Delayed Ettringite Formation (DEF) is a form of internal sulphate attack that compromises the integrity of concrete by inducing expansive crystallisation long after initial setting. When cement ...
Ettringite is a calcium aluminate trisulphate hydrate with the nominal formula Ca₆Al₂(SO₄)₃(OH)₁₂·26H₂O, crystallising as slender prismatic needles that radiate from nucleation sites in hydrating ...
Researchers have discovered that a mineral found naturally in cement--ettringite--can latch on to and detain a wily and worrisome radioactive contaminant. The contaminant is pertechnetate, an oxidized ...
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