Management, Vol. 3, Issue 5, Dec  2020, Pages 30-39; DOI:

Management of Chip Seal Through Binder Rate Adjustments Predicted by LiDAR Reflectivity Data

Management, Vol. 3, Issue 5, Dec  2020, Pages 30-39.


Kai-Wei Liu 1,2* , Darlene Goehl 1 , Charles Gurganus 1 , Jia-Lin Hsu 1

1 Texas A&M Transportation Institute, Texas A&M University, College Station, Texas, USA

2 Department of Engineering, Texas A&M University, Corpus Christi, Texas, USA

Received: 18 October 2020; Accepted: 5 November 2020; Published: 20 November 2020

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This study removes subjectivity from the chip seal binder rate adjustment process which leads to reduced risk for state agencies by using mobile Light Detecting and Ranging (LiDAR) reflectivity data. An automated data analysis method was developed earlier to describe pavement condition changes. In this study, the laser reflected signal intensity of different pavement surface collected using a LiDAR unit was processed and analyzed to generate binder rate adjustments for different chip seal roadways in Texas. The results show that using the average of binder rate adjustment in the left wheel path (LTWP) and right wheel path (RTWP) every 1 mile is feasible and operational for a construction standpoint. However, when the difference of median rate between LTWP and RTWP is greater than 0.03, the use of variable rate nozzle for LTWP and RTWP is highly recommended. The expected surface conditions based on the comparisons between actual and LiDAR predicted binder rates were evaluated and matched well with the observations from the high definition video (HDV) system.


Mobile LiDAR, Chip Seal, Reflectivity, Pavement Management


© 2017 by the authors. Licensee International Technology and Science Press Limited. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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