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Pro037

Fibreglass pavement reinforcements used in dissimilar climatic zones for retarding reflective cracking in asphalt overlays



Title: Fibreglass pavement reinforcements used in dissimilar climatic zones for retarding reflective cracking in asphalt overlays
Author(s): J. R. Darling, J. H. Woolstencroft
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: 435 - 442
Total Pages: 8
Nb references: 11
Language: English


Abstract: Frequently, a pavement that is overlaid with asphalt concrete displays a crack pattern similar to that of the underlying roadway soon after construction, which reduces the ultimate durability of the pavement [1]; this is called reflective cracking. Many factors affect the rate at which reflective cracking occurs [2], such as overlay thickness, traffic volume, length of slabs, load transfer, climatic variations, and movement in the underlying soil. One solution to help combat reflective cracking is the use of a reinforcing interlayer to increase the tensile strength and stiffness of the overlay [3]. This paper describes the performance of a fibreglass geogrid used in two dissimilar North American climatic zones: Zone I - wet, no freeze; Zone VI - Dry, hard freeze, spring thaw. The two study sites in Zone I are US Federal Highway 190 located in Hammond, Louisiana, USA and the other is US Federal Highway 96 located in Lumberton, Texas. The study site in Zone VI is Highway 513:02 located in the Municipal District of Taber, Alberta, Canada. On all three projects, varying design approaches and remedial repairs were carried out in conjunction with utilizing two different strength reinforcing geogrids. On the basis of visual surveys and quantitative analysis, performances for the sites were evaluated over a six-year and a 2 ½ year period. In addition, this paper briefly describes the reinforcement installation and overlay procedures as well as regional climatic variations.


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