Long term performance on site of interface systems

Title: Long term performance on site of interface systems
Author(s): A. Vanelstraete, J. De Visscher
Paper category : conference
Book title: Fifth International RILEM Conference on Reflective Cracking in Pavements
Editor(s): C. Petit, I.L. Al-Qadi and A. Millien
Print-ISBN: 2-912143-47-0
e-ISBN: 2912143764
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 699 - 706
Total Pages: 8
Nb references: 6
Language: English

Abstract: This paper deals with the results of an evaluation of different sites in Belgium where interface systems were used for the prevention of reflective cracking. The selected projects concern mostly asphalt overlays on cement concrete slabs where SAMI, non-woven geotextiles impregnated with modified bitumen, grids and steel reinforcing nettings were used as interface systems. Depending on the project, the reparations were executed four to thirteen years ago. The aim of this evaluation is to evaluate their long term performance.
In 1998, detailed laying procedures for the different products were introduced in the Flemish standard tender specifications and applied. The paper will report on the results of evaluations of projects, where these techniques have been applied. In particular, the paper will describe the results of an experimental road constructed four years ago, where a SAMI, an impregnated nonwoven, a grid and steel reinforcing nettings were applied, together with a section without interlayer system.Secondly, the paper will report on the results of an experimental road constructed seven years ago. Different sections with steel reinforcing nettings applied on cement concrete slabs before asphalt overlaying will be compared with sections without anti-cracking systems. For both systems, crack and seating of the concrete slabs was performed prior to repair for some sections. Hence, the effect of this technique can be evaluated, for structures with and without steel reinforcing nettings.Thirdly, the results of visual inspections of the different sections, performed at regular time intervals, will be reported. They give insight in the reasons of failure of certain projects and on the long term performance of these techniques. Most of the projects were already evaluated for the previous RILEM-conferences on reflective cracking ; these results will be completed with the latest information of evaluations.

Online publication: 2004-04-15
Publication type : full_text
Public price (Euros): 0.00