Table 3 Frequencies and band allocations of infrared spectra.
Material | Frequency (cm−1) | Band allocation |
|---|---|---|
Clay sample | 3627 | OH, groups in the octahedral layer |
1736 | C = O elongation vibrations of esters | |
988 | C-H elongation vibrations of monosubstituted alkenes | |
Concrete waste | 2977 | Valence vibrations (N-H) of ammonium ions |
1749 | Elongation vibrations of C = C bonds | |
1410 | Water O-H deformation vibrations | |
872 | Valence vibrations of the C-F bond | |
Mix (Clay + 15% Concrete waste) | 3620 | OH, groups in the octahedral layer |
1738 | C = O elongation vibrations of esters | |
1367 | CH3 deformation vibrations of alkanes | |
1001 | Valence vibrations of the C-F bond | |
Mix (Clay + 20% Concrete Waste) | 3623 | OH, groups in the octahedral layer |
1738 | C = O elongation vibrations of esters (similar to 15%) | |
1367 | CH3 deformation vibrations of alkanes (similar to 15%) | |
1002 | Valence vibrations of the C-F bond (slight variation) | |
Clay + 25% Concrete Waste | 3580–3650 | Free OH groups and elongation vibrations of alcohols and phenols |
1739 | C = O elongation vibrations of esters | |
1426–997 | CH2 and CH3 deformation vibrations of alkanes, C-O of alcohols/phenols |
