Circumferential Expansion Property of Composite Wrapping System for Main Cable Protection of Suspension Bridge

Table 1

Details of specimen.

Specimen	Layer of light-cured prepreg	Layer of elastic	Outer diameter (mm)	Inner diameter (mm)	Height (mm)	Number	FRP required (m^2)	Elastic layer required (m^2)
G-1-X	1	—	304	300	150	3	0.177	—
G-2-X	2	—	308	300	150	3	0.318	—
G-3-X	3	—	312	300	150	3	0.459	—
G-1-R-X	1	1	308	300	150	3	0.177	0.141
G-2-R-X	2	1	312	300	150	3	0.318	0.141
G-3-R-X	3	1	316	300	150	3	0.459	0.141
G-1-2R-1	1	2	312	300	150	1	0.177	0.282
G-2-2R-1	2	2	316	300	150	1	0.318	0.282
G-3-2R-1	3	2	318	300	150	1	0.459	0.282

G-1: a layer of photocurable prepreg FRP; R: a layer of elastic layer; 2R: two layers of elastic layer; X: the label of each component in a set of specimens.