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Wednesday, 24 May 2017
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Raw materials & technologies, Technologies

Short-term evaluation of crack sealing and filling

Friday, 1 April 2016

A paper presents a short-term evaluation of crack sealing and filling on two test roads in Indiana, USA.

Crack sealing materials were used regardless of their intended climate conditions. Source: lichtkunst.73/pixelio.de

Crack sealing materials were used regardless of their intended climate conditions. Source: lichtkunst.73/pixelio.de

A nation-wide survey was conducted including states in Canada in order to review the current crack sealing and filling practice.

Nine crack sealing and filling materials were selected

Based on the review, nine crack sealing and filling materials were selected and both crack and pavement performances were evaluated using Falling Weight Deflectometer (FWD), International Roughness Index (IRI), ultrasonic pulse velocity (UPV), and visual inspection. The data was collected over 10-month period upon completion of test section constructions in 2013.

Crack sealing didn't show improvements in short-term

Based on the survey and review of the practice of crack sealing and filling in 2012, sealing and filling materials were used regardless of their intended climate condition according to ASTM D 6690 specification. Among the four test methods, only FWD provided statistically meaningful differences between treated sections and the control section and between routed and non-routed subsections. In addition, visual inspection did not provide meaningful results for the evaluation of crack sealing and filling short-term performances (10 month).

The sections applied with the crack sealing and filling materials did not show any improvements in terms of the pavement and crack performances. In addition, the routed subsection performances, in general, were not significantly different from that of the non-routed subsections. Among nine different products evaluated in this study, only RoadSavor 201 and RoadSavor 211 from Crafco showed the best performance in the non-routed and routed subsections.

The study is published in: Construction and Building Materials, Volume 113, 15 June 2016, Pages 843-850.

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