Research Article
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) |