A. O. Eberemu, A. A. Amadi and K. J. Osinubi, “The Use of Compacted Tropical Clay Treated with Rice Husk Ash as a Suitable Hydraulic Barrier Material in Waste Containment Applications,” Accepted for presentation at the ‘International Conference on Waste Management in Developing Countries and Transient Economies Mauritius, Africa’, 5-9 September 2011.

has been cited by the following article:

• TITLE: Consolidation Properties of Compacted Lateritic Soil Treated with Rice Husk Ash

  AUTHORS: Adrian. O. Eberemu

  KEYWORDS: Coefficient of Volume Change; Coefficient of Volume Compressibility; Compression Index; Consolidation; Pre-Consolidation Pressure, Rice Husk Ash; Swell Index

  JOURNAL NAME: Geomaterials, Vol.1 No.3, October 25, 2011

  ABSTRACT: One dimensional laboratory consolidation test was conducted on compacted lateritic soils treated with up to 16% rice husk ash (RHA), to assess its consolidation properties. Specimens were prepared at three different moulding water contents (2% dry of optimum, optimum moisture content and 2% wet of optimum) and compacted using the British Standard Light compactive effort. Preliminary tests on soils showed improved index properties with an increase in liquid limit (LL), an increase in plastic limits (PL) with a resulting decrease in plasticity index (PI). Preconsolidation pressure increased with RHA content, it also decreased before increasing with increased moulding water content. Reductions in compression index (Cc) and Swell Index (Cs) with increased RHA content were recorded. Cc and Cs generally decreased before increasing with increased moulding water content. The coefficient of volume compressibility (Mv) decreased and increased with higher RHA content; they were also affected by the soil particle state with increasing pressure. The coefficient of consolidation (Cv) showed no observable trend with increased RHA content but generally increased with higher consolidation pressure on the dry and wet side of optimum compacted states.