Measurement of Prestressing Force in Pretensioned UHPC Deck Using a Fiber Optic FBG Sensor Embedded in a 7-Wire Strand

Table 1

Material properties of UHPC.

Material properties	Value
Compressive strength	180 MPa
Modulus of elasticity	45,000 MPa
Thermal expansion coefficient ()
Poisson’s ratio	0.20
Unit weight	25.5 kN/m^3