FBG-Based Creep Analysis of GFRP Materials Embedded in Concrete

Table 1

Parameter values of test materials.

Parameter	Unit	Value
Elastic modulus of GFRP bar	GPa	50
Ultimate tensile strength of GFRP bar	MPa	853
GFRP bar diameter	mm	26
Anchorage length of GFRP bar in concrete	mm	300
Anchorage length of steel tube	mm	400
Length of free part of GFRP bar	mm	500
Ratio of water over soundless breaking	—	0.3 : 1
Curing time of concrete	day	28
Ultimate compressive strength of concrete	MPa	34.5