Construction Engineering and Management Commons^™

Mat-723: Bond Behaviour Of Grouted Connections Under Monotonic Tensile Loads, Mohamed Elsayed, Douglas James Provost-Smith, Moncef L. Nehdi, Osama Eissa

Canadian Society for Civil Engineering

Grouted bar-in-conduit connections are versatile connections widely used in the precast concrete construction. In precast load bearing wall structures, two vertical wall panels are connected by a reinforcing bar, which is projected from one panel and grouted into a sleeve placed in the other. The main function of the ties is to resist tension induced by in-plane and out-of-plane straining actions and to provide ductility to the wall assembly through the yielding of the reinforcement. Limited information is currently available on the behaviour of such connections. This paper presents the findings of an investigation conducted to investigate the behaviour of …

Mat-725: Self Leveling Mortar: Why And How?, Ahmed Hassanein, Eman Shalaby, Omar Amer, Reem Ahmed, Sherif Orban, Amr Fathi, Yousef Abu Gharieb, Mohamed N. Abouzeid, Ezzat H. Fahmy

Canadian Society for Civil Engineering

Concrete floors can develop faults over time which can cause damage thus hindering smooth transportation, industrial aspects and some residential drawbacks. In addition, flaws and cracks are known to progress into more serious damage with time and use. Self leveling mortar has been used on a relatively limited scale worldwide to allow for more even, higher performance and easy-to-apply flooring. However, there has been little information available with respect to their use and best practices.

The primary focus of this work is to prepare mortar that possesses self-levelling flow characteristics. Hence, several mixtures have been designed using various constituents with …

Mat-731: Mechanical & Durability Properties Of Engineered Cementitious Composites With Different Aggregates, Mohamed A. A. Sherir, Khandaker M. Anwar Hossain, Mohamed Lachemi

Canadian Society for Civil Engineering

This paper presents the outcome of a study conducted to exhibit the effect of micro-silica sand and mortar sand on fresh, mechanical and durability properties of Engineered Cementitious Composites (ECCs). ECC is a ductile concrete characterized by strain hardening and multiple-cracking behavior under tension and shear. This study used locally available aggregates instead of standard micro-silica sand to produce cost-effective, sustainable and green ECC mixtures to be used for construction applications. ECCs prepared by both types of sands exhibited almost similar behaviour in terms of fresh, mechanical and durability properties which indicated the viability of producing ECC mixtures with mortar …

Mat-732: Experimental Study On The Capacity Of Barrier Deck Anchorage In Mtq Pl-3 Barrier Reinforced With Hm-Gfrp Bars With Headed Ends, Michael Rostami, Khaled Sennah, S. Milad Dehnadi

Canadian Society for Civil Engineering

A recent design work conducted at Ryerson University on PL-3 bridge barrier has led to an economical glass fibre reinforced polymer (GFRP) bar detailing for sustainable construction. A PL-3 barrier wall of 27.6 m length was constructed using the proposed GFRP bar configuration, incorporating the use of V-Rod headed-end bars. The proposed barrier configuration was recently crash tested to qualify its use in Canada’s highway bridges. Then, wall segments of this barrier were tested under static loading to-collapse to determine their structural behavior, crack pattern and ultimate load carrying capacity under simulated vehicle impact load. Test results led to establishing …

Mat-734: Increasing The Durability And Resilience Of Tall Buildings With Precast Concrete Enclosure Systems, Randy A. Van Straaten, John F. Straube, C. Alex Lukachko

Canadian Society for Civil Engineering

In this paper precast concrete wall systems are compared to curtain wall and window wall systems in terms of durability and disaster resilience of multi-story buildings. Window wall systems are currently the enclosure system of choice for tall residential buildings in most parts of North America.

Precast concrete wall systems can be expected to last the lifetime of a building with routine seal replacement. These are highly durable systems. Windows within precast concrete wall systems will require replacement in 25-35 years but represent a limited portion of the wall area and hence are less costly and have less impact on …

Mat-735: Optimizing Performance Of Zinc Coated Reinforcing Steel In Concrete Structures, Martin Gagné, Shannon Pole, Frank Goodwin, Gary Dallin

Canadian Society for Civil Engineering

Corrosion of steel reinforcing bar (rebar) is the most significant cause of concrete failure, resulting in expensive repairs and premature structure replacements across the country. This paper will discuss a new, low-cost, zinc coating process for rebar. The properties of this new coated rebar and its contribution to improvement of concrete performance will be presented together with the status of related national and international standards. The Continuous Galvanized Rebar (CGR) coating process is similar to galvanizing of sheet steel. The zinc coating is durable and resistant to abrasion that is routine during transport and construction, but is also highly ductile …

Mat-736: Development Of High Strength Nano-Silica Modified Rubbercrete, Bashar S. Mohammed, Muhd Fadhil Nuruddin, Nasir Shafiq

Canadian Society for Civil Engineering

Several research works have been carried out to study properties of concrete containing crumb rubber (rubbercrete) as a partial replacement to fine aggregate. Rubbercrete exhibits numerous benefits compared to conventional concrete such as lower in density, increased ductility, enhanced plastic capacity, higher toughness, higher impact resistance, better chloride penetration, lower thermal conductivity, higher noise reduction factor and better electrical resistivity. It has also been known to have better energy dissipation, durability and damping ratio. However, the main drawbacks of rubbercrete are decreasing in strengths and Young's modulus. Therefore, to improve strengths of the rubbercrete, the crumb rubber has been pre-coated …

Mat-737: The Use Of Ultrasonic Waves And Analytical Modeling To Estimate Elasticity Modulus Of Rubber Concrete Specimen, Hadda Hadjab, Ahmed Arbia, Oussama Boulekfouf

Canadian Society for Civil Engineering

This research work aims to evaluate the influence of the addition of rubber aggregates on elasticity modulus experimentally by using ultrasonic waves and theoretically by analytical models. Based on ultrasonic waves in concrete specimen at different percentages of rubber granules, one can evaluate the static modulus (Estatic) from the dynamic elastic modulus (Edynamic), according to British code. From the obtained experimental results, one can conclude that the use of rubber granules has the potential for vibration damping capacity. In other words, the rubber granules, reduces the kinetics of ultrasonic pulses in the material. This reduction is due to the decreasing …

Mat-739: Influence Of Slag Chemistry And Composition On The Hydration And Mechanical Properties Of Supersulfated Cement, Rana Masoudi, R. Douglas Hooton

Canadian Society for Civil Engineering

This research evaluates ways of improving early-age property of supersulfated cements. Mechanical performance of SSC was studied after optimizing the slag- calcium sulfate- alkali activator composition. This study was conducted using four slags of different chemical composition. The purpose was to find a correlation between slag composition and compressive strength and determine the influence of anhydrite content and alkali activator content on the hydration process of SSC. The results demonstrated that the compressive strength of mortars was strongly influenced by the Al2O3 content of the slag, which also influenced the optimum mix composition of the SSC mixtures. Mixtures containing slags …

Mat-741: Impact Behaviour Of Shape Memory Alloy Hybrid Fibre-Reinforced Engineered Cementitious Composite, Mohamed A. E. M. Ali, Ahmed M. Soliman, Moncef L. Nehdi

Canadian Society for Civil Engineering

An experimental study was conducted to evaluate the impact behaviour of an innovative hybrid-fibre engineered cementitious composite (ECC) incorporating randomly dispersed short shape memory alloy fibres (SMA). A modified drop weight test was conducted on specimens from various ECC mixtures with and without SMA fibres. The impact behaviour was evaluated and compared based on the ability to dissipate energy and sustain impact load without damage. Results show that the addition of SMA to ECC mixtures significantly enhanced their performance under impact loading. The amount of dissipated energy by ECC increased by about 51% as a result of SMA fibre addition. …

Mat-742: Effect Of Supplementary Cementitious Materials On The Resistance Of Mortar To Physical Sulfate Salt Attack, Semion Zhutovsky, R. Douglas Hooton

Canadian Society for Civil Engineering

Physical sulfate salt attack is one of the most rapid and severe deterioration mechanisms in concrete structures. One of the most common approaches to improve resistance of concrete to sulfate attack is to use supplementary cementitious materials. However, physical salt attack may still cause damage to concrete with supplementary cementitious materials. Moreover, according to some literature sources, some supplementary cementitious materials may even reduce resistance to physical salt attack. The current research investigates the effect of supplementary cementitious materials on the ability of mortars to resist physical sulfate salt attack and its relationship with pore structure and transport properties. Mortar …

Mat-743: Full Scale Manufacturing Of Steel Fibre Reinforced Concrete Pipe, Lui S. Wong

Canadian Society for Civil Engineering

A research project titled “Development of Fibre-Reinforced Concrete Pipes” funded by Con Cast Pipe and Natural Sciences and Engineering Research Council of Canada (NSERC) was conducted between 2011 and 2014 by Professor Moncef Nehdi and his research team at Western University to study the structural behaviour of steel fibre reinforced concrete pipe (SFRCP). 142 pieces of SFRCP, and 58 pieces of conventional reinforced concrete pipe (RCP) and non-reinforced concrete pipe with 300 mm, 450 mm, 600 mm inner diameters were manufactured using existing fully-automated equipment. These SFRCP specimens contain various fibre contents and two fibre types. During the manufacturing week, …

Mat-744: Assessment Of Performance Of Bio Self-Healing Mortar Using Diatomaceous Earth And Silica Fume, Ahmed J. Al Bughdadi, Mohamed N. Abou-Zeid

Canadian Society for Civil Engineering

Cracking represents a major threat for the integrity and performance of structures. Self-healing concept was introduced to construction materials in order to enhance their performance and extend their service life with less repair. This study aims at assessing the performance of Portland cement mortar incorporating self-healing Bacillus Pseudofirmus bacteria using Diatomaceous earth (DE) to immobilize precursor and bacteria in mortar and lowering the pH level of mortar by using silica fume to provide a suitable growth environment for bacteria to generate limestone. The specimens were prepared at three different bacteria dosages and three DE dosages. Cracking of specimens was induced …

Mat-745: The Effect Of Ground Granulated Blast Furnace Slag And Silica Fume On The Durability Of High Performance Concrete In Bridge Decks, Abdulaziz Alaskar, R. Douglas Hooton

Canadian Society for Civil Engineering

High-performance concrete typically has a low water to cementing materials ratio (w/cm), high binder content and may contain high levels of supplementary cementitious materials. The effects of ground granulated blast furnace slag (GGBFS) and silica fume (SF) on the durability of HPC were investigated. In this study, HPC mixtures at 0.33 w/cm were made with two sources of blended cements containing 8% SF mixed with 25 and 50% GGBFS replacements by mass of cement. The compressive strength, drying shrinkage, thermal deformation and transport properties were tested. The preliminary test results have shown that increased fineness of the blended cement enhances …

Mat-752: Field Testing And Evaluation Of Reclaimed Materials As Aggregate For Opss Granular B Type Ii, Adam C. Schneider, Hassan Baaj, Paul Lum, Stephen Senior

Canadian Society for Civil Engineering

In urbanized regions of Ontario, the road construction industry faces a number of challenges due to the growing scarcity of locally-sourced natural aggregate materials and increased restrictions on the approval and development of new aggregate extraction sites. In an effort to maintain sustainable and economical sources of construction aggregates, companies are increasingly seeking to supplement or replace natural aggregates with available artificial materials such as crushed reclaimed concrete aggregate (RCA), and reclaimed asphalt pavement (RAP).

Currently, Ontario Provincial Standard Specification (OPSS) 1010 permits the use of processed reclaimed construction materials in a variety of road base, subbase and asphaltic concrete …

Mat-754: Internal Curing Of High Performance Concrete Using Lightweight And Recycled Concrete Aggregates, Mohamed S. Afifi, Mohamed N. Abou-Zeid

Canadian Society for Civil Engineering

Concrete curing is of paramount importance in order for concrete to meet performance requirements. Conventionally, curing has been conducted by means of water sparkling, wet burlap or a curing compound. For performance and environmental reasons, internal curing has been gaining increased attention. However, more data is needed for the effectiveness of this curing technique when used in various concrete mixtures.

This investigation addresses potential utilization of internal curing in high performance concrete (HPC). Internal curing was introduced by means of three aggregates: perlite, pumice and recycled aggregates; all of which were incorporated into HPC mixtures. Conventional mixtures were prepared and …

Mat-755: Sustainable Road Construction For Heavy Traffic Using High Strength Polymeric Geocells, Sanat K. Pokharel, Meisam Norouzi, Ian Martin, Marc Breault

Canadian Society for Civil Engineering

Construction Sustainability has been the focus of debate ever since the Brundtland commission report ‘Our Common Future’ defined Sustainable Development. Kyoto Protocol and subsequent climate change conferences leading up to the Paris submit this year has put still more emphasis on this agenda. Construction of heavy traffic unpaved access roads require huge amount of aggregate mining and long haulage in the areas of scarce virgin aggregate. Conventional practices in these road constructions seek structural adequacy but never specifically address the sustainability issue. Innovative technology that can reduce the volume of aggregate material while maintaining the structural integrity is required to …

Mat-756: Investigation Of The Impact Of Rap Gradation On The Effective Binder Content In Hot Mix Asphalt, Saeed S. Saliani, Alan Carter, Hassan Baaj

Canadian Society for Civil Engineering

Nowadays, it is common to add a little amount of Reclaimed Asphalt Pavement (RAP) in asphalt mixes without changing too much properties such as modulus and low temperature cracking resistance. Not only will those mixes be able to make roads last longer, but they will be a greener alternative to usual mixes. In order to make a flexible pavement design, the mixture behavior is usually characterized with the complex modulus. To have a high modulus mix, you need to control the gradation precisely even when RAP is added. When performing a mix design to incorporate RAP, it is desirable to …

Mat-758: Constructability Benefits Of The Use Of Lightweight Foamed Concrete Fill (Lfcf) In Pavement Applications, Michael L. J. Maher, John B. Hagan

Canadian Society for Civil Engineering

Lightweight Foamed Concrete Fill (LFCF), also known as cellular concrete, has been growing in use in transportation infrastructure projects over recent years. LFCF is a versatile construction material that has now been in use for over 30 years. A number of recent road rehabilitation projects have demonstrated some of the benefits of use. With a greater emphasis on sustainability on all provincial and municipal road projects, new solutions are being sought to minimize the generation of waste and deliver better performing pavements that require less maintenance interventions. Roads over peat and organic deposits pose challenges for road agencies. They are …

Mat-759: Particle Size Analysis As A Means To Better Understand The Influence Of Fly Ash Variability In Concrete, Yasar Abualrous, Daman K. Panesar, R. Doug Hooton, Bhupinder Singh

Canadian Society for Civil Engineering

Fly ash is generated from thermal power stations as an industrial by-product of coal combustion materials. Its particles are generally glassy, spherical in shape, and typically range in size from 0.5-300 µm. Coal fly ash is widely used as a partial cementitious material in concrete, which not only offers economic and environmental benefits but also improves concrete performance. However, variability of the physical description and chemical composition of fly ash has been considered to be a major barrier to its increased use in cement and concrete. In this study the variability and properties of fly ash are characterized with an …

Mat-760: Comparison Of Laboratory Performance Tests Used To Assess Alkali-Silica Reactivity, Farideh Golmakani, R. Douglas Hooton

Canadian Society for Civil Engineering

Alkali-silica reaction of certain concrete aggregates can lead to premature deterioration and maintenance problems in concrete structures. The CSA A23.1-14A/ASTM C1293 concrete prism test (CPT) and the CSA A23.2-25A/ASTM C1260/ASTM C1567 accelerated mortar bar test (AMBT) are the two main procedures used in CSA and ASTM standards for examining the potential alkali-silica reactivity (ASR) of aggregates and also for assessing the effectiveness of supplementary cementing materials (SCMs) in suppressing ASR. The long testing duration of the CPT and the unreliability of the rapid AMBT have led to development and evaluation of a third method, the accelerated concrete prism test (ACPT). …

Mat-761: The Effect Of Temperature On The Lateral Response Of Unbonded Fiber-Reinforced Elastomeric Isolators, Alexander N. Sciascetti, Yasser M. Al-Anany, Michael J. Tait

Canadian Society for Civil Engineering

Base isolation is a method that can be employed to significantly reduce the demands on a structure during a seismic event. This method has shown considerable success in reducing the adverse effects of earthquakes, including damage and loss of life. The main concept of base isolation is to reduce the seismic demand on a structure by placing isolators beneath the superstructure at points where load is transferred to the foundation. One of the most commonly used types of isolator is the elastomeric isolator. These isolators are traditionally comprised of layers of elastomer and steel. More recently, research has been completed …

Mat-763: Assessment Of Ultra-High Performance Fibre Reinforced Concrete- Normal Strength Concrete Or High Strength Concrete Composite Members In Chloride Environment, Luaay Hussein, Lamya Amleh

Canadian Society for Civil Engineering

The purpose of this study was to investigate the performance of composite members of ultra-high performance fibre-reinforced concrete (UHPFRC) and normal strength or high strength concrete (NSC/HSC) in chloride environments. Experimental studies were carried out on UHPFRC-NSC/HSC prisms in order to investigate the effect of dry and wet cycles on the flexural capacity of those composite members. Each prism specimen was designed with the UHPFRC layer in tension and the NSC/HSC layer in compression. Three fibre volume contents (1%, 1.5%, and 2%) were investigated. The test results revealed that the degradation in the flexural capacity of UHPFRC-NSC/HSC specimens after exposure …

Structural Identification Of An Elevated Water Tower, James Thomas Norris

Graduate Theses and Dissertations

Elevated water tanks are generally located at higher elevations within a particular geographic area. The location and height of these structures often makes them desirable for installing wireless and cellular communications antennas. The impact of this practice on the long-term serviceability performance of the primary structure is not clear and could be an important consideration deserving further analysis. This paper presents a case study of an elevated water tank that was motivated by this particular consideration. The structure had been retrofitted with cellular antennas during its service and later experienced fatigue cracking at the fill pipe-tank interface. The owner wished …

Bs News May/June

Building Services Engineering

No abstract provided.

Developing Standard Procedures For Structural Aspects Of Slide-In Bridges In Accelerated Bridge Construction (Abc), Ozan Utku Ridvanoglu

Masters Theses

Slide-in bridge construction (SIBC) is a special method especially used to replace an existing bridge with the minimum duration road closure. In this method, new bridge superstructure is built next to the existing one and it is slid to its final position after demolishing the existing one. Applied implementations of SIBC show that several complications are experienced during bridge slide related with surface interaction. There is a need to evaluate the structural components of SIBC to develop suggestions. In this research, structural components of SIBC were investigated. The research dealt with completed SIBC implementations and numerical modelling of the slide …

Storm Damage - Sr-57 June 2008, Dale Sedler, Mark Bailey

Purdue Road School

A review of the impact of the White River leaving its watershed and destroying a box culvert under SR-57 in Greene County, IN. Includes discussion about impact of illegal levee, and photos and discussion on contraction scour.

Storm Damage - Murphy's Law, Dale Sedler, Mark Bailey

Purdue Road School

Examination of a disastrous event that required 4 coinciding occurrences happening that individually would likely have resulted in minor or no damage.

Storm Damage - Floating Culverts, Dale Sedler, Mark Bailey

Purdue Road School

A review of buoyancy issues culverts experience due to blockage. Includes discussion of blockage due to floating debris and issues with multiple culverts. Provides information on characteristics that help to determine if a culvert has "floated."

Bs News March/April

Building Services Engineering

No abstract provided.