EVALUATION OF FLEXIBLE ROAD PAVEMENTS IN KENYA
Experience from some of the recently completed roads shows that road pavements have at times failed prematurely thereby leading to unplanned expenditure in the exercise of rehabilitating them. This paper outlines results of studies carried out to establish long-term behaviour of road pavements under tropical climatic conditions. The studies involved measurements of elastic deflections, pavement distortion and rutting, cracking as well as establishing traffic loading patterns for typical high standard trunk roads of varying design in Kenya. The results of the studies show that while pavements are weakened by repeated wheel load applications pavements also tend to develop strength with age. The results further showed that for a pavement approaching failure elastic deflections are a function of cracking and rutting; and that higher elastic deflections are obtained during the months of high rainfall and high temperatues. The paper recommends that there is need for road authorities to regularly monitor factors that relate to road pavement performance such as traffic loading, pavement condition, etc. in order to help in the financial planning for pavement strengthening and maintenance works and that the necessary funds should be set aside in the budget. (TRRL)
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0727701630
-
Supplemental Notes:
- Proceedings of the Conference on Criteria for Planning Highway Investment in Developing Countries, held Cafe Royal Conference Centre, London, May 17-18, 1982.
-
Corporate Authors:
Institution of Civil Engineers
One Great George Street, Westminster
London, United Kingdom SW1P 3AA -
Authors:
- Gichaga, F J
- Conference:
- Publication Date: 1983
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 153-160
Subject/Index Terms
- TRT Terms: Axle load force; Climate; Conferences; Cracking; Deflection; Deformation; Developing countries; Elasticity (Mechanics); Evaluation and assessment; Failure; Flexible pavements; Heat; Measurement; Pavement cracking; Pavement performance; Pavements; Rain; Rainfall; Repeated loads; Ruts (Pavements); Rutting; Strength of materials; Surveillance; Temperature; Traffic loads; Tropics
- Uncontrolled Terms: Rut
- Geographic Terms: Kenya
- Old TRIS Terms: Pavement deflection
- ITRD Terms: 3067: Axle load; 8525: Conference; 5211: Cracking; 5586: Deflection; 5595: Deformation; 150: Developing countries; 5912: Elasticity; 9020: Evaluation (assessment); 5520: Failure; 2944: Flexible pavement; 6743: Heat; 8055: Kenya; 6136: Measurement; 2507: Rain; 5588: Repetitive loading; 3081: Rutting (wheel); 5544: Strength (mater); 9101: Surveillance; 2513: Tropics; 2545: Weather
- Subject Areas: Design; Freight Transportation; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 00373880
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 0 7277 0163 0
- Files: ITRD, TRIS
- Created Date: Jul 30 1983 12:00AM