Properties of Calcium Acetate Manufactured with Etching Waste Solution and Limestone Sludge as a Cementitious High-Early-Strength Admixture

Table 9

pH of cement paste as a function of time.

HESA	Admixture proportion (cement  ×  %)	pH of cement paste as a function of time
		Immediate	60 minutes	24 hours
	OPC	12.2	12.4	12.4
Calcium acetate	OPC-A1	11.8	12.2	12.3
	OPC-A2	10.2	11.0	12.1
	OPC-A3	9.0	10.2	11.9
Calcium formate	OPC-F1	12.3	12.2	12.4
	OPC-F2	12.2	12.3	12.3
	OPC-F3	12.1	12.2	12.1