Evaluation of the potential of use of the Portable Lightweight Deflectometer (LFWD) to measure deflections in urban pavements
DOI:
https://doi.org/10.14295/transportes.v28i5.2078Keywords:
Portable lightweight deflectometer. Deflection. Correlation. Urban pavement.Abstract
The main objective of this study was to available the potential of use of the Portable Lightweight Deflectometer (LFWD) to measure deflections in urban pavements. For this, measurements of deflections measured by the LFWD, benkelman beam (VB) and the plate load test (PL) on pavements constructed by different materials, layer thickness and different stages of its service life. Linear regression models were determined, which related the deflection measurements between LFWD and VB and PL. The results showed that there weren´t good linear relations in structures with thicker bituminous layer, as well as in structures with bituminous layer on stone blocks. There were good linear relations in structures composed by thinner bituminous layer on granular base. This study stimulates the use of dynamic non-destructive testing equipment to measure elastic deformations for the design of maintenance and rehabilitation of low volume roads.Downloads
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