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See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/331471758 Sustainable Pavement Maintenance and Microsurfacing presentation TRB 2010 Presentation January 2012 CITATIONS READS 0 36

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See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/331471758

Sustainable Pavement Maintenance and Microsurfacing presentation TRB 2010

Presentation · January 2012

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2 authors: Some of the authors of this publication are also working on these related projects: AASHTO Partnering Handbook, Second Edition View project Long Term Pavement Performance Program View project Douglas D. Gransberg Gransberg & Associates Inc.

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Susan Tighe University of Waterloo

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Douglas D Gransberg, PhD, PE Iowa State University & Susan Tighe, PhD, PEng University of Waterloo

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 Project selection is the most important step

in the microsurfacing design process.

Don’t use on structurally deficient pavement
Best used for rutting, oxidation, loss of friction.

 The majority of the respondents require the

contractor to develop the job mix formula (i.e. the mix design)

 Most said qualified competition was

inadequate:

Most did not advertise a consistent amount of work
Most did not prequalify micro contractors

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 Evaluate the differences in microsurfacing

costs and performance in the eight US states that require a warranty versus a similar number and geographical distribution of those that do not.

 Investigate and quantify the environmental

benefits of microsurfacing and provide hard, factual justification for picking micro over a lower priced option if all other technical considerations were equal.

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 There are no rigorous field tests based on a

rational quantification of measurable microsurfacing properties

develop a suite of field tests that allow an inspector

to test the microsurfacing mix after it has been laid

tests to identify when the mix has cured to a

sufficient degree to open it to traffic without fear of damaging it.

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 Environmental sustainability research that is

preservation and maintenance programs is not commonly practiced in the US and Canada.

 An assessment tool to quantify sustainability

in the pavement preservation and maintenance context is both missing and required.

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 The case studies showed sustainability can be

incorporated into pavement preservation and maintenance practices.

 Environmental sustainability metrics should

be developed and integrated into pavement preservation and maintenance treatment programming.

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 Develop fundamental data on the relative

environmental sustainability of common pavement preservation and maintenance treatments.

 Develop pavement preservation and

maintenance-specific life cycle assessment and cost analysis method that includes values for:

Carbon sequestration, resource renewability, and
ther salient elements of sustainability
Furnish a rational approach to treatment selection.

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 Develop training and information that

quantifies the importance of preservation and maintenance treatments in the sustainability impact factor areas.

 Research to adapt recycled and alternate

materials for use in pavement preservation and maintenance treatments.

 Research to develop appropriate noise

standards for pavement preservation and maintenance and life cycle assessment.

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 Quantify the contribution that crack sealing

makes to the sustainability of all types of pavement surfaces to demonstrate its importance in sustainable pavement preservation and maintenance.