Largo, FL – International Cybernetics (ICC) engineers had the privilege of working closely with other industry leaders for the last 2 years to develop a new approach to crack measurement. The new standard has now been published as ASTM E3303 Standard Practice for Generating Pavement Surface Cracking Indices from Digital Images.
As part of ASTM International’s vehicle-pavement systems committee (E17), forward-thinking practitioners from both government and industry came together to develop and approve a new way to measure cracking to improve the current state of practice for pavement assessments of critical roadway infrastructure. The objective of the new standard is to improve the accuracy, repeatability, and reproducibility of pavement condition surveys, supporting data-based decisions by road agencies for years to come.
The biggest difference compared to existing standards is that human subjectivity has been removed from the definitions of crack types. The new standard introduces two objective parameters that measure the extent and severity of cracking: the Pavement Surface Cracking Metric (PSCM) and the Pavement Surface Condition Index (PSCI). These in turn are derived from other well-defined metrics including crack length, average crack width, and crack density. This means the approach can be readily implemented in automated systems.
We commend the entire committee for their work, including numerous people who provided feedback to the committee as various iterations of the standard were circulated. Thank you especially to chair Jerry Daleiden, P.E., members Charles Pilson, Ph.D. and Aaron Gerber, P.E., as well as our own Michael Nieminen, P.E., Danilo Balzarini, Ph.D., and James Erskine, CPEng.
Follow ICC for more information about practical uses of this standard that will be coming out in the months ahead.
The new standard is available online from ASTM.
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