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Show simple item record Netterberg, F De Beer, Morris 2012-08-01T10:26:16Z 2012-08-01T10:26:16Z 2012-04
dc.identifier.citation Netterberg, F. and De Beer, M. 2012. Weak interlayers in flexible and semi-flexible road pavements: Part 1. Journal of the South African Institution of Civil Engineering, vol. 54(1), pp 33-42 en_US
dc.identifier.issn 1021-2019
dc.description Copyright: 2012 South African Institution of Civil Engineering en_US
dc.description.abstract Weak layers, interlayers, laminations and/or interfaces in the upper structural layers of road pavements are specifically prohibited in most road-building specifications. However, such layers are extremely common and often lead to premature pavement distress. In Part 1 of this two-part set of papers, it is shown that from experience with heavy vehicle simulator (HVS) and dynamic cone penetrometer (DCP) testing, the presence of such layers and/or conditions at any depth in the structural layers of a flexible or semi-flexible pavement is far more deleterious thanis commonly appreciated. In Part 2 the effects of these weak layers are further modelled and discussed using various examples based an HVS testing and mechanistic pavement analyses. In particular, a weak upper base course of a cemented pavement under a thin bituminous surfacing may lead to severe surfacing (and upper base) failure within a matter of weeks to months after opening to traffic, not excluding failure even during construction. In this paper (Part 1), the causes of weak layers, interlayers, laminations and/or interfaces, together with simple methods for their detection during construction and analyses of their effects on the structural capacity of flexible and semi-rigid (cemented) road pavements, are briefly discussed. en_US
dc.language.iso en en_US
dc.publisher South African Institution of Civil Engineering en_US
dc.relation.ispartofseries Workflow;9344
dc.subject Pavement design en_US
dc.subject Road pavements en_US
dc.subject Heavy vehicle simulator en_US
dc.subject HVS en_US
dc.subject Civil engineering en_US
dc.title Weak interlayers in flexible and semi-flexible road pavements: Part 1 en_US
dc.type Article en_US

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