Effect of reinforcement properties

Title: Effect of reinforcement properties
Author(s): A. de Bondt
Paper category : conference
Book title: Fourth International RILEM Conference on Reflective Cracking in Pavements - Research in Practice
Editor(s): A. O. Abd El Halim, D. A. Taylor
and El H. H. Mohamed
Print-ISBN: 2-912143-14-4
e-ISBN: 2351580265
Publisher: RILEM Publications SARL
Publication year: 2000
Pages: 13 - 22
Total Pages: 10
Nb references: 3
Language: English

Asphaltic reinforcements have been causing a lot of debate since their introduction in the early eighties. The big question always is: which tensile strength is required? Due to the conservative way of tackling problems in the road construction community, it is unfortunately seldomly realized that the main property of an asphaltic reinforcement is its so-called product stiffness; this is the stiffness modulus of the reinforcement material multiplied by the sum of the cross-sectional areas of all ribs or strands per unit width in the direction perpendicular to the applied force. In the paper improvement factors of reinforcements (characterized by product stiffness!) in case of thermal as well as traffic loadings are discussed. This factor is defined as the increase in lifetime (for a given overlay thickness!), as compared to the unreinforced situation. It has no fixed value for a specific product; it depends on the local circumstances, which also means that extrapolating laboratory beam cracking tests is not allowed. Furthermore, it is shown how and under which test conditions reinforcement stiffnesses have to be measured.

Online publication: 2009-12-23
Publication type : full_text
Public price (Euros): 0.00

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