A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Permanent Deformation of Flexible Pavements
Seven pairs of pavement with granular bases were tested under controlled conditions. One pavement in each pair contained fabric inclusions. An improved testing facility was developed, including: (1) servo-hydraulic system for the loading carriage; (2) amplification and read-out system for pressure cells; (3) linearizing unit for strain coils; (4) transducers for measuring vertical and resilient deflection; (5) techniques for measuring in situ strain on fabric inclusions; (6) extensive use of nuclear density meter to monitor pavement and foundation materials. The following conclusions are drawn: (1) No improvement in performance resulted from fabric inclusions. (2) No consistent reduction in in-situ stresses, resilient strains, or permanent strains was observed as a result of fabric inclusion. (3) No consistent improvement in densities resulted from fabric inclusions. (4) Some slip apparently occurred between fabric and soil on those pavements which involved large deformations. The slip occurred between fabric and crushed limestone base rather than between fabric and silty-clay subgrade. (Author)
Permanent Deformation of Flexible Pavements
Seven pairs of pavement with granular bases were tested under controlled conditions. One pavement in each pair contained fabric inclusions. An improved testing facility was developed, including: (1) servo-hydraulic system for the loading carriage; (2) amplification and read-out system for pressure cells; (3) linearizing unit for strain coils; (4) transducers for measuring vertical and resilient deflection; (5) techniques for measuring in situ strain on fabric inclusions; (6) extensive use of nuclear density meter to monitor pavement and foundation materials. The following conclusions are drawn: (1) No improvement in performance resulted from fabric inclusions. (2) No consistent reduction in in-situ stresses, resilient strains, or permanent strains was observed as a result of fabric inclusion. (3) No consistent improvement in densities resulted from fabric inclusions. (4) Some slip apparently occurred between fabric and soil on those pavements which involved large deformations. The slip occurred between fabric and crushed limestone base rather than between fabric and silty-clay subgrade. (Author)
Permanent Deformation of Flexible Pavements
S. F. Brown (author) / B. V. Broderick (author) / J. W. Pappin (author)
1980
165 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Pavements , Deformation , Flexible materials , Composite structures , Asphalt , Bitumens , Stress strain relations , Finite element analysis , Mathematical prediction , Fatigue(Mechanics) , Cracks , Resilience , Granules , Fabrics , Stress analysis , Foundations(Structures) , Test facilities , Foreign technology , Flexible pavements , Ruts , Nonwoven fabrics
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