lattice steel columns
(2012)
Many bridges that represent an important part of our nation’s infrastructure system are constructed from steel components including steel plates, beams, columns, and cables of different configurations. Because of their ...
Seismic analysis and retrofitting measures for bridge No. 2001 in Highway PR-22, Bayamón, PR
(2013-05)
The Commonwealth of Puerto Rico has over 2200 in-service bridges as part of their inventory and more than 50% of these bridges were constructed over 30 years ago. Seismic design requirements are updated frequently due to ...
Identifying total phosphorus spectral signal in a tropical estuary lagoon using an hyperspectral sensor and its application to water quality modeling
(2009)
The San Jose Lagoon (SJL) is located in the northern coast of Puerto Rico and is classified as a eutrophic water body. Site access difficulties establish the need for other monitoring alternatives to measure nutrients ...
A case study of the Tallulah River Road design using context sensitive solution framework
(2012)
The use of Context Sensitive Solutions (CSS) for the project development process is to take in consideration the needs and concerns of different stakeholders in various areas, such as: community, environmental, aesthetic, ...
Disinfection by-products occurrence and Escherichia Coliform removal in a point-of-entry cistern purification unit
(2012)
This research aims to develop and test a Point-of-Entry Cistern Purification Unit (POE-CPU) to guarantee water quality for household purposes, with an emphasis on turbidity, E. coli removal and minimal occurrence of ...
A framework for automating the daily site reporting and progress monitoring for highway construction projects
(2013)
Construction inspection data allows field personnel to keep record of the work performed, and monitor the project execution in order to provide quality control. Current practices in highway construction projects for ...
GPS-enabled mobile phones as sensors in the determination of the components of individual trip chains withouth user input
(2012)
Dynamic Traffic Assignment (DTA) is used to maximize the network’s capacity utilization. Research for DTA is active, but the data to apply it in real world situations is still under development. The solution proposed herein ...