Performance evaluation of stabilized base courses comprising TSRU materials and bitumen froth derived from Alberta oil sands

Author:

Sheonty Sabrina Rashid1,Saleh Mohamed1,Kamran Farshad1ORCID,Moghaddam Taher Baghaee2,Hashemian Leila3ORCID

Affiliation:

1. Department of Civil and Environmental Engineering, University of Alberta, 1-060 Markin/CNRL Natural Resources Engineering Facility, 9105116 Street NW, Edmonton, AB T6G 2W2, Canada

2. Department of Civil and Environmental Engineering, University of Alberta, 7-370 Donadeo Innovation Centre for Engineering, 9211116 Street NW, Edmonton, AB T6G 1H9, Canada

3. Department of Civil and Environmental Engineering, University of Alberta, 7-255 Donadeo Innovation Centre for Engineering, 9211116 Street NW, Edmonton, AB T6G 1H9, Canada

Abstract

In this research, the properties of two tailings solvent recovery unit (TSRU) samples, one bitumen froth sample and two aggregates, are evaluated using various laboratory tests. The TSRU-modified mixtures are prepared at different concentrations of bitumen froth (0%–6% of weight of mixture increasing in 1% intervals) where TSRU materials were added based on optimum moisture content of the mixture. The properties of the mixtures are investigated using indirect tensile strength and Marshall stability tests. The results show that TSRU modification results in a higher tensile strength. The granular layer thickness can be reduced by 42% and 60% for modified samples made with both aggregates. It should be noted that the modified samples fail to meet the soaked indirect tensile strength requirement. A potential solution to improve the indirect tensile strength of the soaked mixture is using cementitious additives such as Portland cement.

Publisher

Canadian Science Publishing

Subject

General Environmental Science,Civil and Structural Engineering

Reference39 articles.

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