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

Table 5

Flexural strengths of the investigated mortars after various curing times.

Mix type	Flexural strength (MPa)
	2 days’ curing	7 days’ curing	28 days’ curing	90 days’ curing
VS0LF0	4.8	6.8	7.6	8.1
VS0LF5	3.8	6.4	8	8
VS0LF10	3.5	6.9	7.7	7.6
VS0LF15	2.7	6.1	7.1	7.8
VS10LF0	4.3	5.9	7.4	7.8
VS10LF5	3.6	5.5	7.2	7.6
VS10LF10	3.8	6.0	7.1	7.6
VS10LF15	2.3	5.4	6.5	7.2
VS20LF0	2.8	5.4	6.8	7.3
VS20LF5	3.5	5.1	7.1	7.5
VS20LF10	2.7	5.4	6.7	7.4
VS20LF15	2.2	4.7	6.5	7.5
VS30LF0	2.2	4.9	6.4	7.4
VS30LF5	2.1	4.1	6.3	7.4
VS30LF10	2.2	4.4	6.6	7.3
VS30LF15	1.8	3.8	5.6	7.2