Advances in Civil Engineering

Research Article

Failure Mechanism and Mechanical Properties of a Retard-Bonded Prestressed Concrete Girder While Curing

Table 1

Properties and states of retard-bonded agent at different degrees of curing.
SpecimenPrestressed tensile testGirder load-carrying capacity test
DateShore hardness value of RBCuring state of the retarderDateShore hardness value of RBCuring state of the retarder
PC 1-0-02017.07.180Dark grey viscous liquid2017.07.190Dark grey viscous liquid
PC 2-0-62017.07.180Dark grey viscous liquid2017.10.2864.8Grey solid, extremely hard
PC 3-0-82017.07.180Dark grey viscous liquid2017.12.1781.3Grey solid, extremely hard
PC 4-0-92017.07.180Dark grey viscous liquid2018.03.1793.0Grey solid, extremely hard
PC 5-6-82017.10.2560.8Grey-yellow solid, harder2017.12.1881.3Grey solid, extremely hard
PC 6-8-82017.12.1580.5Grey solid, extremely hard2017.12.1881.3Grey solid, extremely hard
Note. The specimen was named PC , where the first asterisk represents specimen number, the second asterisk indicates the hardness of the retard-bonded agent when the PT is stretched, and the last asterisk indicates the Shore hardness of the retard-bonded agent.