Structural Evaluation of the Effect of Pulverized Palm Kernel Shell (PPKS) on Cement-Modified Lateritic Soil Sample
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Date
2017-11-01
Journal Title
Journal ISSN
Volume Title
Publisher
Science Publishing Group
Abstract
There have been global efforts to reduce environmental pollution of agricultural and industrial waste products by
utilizing such wastes as stabilizing agents to improve soils for various uses, especially road construction. In this research,
lateritic soil sample obtained from a borrow pit was tested with varying percentages of Pulverized Palm Kernel Shell (PPKS).
The soil was classified as A-6 (AASHTO classification) using standard soil laboratory tests. Laboratory tests such as Atterberg
Limits, Compaction, Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) were conducted on the soil
+ PPKS mix only and also on soil + PPKS + 3% Ordinary Portland Cement (OPC) mix. The liquid limit (LL) and plasticity
index (PI) values decreased steadily with increase in PPKS while the plastic limit (PL) value increased with up to 4% PPKS
addition after which the values started decreasing. The shrinkage limit (SL) value increased with a peak value at 8% PPKS
addition after which the values began to decrease. The Optimum Moisture Content (OMC) results on PPKS addition increased
from 16% to 19.5% while the Maximum Dry Density (MDD) decreased by 45.18% from 1.669g/m3
to 0.915g/m3
. Addition of
PPKS decreased the Unsoaked CBR by 10.79% from 68.60 to 61.20% while the Soaked CBR increased by 74.12% from
18.05% to 69.75%. UCS values for the lateritic soil and PPKS for the uncured sample, at 7 days and 14 days had peak values
of 85.03, 96.46 and 100.44 respectively. From the study, it can be concluded that the properties of the Lateritic soil improved
when stabilized with Cement and pulverized palm kernel shell compared to when it was stabilized with pulverized palm kernel
shell alone
Description
Keywords
Pulverized Palm Kernel Shell, Stabilization, CBR, UCS
Citation
Olutaiwo Adewale, Ajisafe Segun, Adanikin Ariyo. Structural Evaluation of the Effect of Pulverized Palm Kernel Shell (PPKS) on CementModified Lateritic Soil Sample. American Journal of Civil Engineering. Vol. 5, No. 4, 2017, pp. 205-211. doi: 10.11648/j.ajce.20170504.12