Influencing Factors on the Interface Microhardness of Lightweight Aggregate Concrete Consisting of Glazed Hollow Bead

Figure 11

The influence of water to cement ratio on the interfacial HV of cement paste ((a) for 7 d, (b) for 14 d, (c) for 28 d, and (d) for 56 d).

(a)

(b)

(c)

(d)