Title: Fiber Optic Monitoring of a New Rapid-Setting, Cure-on-Demand Polymer Resin for Roadway and Structure Repair

Authors: Matthew Davis, Tyler W. Farnsworth, Andrew Williams, Eric Smith, Alexander S. Brand, T. Trevor Painter

DOI: 10.33599/nasampe/s.21.0431

Abstract: This paper presents the combination of a rapid-setting, cure-on-demand polymer resin with fiber optic monitoring to enable the repair and long-term assessment of concrete roadways and structures. The durability of pavement structures diminishes over time due to a number of factors, such as environmental weathering, thermal cycling, fatigue from traffic, and chemical attack, thereby requiring the roadway surface to be periodically inspected and repaired. Unlike commercial rapid-setting cementitious-based repair materials, the presented polymer repair material exhibits a long working life (>5 hours) with high strength being achieved in just 1 hour after the curing process has been initiated. This technology can be used to patch cracks and holes, restoring the original integrity of the structure or surface. In this study, High-Definition Fiber Optic Sensors (HD-FOS) were embedded during a repair and used to determine when the repair patch had stabilized and finished curing. The rapid-setting polymer patch exhibited a 2-hour compressive strength of 58.7 MPa (8,519 psi, ASTM C39), 1-day bond strength of 9.97 MPa to PCC (1,446 psi, ASTM C882, PCC = Portland Cement Concrete), and a 2-hour modulus of elasticity of 19 GPa (2,740 ksi, ASTM C469). The HD-FOS sensors were left in place to demonstrate a method of monitoring the repair and performing periodic non-destructive inspection. The combination of these two technologies enables the completion and monitoring of repairs on buildings, bridges, and roadways to increase the integrity of the country’s infrastructure.

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Conference: SAMPE NEXUS 2021

Publication Date: 2021/06/29

SKU: TP21-0000000431

Pages: 11

Price: FREE