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This paper investigates the ultimate strength behaviours of the unbonded prestressed concrete (PC) beams at cryogenic temperatures that aims to promote the applications of PC structures in cryogenic environments. Nineteen unbonded PC beams with different tension control stresses (0.4, 0.6, 0.75fptk) were tested at 20, −40, −70 and −100 °C. The structural performances of the unbonded prestressed reinforced...
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