Global Journal of Researches in Engineering, E: Civil & Structural, Volume 23 Issue 2

The black clay samples have showed much more absorbance even though they were treated at 6% with CaSiO3 and curing in that same process of alterning temperature. Figure 4: UCS of treated laterite samples after 28 days curing in dry and room conditions Under room temperature (~25*C) and dry storage conditions, the laterite samples were crushed at 28 days, under these conditions (figure 4), the laterite treated with 4% cement (lat-cem4%-dry28days) reached a peak of 1.11 MPa with an elongation level of about 6% before collapsing to 18% elongation. reaching 1.10 MPa with 8% elongation, only collapses to about 13% (figure 4). But, this does not tell us much about the behavior in the natural environment with 3-4 months of rainfall out of 12. Figure 5: UCS of treated laterite samples after 28 days curing alterning a 24H storage in wet or a dried conditions It was found that the CaSiO3-treated laterite reached its peak faster with a minimum elongation of about 6% against 8.5% for the cement-treated laterite, it collapsed well before the cement-treated laterite at about 10% against 11%. Some complementary results in terms of consolidation rate for the untreated and the treated black clay samples once saturated can be used to support this thesis further. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0% 5% 10% 15% 20% Vertical Stress (MPa) Axial Strain (%) lat-cem4%-dry28days lat-Sh4%-dry28days 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0% 2% 4% 6% 8% 10% 12% Vertical Stress (MPa) Axial Strain (%) lat-sh4%-wet7d- dried21d lat-cem4%-wet.7d- dried21d Global Journal of Researches in Engineering © 2023 Global Journals ( ) E Volume XxXIII Issue II Version I 50 Year 2023 Stabilization of a Sub-Saharan Laterite Soil using Calcium Silicate However, the calcium silicate-treated laterite (lat-sh4%-dry28days) in the same conditions, despite