Correlation Between Rheological Rutting Tests on Bitumen and Asphalt Mix Flow Number

Characterisation of Permanent Deformation Behaviour of Asphalt Mix Based on a Combined Elastic Plastic (CEP) Parameter

“…Various laboratory tests are used to evaluate and analyse the rutting resistance of asphalt mixtures in laboratory, which may help predict field performance of asphalt concrete pavements. These tests include dynamic modulus (DM), static creep (SC), dynamic creep test (DC), triaxial test and the wheel trackers [5]. The National Cooperative Highway Research Program (NCHRP) Project 9-12 recommends DM, Flow Time (FT) and Flow Number (FN) tests, collectively called simple performance test (SPT) for evaluating the rutting resistance of asphalt mixtures [6].…”

“…The correct selection of binder plays an important role in the asphalt mixture performance against rutting [5]. For the characterisation of the asphalt binder properties related to permanent deformation or rutting, the high-temperature grade is used by the Superpave performance grading system.…”

“…However, it is still possible to obtain excellent correlations between G*/sin(δ) of a group of similar asphalt binders and asphalt mixes (i.e., comparing the asphalt binders within same polymer family and the corresponding asphalt mixtures) within a wide range of temperatures. It is also feasible to predict the rutting resistance of asphalt mixtures (tested at 50 • C) from G*/sin(δ) of a mixed set of unmodified and polymermodified binders when tested at a slightly lower temperature, such as 40 • C [5]. On the other hand, despite the MSCR test being a significant step towards the improvement of laboratory evaluation of asphalt binder field performance, some concerns related to the test were identified during the literature search.…”

“…Several research observed that the standard MSCR results (J nr3.2 and percent recovery R 3.2 ) did not particularly correlate well with asphalt mix rutting parameters from the Repeated Load Permanent Deformation (RLPD) and Hamburg Wheel Tracker Test (HWTT) [15][16][17]. Furthermore, some research showed that for Polymer Modified Bitumen (PMB) family, G*/sin(δ) provides better correlation with corresponding asphalt mixture results than J nr [5]. Additionally, it can be said that, although several research did successfully prove that J nr correlates better with the HMA rutting performance than G*/sin (δ), a considerable overlapping or near-identical values can be observed in the J nr values of the asphalt binders, despite the binders being vastly different from each other [1,18].…”

On the Role of Loading Configurations in Creep Curve Accumulation: An Statistical Analysis by Applying Weibull Probability Distribution Function

“…Permanent deformation that is revealed in wheel paths, bus stops, and area with steep slopes significantly affects the safety, roughness, and ease of transport [1][2][3]. Accordingly, numerous research studies have been performed aimed at determining a convenient way of improving resistance against permanent deformation, such as Binder modification [4][5][6][7], incorporating high modulus and artificial aggregates [8,9], and the use of recycled materials [10][11][12][13][14][15]. Besides, the resistance of different asphalt mixtures against permanent deformation would be varied concerning what was adopted in the definition of the loading regime.…”