fib/SoE Technical Course, Nov 25, 2018

Joint fib-UAE and SOE Seminar: Advancing the technical, economic, aesthetic and environmental performance of concrete structures in the UAE

fib-UAE is a chapter under Society of Engineers-UAE committed to advancing the technical, economic, aesthetic and environmental performance of concrete structures in the United Arab Emirates. fib-UAE strives to provide consultants, contractors, concrete and precast producers with the latest information on developments and research in the field of concrete structures. The chapter also aims to be a source of state-of-the-art industry knowledge and facts for engineering students and faculty from universities across the country who are interested in concrete design and materials. fib-UAE became a member of the International Federation for Structural Concrete in June 2017.

Abu Dhabi Precast will sponsor 50 copies of the fib „Planning and Design Handbooks on Structural Precast Concrete“
cover fib

During ICCX Middle East, fib-UAE will organize a technical seminar on Nov 25 with several presentations. One of the presentations will be held by Stef Maas, one of the leading authors of fib-bulletin 74, „Planning and Design Handbook on Structural Precast Concrete“. This handbook contains most important basic information for engineers and designers who are going to work with precast technology, and Abu Dhabi Precast, one of the leading precast companies in the UAE, sponsored 50 of these books for the attendees of the course. Registration for the joint fib-UAE/SOE seminar can be processed online free-of-charge for concrete professionals through the ICCX website Attendees please make sure to write “fib” in the field “Promotional code”. The first 50 participants to arrive on Nov 25 in the morning in the fib/SOE seminar room will receive a complimentary copy of the “fib Planning and Design Handbooks on Structural Precast Concrete“, sponsored by Abu Dhabi Precast.

Eng. (Dr.) Stef Maas, Chairman of Commission 6 for prefabrication - fib international
The fib handbook for structural precast design

Eng. Tamim, JK White Cement
Applications of white cement in GCC markets

Eng. Naveet, Bekaert
Steel Fibre Reinforced Concrete Grade Slabs – Material Characterization and Design

12:00-14:00 Lunch break

Dr. Samer Almartini, Abu Dhabi University
Rheology and Mechanical Properties of Concrete Under Hot Weather

Eng. Alexandre Leclerc, Gulf Ready Mix
Concrete heat of hydration during mass pours in the Middle East

Dr. Reem Sabouni, Abu Dhabi University (ADU)
Precast Concrete Manholes Sustainability and Soil Structure Interaction Considerations

Eng. Ahmad Khartabil, TransGulf Ready Mix Company
Carbonation Resistance of Sustainable Concrete Using Recycled aggregate and Supplementary Cementitious Materials

15:00-16:00 Coffee break

Mr. Ashraf Saleheen, SOPREMA
The Eternal Relationship Between Concrete and Bitumen as Waterproofing Material

Mr. Ahmad Abdul Qadeer, Proceq Middle East
The Future of NDT Concrete with IoT

The fib handbook for structural precast design

The main aim of fib Commission 6: Prefabrication is to further the progress of precast structural concrete by promoting research and development internationally and transferring knowledge to practical design and construction. Since the 1950s, first under the FIP and then, after the CEB and FIP merged in 1998, under the fib, the commission has published many technical reports, guides to good practice and design recommendations on various precast concrete design and construction topics. One of these was the successful Planning and Design Handbook. Edited in 1994, it had a print run of about 45,000 copies and was also published in Spanish and German. Completely updated and widely expanded to include recent developments, the second edition has now been published.

Stef Maas (Technical Manager of the Belgian Precast Element Association FEBE) holds a master of science in civil engineering from the De Nayer University College Institute, Belgium, and a professional master of structural engineering from TU Delft, The Netherlands. He is Convener of CEN/TC 229/WG 1; Chairman fibCOM 6 Prefabrication. He is also member of numerous national and international working groups dealing with standardisation and certification.

Applications of white cement in GCC markets

The presentation will cover a general idea about the industry of cement in GCC. A brief about JKCEMENT and its international activities. The process of manufacturing of white cement, quality control, logistics and packaging facilities will be discussed. The range of products supplied in the core markets with a focus on the standard specifications, practices and test methods to meet international requirements. Specific attention will be given to the applications of the white cement including the dry mix, precast, GRC and flooring.

Tamim Emad Youssef studied architectural engineering at the University of Helwan, Egypt and is Technical Sales Manager (Applications Services) handling the regions of GCC, Africa, Latin America and South East Asia with JK CEMENT WORKS (FZC). He specializes in construction chemicals for the concrete industry and has worked for many years in Egypt, Qatar, Abu Dhabi and Dubai.

Steel Fibre Reinforced Concrete Grade Slabs – Material Characterization and Design

The use of steel fibres in grade slabs such as industrial floors, warehouses, ports and highway pavements is prevalent in many countries. Thanks to the improvements in steel fibre technology and more user experiences in terms of economy and durability, the use of Steel Fibre Reinforced Concrete (SFRC) is gaining traction. However, it is also true that absence of appropriate material characterization and specifications for SFRC and lack of unifying standards worldwide for testing and design has led to a rather slow acceptance of the concept. It is very well known that concrete as such is a brittle material and steel fibres when added impart ductility to it. This added ductility in concrete allows for greater energy absorption and redistribution of stresses, which in turn lets designers use inelastic design approaches, which are otherwise not possible with conventional concrete. This paper presents a holistic view of the theory and practicality of design of SFRC Grade Slabs along with the necessary material characterizations needed to perform successful designs with SFRC.

Navneet Narayan is Technical Manager Middle East & South Asia at NV Bekaert SA. He received a Master’s degree (Structural Engineering) from California Institute of Technology, USA, and a B.Tech (Civil Engineering) from IIT Madras, Chennai, India. His interests include structural design and analysis, innovation, application and research on the use of fibre technology in the construction industry.

Rheology and Mechanical Properties of Concrete Under Hot Weather

The rheological properties of fresh concrete incorporating various cementitious supplementary materials (SCMs) in binary and ternary blend were investigated under hot weather conditions. The optimum PC dosage on the controlled mixture at high temperature was depicted. Two cementitious supplementary materials were used: silica fume and fly ash. Ordinary Portland cement concrete mixtures were designed with a water to cement ratio of 0.36 and incorporation the optimum dosage of polycarboxylate-based high water reducing admixtures (PC) was investigated and fixed for all SCC mixtures. Self-consolidating concrete (SCC) mixtures were continuously mixed for up to 110 minutes using a drum mixer under different ambient temperatures (25, 30, 35, 40 °C) and tested at an interval of 30 min. The rheological testing was performed using BT2 type concrete rheometer. The test results indicated that the rheological properties of concrete were highly affected by changes in temperature, mixing time, and SCMs dosage. The relative yield stress was found to have an exponential correlation with the slump flow, whereas a weak correlation was found between relative viscosity and slump flow. The relationship between the relative yield stress and relative viscosity was investigated in an attempt to understand the contribution of SCMs type and dosage to mitigate the harsh effects of hot temperature and prolonged mixing on the rheology of self-consolidating concrete (SCC) mixtures. The findings of this study are of practical significance and can provide realistic recommendations on the use of SCMs in hot weather conditions.

Dr. Samer Al-Martini is Associate Professor of Civil Engineering at Abu Dhabi University, UAE. He obtained his MESc and PhD from the University of Western Ontario, Canada and is registered in the Professional Engineers in Ontario. His research interests include cement and concrete technology, properties of concrete in hot weather conditions, and modeling the behavior of cement-based materials.

Concrete heat of hydration during mass pours in the Middle East

Concrete heat of hydration during mass pours is a major concern in the Middle East. This presentation discusses the reasons why a concrete maximum temperature during hydration is specified, the methods available to predict the temperature reached by a mix in a given context and the best practices available to limit this maximum temperature

Alexandre Leclerc obtained his MSc in Civil Engineering from the University of Sherbrooke, Quebec, Canada in 2011. Subsequently he worked as Development Engineer in the Research Center of Lafarge in Lyon, France. Since 2015, he has been in the Middle East and he is now the Head of Technical for LafargeHolcim Readymix activities in the UAE and Oman.

Precast Concrete Manholes Sustainability and Soil Structure Interaction Considerations

Sewer systems enclose one of the harshest environments on concrete materials. These systems if made of concrete are usually accessed for maintenance and inspection by precast concrete manholes. The present design practices of these shafts components are generally conservative which results in heavily reinforced bases. If verified by full scale testing codes may allow the use of alternative manhole designs. To produce a more sustainable precast concrete manhole the steel reinforcement has to be minimized or even eliminated altogether if possible. In the course of introducing a more sustainable manhole an extensive experimental and numerical investigation on precast concrete manholes was conducted at Western University in collaboration with the Ontario Concrete Pipe Association. The experimental investigation included full scale load testing of precast concrete manholes with full consideration of soil structure interaction (SSI) in a controlled laboratory environment. This was followed by an extensive numerical investigation on the precast concrete manholes. Based on the results of this extensive investigation a sustainable manhole design was proposed and will be discussed in this presentation. Also a life cycle assessment scheme for precast concrete manholes is presented.

Dr. Reem Sabouni is Associate Professor at Abu Dhabi University and member of several prominent professional engineering societies. She acquired her PhD and Master degrees in Civil Engineering from the University of Western Ontario in Canada. She was the first researcher in North America to conduct full-scale tests on circular precast concrete manholes in a controlled laboratory environment.

Carbonation Resistance of Sustainable Concrete Using Recycled aggregate and Supplementary Cementitious Materials

Green concrete is the recent sustainable practice in UAE that was enforced by Dubai Municipality in construction field within the emirate of Dubai to reduce the Carbon foot print in construction industry and increase the durability of the structures. This led the construction industry to reduce the usage of Ordinary Portland cement by replacing it with supplementary cementitious materials (SCMs) such as Grand Granulated Blast Furnace Slag (GGBS) and flyash for structural and non-structural concrete mixtures. This increased the demand on both GGBS and flyash and specifically GGBS since it is being grinded locally. Therefore GGBS is widely available in the country with almost all cement factories. Incorporating GGBS or flyash in the concrete mixtures improve the concrete resistance to water permeability, water absorption, and chloride penetration which ultimately will increase the structure service life by increasing the corrosion threshold of concrete. On the other hand, studies showed that incorporating GGBS – especially at high percentage - can reduce the concrete resistance to carbonation depending on different factors that should be investigated further. Unlike chloride penetration, there is no ASTM or BS standard test to anticipate the concrete mixture resistance to carbonation in early age. In light of this, different concrete mixtures with different GGBS and flyash percentages as well as different recycled aggregates replacement percentages are investigated for carbonation resistance in accelerated proposed method, considering concrete mixtures’ key parameters like water-cement ratio, total cement content and fineness of the SCM. The results are analysed to arrive to pertinent conclusions for the best utilization of sustainable concrete for both chloride penetration and carbonation resistance.

Eng. Ahmad Khartabil graduated from Abu Dhabi University as a civil engineer in 2012, achieving Magna Cum Laude, and subsequently joined Transgulf Readymix Concrete Co. LLC, where he has been promoted to Technical Manager in 2016. His research interests include hot weather concreting, concrete durability, service life of concrete structures, sustainable construction materials, and rheology of fresh concrete.

The Eternal Relationship Between Concrete and Bitumen as Waterproofing Material

  • General information about the above relationship.
  • What is “Modified Bitumen” membranes and why modified.
  • Types of modifiers and their impact on membrane performance in relation to application over concrete substrates.
  • Types of reinforcement and their impact on membrane performance in relation to application over concrete substrates.
  • Types of sheet membranes.
  • Progress achieved by some manufacturers in developing and improving bitumen waterproofing products.
  • Need-to-Know information about specifying and selecting waterproofing material.
  • Value Engineering waterproofing systems and their impact on cost and time saving (If time allows).

The Future on NDT Concrete with IoT

The ground penetrating radar (GPR) with the ultra wideband technology combined with a compact wireless scan car is the beginning of a new era in NDT.

Pioneering ultra-wideband: Proceq GPR Live features the unique Stepped Frequency Continuous Wave radar technology delivering the widest frequency spectrum in the market. All applications typically addressed with radar antennas in the range of 0.9 to 3.5 GHz can now be covered with a single device. No need to buy and switch to a different antenna for every testing location. Current GPR solutions, in fact, cover only one frequency which allows to scan for only once specific penetration depth. Additionally, such solutions have large limitations in terms of detectable object size.

The Augmented Reality (AR) feature on GPR Live enables the users to literally look into concrete structures such as floors, walls, tunnels and bridges, while surveying for features and flaws. Efficient and meticulous maintenance of assets, including taking adequate steps for repairs and lifetime extension, helps to prevent disruptive failures. Yet, interpretation of NDT measurements has long remained complex. Proceq is now transforming the NDT industry through continuous innovation in setting new standards in ease-of-use, sharing inspection results, enhancing analysis and insights, and supporting real-time decision-making together with clients.

With on-site 3D, on-board AR and commercial options including hardware-as-a-service (HAAS), Proceq GPR Live products grant unparalleled clarity to users worldwide when looking into concrete.

Proceq of Switzerland is shaping the future of portable materials testing (NDT). At Proceq’s Global Summit in September 2017 (https:/, the company released multiple state of the art devices, utilizing latest technologies from Internet of Things (IoT), cloud computing and artificial intelligence (A.I.) with ultra-user friendly interfaces – a true revolution for the NDT industry and setting a new benchmark within the sector. Proceq, part of the Tectus Group, has been providing innovative testing solutions since 1954 and its strong research and development team in Switzerland continues to create high quality Swiss-manufactured products. With subsidiaries in North and South America, United Kingdom, Russia, the Middle East, China and Singapore, Proceq provides its international customers with excellent local support.