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

Figure 7

Apparent state and Shore hardness of retarder at different stages of curing. (a) Fluid state and 0. (b) Semifluid and 60.8. (c) Solid and 80.5. (d) Solid and 93.0.

(a)

(b)

(c)

(d)