Prediction of Compaction Density of Lateritic Soil Base Pavement Layers from Dynamic Cone Penetration Values in Uganda
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
arcsmge
Abstract
The study focused on obtaining a correlation between sand replacement method density values and dynamic cone
penetration (DCP) rate values (mm/blow) for base pavement layers of lateritic soils in Uganda. A maximum depth of 500 mm
of gravel of lateritic soil on existing roads, in Rubaga division in Kampala (Uganda), was penetrated using the DCP to obtain the
rate of penetration (mm/blow). They were also investigated for their index properties and field density values using sieve
analysis, Atterberg limits and sand cone replacement methods. The gravel was generally classified as reddish-brown clayey sand
with an AASHTO class of A-2-6. The correlation obtained between dry density values from the sand-cone replacement method
and DCP rates showed an inverse relationship with R2 coefficient of 0.5999 indicating a moderate correlation between the two
variables. The correlation was validated with data from other lateritic base layers of roads in Wakiso district, Uganda
Description
Keywords
Compaction, Density, Pavement Layers, Dynamic Cone Penetration
Citation
Jjuuko, S., Kalumba, D., Mutaasa, H. K., & Lukanda, J. (2015). Prediction of Compaction Density of Lateritic Soil Base Pavement Layers from Dynamic Cone Penetration Values in Uganda. In Innovative Geotechnics for Africa, Proceedings of 16th African Regional Conference on Soil Mechanics and Geotechnical Engineering, Bouassida, Khemakhem & Haffoudhi (Eds.) (pp. 595-601).