Research on the Application of Prefabricated Load-Bearing Structure in Prefabricated Roadway in Filling Body

Figure 3

Strength ratio test results: (a) cement, (b) cement : fly ash = 8 : 2, (c) cement : fly ash = 7 : 3, and (d) cement : fly ash = 6 : 4.

(a)

(b)

(c)

(d)