Tag Archive for Tag: acids

Tag: acids Leaching by water and acids

Pure water dissolves lime and, to some extent, alumina from the compounds in the cement matrix resulting in increased permeability and eventually an amorphous residue of hydrated silica, iron oxide and alumina (Lea, 1970). This process, known as leaching, involves several stages, in which initially portlandite (CH) is dissolved and then attack on C-S-H and calcium aluminate hydrates takes place

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