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Tensile strength, shear strength, and effective stress for unsaturated sand
(University of Missouri--Columbia, 2006)
It is generally accepted in geotechnical engineering that non-cohesive materials such as sands exhibit no or negligible tensile strength. However, there is significant evidence that interparticle forces arising from capillary ...
Formation studies on N-nitrosodimethylamine (NDMA) in natural waters
(University of Missouri--Columbia, 2006)
N-nitrosodimethylamine (NDMA) is a chloramines disinfection by-product and probable carcinogen to human. The California state established a 10 ng/L action level for NDMA in drinking water. Analytical method of NDMA in ...
Development and implementation of an underwater system for interface wave measurements
(University of Missouri--Columbia, 2005)
Measuring shear wave velocity profiles has become integral to geotechnical site investigation both on land and offshore. Obtaining accurate near-surface profiles in soft marine sediments can be expensive and time consuming ...
Numerical investigation of load transfer mechanisms in slopes reinforced with piles
(University of Missouri--Columbia, 2005)
The objective of the work is to use numerical analyses to evaluate the limit soil pressure on piles, to evaluate the load transfer mechanism, and to evaluate alternative means for estimating mobilized and limit loads on ...
Arsenic adsorption onto iron-chitosan composite from drinking water
(University of Missouri--Columbia, 2006)
To develop an inexpensive adsorbent, suitable for arsenic removal from drinking water, iron-chitosan based sorbents were selected. Chitosan is a biopolymer derived from chitin, a polysaccharide and is available commercially ...
Improving traffic flow conditions for interstate work-zones: evaluation of three traffic control devices
(University of Missouri--Columbia, 2005)
Highway departments, which are responsible for maintenance of different highway facilities, have the continuing responsibility to make the highway as safe and efficient as possible. Traffic control approaching and within ...
Non-destructive evaluation of wood utility poles using computed axial tomography imaging
(University of Missouri--Columbia, 2006)
Of the more than 130 million wooden utility poles in service, there are approximately 2 million that are replaced annually. A quick, yet accurate non-destructive method of evaluation of the in-service poles could provide ...
Evaluation of prestress losses in an innovative prestressed precast pavement system
(University of Missouri--Columbia, 2006)
To date no streamlined user efficient concrete roadway rehabilitation method is in practice in the United States. However, the use precast pavement is being evaluated and successful projects in Georgetown, Texas, El Monte, ...
Data uncertainty in bridge management
(University of Missouri--Columbia, 2006)
The effectiveness of bridge management decisions is based on the quality of data, and the data collected has some amount of uncertainty, which may impact management decisions. This document describes a two-part procedure ...
eHurricane Evacuation modeling - strategy evaluations and methodology enhancements
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Hurricane evacuation has attracted renewed emphasis since hurricane Katrina in 2005. Every coastal state is establishing their evacuation guidelines ...
LRFD for settlement analyses of shallow foundations and embankments-developed resistance factors for consolidation settlement analyses
(University of Missouri--Columbia, 2014)
Evaluation of temporary ramp metering for work zone safety
(University of Missouri--Columbia, 2012)
Ramp metering has been successfully implemented in many states and studies have documented its positive mobility and safety benefits. However, there have been no studies on the use of ramp metering for work zones. This ...
Evaluation of a mechanical anchoring system to improve performance of carbon fiber reinforced polymer mitigated concrete slabs under close in blasts
(University of Missouri--Columbia, 2013)
Recent events, including the bombings of the Murrah Building in Oklahoma City in 1995 and the World Trade Center in New York in 2001, have drawn attention to the fact that explosive loads can cause extreme damage and loss ...
Experimental evaluation of laminated glass interlayer under high strain rates
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The use of blast-resistant glazing in buildings subject to exterior hazards can greatly reduce, if not eliminate, the hazard of flying glass shards. ...
Training and field verification for hand-held thermographic inspection technologies
(University of Missouri--Columbia, 2013)
The goal of this research is to investigate new technologies for the condition assessment of concrete, to help ensure bridge safety and improve the effectiveness of maintenance and repair. The objectives of the research ...
A study of ADA public rights-of-way accessibility guideline impacts
(University of Missouri--Columbia, 2013)
The aim of this research is to improve safety and mobility for the disabled community by examining the impacts of the Public Rights-of-Way Accessibility Guidelines (PROWAG). Another aim is to identify the economic consequent ...
Evaluation of tensile and compressive membrane action in isolated slab column specimen
(University of Missouri--Columbia, 2012)
Older flat-plate buildings are susceptible to progressive collapse in which the failure of one slab-column connection can propagate to other connections and cause a full collapse of the building. The most common mechanism ...
Ultrasonic stress measurement for evaluating the adequacy of gusset plates
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A significant challenge in determining the safety margin for gusset plates is determining the level of stresses carried in the plate. Present technologies ...
Evaluation of mobility impacts of temporary ramp metering in work zones
(University of Missouri--Columbia, 2012)
Road maintenance has been growing in the United States and brings a variety of challenges to the transportation profession. Work zone congestion is one of the most important factors contributing to the delay and safety of ...
Numerical modeling of static nonlinear behavior of cold-formed steel stud walls
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Cold-formed steel studs have been approved for their blast-resistance capability. Research concerns nowadays focus on how to adapt and develop the ...