ICACHE 2022 Keynote Speakers
Prof. Mohamed A. Ismail
Dept. of Civil Engineering, Miami College of Henan University, Canada
Prof. Ismail is currently working as a full professor at Dept. of Civil Engineering, Miami College of Henan University, Kaifeng, China since October 2018. He is also an adjunct professor at School of Civil and Mechanical Engineering, Faculty of Engineering and Science, Curtin University, Bentley, Australia. Before joining Miami College, Prof. Ismail was working as an Associate Professor at Civil and Construction Engineering Department, Faculty of Engineering and Science, Curtin University Malaysia, Sarawak, Malaysia. He received his B. Sc. and M. Sc. Degrees from Alexandria University, Egypt in 1991 and 1996, respectively and his PhD from Nanyang Technological University (NTU), Singapore in 2003.
Prof. Ismail teaches undergraduate courses in Civil Engineering Materials, Concrete Technology, Engineering Mechanics, Reinforced Concrete Structural Design, Engineering and Environmental Principles and Theories, Construction Management, Concrete Laboratory, Mechanics of Solids, Structural Analysis and Fluid mechanics. For graduate students, he teaches courses in Advanced Concrete Technology and Advanced Structural Analysis. His research work includes Concrete Technology, Smart Materials in Construction, High Performance Concrete, Durability of Concrete, NDT, Arc Thermal Metal Spray Technology, Sustainable Building Materials and Protection Methods of Reinforced Concrete Structures.
Prof. Ismail has extensive teaching and research experiences over 25 years in Canada, South Korea, Malaysia, Egypt, Japan and China. He also had broad experience at Engineering Consultancies and Oil & Gas Firms. Prof. Ismail has published more than 120 papers in referred Journals and International Conferences and 6 Books. He served as a reviewer for many International Journals, Editorial Board Member of few journals and Editor-in-chief of Challenge Journal of Concrete Research Letters (CJCRL). He is a member of ASCE and EES and a Professional Engineer of APEGA-Canada.
Speech Title: Recent Development in Protection of Steel and Concrete structures -Research Perspective-
Abstract: Waste water contains various types of microbes, including sulfur-reducing bacteria, hazardous materials (i.e., Pb, As, Sn, Cd), and acidic elements, all of which are harmful to living organism. Concrete is a porous material, which means that aggressive species of waste water are able to diffuse into and out of it, exposing the surrounding ground to contamination.
Hazardous waste water chemicals affect the quality of concrete and are responsible for its deterioration, as well as the deterioration of the reinforcement steel bars embedded within, after a certain period of time. Other factors that affect the quality of waste water treatment reservoirs are ozone and activated granular carbon. These chemicals can cause cracking, fading, and spalling of concrete during short periods of exposure.
There are many recommended methods for protecting concrete in waste water reservoirs, including polymeric coatings and stainless steel plating. The polymeric coating has several drawbacks, including color fading and adhesion due to direct exposure to ozone in waste water treatment reservoir. The thermal contraction and expansion coefficients of polymers and concrete are different, which causes the detachment of the polymeric coating from concrete and can lead to spalling after a period of time.
The arc thermal spray coating process improve the life span of waste water reservoir by using stainless steel coating rather than using its plate. To protect the waste water reservoir from corrosion by using different metallic coatings deposited by arc thermal spraying process in pH 4 reduced by adding 0.1M sulphuric acid in distilled water.
Assoc. Prof. Hazem Samih Mohamed
Southwest Petroleum University,Egypt
Assoc. Prof. Hazem Samih Mohamed (HS Mohamed), Egyptian, focuses on steel structures and offshore structures. He completed his Ph. D. degree at Huazhong University of Science and Technology. Afterward, he was selected as a distinguished young Assoc. professor at the School of Civil Engineering Geomatics of Southwest Petroleum University. He had conducted several research works on the Fatigue assessment of offshore platforms, bearing capacity of the corroded offshore platforms, and rehabilitation of the corroded/uncorroded offshore platforms using CFRP laminates. He has published several peer-reviewed scientific papers in well-recognized top journals, such as Construction and Building Material; Marine structures; Ocean Engineering; Thin-walled Structures; Journal of Constructional Steel Research; and Engineering Failure Analysis.
Speech Title: Rehabilitation of corroded tubular joints with CFRP laminates
Abstract: A considerable number of tubular structures were built around the world in the last century such as offshore platforms, exhibition halls, bridges, stadiums, industrial plants, railway stations, and airports. Those structures-especially offshore platforms-are exposed to environmental conditions such as air, rain, and seawater. As a result, the safety of those structures is mainly threatened by the risk of corrosion. Such corrosion defects located at the brace to chord intersection of the joint lead to reducing its bearing capacity and service life. Accordingly, one of the significant challenges confronting the researchers is extending and enhancing the bearing capacity and service life of those structures. Thus, the focus of this presentation is on the rehabilitation of corroded offshore tubular joints by utilizing Carbon Fibre Reinforcement Polymers CFRP laminates as strengthening materials, corrosion inhibition techniques, and a fatigue life extension approach.
Assoc. Prof. Mianheng Lai
School of Civil Engineering, Guangzhou University, China
Speech Title: High-performance steel slag concrete material and structure
Abstract: Using steel slag, a waste by-product in the steel industry to replace natural aggregates to produce concrete can offer a sustainable solution in mitigating the environmental problems due to huge depletion of natural aggregates and disposal of abundant slag. Extensive research studies revealed that steel slag concrete has superior strength and stiffness but may also cause unsoundness to concrete. To solve the problem, steel slag concrete-filled-steel-tube (SSCFST) column was proposed, in which the concrete’s expansion would activate larger confining stress, and thereby enhancing the overall behaviour of the column. A total of 18 traditional CFST and SSCFST column specimens with and without external steel confinement were prepared and tested under uni-axial compression. The major testing parameters were the steel tube diameter to thickness ratio, the steel slag coarse / fine aggregate replacement ratio and spacing of external confinement. Results revealed that by replacing 50% NCA with SSCA or 50% NFA with SSFA, the compressive strength of steel slag concrete increased but the flowability decreased. Besides, SSCFST specimens showed superior mechanical behaviour than traditional CFST specimens. With external confinement, the strength and stiffness were further improved. Lastly, a theoretical load-strain model was developed to predict the mechanical behaviour of traditional CFST and SSCFST columns and good agreement has been obtained between predicted and experimental results.