Effects of Curing Temperature on the Engineering Properties of Cement Treated Lateritic Soil

Sani J. E., A. Abdullahi, G. Moses, Z. I. Ummisawa

Abstract


This study investigated the engineering properties of lateritic soil stabilized with cement under different curing temperatures, compactive efforts, and curing durations. The natural soil exhibited Maximum Dry Density (MDD) values of 1.68 Mg/m³ to 1.71 Mg/m3, 1.76 Mg/m³ to a maximum value of 1.796 Mg/m3, and 1.87 Mg/m³ to 1.96Mg/m3 all at 6% cement treatment under British Standard Light (BSL), West African Standard (WAS), and British Standard Heavy (BSH) compactive efforts, respectively, For all the compactive efforts the BSL, WAS and BSH the OMC increased from 20.20%,15.90% and 14.20% for the natural soil to peak values of 25.3% at 6% cement, 19.8% at 8% cement and 15.9% at 8% cement, respectively. The natural soil recorded UCS values of 335.25 kN/m², 400 kN/m², and 537 kN/m² under BSL, WAS, and BSH compaction at 25°C. The UCS values increased progressively with cement content, curing time, and compactive effort. At 7 days curing, the highest UCS values were recorded at 8% cement, reaching 899 kN/m², 1232 kN/m², and 1541 kN/m² under BSL, WAS, and BSH compactive efforts respectively. At 14 days curing, substantial strength development occurred, with the highest value of 2002 kN/m² obtained at 8% cement under BSH compaction and curing temperature of 25°C. The results indicate that moderate curing temperature (25°C), higher compactive effort, and adequate cement content significantly improve the strength and performance of lateritic soil. 


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References


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