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Development of a mechanistic-empirical based overlay design method for reflecti...
Sousa, Jorge B.; Pais, Jorge C.; Saim, Rachid; Way, George B.; Stubstad, Richard N.This paper describes a new and innovative mechanistically based pavement overlay design method that considers the most predominant type of overlay distress observed in the field: Reflective cracking above old cracks in the underlying pavement surface. Both dense-graded hot mix asphalt and gap-graded asphalt rubber (wet process) mixes were studied, in the laboratory and in the field, to derive the necessary mech...
Estado da arte sobre as propriedades e tipos de utilização do betume modificado...
Sousa, Jorge B.; Pais, Jorge C.; Fonseca, Paulo; Pampulim, Vasco; Stubstad, Richard N.Tendo em conta a actualidade do tema Betume Modificado com Borracha os autores sentiram a necessidade de promover o estado da arte sobre as propriedades e tipos de utilização deste ligante modificado. Com essa finalidade, realizou-se em Vilamoura de 14 a 17 de Novembro de 2000 a primeira Conferência Internacional sobre Betume Modificado com Borracha reciclada de pneus: “Asphalt Rubber 2000”. Atendendo à qualida...
An overlay design method for reflective cracking
Pais, Jorge C.; Sousa, Jorge B.; Way, George B.; Stubstad, Richard N.The purpose of this paper is to develop a pavement design method to address reflective cracking using sound mechanistic principles reinforced by practical experience. This paper presents the initial concept of the proposed overlay design method. Test sections have been constructed to assess the effect of overlay thickness, crack width and load to validate the design method. Crack activity under the effect of tr...
Comparison of laboratory test performance between asphalt-rubber hot mix and de...
Sousa, Jorge B.; Pais, Jorge C.; Stubstad, Richard N."Reflective cracking in pavements : research in practice" contains the Proceedings of the 4th International RILEM Conference on Reflective Cracking in Pavements (Proceedings PRO11). ; Asphalt-Rubber Hot-Mix (ARHM) has shown a higher resistance to flexural and reflective fatigue cracking, and also to permanent deformation, than conventional Dense Graded Asphalt Concrete (DGAC). Experience has demonstrated that...
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