Effect of Incorporating Nanoporous Metal Phosphate Materials on the Compressive Strength of Portland Cement

Table 2

Composition and physical characteristics of concrete specimens used in compression tests.

Material	Mass-normalized laboratory composition	Mass-normalized composition: Core 1	Mass-normalized composition: Core 2	Mass-normalized composition: Core 3	Mass-normalized composition: Core 4	Mass Normalized Composition: Core 5
Cement	0.27	0.29	0.29	0.28	0.28	0.27
Fly ash	0.04	0.04	0.04	0.04	0.04	0.04
Fine aggregate	0.51	0.47	0.51	0.46	0.41	0.36
Water	0.10	0.14	0.14	0.17	0.19	0.22
Iron particles	0.04	0.04	—	—	—	—
NP-MPO	—	—	—	0.04	0.08	0.11
Polyheed 997	0.007	0.007	0.007	0.007	0.007	0.007
Air Content	$6.0\pm 1.5$%	$6.0\pm 1.5$%	$6.0\pm 1.5$%	$6.0\pm 1.5$%	$6.0\pm 1.5$%	$6.0\pm 1.5$%
NP-MPO	0.00	0.00	0.00	0.04	0.08	0.12
Physical characteristics
Length, cm	—	4.17	4.35	4.41	4.62	4.62
Diameter, cm	—	2.56	2.58	2.56	2.57	2.58
Surface area, cm^2	—	42.71	44.25	44.60	46.12	46.32
Volume, cm^3	—	20.59	21.57	21.78	22.70	22.86
Density, g/cm^3	—	2.21	2.08	2.06	2.02	1.99