Influence of Curing Humidity on the Compressive Strength of Gypsum-Cemented Similar Materials

Table 1

Material mixing scheme and the size of raw material.

Rock type	Density g/cm^3	Compressive strength/MPa	Model density g/cm^3	Model compressive strength/kPa	Mixing ratio	Water percent	Semihydrate gypsum/mesh	Calcium carbonate powder/mesh	Washed-out sand/mesh
Mudstone	1.7	34.6	1.13	100.2	773	1/9	300–400	300–400	80–100