Strength and Durability of Cement-Treated Lateritic Soil

Norshakila Abdul Wahab, Mohammad Jawed Roshan, Ahmad Safuan A. Rashid, Muhammad Azril Hezmi, Siti Norafida Jusoh, Nik Daud Nik Norsyahariati and Sakina Tamassoki
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Norshakila Abdul Wahab: Department of Geotechnics and Transpiration, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Mohammad Jawed Roshan: Department of Geotechnics and Transpiration, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Ahmad Safuan A. Rashid: Department of Geotechnics and Transpiration, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Muhammad Azril Hezmi: Department of Geotechnics and Transpiration, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Siti Norafida Jusoh: Department of Geotechnics and Transpiration, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Nik Daud Nik Norsyahariati: Department of Civil Engineering, University Putra Malaysia, Selangor 43400, Malaysia
Sakina Tamassoki: Faculty of Transportation Engineering, Kabul Polytechnic University, Kabul 1001, Afghanistan

Sustainability, 2021, vol. 13, issue 11, 1-23

Abstract: The transportation infrastructure, including low-volume roads in some regions, needs to be constructed on weak ground, implying the necessity of soil stabilization. Untreated and cement-treated lateritic soil for low-volume road suitability were studied based on Malaysian standards. A series of unconfined compressive strength (UCS) tests was performed for four cement doses (3%, 6%, 9%, 12%) for different curing times. According to Malaysian standards, the study suggested 6% cement and 7 days curing time as the optimum cement dosage and curing time, respectively, based on their 0.8 MPa UCS values. The durability test indicated that the specimens treated with 3% cement collapsed directly upon soaking in water. Although the UCS of 6% cement-treated specimens decreased against wetting–drying (WD) cycles, the minimum threshold based on Malaysian standards was still maintained against 15 WD cycles. On the contrary, the durability of specimens treated with 9% and 12% cement represented a UCS increase against WD cycles. FESEM results indicated the formation of calcium aluminate hydrate (CAH), calcium silicate hydrate (CSH), and calcium aluminosilicate hydrate (CASH) as well as shrinking of pore size when untreated soil was mixed with cement. The formation of gels (CAH, CSH, CASH) and decreasing pore size could be clarified by EDX results in which the increase in cement content increased calcium.

Keywords: lateritic soil; low volume road; cement; UCS; durability; FESEM; EDX (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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