Using Rolling Dynamic Deflectometer and Overlay Tester to Determine the Reflective Cracking Potential

2007 ◽  
Vol 35 (6) ◽  
pp. 101075 ◽  
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
Dar-Hao Chen
Keyword(s):  
Reflective Cracking ◽  
Cracking Potential ◽  
Overlay Tester

The Effectiveness of Using the Overlay Tester Setup to Evaluate the Performance of Asphalt Mixtures against Reflective Cracking

Tran-SET 2020 ◽  
2021 ◽  
Author(s):  
Ipshit I. Idris ◽  
Husam Sadek ◽  
Marwa Hassan ◽  
Charles Berryman ◽  
Mohammad I. Hossain
Keyword(s):  
Asphalt Mixtures ◽  
Reflective Cracking ◽  
Overlay Tester

Overlay Tester Results from Dense-Graded Asphalt Concrete Mixes: Accuracy in Characterizing Crack Susceptibility

2017 ◽  
Vol 2631 (1) ◽  
pp. 30-38 ◽  
Author(s):  
Victor M. Garcia ◽  
Jose Garibay ◽  
Imad Abdallah ◽  
Soheil Nazarian
Keyword(s):  
Asphalt Concrete ◽  
Specimen Preparation ◽  
Progression Rate ◽  
Preparation Process ◽  
Cracking Potential ◽  
Performance Indexes ◽  
Number Of Cycles ◽  
Crack Susceptibility ◽  
Cycles To Failure ◽  
Overlay Tester

Several highway agencies have either implemented or considered implementing laboratory performance tests to estimate the cracking potential of asphalt concrete (AC) mixes during the mix design process. One such popular test, the overlay tester (OT), measures the number of cycles to failure of specimens that are caused by the repeated application of deformation. The major concern about using this test as a reliable characterization of the cracking susceptibility of AC mixes, especially for dense-graded mixtures, is the variability in the specified number of cycles to failure in the performance index. The main objective of this paper is to report a means for improving the consistency of the OT test results on dense-graded AC mixes. An assessment of a specimen preparation process that can yield more consistent results was conducted. The consistency of the traditional number of cycles to failure as well as of the load–displacement response and load reduction curves was investigated by using a modified specimen preparation process. The repeatability of alternative performance indexes, such as the critical fracture energy and crack progression rate, that can be measured from the OT test was also investigated and compared with that of the index for the number of cycles to failure. This study indicated that the raw data from the OT test seemed to be repeatable if the proposed specimen preparation process was consistently followed. Alternative performance indexes that yielded an acceptable degree of repeatability may be readily implemented in the OT test to assess the cracking characteristics of AC mixes.

Analysis of Temperature Variation and Thermally-Induced Reflective Cracking Potential in Composite Pavements

2020 ◽  
Vol 2674 (10) ◽  
pp. 177-188
Author(s):  
Pengyu Xie ◽  
Hao Wang
Keyword(s):  
Temperature Profile ◽  
Temperature Variation ◽  
Transfer Model ◽  
Climate Data ◽  
Reflective Cracking ◽  
Thermally Induced ◽  
Initiation Phase ◽  
Asphalt Overlay ◽  
Cracking Potential ◽  
Composite Pavements

Reflective cracking is the major distress in composite pavement and can accelerate the deterioration of the whole structure. This paper analyzes the potential for reflective cracking in composite pavements because of thermal cycles. A heat transfer model was first developed to predict cyclic temperature variations with climatic inputs (solar radiation, wind velocity, air temperature, and humidity). Mechanical models were then employed to analyze thermally-induced reflective cracking potential using fracture mechanics parameters. Both models were validated through field measurement of temperature profile and crack propagation. The temperature profile in composite pavement can be predicted accurately from climate data and typical thermal material properties. Because of the temperature variation and gradient in composite pavement, concrete slabs undergo joint opening and curling deformation and stress concentration occurs at the bottom of the overlay. The loading cycles for initiation and propagation of reflective cracking were predicted by empirical equation and Paris’ law. Increasing overlay thickness can extend the pavement service life, but care is needed as different thicknesses offer varying efficiency. Thicker asphalt overlay mitigates reflective crack potential, especially at the crack initiation phase.

Fracture-Tolerant and Shear-Resistant Interlayers for Mitigation of Reflective Cracking

2019 ◽  
Vol 2673 (10) ◽  
pp. 35-46
Author(s):  
Cristian Cocconcelli ◽  
Bongsuk Park ◽  
Jian Zou ◽  
George Lopp ◽  
Reynaldo Roque
Keyword(s):  
Asphalt Pavement ◽  
Aggregate Size ◽  
Cost Effective ◽  
Design Guidelines ◽  
Reflective Cracking ◽  
Rubber Membrane ◽  
Near Surface ◽  
Field Evidence ◽  
Cracking Performance ◽  
Interface Cracking

Reflective cracking is frequently reported as the most common distress affecting resurfaced pavements. An asphalt rubber membrane interlayer (ARMI) approach has been traditionally used in Florida to mitigate reflective cracking. However, recent field evidence has raised doubts about the effectiveness of the ARMI when placed near the surface, indicating questionable benefits to reflective cracking and increased instability rutting potential. The main purpose of this research was to develop guidelines for an effective alternative to the ARMI for mitigation of near-surface reflective cracking in overlays on asphalt pavement. Fourteen interlayer mixtures, covering three aggregate types widely used in Florida, and two nominal maximum aggregate sizes (NMAS) were designed according to key characteristics identified for mitigation of reflective cracking, that is, sufficient gradation coarseness and high asphalt content. The dominant aggregate size range—interstitial component (DASR-IC) model was used for the design of all mixture gradations. A composite specimen interface cracking (CSIC) test was employed to evaluate reflective cracking performance of interlayer systems. In addition, asphalt pavement analyzer (APA) tests were performed to determine whether the interlayer mixtures had sufficient rutting resistance. The results indicated that interlayer mixtures designed with lower compaction effort, reduced design air voids, and coarser gradation led to more cost-effective fracture-tolerant and shear-resistant (FTSR) interlayers. Therefore, preliminary design guidelines including minimum effective film thickness and maximum DASR porosity requirements were proposed for 9.5-mm NMAS (35 µm and 50%) and 4.75-mm NMAS FTSR mixtures (20 µm and 60%) to mitigate near-surface reflective cracking.

Optimisation of self-healing properties for asphalts containing encapsulated oil to mitigate reflective cracking and maximize skid and rutting resistance

2021 ◽  
Vol 300 ◽  
pp. 123879
Author(s):  
Nilo Ruiz-Riancho ◽  
Tahseen Saadoon ◽  
Alvaro Garcia ◽  
Daniel Grossegger ◽  
Robin Hudson-Griffiths
Keyword(s):  
Self Healing ◽  
Reflective Cracking ◽  
Rutting Resistance
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