Terms and Definitions on Crack-Healing and Restoration of Mechanical Properties in Bituminous Materials

Fatigue damage is one of the main modes of deterioration of bituminous materials that leads to the failure of flexible pavements. However, it is well known that bituminous materials have some capability of recovering inflicted damage to some extent due to their viscoelastic nature. This process has been referred to as “self-healing”. Recently, research on crack-healing of bituminous materials has gained more importance and popularity due to the development of self-healing materials by materials scientists and engineers, that have been used in several applications. The Rilem Technical Committee TC 278-CHA (Crack-Healing of Asphalt Pavement Materials) was created in 2016 to tackle the challenges related to testing and evaluating the crack-healing properties of bituminous materials. However, the committee members noticed that there is no clear agreement within the scientific community about some basic terms to use when it comes to this new area of interest. Hence, this paper aims to clarify some of the concepts related to crack-healing and propose some common terms to the researchers and pavement engineers.

[1]  Dallas N. Little,et al.  A Framework to Quantify the Effect of Healing in Bituminous Materials using Material Properties , 2008 .

[2]  Pierre Chaverot,et al.  FATIGUE DAMAGE FOR BITUMINOUS MIXTURES: A PERTINENT APPROACH , 1996 .

[3]  D. Little,et al.  A Framework to Quantify the Effect of Healing in Bituminous Materials using Material Properties , 2008 .

[4]  Y R Kim,et al.  Chemical and mechanical evaluation on healing mechanism of asphalt concrete , 1990 .

[6]  F P Bonnaure,et al.  A LABORATORY INVESTIGATION OF THE INFLUENCE OF REST PERIODS ON THE FATIGUE CHARACTERISTICS OF BITUMINOUS MIXES (WITH DISCUSSION) , 1982 .

[7]  H. Baaj,et al.  Fatigue of bituminous mixtures , 2004 .

[8]  Peter Mikhailenko,et al.  Recovery of asphalt mixture stiffness during fatigue loading rest periods , 2018 .

[9]  C. Sauzéat,et al.  Quantification of biasing effects during fatigue tests on asphalt mixes: non-linearity, self-heating and thixotropy , 2015 .

[10]  Hussain U Bahia,et al.  Distribution of Strains Within Hot-Mix Asphalt Binders: Applying Imaging and Finite-Element Techniques , 2000 .

[11]  Philippe Coussot,et al.  Thixotropic Behavior of Paving-Grade Bitumens under Dynamic Shear , 2012 .

[12]  Ulf Isacsson,et al.  Influence of Hysteretic Heating on Asphalt Fatigue Characterization , 2004 .

[13]  Hervé Di Benedetto,et al.  Effect of Binder Characteristics on Fatigue of Asphalt Pavement Using an Intrinsic Damage Approach , 2005 .

[14]  Y. Richard Kim,et al.  Separation of Thixotropy from Fatigue Process of Asphalt Binder , 2011 .

[15]  P. Bazin,et al.  DEFORMABILITY, FATIGUE AND HEALING PROPERTIES OF ASPHALT MIXES , 1967 .

[16]  F. Dubois,et al.  Quantification of self-heating and its effects under cyclic tests on a bituminous binder , 2017 .

[17]  Cédric Sauzéat,et al.  Nonlinearity, Heating, Fatigue and Thixotropy during Cyclic Loading of Asphalt Mixtures , 2011 .