Towards a Uniform Fracture Mechanics-Based Framework for Flexible Pavement Design
Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Cracking is an important potential failure mechanism for pavement structures. By combining a strain energy-based fracture criterion with conventional fracture mechanics based on the Energy Ratio (ER) concept, crack growth in asphalt can be investigated, and a low temperature Thermal Cracking model (TCMODEL) can be introduced. This thesis presents the implementation of the Florida cracking model into a Mechanistic-Empirical (ME) flexible pavement design framework. An improved analysis procedure for better converting raw data from the Superpave Indirect Tensile Test (IDT) into fundamental viscoelastic properties of the asphalt mixture allows for calibration of the TCMODEL. This thesis involves a detailed review of Florida cracking model and TCMODEL. Finally, a MATLAB tool is prepared for the thermal cracking model to investigate the cause and effect of the problems.
Place, publisher, year, edition, pages
2009. , 75 p.
Trita-VT. FR, ISSN 1650-867X ; 09:01
Crack growth; Low temperature cracking; Fracture mechanics; Dissipated creep strain energy; Asphalt pavements; Energy Ratio
IdentifiersURN: urn:nbn:se:kth:diva-49774OAI: oai:DiVA.org:kth-49774DiVA: diva2:460283
Subject / course
Degree of Master - Infrastructure Engineering
2008-12-10, Brinellvägen 34, Stockholm, 15:25 (English)