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End-region behavior of precast, prestressed concrete I-girders employing 0.7-inch diameter prestressing strands
(2016-08-11)
Pretensioned concrete girders are currently fabricated using 0.5- or 0.6-in. diameter prestressing strands. In recent years, however, it has become of interest to employ larger-diameter 0.7-in. diameter strands to reduce ...
Evaluation of ASTM C 494 procedures for polycarboxylate admixtures used in precast concrete elements
(2016-05)
This thesis presents the investigation towards increasing the understanding of the effect of polycarboxylate (PCE) High-Range Water-Reducers (HRWRs) on the performance of concrete mixtures, with a special focus on concrete ...
Revised suspension and transport methods for the rapid assessment of exposure to particulate emissions from surface contamination sites
(2004-05)
There is a need to continue refining single media fate and transport models used
in risk assessments and management. Periodic reviews are required to minimize
subjective assumptions and to select and integrate new data ...
Transportation planning via location-based social networking data : exploring many-to-many connections
(2015-08)
Today’s metropolitan areas see changes in populations and land development occurring at faster rates than transportation planning can be updated. This dissertation explores the use of a new dataset from the location-based ...
Characterization of the swelling potential of expansive clays using centrifuge technology
(2010-05)
The characterization of the swell potential of expansive clay is complicated by the fact that traditional swell testing methods require an excessive amount of time for specimens to swell to their maximum heights. As a ...
A framework for developing road risk indices using quantile regression based crash prediction model
(2011-08)
Safety reviews of existing roads are becoming a popular practice of many agencies nationally and internationally. Knowing road safety information is of great importance to both policymakers in addressing safety concerns ...
Evaluation of concrete structures affected by alkali-silica reaction and delayed ettringite formation
(2012-08)
Alkali-silica reaction (ASR) and delayed ettringite formation (DEF) are expansive reactions that can lead to the premature deterioration of concrete structures. Both have been implicated in the deterioration of numerous ...
Development and application of a production rate resource for contract time determination
(2017-05)
Production rates are significantly important for contract time determination procedures as these are essential for estimating the duration of every activity needed to complete a highway construction project. For this reason, ...
Stage-monitoring network optimization using GIS
(2006)
The South Florida Water Management District (SFWMD) has a large and expanding stage-monitoring network in need of optimization. The basic optimization problem is to keep in operation the least number of stage-monitoring ...
Now on TAP : accelerated solutions to the traffic assignment problem
(2019-08-09)
The traffic assignment problem (TAP) represents the final and most computationally difficult step in the Urban Transportation Modeling System (UTMS). Prior work has studied several means of solving this problem quickly. ...