This page has only limited features, please log in for full access.

Unclaimed
Zain Ul-Abdin
Tractebel (Engie), 1000 Brussels, Belgium

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 24 August 2021 in Sustainability
Reads 0
Downloads 0

Concrete is a popular building material all over the world, but because of different physiochemical processes, it is susceptible to crack development. One of the primary deterioration processes of reinforced concrete buildings is corrosion of steel bars within the concrete through these cracks. In this regard, a self-healing technique for crack repair would be the best solution to reduce the penetration of chloride ions inside concrete mass. In this study, a rapid chloride migration (RCM) test was conducted to determine the self-healing capacity of cracked mortar. With the help of the RCM test, the steady-state migration coefficient of cracked and uncracked specimens incorporating expansive and crystalline admixtures was calculated. Based on the rate of change of the chloride ion concentrations in the steady-state condition, the migration coefficient was calculated. Furthermore, bulk electrical conductivity tests were also conducted before and after the migration test to understand the self-healing behavior. It was evident from the test results that the self-healing of cracks was helpful to reduce the penetration of chloride ions and that it enhanced the ability of cracked mortar to restrict the chloride ingress. Using this test method, the self-healing capacity of the new self-healing technologies can be evaluated. The RCM test can be an acceptable technique to assess the self-healing ability of cement-based materials in a very short period, and the self-healing capacity can be characterized in terms of the decrease of chloride migration coefficients.

ACS Style

Fahad Ul Rehman Abro; Abdul Salam Buller; Tariq Ali; Zain Ul-Abdin; Zaheer Ahmed; Noor Ahmed Memon; Ali Raza Lashari. Autogenous Healing of Cracked Mortar Using Modified Steady-State Migration Test against Chloride Penetration. Sustainability 2021, 13, 9519 .

AMA Style

Fahad Ul Rehman Abro, Abdul Salam Buller, Tariq Ali, Zain Ul-Abdin, Zaheer Ahmed, Noor Ahmed Memon, Ali Raza Lashari. Autogenous Healing of Cracked Mortar Using Modified Steady-State Migration Test against Chloride Penetration. Sustainability. 2021; 13 (17):9519.

Chicago/Turabian Style

Fahad Ul Rehman Abro; Abdul Salam Buller; Tariq Ali; Zain Ul-Abdin; Zaheer Ahmed; Noor Ahmed Memon; Ali Raza Lashari. 2021. "Autogenous Healing of Cracked Mortar Using Modified Steady-State Migration Test against Chloride Penetration." Sustainability 13, no. 17: 9519.

Journal article
Published: 01 December 2020 in Proceedings of the Institution of Civil Engineers - Transport
Reads 0
Downloads 0

An advanced design classification system for bicycle paths, based on geometric features and a force equilibrium, can pave the way for improved bicycle safety, accident prevention and design guidelines. Design and classification system exists for bicycle paths, but numerous accidents create ambivalence about its validity and effectiveness. Still, a universally accepted classification system has not yet been approved or adopted now. This manuscript presents a unique set of design parameters, analytically developed based on formulas which considers the physical characteristics and dimensions of individual bicycles. The proposed design system is based on theoretical trigonometric derivations. Later, the model is validated with the real-world geometry of the transportation infrastructure of the city of Antwerp, Belgium. The conclusions of this study are useful for evaluating the effectiveness of bicycle paths during design stage without the necessity for real-world experiments. This study will thus be valuable for stakeholders working on policy framework, bicycle safety, and riding comfort.

ACS Style

Zain Ul-Abdin; Sarmad Zaman Rajper; Ken Schotte; Pieter De Winne; Hans De Backer. Analytical geometric design of bicycle paths. Proceedings of the Institution of Civil Engineers - Transport 2020, 173, 361 -379.

AMA Style

Zain Ul-Abdin, Sarmad Zaman Rajper, Ken Schotte, Pieter De Winne, Hans De Backer. Analytical geometric design of bicycle paths. Proceedings of the Institution of Civil Engineers - Transport. 2020; 173 (6):361-379.

Chicago/Turabian Style

Zain Ul-Abdin; Sarmad Zaman Rajper; Ken Schotte; Pieter De Winne; Hans De Backer. 2020. "Analytical geometric design of bicycle paths." Proceedings of the Institution of Civil Engineers - Transport 173, no. 6: 361-379.

Journal article
Published: 18 November 2019 in Sustainability
Reads 0
Downloads 0

Risk perception influences cycling attributes toward its adoption. Researchers are investigating attributes associated with risk formation. In this study, various attributes were selected which influence the user’s formation of risk perception. For this purpose, an online questionnaire survey was conducted in Flanders, among all segments of the population (N = 774). Participants were asked questions for attributes relating to risk formation. Results suggested that risk formation among users evolves around tangible to non-tangible attributes. The spectrum of risk perception was developed which visualizes risk evolution, considering various attributes. Surprisingly, elements such as “comfort”, surface evenness, and policies were rated as being neutral. Infrastructure and the presence of opposite road users tend to be foreseen as critical factors for risk formation. Risk perception varies depending upon psychometric paradigm shifts, such as dread and unknown risk. This strange notion is considered to lie in a space between dread and unknown risk. This explains the difference in risk perception, knowingly or not knowingly (subconsciously), yet expressing cognitively and evolving inside. This is an interesting finding, but reasons behind such a motive need to be explained. A possible explanation behind such behavior is that people tend to change their responses due to knowledge acquisition during the survey.

ACS Style

Zain Ul-Abdin; Pieter De Winne; Hans De Backer. Risk-Perception Formation Considering Tangible and Non-Tangible Aspects of Cycling: A Flemish Case Study. Sustainability 2019, 11, 6474 .

AMA Style

Zain Ul-Abdin, Pieter De Winne, Hans De Backer. Risk-Perception Formation Considering Tangible and Non-Tangible Aspects of Cycling: A Flemish Case Study. Sustainability. 2019; 11 (22):6474.

Chicago/Turabian Style

Zain Ul-Abdin; Pieter De Winne; Hans De Backer. 2019. "Risk-Perception Formation Considering Tangible and Non-Tangible Aspects of Cycling: A Flemish Case Study." Sustainability 11, no. 22: 6474.

Journal article
Published: 05 February 2019 in Applied Sciences
Reads 0
Downloads 0

For welded bridge components, the knowledge of residual stresses induced by welding is essential to determine their effect on the fatigue life behavior resulting in optimal fatigue design and a better knowledge about the fatigue strength of these welded connections. The residual stresses of a welded component in an orthotropic steel bridge deck are determined with the incremental hole-drilling method. This method is specified by the American Society for Testing and Materials ASTM E837-13a and it can be used only when the material behavior is linear-elastic. However in the region of the bored hole, there are relaxed plastic strains present that can lead to significant error of the measured stresses. The hole-drilling procedure is simulated with three-dimensional finite element modeling including a simplistic model of plasticity. The effect of plasticity on uniform in-depth residual stresses is determined and it is concluded that residual stresses obtained under the assumption of linear-elastic material behavior are an overestimation. Including plasticity for non-uniform in-depth residual stress fields results in larger tensile and smaller compressive residual stresses. Larger tensile residual stresses cause premature fatigue failure. Therefore, it is important to take these larger tensile residual stresses into account for the fatigue design of a welded component.

ACS Style

Evy Van Puymbroeck; Wim Nagy; Ken Schotte; Zain Ul-Abdin; Hans De Backer. Determination of Residual Welding Stresses in a Steel Bridge Component by Finite Element Modeling of the Incremental Hole-Drilling Method. Applied Sciences 2019, 9, 536 .

AMA Style

Evy Van Puymbroeck, Wim Nagy, Ken Schotte, Zain Ul-Abdin, Hans De Backer. Determination of Residual Welding Stresses in a Steel Bridge Component by Finite Element Modeling of the Incremental Hole-Drilling Method. Applied Sciences. 2019; 9 (3):536.

Chicago/Turabian Style

Evy Van Puymbroeck; Wim Nagy; Ken Schotte; Zain Ul-Abdin; Hans De Backer. 2019. "Determination of Residual Welding Stresses in a Steel Bridge Component by Finite Element Modeling of the Incremental Hole-Drilling Method." Applied Sciences 9, no. 3: 536.

Conference paper
Published: 20 September 2018 in IOP Conference Series: Materials Science and Engineering
Reads 0
Downloads 0

When adopting the trapezoidal section of ribs in orthotropic steel decks, the torsional rigidity of ribs losses radically because of rib distortion especially when the load is eccentric from the axis of the rib. Hence, the rib distortion causes high stress concentrations at the rib-to-crossbeam joint which makes this joint easily prone to fatigue. In this paper, the influence of 4 conventional design parameters on distortional behaviour is investigated by numerical simulation adopting the hot spot stress approach and the sub-model analysis technique. A refined finite element model of an orthotropic steel deck specimen with the dimension of 8.2 m × 4.1 m is built. Research results indicate that the distortional stress rises with the increment of the spacing of crossbeam or the weld length of rib-to-crossbeam joint. The thickness of rib is negatively correlated with the distortional stress. The influence of the spacing of rib on distortional stress depends on the relative size between the width of load area and the spacing of rib. The most unfavourable load position is determined by rib geometries, i.e. the thickness of ribs, whereas rest three parameters do not have obvious influence.

ACS Style

Heng Fang; Evy Van Puymbroeck; Nouman Iqbal; Zain Ul-Abdin; Hans De Backer. Numerical simulation of rib distortion in orthotropic steel decks. IOP Conference Series: Materials Science and Engineering 2018, 419, 012012 .

AMA Style

Heng Fang, Evy Van Puymbroeck, Nouman Iqbal, Zain Ul-Abdin, Hans De Backer. Numerical simulation of rib distortion in orthotropic steel decks. IOP Conference Series: Materials Science and Engineering. 2018; 419 (1):012012.

Chicago/Turabian Style

Heng Fang; Evy Van Puymbroeck; Nouman Iqbal; Zain Ul-Abdin; Hans De Backer. 2018. "Numerical simulation of rib distortion in orthotropic steel decks." IOP Conference Series: Materials Science and Engineering 419, no. 1: 012012.

Conference paper
Published: 11 July 2018 in International Conference on Transportation and Development 2018
Reads 0
Downloads 0

Ride quality under different pavement conditions is considered critical for adoption and modal shift for bicycle users. Vertical vibration and road roughness values have severe impact on user perception and ride quality. Ride quality depends upon subjective ratings of pavement conditions and quantitative values for surface conditions. Bicycle use in Flanders, Belgium, is considered prominent. In order to stimulate bicycle adoption, governments consider different policy measures. But those policy measures remain insignificant if the user comfort levels are not determined for the current infrastructure. Subjective ratings were collected from 40 different bicycling sections of Flemish cycling infrastructure. The survey reveals critical information regarding bicyclists and surface conditions. Regression models were developed, predicting the comfort level for riding on Flemish bicycle paths. The results reveal good correlation between the evenness coefficient, the roughness, and the subjective ratings for bicycle users under different pavement conditions, i.e., asphalt, concrete, and block pavements. This comfort rating system can be used by transportation planners and government officials. Based on the developed rating system, transportation professionals can determine the comfort levels of different pavement conditions for bicycle paths.

ACS Style

Zain Ul-Abdin; Hans De Backer; Pieter De Winne; Sarmad Zaman Rajper. Ride Quality for Bicycle Paths under Different Pavement Conditions. International Conference on Transportation and Development 2018 2018, 1 .

AMA Style

Zain Ul-Abdin, Hans De Backer, Pieter De Winne, Sarmad Zaman Rajper. Ride Quality for Bicycle Paths under Different Pavement Conditions. International Conference on Transportation and Development 2018. 2018; ():1.

Chicago/Turabian Style

Zain Ul-Abdin; Hans De Backer; Pieter De Winne; Sarmad Zaman Rajper. 2018. "Ride Quality for Bicycle Paths under Different Pavement Conditions." International Conference on Transportation and Development 2018 , no. : 1.

Conference paper
Published: 01 January 2018 in IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures
Reads 0
Downloads 0
ACS Style

Hans De Backer; Amelie Outtier; Gilles Van Staen; Evy Van Puymbroeck; Zain Ul-Abdin. Skew Placement of Arches with respect to the Bridge Deck. IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures 2018, S5 -183.

AMA Style

Hans De Backer, Amelie Outtier, Gilles Van Staen, Evy Van Puymbroeck, Zain Ul-Abdin. Skew Placement of Arches with respect to the Bridge Deck. IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures. 2018; ():S5-183.

Chicago/Turabian Style

Hans De Backer; Amelie Outtier; Gilles Van Staen; Evy Van Puymbroeck; Zain Ul-Abdin. 2018. "Skew Placement of Arches with respect to the Bridge Deck." IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures , no. : S5-183.

Conference paper
Published: 06 August 2017 in High Tech Concrete: Where Technology and Engineering Meet
Reads 0
Downloads 0

In order to increase the structural performance, various techniques are being evaluated, tested and adopted. Structures exposed to adverse environmental conditions, are facing issues i.e. lifespan reduction and pre-mature failure. World-wide polyester resin is considered to be applied for re-novation, repair, especially for structural elements which are facing environmental degradation. This manuscript evaluates the quantitative performance of resin as a coating agent on mortar, under different controlled conditions. The experiment involved casting of specimens, coating 1–3 layers polyester resin on samples, exposure to environmental conditions and water. Compressive strength provide evidence that resin coats increased compressive strength of cubes by 69%. Whilst significant water absorption reduction was also noted which is proportional to number of coats. Univariate general linear model were evaluated by with respect to various parameters on the two conditions i.e. ambient environment and exposure to water. This study concludes that polyester resin may be used in primary structural element members, which are exposed to different environmental scenarios.

ACS Style

Zain Ul-Abdin; Sarmad Zaman Rajper; Pieter De Winne; Ken Schotte; Hans De Backer. Impact of Different Conditions on Resin Coated Mortar. High Tech Concrete: Where Technology and Engineering Meet 2017, 259 -263.

AMA Style

Zain Ul-Abdin, Sarmad Zaman Rajper, Pieter De Winne, Ken Schotte, Hans De Backer. Impact of Different Conditions on Resin Coated Mortar. High Tech Concrete: Where Technology and Engineering Meet. 2017; ():259-263.

Chicago/Turabian Style

Zain Ul-Abdin; Sarmad Zaman Rajper; Pieter De Winne; Ken Schotte; Hans De Backer. 2017. "Impact of Different Conditions on Resin Coated Mortar." High Tech Concrete: Where Technology and Engineering Meet , no. : 259-263.