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Stress relieving function of paving fabrics when used in new road construction

Title: Stress relieving function of paving fabrics when used in new road construction
Author(s): E. Ramberg Steen
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: 105 - 112
Total Pages: 8
Nb references: 4
Language: English

Abstract: In order to increase the bearing capacity of roadbases constructed on weak or unstable subgrades, many methods of stabilisation of the base courses have been investigated over the years. Without stabilisation, heavy trafficking on the final asphalt overlay will without question result in rutting. Consequently, improvements of the stiffness of the roadbase and by this increasing of the support of the asphalt overlay have been essential in new road constructions. This paper focuses on the use of stress relieving inlays of nonwoven paving fabrics, sufficiently saturated with bituminous tack-coat and placed between rigid bearing capacity improved cement or lime stabilized base courses and new asphalt overlays. The paving fabric interlayer system allows for slight differential movements between any unintentionally arisen cracks or pre-cracked pattern of the cement or lime stabilized layers. The pre-cracking often done in order to reduce the damaging stresses which emerges from large sections. The method has been utilized over many years, and the inclusion of the stress relieving paving fabric significantly improves the performance period (i.e., time to rehabilitation) of the entire construction due to the retarding of reflective cracking caused by thermal movements and shrink and swell due to moisture variations in the rigid stabilized base course, even when pre-cracked.

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

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