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Now showing items 11-20 of 20
Estudio de la influencia del cemento Pórtland en las propiedades del hormigón con cenizas volantes
(2012)
The durability of concrete is influenced by its porous network. The use of fly ash in concrete mixtures produces additional hydration products, changing its micro-structure. As a concrete admixture, fly ash not only improves ...
Computational analysis of critical gusset plate connections in steel bridges
(2012)
An existing steel truss bridge located in Missouri was selected to determine the critical connections based on the loads criteria established in the Manual for Bridge Evaluation. The selected connections were typically ...
Evaluación experimental de las propiedades mecánicas de mezcla de goma triturada y arena Ottawa
(2012-07)
During this investigation the effect on the mechanical properties of Ottawa sand when different percentages of shredded tires added to the sand specimens was studied. In addition, an alternative for recycling shredded tires ...
Regionalized flood frequency analysis for basins in Puerto Rico
(2012)
The main goal of this research is to provide a flood regionalization study for Puerto Rico based on recent advances in watershed classification and parameter estimation techniques. The regional flood frequency was achieved ...
Axial compression load transfer mechanisms of drilled shafts in weak porous limestone
(2012)
The considerable increase in the use of drilled shafts to meet the demand of loads of great magnitude in the construction of buildings, roads and bridges, the fact that around 27.5% of the geomorphologic area of Puerto ...
Flood prediction limitations in small watersheds with mountains terrain and high rainfall variability
(2012)
An evaluation of the interrelation between different up-scaling parameters and inputs were evaluated to quantify their influence on hydrologic predictability in complex terrain and small watersheds. An up-scaling experiment ...
Computational mechanics of tainter gates; trunnion friction study
(2012)
Tainter gates are a type of floodgate with a radial geometry that is used in dams and canal locks to control the water flow from navigation structures. Throughout the years, these structures have presented operational ...
Estudio de viabilidad sobre el uso de energía renovable solar en la oficina de campo de proyectos de infraestructura
(2012)
Based on the environmental impact caused by the consumption of energy produced by the burning of fossil fuel, global warming and the concern that natural resources are limited, theories of sustainable development to develop ...
Estimation of water balance and groundwater processes of the Salinas to Patillas area in southeastern Puerto Rico for 1980 - 2010
(2012)
This study describes the groundwater recharge and pumpage, and surface water distribution through a water balance model for the Salinas to Patillas agricultural area located over the alluvium of the eastern part of the ...
Development of ternary relationships among soil characteristics, CAAs amount, and groundwater quality: column percolation
(2012)
Coal ash aggregates (CAAs) from a coal power plant was evaluated for use as a backfilling substitute in open pit restoration. The restoration was successfully simulated under laboratory conditions by using three dissimilar ...