Durability to Chemical Attack by Acids of Epoxy Microconcretes by Comparison to Cementitious Ones

Table 9

Characteristic FTIR bands before chemical attack.

Band (cm)	Assignment	Cement hydrate
1472	O-H bending	Portlandite CH
1086	S-O stretching	sulfate ions
1046	Si-O stretching	Calcium silicate hydrate C-S-H
875	Al-O-H bending	Ettringite AFm
778	Si-O-Al bending	AFt, AFm
680	Al-O	AlO4