Table 3.

Proportions of the mortar mix.

Type	W/C (%)	S/C	Unit Content (kg/m3)			Anti-Freezing Agent (C × %)
			W	C	S	CN
CN0	50	2.0	315	631	1262	0
CN7						7
CN9						9
CN11						11
CN13						13

Note: W/C: water cement ratio; S/C: sand cement ratio; CN0: Mixing amount of anti-freezing agent = 0%; CN7: Mixing amount of anti-freezing agent = 7%; CN9: Mixing amount of anti-freezing agent = 9%; CN11: Mixing amount of anti-freezing agent = 11%; CN13: Mixing amount of anti-freezing agent = 13%