Experimental Investigation of MgAl-NO₂ and MgAl-CO₃ LDHs on Durability of Mortar and Concrete

Table 1

Main chemical composition of raw materials (%).

Composition	Cement	Fly ash	N-LDH	C-LDH
CaO	56.132	3.26	0.673	2.94
SiO2	23.056	52.99	0.276	0.593
Al2O3	7.62	36.25	41.54	25.1
MgO	4.9	0.62	55.43	58.9
SO3	3.56	—	0.0254	1.04
Fe2O3	2.36	2.74	0.0235	0.034
K2O	1.1	1.01	—
TiO2	0.51	1.32	—	0.097
MnO	0.28	0.028	—	—
CO2	—	—	—	10.8
Na2O	0.19	0.27	0.314	—
ZnO	—	—	1.244	0.388