Performance and Microstructural Analysis of Lightweight Concrete Blended with Nanosilica under Sulfate Attack

Table 1

Chemical composition of materials.

Chemical composition	Weight (%)
	Perlite	Aliven	NS	Cement
Silicon oxide (SiO2)	72.45	59.67	93.56	20.9
Titanium oxide (TiO2)	0.22	1.19	0.02	0.21
Aluminum oxide (Al2O3)	13.38	16.95	0.00	4.72
Iron oxide (Fe2O3)	1.35	9.79	0.39	3.20
Magnesium oxide (MgO)	0.08	4.13	0.13	1.80
Calcium oxide (CaO)	1.20	3.57	0.22	60.69
Sodium oxide (Na2O)	3.40	2.07	0.62	0.37
Potassium oxide (K2O)	4.57	1.28	0.02	0.61
Sulfur oxide (SO3)	0.09	0.04	0.30	0.13
Ignition losses at 1000°C	2.92	0.75	4.46	3.68