Research Materials (Civil & Environmental Engineering)

2018-01-01

Mojtaba Rahimi, Dave Chan, Alireza Nouri

An elastoplastic constitutive model within the framework of bounding surface plasticity theory is adopted to predict the mechanical behaviour of soft sandstone under monotonic and cyclic loadings. In this model, the loading surface always passes through the current stress state regardless of the...

2020-05-17

Ohi, Sabrena Jahan, Kim, Amy M.

This paper explores the application of count models to represent the relationship between flight disruptions and weather. Throughout the world, flights are regularly disrupted by delays at airports and in the terminal airspace, and less frequently by diversions and cancelations. Many delay...

2020-01-01

Morteza Roostaei, Alireza Nouri, Vahidoddin Fattahpour, Dave Chan

This paper focuses on the study of proppant transport mechanisms in fractures during frac-packing operation. A multi-module, numerical proppant, reservoir and geomechanics simulator has been developed, which improves the current numerical modeling techniques for proppant transport. The modules...

2018-03-22

Julie D. Zettl, Dr. Lianne M. Lefsrud, Dr. Michael T. Hendry, Kathleen E. Baker, Dr. Renato Macciotta Pulisci

Efforts related to the safety and performance of oil sands tailings storage and transportation facilities have traditionally focused on preventing catastrophic failures. However, a recent death related to ground hazards near oil sands tailings facilities, dykes, and transport systems illustrates...

2019-11-12

Kim, A., Hansen, M.

This paper introduces an empirically driven, non-parametric method to isolate and estimate the effects that changes in demand and changes in throughput have on delay – in particular, arrival and departure flight delay at airport runways. Classical queuing model concepts were used to develop a...

2019-01-01

Chenxi Wang, Jesus D. Montero Pallares, Mohammad Haftani, Alireza Nouri

Stand-alone screens (SAS) have been widely used in steam assisted gravity drainage (SAGD) operations. Although many researchers investigated the flow performance of SAS through sand control tests, the formation damage (pore plugging) due to fines migration has not been characterized under...

2021-08-15

Somi, Sahand, Seresht, Nima Gerami, Fayek, Aminah Robinson

As worldwide goals for sustainable development expand, numerous countries are investing in renewable energy projects, particularly onshore and offshore wind farm projects, which have low adverse environmental impacts. Since onshore wind farm projects are novel types of energy infrastructure...

2021-04-13

Gebretekle, Yisshak Tadesse, Kamau, Daniel Waweru, Raoufi, Mohammad, Fayek, Aminah Robinson

The construction industry is entering the digital age, which offers innovative digitalization opportunities (DOs) regarding cost efficiency, project management, and improved client experience. In their early efforts to implement DOs, construction organizations have had varying degrees of success,...

2017-01-01

Yifei Cui, Dave Chan, Alireza Nouri

This paper presents a numerical scheme for a solid–fluid coupled discrete-element method (DEM) that takes into consideration solid deformation and pore pressure generation and dissipation. Analytical solutions of conventional soil mechanics examples obtained by oedometer testing are used to...

2018-07-12

Seresht, Nima Gerami, Fayek, Aminah Robinson

Construction productivity is a major research interest within the construction domain. Because construction is a labor-intensive industry, previous research has often focused on construction labor productivity (CLP). However, equipment is the main driver of productivity for some construction...