Study on Strength and Microstructure of Cement-Based Materials Containing Combination Mineral Admixtures

Table 5

Mix proportion of pastes and compressive strength of paste/MPa.

Samples	Mineral admixture content (%)	Cement (g)	Glass powder (g)	Limestone powder (g)	Steel slag powder (g)	⁢Compressive strength (MPa)
						7 d	28 d	90 d
NPC	0	1.00	—	—	—	31.5	55.3	58.0
GL1	15	0.85	0.075	0.075	—	23.5	40.6	50.6
GL2	30	0.7	0.15	0.15	—	18.8	28.8	41.9
GL3	45	0.55	0.225	0.225	—	12.4	26.2	38.2
GS1	15	0.85	0.075	—	0.075	29.1	44.4	52.2
GS2	30	0.7	0.15	—	0.15	19.5	32.7	41.7
GS3	45	0.55	0.225	—	0.225	13.9	27.0	33.9
LS1	15	0.85	—	0.075	0.075	32.2	48.4	58.9
LS2	30	0.7	—	0.15	0.15	31.8	39.0	49.6
LS3	45	0.55	—	0.225	0.225	19.8	29.3	36.1
GLS1	15	0.85	0.05	0.05	0.05	32.6	50.2	56.6
GLS2	30	0.7	0.1	0.1	0.1	23.2	40.9	44.7
GLS3	45	0.55	0.15	0.15	0.15	17.2	28.9	32.0

Notes. G: glass; L: limestone; S: steel slag.