00177119

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http://onlinepubs.trb.org...s/trr/1977/641/641-010.pdf

https://scholar.google.co...eeme&publication_year=1977

The possibility of using the windblown sands that occur in the northern areas of South West Africa for the construction of all-weather roads to carry heavy truck traffic has been investigated. Laboratory investigations and field trials in Pretoria, South Africa, showed that bituminous stabilization of these sands was promising, and a full-scale road experiment to test a limited number of bases of bituminous-stabilized sand was constructed in the homeland of Owambo, South West Africa. This paper describes the laying of the experiment and the construction techniques and control measures used. A new technique that establishes the optimum time for the compaction of a cutback bituminous-stabilized sand mixture after aeration by using a vane shear apparatus is described. The vane shear apparatus was also used to measure the in situ shear strengths of the various experimental bituminous-stabilized sand bases after compaction and during service; the results of these measurements, together with performance data after 8 years service with respect to deformation and cracking, are discussed. Laboratory and field studies are described and predictions about the performance of a bituminous-stabilized sand base under varying traffic conditions are made by using the best known techniques available at this time.

This article appeared in Transportation Research Record No. 641, Stabilization of Soils. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411485

pp 52-61

1977

Transportation Research Record

0309026709

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Figures (8) ; Photos; References (15) ; Tables (1)

Asphalt pavements; Base course (Pavements); Bituminous materials; Compaction; Deformation; Fracture mechanics; Pavement performance; Sand; Shear strength; Soil stabilization; Stabilized materials; Stresses; Vane shear tests

Geotechnology; Highways; Materials; Pavements

TRIS, TRB

Jun 28 1978 12:00AM

• COMPACTION ENERGY RELATIONSHIPS OF COHESIVE SOILS
• FACTORS AFFECTING UNCONFINED COMPRESSIVE STRENGTH OF SALT-LIME-TREATED CLAY
• FATIGUE BEHAVIOR OF CEMENT-TREATED MATERIALS
• FROST ACTION IN CEMENT-STABILIZED COLLIERY SHALE
• LABORATORY STUDY OF THE EFFECTIVENESS OF CEMENT AND OF LIME STABILIZATION FOR EROSION CONTROL
• MIX DESIGN, DURABILITY, AND STRENGTH REQUIREMENTS FOR LIME-STABILIZED LAYERS IN AIRFIELD PAVEMENTS
• PONDING AN EXPANSIVE CLAY CUT: EVALUATIONS AND ZONES OF ACTIVITY
• STABILIZATION OF EXPANSIVE SHALE CLAY BY MOISTURE-DENSITY CONTROL
• SUBGRADE MODULUS ON THE SAN DIEGO TEST ROAD
• TENSILE-STRENGTH DETERMINATIONS OF CEMENT-TREATED MATERIALS