Improvement of the Early-Age Compressive Strength, Water Permeability, and Sulfuric Acid Resistance of Scoria-Based Mortars/Concrete Using Limestone Filler

Table 6

Constants , , , and and regression coefficient () of the correlation between the experimental data and the proposed equations.

Curing time (day)	Mechanical strength
2		21.5	−44	−40.1	94.8	0.927
		4.9	−8.5	−13.9	39.4	0.856
7		39.3	−51.1	−41.7	35	0.959
		6.7	−6.6	−2.2	−10	0.914
28		50.3	−51.1	−39.9	−18.6	0.958
		7.9	−4.5	−4.2	1.2	0.811
90		56.5	−29.7	−42	−37	0.930
		8	−2.4	−2.9	8.2	0.671