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ciments phosphocalciques - GECO

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► Ciments brushitiques (DCPD)<br />

- réaction acide-base<br />

- mélange d’une phase liquide et d’une phase solide<br />

□ phase solide :<br />

phosphate tricalcique (> 97%)<br />

+ pyrophosphate de sodium<br />

□ phase liquide :<br />

10/02/2010<br />

acide orthophosphorique 4 M<br />

+ acide sulfurique 0,1 M<br />

Ca3(PO4)2 (s) + H3PO4 (aq) + 6H2O 3CaHPO4,2H2O<br />

■ TCP et AOP réagissent avec de l ’eau DCPD

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