Time domain reflectometry measurements of road basecourse moisture content
Platt, Ian; Woodhead, Ian; Richards, Sean D.; Tan, Adrian; Hagedorn, Michael; Herrington, P.; Cook, S.
This paper describes an empirical transform between the propagation time (tp) data obtained from a non invasive Time Domain Reflectometry (TDR) sensor to the percentage moisture content θᵥ within two different road making basecourse aggregate material. Results show that a simple quadratic fit between tₚ and θᵥ can be given leading to a maximum error in the estimate of 0.55%. It is also shown that the dielectric model underlying each of the basecourses is different enough to warrant the use of a unique quadratic function (i.e. different quadratic coefficients) for each.
Fields of Research0906 Electrical and Electronic Engineering; 090603 Industrial Electronics; 090502 Construction Engineering; 090507 Transport Engineering; 1007 Nanotechnology
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