Research Materials (Civil & Environmental Engineering)

2018-04-01

Raoufi, Mohammad, Fayek, Aminah Robinson

Construction crew performance is a function of both motivation and the situation in which tasks are performed. However, previous research in construction has not comprehensively investigated situational/contextual factors and their impact on the relationship between motivation and performance....

2021-05-08

Yirgu, Kaleab Woldeyohannes, Kim, Amy M., Ryerson, M.S.

Following airline mergers and network reorganizations aimed at reducing operational costs, consolidated air services at large hub airports have encouraged air travelers to forego use of their smaller local airports to access large hub airports offering superior air services farther away. This...

2019-11-12

Cabral, L., Kim, A. M., Shirgaokar, M.

Studies have shown that a network of safe, connected, and direct facilities can increase urban cycling levels. During summer 2017, the city of Edmonton, Canada, constructed nearly 20 kilometers of protected bicycle lanes on its core neighborhood streets. A rapid and coordinated network...

2019-01-01

Xiaoxuan Yu, Korris Lee, Ania C. Ulrich

Naphthenic acids (NAs) originate from bitumen and are considered a major contributor to acute toxicity in oil sands process-affected water (OSPW) produced from bitumen extraction processes. To reclaim oil sands tailings and remediate OSPW, in-pit fluid fine tailings can be water-capped as end pit...

2021-08-03

Seresht, Nima Gerami, Fayek, Aminah Robinson

Predicting and optimizing performance in earthmoving operations is critical, because they are essential to many construction projects. The complexity of modeling earthmoving operations remains challenging, even with several modeling techniques available, including simulation. This paper advances...

2020-01-01

Xiaofei Lv, Bin Ma, Dena Cologgi, Korris Lee, Ania Ulrich

Seepage from oil sands tailings ponds (OSTP), which contain toxic naphthenic acids (NAs), can infiltrate into groundwater. Clay sediment layer beneath is a critical barrier for reducing the infiltration of NAs into the sand sediment layer, where groundwater channels reside. Biodegradation has...

2024-11-01

Wong, Andy H., Sharma, Davesh, Kilani, Omar, Rad, Faeze Momeni, Wong, Stephen D., Kwon, Tae J., El-Basyouny, Karim

Inclement winter weather poses a safety risk to all road users, primarily due to roads covered with snow or ice and substantially reduced visibility. The winter road maintenance vehicles used are often larger and slower moving than the surrounding traffic and often become a hazard themselves. To...

2020-08-01

Seresht, Nima Gerami, Fayek, Aminah Robinson

The performance of construction systems (e.g., activities, operations, projects) is commonly measured using different indicators, such as productivity or production rate. The accurate prediction of performance, which is an important concern of construction researchers and practitioners, requires...

2017-01-01

Ehsan Rahmati, Alireza Nouri, Vahidoddin Fattahpour, Japan Trivedi

This paper investigates the effect of anisotropic behavior of caprock shales on the caprock failure pressure in SAGD projects. Shales and mudstones exhibit strong anisotropy at the micro and macro scales. However, the anisotropic behavior has been neglected in the existing published works on...

2017-01-01

Ehsan Rahmati, Alireza Nouri, Vahidoddin Fattahpour, Japan Trivedi

There has been an increasing awareness of the importance of caprock integrity during Steam Assisted Gravity Drainage (SAGD) operations. However, mathematical tools that have been developed for caprock integrity studies have not incorporated an important characteristic of cap shales, which is...