Scientific Publication

The use of calcrete in paved roads in Botswana

author(s) Toole, T.. - Lionjanga, A.V.. - Greening, P.A.K.
from UK Foreign, Commonwealth & Development Office (FCDO)
permalink open
themes
regions
  • Southern Africa
  • Sub-Saharan Africa
  • Africa
  • World
citation

LIONJANGA, A V, T TOOLE and P A K GREENING (1987) The use of caicrete in paved roads in Botswana. In: AKINMUSURU, J 0 et al (Eds). Soil Mechanics and Foundation Engineering. Ninth Regional Conference for Africa, Lagos, September 1987, Volume 1. Rotterdam: A A Balkema, 489-502. Transport Research Laboratory (TRL) pp. 16

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Abstract

This paper describes the studies undertaken in Botswana which have led to the development of local specifications for the use of calcretes in paved road construction. The studies have examined their use as road bases, untreated shoulder materials and as surface dressing aggregates. A new specification for lightly-trafficked roads based on the findings of the studies is included. The results of recent research concerning the use of cement and lime stabilisation is presented and recommendations made. Finally, the results of the research will be applied to the construction of over 1200 km of road to be constructed in the Kalahari region over the next decade. This will enable massive cost savings to be made

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