Freezing-Thawing Damage Mechanism of Coal Gangue Concrete Based on Low-Field Nuclear Magnetic Resonance, Scanning Electron Microscopy, and N₂ Adsorption

Table 3

Mixture ratio of coal gangue ceramsite concrete.

Specimen type	Cement (kg.m^−3)	Water (kg.m^−3)	Water-cement ratio	Gravel (kg.m^−3)	Coal gangue (kg.m^−3)	Sand (kg.m^−3)
C0	355	160	0.45	1225	0	660
C0M2	355	160	0.45	980	168	660
C0M4	355	160	0.45	735	337	660
C0M6	355	160	0.45	490	505	660