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Now showing items 41-50 of 50
Tightening procedures for large diameter anchor bolts
(Texas A&M University, 1997)
Standards for tightening procedures for large diameter anchor bolts are proposed. These bolts, 38 mm (I 1/2 in.) in diameter or greater, are widely used in highway appurtenance. In current practices, the contractor is ...
Qualification of concrete mixtures for fast track construction applications
(Texas A&M University, 1997)
Fast track construction is a special type of construction where construction methods and activities are planned to minimize the construction duration. Since the duration of the hardening period of concrete is largely ...
Empirical design charts against earthquake-induced liquefaction in cohesionless soils based on in-situ tests
(Texas A&M University, 1997)
Available methods to predict the liquefaction susceptibility of cohesionless soils are based either in empirical charts (in-situ test) or laboratory tests. In-situ tests are a valuable source of information; especially in ...
Enhanced solubility of petroleum hydrocarbons using biosurfactants
(Texas A&M University, 1997)
This research investigation included two similarly-designed experiments. In the first, a biological surfactant produced by Rhodococcus strain H13-A and a commonly-used synthetic surfactant, Tween-80 (polyoxyethylene sorbitan ...
Nutrient dynamics in marsh sediments contaminated by an oil spill following a flood
(Texas A&M University, 1997)
This research involves a study of the natural recovery of a brackish marsh impacted by an oil spill and fire in which the area was naturally enhanced with elevated nutrient levels. Flood waters during October, 1994, ...
A theoretical study of discrete air phase migration contaminated with a volatile organic
(Texas A&M University, 1997)
A theoretical study of discrete air phase migration contaminated with a volatile organic is developed in order to study air bubble migration through granular porous media in air sparging technology. The experiment is ...
Modeling fatique behavior of dents in petroleum pipelines
(Texas A&M University, 1997)
Dents in pipelines can seriously reduce the design life of a pipeline. Dents cause stress concentrations to develop which make dents susceptible to fatigue failures. Acceptance criteria of dents are currently only based ...
Evaluation of the filler effects on fatique cracking and permanent deformation of asphalt concrete mixtures
(Texas A&M University, 1997)
The addition of hydrated lime to asphalt has shown to be beneficial with an improvement in the Theological properties of the binder, as well as resistance to permanent deformation (rutting) and fatigue cracking of asphalt ...
Biodegradation of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX)
(Texas A&M University, 1997)
Since World War II, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) has been one of the most widely used explosives. Consequently, many munitions facilities and other related sites have been contaminated with HMX ...
In-place engineering properties of recycled and stabilized pavement layers
(Texas A&M University, 1997)
1.0INTRODUCTION Now that most of the new road construction in the United States is complete, the major emphasis has switched to maintaining those roads. The focus of many of Texas districts in the Texas Department of ...