FBG-Based Sensing for Structural Health Monitoring of Road Infrastructure

Public road infrastructure is developed all around the world. To save resources, ensure public safety, and provide longer-lasting infrastructure, structural health monitoring (SHM) applications for roads have to be researched developed. Asphalt one of largest used surface materials building industry. This material also provides relatively easy fiber optical sensor technology installment, which can effectively SHM applications—road as well resource optimization when or their repairs are planned. article focuses on research Bragg grating (FBG) temperature strain in SHM, part greater interdisciplinary project started at Riga Technical University year 2017. Experimental work described this was realized Latvian sites where FBG sensors were installed into asphalt pavement, experiments carried out two main scenarios. Firstly, a controlled environment with calibrated falling weight deflectometer (FWD) test sensors. Secondly, by evaluating real-time traffic impact measured temperature, different types vehicles passed span embedded. The findings illustrate that gathering combining data from FWD measurements, measurements embedded providing essential information how pavement structure could sustain load about intensity specific section, life evaluated predicted. Thus, it enables optimal future design necessary requirements constraints efficient use, maintenance, timely roads, directly contributing overall safety our transportation system.