Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/35262
Title: In-place evaluation of a limestone base course modulus, using a van-integrated falling weight deflectometer (FWD) and the GeoGauge (SSG)
Authors: Quinta-Ferreira, Mário 
Fung, Eduardo 
Andrade, Pedro Santarém 
Branco, Fernando Castelo 
Keywords: base course; pavement; all-in-aggregate; stiffness modulus; FWD; GeoGauge
Issue Date: 2012
Publisher: Taylor & Francis
Citation: Quinta-Ferreira, M.; Fung, E.; Andrade, P.S.; Branco, F.C.. 2012. "In-place evaluation of a limestone base course modulus, using a van-integrated falling weight deflectometer (FWD) and the GeoGauge (SSG)", Road Materials and Pavement Design 13, 4: 817 - 831. doi: 10.1080/14680629.2012.735794
Serial title, monograph or event: Road Materials and Pavement Design
Volume: 13
Issue: 4
Abstract: A comparative evaluation of the in-place stiffness modulus using a van-integrated falling weight deflectometer (FWD) and the GeoGauge (soil stiffness gauge – SSG) was done on a limestone all-in-aggregate (AIA), used in the base course of a highway pavement. The tests were done in two campaigns, one for each unbound granular layer of 0.15 m thickness, along 510 m, using five alignments. Considering the whole granular materials used, the dry unit weight (γd) is related with the stiffness modulus obtained with the SSG. The stiffness moduli obtained for the SSG and for the FWD in the same test point are not correlated. Considering as reference the equivalent modulus obtained with the FWD, the moduli computed for the 85th percentile with both the FWD and the SSG show a difference lower than 20%. These results emphasise the possible use of the SSG as a reliable procedure for stiffness modulus evaluation of unbound limestone bases.
URI: http://hdl.handle.net/10316/35262
Other Identifiers: 10.1080/14680629.2012.735794
DOI: 10.1080/14680629.2012.735794
Rights: openAccess
Appears in Collections:FCTUC Ciências da Terra - Artigos em Revistas Internacionais

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