Title: THE TRANSIENT AND LONG TERM PERFORMANCE OF PAVEMENTS IN RELATION TO TEMPERATURE
Abstract: At the present stage of development of a structural method of design applicable to British conditions it is possible to model the transient stress-strain behavior of several types of flexible pavement with some confidence whereas progress in solving the more complex problem of the long term behavior of pavement materials and subgrades under repetitive loading is understandably slower. It is therefore of value to try to relate levels of transient stress and strain generated within the road directly to their observed long term behavior. Most British pavements tend to deteriorate by deformation of the road surface followed by cracking at a relatively late stage. Elastic analysis of a pavement with a rolled asphalt surfacing and base indicates the critical nature of stress-strain conditions at high temperature and these are related to the development of deformation in an experimental road section under traffic, nearly all of which took place under high temperature conditions. Full-scale repeated loading tests carried out in a Road Machine under controlled conditions of wheel load and temperature on a pavement with a crushed stone base are described. The results again demonstrate the critical importance of temperature in determining behavior and indicate the existence of a critical value of vertical stress in the subgrade above which subgrade deformation occurs. /Author/
Publication Year: 1972
Publication Date: 1972-09-01
Language: en
Type: article
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Cited By Count: 13
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