Rational Design of Lime-Stabilized Laterite Roads

by Gurdev Singh, (M.ASCE), Lect. in Civ. Engrg.; Dept. of Civ. Engrg., Univ. of Leeds, Leeds LS2 9JT, United Kingdom,
Baffour K.A. Akoto, Former Research Student; Dept. of Civ. Engrg., Univ. of Leeds, Leeds LS2 9JT, United Kingdom,

Serial Information: Transportation Engineering Journal of ASCE, 1981, Vol. 107, Issue 6, Pg. 653-665

Document Type: Journal Paper


In the tropical and subtropical regions of the world, where, due to lack of well processed aggregates, the main highway material is laterite soils, there has been virtually no shift from the empirical and semiempirical approach towards rational pavement design method. This may be due to the fact that there is no accumulation of knowledge on the resilient properties of laterite soils. A research program has been in progress at the Department of Civil Engineering, Leeds University to investigate the resilient properties of raw and stabilized laterite. The results obtained from one of the studies has been used in a rational design of lime-stabilized laterite for low cost roads. Using limiting stresses and strains associated with cracking, pavement thicknesses have been recommended. The recommended thicknesses compare favorably with existing design recommendations.

Subject Headings: Highway and road design | Lime | Tropical soils | Pavement design | Materials processing | Thickness | Aggregates | Construction materials

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