ABSTRACT
In an effort to improve on-site performance of recycled mixtures, the authors developed an extensive research programme aimed to investigate the effects provided by the introduction of lime in cold recycled mixtures as active filler. The basic idea was to analyse the bearing performance of pavement layers made with bituminous emulsion cold recycled mixes with different blends of active fillers (cement, lime). This paper evaluates the short term bearing capacity of recycled mixtures: assessment provided are based on results of deflectometric tests carried out on a trial section specifically built in Italy, close to Florence. Tests have been undertaken using LWD (Lightweight Deflectometer) and FWD (Falling Weight Deflectometer) immediately after compaction and after 24 hours of curing. The obtained results, even though they need to be confirmed by the analyses of long-term behaviour, positively support the use of lime as an active filler.
