RSS 1.0Department of Civil and Environmental Engineering (MU)
Civil engineering, considered one of the oldest engineering disciplines, encompasses many specialties. The major ones are structural, water resources, construction, environmental, transportation, and geotechnical engineering. Environmental engineers develop solutions to environmental problems using the principles of biology and chemistry. Many environmental engineers work as consultants, helping their clients to comply with regulations, to prevent environmental damage, and to clean up hazardous sites.
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Kinetics, mass transfer, and mass re-equilibrium for arsenate adsorption on iron oxide-based carbons
(University of Missouri--Columbia, 2018)Removal of arsenic (As) from drinking water sources is much needed worldwide, and small water treatment systems, such as point-of-use (POU) treatment, could be an effective solution for residential applications. Adopting ... -
Axial load transfer in large scale physical model drilled shaft foundations
(University of Missouri--Columbia, 2019)Drilled shaft foundations are a widely implemented type of deep foundation used to support heavy loads from superstructures such as buildings and bridges. Uncertainties exist in the axial load transfer behavior of drilled ... -
External communication displays for connected truck platoons in mixed traffic : a federated simulator study
(University of Missouri--Columbia, 2019)Truck platooning is anticipated to be the first widespread deployment of connected or automated vehicles (CAV). In addition to familiarizing the public with the function of CAV, a truck platoon has proven benefits to fuel ... -
Removal of hexavalent chromium and sulfamethazine by green zero valent iron nanoparticles (NZVI)
(University of Missouri--Columbia, 2019)A green and low-cost method for nZVI fabrication was developed in this thesis using FeCl3 as the source of iron and yerba mate (Ilex paraguariensis) extract as the reductant. The extract showed an impressive high content ... -
Analysis of the parallel seismic method for foundation reuse
(University of Missouri--Columbia, 2019)The focus of this thesis is the application of the Parallel Seismic method to determine the depths of unknown foundations. The method involves exciting stress waves in the pile foundations from impacts on the superstructure ... -
Experimental and analytical investigation of localization and post-peak behavior of steel members in tension
(University of Missouri--Columbia, 2019)Accurate simulation of extreme limit states in structures subjected to abnormal loads, earthquake, or blast requires detailed understanding of their post-peak behavior. In steel structures, these extreme-limit states are ... -
Ultrasonic measurement of stress in steel and concrete
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Advancements in ultrasonic technology may lead to the ability to directly determine stress (strain) in steel and concrete members through measurement ... -
Monotonic and fatigue assessment of steel-concrete composite beams strengthened with externally post-tensioned tendons
(University of Missouri--Columbia, 2018)The steel-concrete composite beam represents a structural system widely employed in both buildings and girder bridges. The coupling between steel beams and concrete flanges assures both economic and structural benefits ... -
Fatigue crack strengthening using pre-stressed composite patch
(University of Missouri--Columbia, 2018)The fatigue life of steel bridges can be extended by externally bonding carbon fiber reinforced polymer (CFRP) patches to the damaged elements arrest the crack propagation. Bonding a composite patch to a cracked steel ... -
Analysis and design of reinforced concrete wall systems for blast
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Building envelope is the first and most critical line of defense for a structure against external explosion. Building envelope can be divided into two ... -
Traffic impact assessment and mitigation strategies for disruptions
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This dissertation research focuses on modeling traffic conditions affected by disruptive events such as work zones, incidents, and hurricanes. Using a ... -
Exploring the impact of peracetic acid on bacterial regrowth and plasmid release and developing a novel whole-cell biosensor to monitor the expression of quorum sensing genes
(University of Missouri--Columbia, 2018)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Peracetic acid (PAA or CH3COOOH) is a promising alternative to chlorine-based disinfectants for water and wastewater treatment due to its strong ... -
Statistical and simulation methods for evaluating stationary and mobile work zone impacts
(University of Missouri--Columbia, 2018)In 2014, nearly 10% of overall congestion on freeways was due to the presence of work zones (WZs), equivalent to 310 million gallons of fuel loss (FHWA, 2017a). In terms of safety, in the US, every 5.4 minutes, a WZ related ... -
Evaluation of stress in concrete using ultrasonic waves
(University of Missouri--Columbia, 2018)This research investigates the use of ultrasonic waves to evaluate the stress and damage in concrete. Tests were conducted on 6 in. x 6 in. x 12 in. plain concrete specimens (f'c = 6,000psi) at different loading stages ... -
TMA (track mounted attenuators) involved work zones safety analysis and modeling, using machine learning to predict crash severity and crash frequency in the state of Missouri
(University of Missouri--Columbia, 2018)When talking about road maintenance safety, it is an unavoidable talking about the TMA usage, as it located in the work zone intended to reduce the damage while crash happened and at the same time protect the related ... -
Variations of disinfection by-product precursors of stream systems in north Missouri watersheds of drinking water supply reservoirs
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Dissolved organic matter (DOM) and its potential to form disinfection by-products (DBPs) during water treatment are of great public health concern. The ... -
Roof truss systems under blast loads
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Designing roof systems for blast loading is quite complex. Many uncertainties still exist in this vital research area. The typical single degree of ... -
Experimental assessment of advanced thermal imaging for detecting voids in ducts
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This research will evaluate the ability of a transient based Infrared Thermography (IRT) technology called the Infrared Ultra Time Domain (IR-UTD) ... -
Dynamic response of cold-formed steel roof trusses subject to blast load
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The popularity of cold-formed steel building components has seen rapid growth in recent years due to its low cost, high strength, and ability to ... -
Load and resistance factor design of drilled shafts subjected to lateral loading at service limit state
(University of Missouri--Columbia, 2018)Since 2007, the American Association of State Highway Administration Officials (AASHTO) has made utilization of Load and Resistance Factor Design (LRFD) mandatory on all federally-funded new bridge projects (AASHTO, 2007). ...