Development of a New Type of Alkali-Free Liquid Accelerator for Wet Shotcrete in Coal Mine and Its Engineering Application

Table 14

Effects of WT-1 type accelerator on the strength of cement paste.

Test number	Cement	Content of accelerator/%	Average compressive strength/MPa		Compressive strength ratio of 28 days/%
			1 d	28 d
1; 2	JZ; PT	0	7.8; 7.2	43.9; 43.1	100; 100
3; 4	JZ; PT	6	13.6; 12.5	41.4; 40.2	94.3; 93.3