Evaluation of Conventional and Sustainable Modifiers to Improve the Stiffness Behavior of Weak Sub-Grade Soil

Syed Taseer Abbas Jaffar, Malik Muneeb Abid, Sikander Zaman Khan, Turab Jafri, Zia Ur Rehman, Muhammad Atiq Ur Rehman Tariq and Anne W. M. Ng
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Syed Taseer Abbas Jaffar: Department of Civil Engineering, University of Management & Technology, Lahore 54000, Pakistan
Malik Muneeb Abid: Department of Civil Engineering, Faculty of Engineering and Technology, University of Sargodha, Sargodha 40100, Pakistan
Sikander Zaman Khan: Department of Civil Engineering, Faculty of Engineering and Technology, University of Sargodha, Sargodha 40100, Pakistan
Turab Jafri: NUST Institute of Civil Engineering, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
Zia Ur Rehman: Department of Transportation Engineering and Management, Faculty of Civil Engineering, UET Lahore, Lahore 54000, Pakistan
Muhammad Atiq Ur Rehman Tariq: College of Engineering and Science, Victoria University, Melbourne, VIC 8001, Australia
Anne W. M. Ng: College of Engineering, IT & Environment, Charles Darwin University, Darwin, Ellengowan Dr, Brinkin, NT 0810, Australia

Sustainability, 2022, vol. 14, issue 5, 1-19

Abstract: The paper focuses on the improvement of the clayey soil (A-6) with the locally available and cheap modifiers, in terms of stiffness behavior of the weak subgrade soil for flexible pavement. The modifiers used include lime (hydrated), marble waste and sand. The soil specimens underwent triaxial testing and Clegg impact testing. Triaxial testing involved the assessment of the resilient modulus (M R ) and impact testing using the Clegg Impact Hammer. According to the study, lime proved to be the most influencing modifier as it improves the stiffness of the weak soil better than other modifiers. A quite accurate statistical relationship between the M R and the variables (including Clegg Impact) involved in the testing procedure has been established

Keywords: flexible pavements; resilient modulus (M R ); subgrade; modifiers; triaxial test (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 (4)

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