У оквиру ове докторске дисертације формулисан је нови конститутивни модел бетона за локалну анализу, према неспрегнутој комбинацији теорије пластичности и механике оштећења. Одабрана функција течења у делу према теорији пластичности је јединствено адаптирана, са одвојеним промен…
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Performance-Based Design (PBD) has gained popularity as a procedure for the seismic design of structures. In order to achieve the objectives of PBD, it is essential to have accurate modelling approaches. Non-linear Time History Analysis (NLTHA) is the most complex technique that…
Application of recycled glass as a cement or fine aggregate replacement in concrete could result in major benefits towards a more sustainable design of concrete materials. This is however only possible if the main obstacle, the alkali silica reaction (ASR), is properly addressed…
In this study, the behavior of jointless bridge decks supported by simple-span girders was investigated for instantaneous, thermal and time-dependent loading effects. Instantaneous effects are due to live load plus impact, thermal effects are due to temperature variations, and t…
During the last decade steel fiber reinforced concrete (SFRC) has been increasingly used as a construction material. In structural applications, steel fibers have demonstrated the ability to inhibit tensile cracking, improve toughness, and resist impact loading. Hence, steel fib…
Prestressed Concrete Pavement (PCP) has been around for almost 60 years. Its application started in Europe in the 1940s, and since has been applied with fair success in other countries, including the United States. Domestic application of this technology has been limited for dif…
In this study, analysis of durability and structural behavior of concrete under prescribed coupled chemo-mechanical conditions was proposed, formulated and implemented in a computational framework. The governing mathematical equations that idealize the tripartite physical-chemic…
The feasibility of detecting and quantifying delamination at the interface between steel (or GFRP) bar and concrete using ultrasonic guided waves is investigated in this study. These waves can propagate a long distance along the reinforcing steel (or GFRP) bar or concrete beam a…
This thesis reports on the research outcome of corrosion mechanism and corrosion rate of mild steel in different environments (saline, alkaline solutions and concrete media) using potentiodynamic polarization technique. The study also included the effect of corrosion on bond str…
War, terrorist attacks, explosions, progressive collapse and other unforeseen circumstances have damaged many structures, including buildings and bridges in war- torn countries such as Iraq. Most of the damaged structural members, for example, beams, columns and slabs, have not …
Very limited research studies have been conducted to examine bond of glass fibre reinforced polymer (GFRP) bars with high concrete strength. The current research project aims to compare between bond measured from a pull-out test and a hinged beam test for GFRP bars embedded in h…
In order to reduce the use of landfilling within waste management great emphasis is being placed on waste reduction and recycling. Each year in the UK approximately 2.5 Mt of waste glass is produced and approximately half of this waste is not recyclable. Therefore alternative wa…
Concrete, our most widely used construction material, is a fluid that offers the opportunity to economically create structures of almost any geometry. Yet this unique fluidity is seldom capitalised on, with concrete instead being cast into rigid prismatic moulds to create high m…
Arsenic contamination of drinking water sources threatens the health of over 50 million people around the world. Sustainable implementation of arsenic removal technologies requires disposal options for produced wastes that limit the release of arsenic. Arsenic contamination is p…
Cracking adversely affects the long-term performance of reinforced concrete structures since cracking accelerates the ingress of moisture and aggressive ions (e.g., chlorides) into concrete. Detecting cracking and quantifying the rate of moisture movement in concrete, therefore,…
The long-term creep behavior of shale has become a major concern in different engineering applications, which reduces oil and gas production of shale reservoirs and triggers devastating landslides. While indentation creep tests at the nanoscale can reveal creep responses of sing…
Standard pullout tests (e.g. 200 mm cubes) with a short embedment length have shown a significant reduction (80% loss at 200 °C) in the bond strength of GFRP bars at high temperatures. More detailed bond behaviour of glass fibre reinforced polymer (GFRP) reinforcing bars has bee…
Earthquakes that have occurred recently across the globe in various countries including United States, Japan, New Zealand, Haiti, Turkey and Italy have brought into light the poor seismic performance of older-type, non-ductile concrete buildings. These buildings, mainly designed…
Scope and method of study. The losses in strength and permeability of plain cement, fly ash, and silica fume mortars and concretes, due to an interruption in moist curing, and subsequent regain in these properties due to recuring were investigated. In addition, the curing requir…