Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Remote Sensing Application in Surveying Statewide Asphalt Pavement Aggregate Stockpile Inventory

Version 1 : Received: 13 December 2020 / Approved: 14 December 2020 / Online: 14 December 2020 (12:49:52 CET)

How to cite: Zokaei Ashtiani, M.; Muench, S.; Shean, D. Remote Sensing Application in Surveying Statewide Asphalt Pavement Aggregate Stockpile Inventory. Preprints 2020, 2020120330 (doi: 10.20944/preprints202012.0330.v1). Zokaei Ashtiani, M.; Muench, S.; Shean, D. Remote Sensing Application in Surveying Statewide Asphalt Pavement Aggregate Stockpile Inventory. Preprints 2020, 2020120330 (doi: 10.20944/preprints202012.0330.v1).

Abstract

This study introduces a remote sensing application using satellite imagery to survey a network-scale aggregate stockpile inventory. First, a real scale aggregate quarry site was surveyed using a small Unmanned Aerial Vehicle (sUAV) to produce digital terrain models that enabled analysis of aggregate pile geometry. Second, a lab experiment was designed and performed to validate the applicability of close-range Structure from Motion (SfM) photogrammetry for measuring aggregate piles' physical properties such as volume and density. The other part of the lab experiment delved into direct measurement of aggregate density under varying compaction efforts. These experimental results, in conjunction with some simplifying assumptions, enabled the calculation of aggregate stockpile volumes and estimated weights from satellite imagery. We estimated that an inventory of 4.4 and 1.1 million metric tons of crushed aggregates and Reclaimed Asphalt Pavement (RAP), respectively, stockpiled in Washington State for asphalt production in 2017. The merit of producing such database was further showcased in an example on the economic and environmental impacts of material transportation. We approximated that hauling aggregates from quarry plants to construction sites within Washington State incurs a cost of about $50 thousand to over $4 million, consumes about 0.25 to 20 TJ of energy, and emits 20 to over 1,500 tons of CO2-eq per asphalt plant annually.

Keywords

Hot Mix Asphalt; Aggregate Stockpile; RAP; Remote Sensing; Unmanned Aerial Vehicle; Drone; Photogrammetry; Structure from Motion; Density; Volume Calculation; Life Cycle Assessment

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