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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 ...
Modeling hydrodynamic fluxes in the Nueces River Delta
(2011-08)
Increasing municipal and regional water demands have reduced freshwater inflows to the Nueces Delta. These flow reductions impair the marsh ecosystem’s functionality. As part of a United States Army Corps of Engineers ...
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 ...
Performance of cladding and waterproofing materials
(2016-12)
The long-term performance of the materials that create the building envelope is essential to the long-term durability of buildings and structures. This thesis summarizes published literature on various cladding and ...
Ozonation of erythromycin and the effects of pH, carbonate and phosphate buffers, and initial ozone dose
(2011-08)
The ubiquitous presence and chronic effect of pharmaceuticals is one of the emerging issues in environmental field. As a result of incomplete removal by sewage treatment plants, pharmaceuticals are released into the ...
Kinetics of ciprofloxacin degradation by ozonation : effects of natural organic matter, the carbonate system, and pH
(2010-08)
The presence of pharmacologically active and persistent compounds in drinking water sources is an environmental and public health concern. Sources of pharmaceuticals in the aquatic environment include wastewater treatment ...
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, ...
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. ...
Study of sustainability opportunities during construction
(2014-05)
Construction Sustainability involves the processes, decisions, and actions during the construction phase of capital projects that enhance current and future environmental, social, and economic needs while considering project ...
Evaluation of the curing time and other characteristics of prime coats applied to a granular base
(2011-05)
Prime coats have been in use for many decades to help protect the base before the subsequent application of bituminous surface treatments. Prime coat is an application of a low viscosity binder onto the base to help protect ...