Open AccessGEOGRID REINFORCEMENT OF ASPHALT PAVEMENTS
Author(s) -
Adam Zofka,
Maciej Maliszewski,
Ewa Zofka,
Miglė Paliukaitė,
Laura Žalimienė
Publication year - 2017
Publication title -
the baltic journal of road and bridge engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.259
H-Index - 21
eISSN - 1822-4288
pISSN - 1822-427X
DOI - 10.3846/bjrbe.2017.22
Subject(s) - geogrid , reinforcement , asphalt , fatigue cracking , serviceability (structure) , geotechnical engineering , asphalt concrete , cracking , rut , engineering , structural engineering , materials science , composite material
Geogrid materials applied within asphalt layers defer or prevent the occurrence of reflective cracking. Thecontribution of this work significantly adds to extending pavement serviceability and improving benefit/cost analysis.Since 1970s many studies have demonstrated the benefits of geogrid reinforcement in asphalt pavements, but thisknowledge did not translate to their extensive usage in the actual construction practice. Among potential reasons arehigher initial costs, lack of in-depth understanding of working mechanism within adjacent asphalt layers and lack ofcommonly standard design procedures. This paper presents a recent study, which investigated the effect of geogridreinforcement on asphalt mixture specimens. Two types of laboratory experiments were conducted, namely monotonic(strength and fracture) testing and cyclic (fatigue and modulus) testing. The results demonstrated a significantstrengthening contribution of geogrid, which was observed regarding fracture energy results and terminal deflectionsin the fatigue testing. This paper also presents a short example connecting pavement deflections with the allowable axleloading (also known as fatigue life) to demonstrate the practical implications of geogrid reinforcement. The undertakenanalysis shows the reduction of pavement deflections due to the geogrid application, which potentially leads to a significantextension of pavement fatigue life. Paper concludes with several recommendations for further work in the area ofgeogrid reinforcement.