Investigation of Resilience Characteristics of Unbound Granular Materials for Sustainable Pavements

Salamat Ullah, Arshad Jamal, Meshal Almoshaogeh, Fawaz Alharbi and Jawad Hussain
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Salamat Ullah: Civil Engineering Department, Abasyn University, Islamabad 44000, Pakistan
Arshad Jamal: Transportation and Traffic Engineering Department, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam 31451, Saudi Arabia
Meshal Almoshaogeh: Department of Civil Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi Arabia
Fawaz Alharbi: Department of Civil Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi Arabia
Jawad Hussain: Department of Civil Engineering, University of Engineering and Technology, Taxila 47050, Pakistan

Sustainability, 2022, vol. 14, issue 11, 1-20

Abstract: In this study, a comprehensive laboratory testing program was designed to study the resilience characteristics of unbound granular materials (aggregate base coarse) using the repeated load triaxial test (RLTT). During the experimental program, the resilient modulus of unbound granular material was examined using different moisture content levels, material gradation using Fuller’s equation, and stress levels. The results show that the moisture content, material gradation, and stress level have a major influence on the resilient modulus of unbound granular materials. Furthermore, a linear model has been developed between moisture content and the resilient modulus. The model significantly predicts the change in resilient modulus by changing moisture content. The study also aimed to improve the modified Uzan model by adding the effect of moisture content. An improved modified Uzan stress moisture model has been developed, which shows a strong relationship between the resilient modulus, stress, and moisture content. This study can be used as a benchmark for validating other numerical data.

Keywords: sustainable structure design; sustainable materials; resilient modulus; gradation coefficient; repeated load triaxial test; optimum moisture content; unbound granular material (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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