Tests and Analysis on Thermal Expansion Behaviour of Steel Strand used in Prestressed Concrete Structure under Low Temperatures

International Journal of Concrete Structures and Materials

Table 1 Details of the sepcimens.

Item	Temperature range (°C)	Initial prestressing ratio, f_t/f_tk	Item	Temperature range (°C)	Initial prestressing ratio, f_t/f_tk
A1	20 to − 165	0	C-3	20 to − 165	0.5
A2	20 to − 165	0	D-1	20 to − 165	0.65
A3	20 to − 165	0	D-2	20 to − 165	0.65
B1	20 to − 165	0.4	D-3	20 to − 165	0.65
B2	20 to − 165	0.4	E-1	20 to − 165	0.75
B3	20 to − 165	0.4	E-2	20 to − 165	0.75
C1	20 to − 165	0.5	E-3	20 to − 165	0.75
C2	20 to − 165	0.5