Influence of amorphous Al(OH)3 on the hydration of tricalcium aluminate
1968; Wiley; Volume: 18; Issue: 9 Linguagem: Inglês
10.1002/jctb.5010180904
ISSN1934-998X
AutoresJ. G. M. de Jong, H.N. Stein, J.M. Stevels,
Tópico(s)Concrete and Cement Materials Research
ResumoAbstract The influence of amorphous Al(OH) 3 on the hydration of tricalcium aluminate was investigated in pastes and in suspensions. In suspensions it was found that amorphous Al(OH) 3 started to dissolve almost immediately, and a stage was passed in which most of the anions present in the aqueous phase were polymeric aluminate units. Paste hydration results could be understood by assuming that highly soluble amorphous Al(OH) 3 dissolved and, by so doing, adjusted the concentrations in the aqueous phase so as to cause precipitation of some less soluble form of Al(OH) 3 , thereby retarding hydration.
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