Table 1 Mineralogical composition of soils with shrink-swell behaviour
Minerals | Formula | USA, Texas, Taylor (Arthur O. 1964) Formation | Dutch, River Clay (Tollenaar et al. 2017) | Portugal, river Tejo, clay | Hungary, Körös river dike |
|---|---|---|---|---|---|
Quartz | SiO2 | 20 | 50.2 | 43 | 30 |
Mikroklin | KAlSi3O8 | – | – | 20 | 3 |
Albite | NaAlSi3O8 | – | – | 8 | 8 |
Montmorillonite | (Na,Ca)(Al,Mg)2[Si4O10(OH)2]·H2O | 50 | – | 5 | 45 |
Chlorite | Mg5Al(Si3Al)O10(OH)8 | – | – | 8 | 8 |
Illite | (K,H3O+)(Al,Mg,Fe)2[(Si,Al)4O10(OH)2·(H2O)] | 8 | – | 7 | 6 |
Calcite | CaCO3 | 10 | 5.8 | 2 | – |
Anorthite | Ca(Al2Si2O8) | – | 6.8 | – | – |
Dolomite | (Ca,Mg)(CO3)2 | – | – | 2 | – |
Muscovite | KAl2[AlSi3O10(OH)2] | – | 16.2 | 5 | – |
Kaolinite | Al2O3·2SiO2·2H2O | 8 | – | – | – |
Vermiculite | (Mg,Fe,Al)3((Al,Si)4O10)(OH)2.4H2O | – | 21 | – | – |