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- W651569676 abstract "The size of a slab on JPCP concrete pavement has an important effect on the stresses in the concrete. These stresses are the cause of fatigue life and affect the performance of the pavement. A summary on how concrete slabs deform, a discussion on the cause of the stresses and an analysis made with finite elements with ISLAB2000 for new concrete pavements are discussed. The analysis considers a concrete pavement over a granular sub-base and a given truck configuration and loading. The results show tensile stresses in the concrete for different relations between length and thickness of the slabs. A reduction of length from 4,5 m to 1,8 m means that for the same thickness of 23 cm. there is a reduction in stresses from 30 kg/cm2 to less than 20 kg/cm2 or that a reduction in thickness from 23 cm to 15 cm the concrete will have the same stress of 30 kg/cm2. In the same way, a reduction in size with a given thickness will allow for higher axel loads for any given stress. This higher load capacity could mean an increase of axel loads allowed and a reduction in number of trucks, contamination and transportation costs. As a conclusion it can be said: smaller slabs have lower stresses for a given thickness allowing higher axle loads or can be thinner for a given stress with actual axle loads." @default.
- W651569676 created "2016-06-24" @default.
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- W651569676 date "2007-01-01" @default.
- W651569676 modified "2023-09-24" @default.
- W651569676 title "Concrete Pavements with Small Size Slabs for Heavier Loads or Thinner Slabs" @default.
- W651569676 hasPublicationYear "2007" @default.
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