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Setting reaction and resultant structure of zinc phosphate cement in various orthophosphoric acid cement-forming liquids

Park, C.K. / Silsbee, M.R. / Roy, D.M.

The setting reactions and resultant structure of zinc phosphate cements are largely based on the formation of hopeite (Zn₃(PO₄)₂ dot 4H₂O) and/or zinc phosphate hydrate (Zn₂P₂O₇ dot 3H₂O) when using orthophosphoric acid (OPA) cement-forming liquids. OPA solutions buffered with aluminum and zinc ion produced better mechanical properties than nonbuffer OPA solutions because of the formation of hopeite and an amorphous phase. Development of the crystalline forms of the phosphate hydrates of zinc and magnesium were retarded and/or prevented by the incorporation of aluminum and zinc ion in the cement-forming liquid.

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Setting reaction and resultant structure of zinc phosphate cement in various orthophosphoric acid cement-forming liquids

Park, C.K. / Silsbee, M.R. / Roy, D.M.

The setting reactions and resultant structure of zinc phosphate cements are largely based on the formation of hopeite (Zn₃(PO₄)₂ dot 4H₂O) and/or zinc phosphate hydrate (Zn₂P₂O₇ dot 3H₂O) when using orthophosphoric acid (OPA) cement-forming liquids. OPA solutions buffered with aluminum and zinc ion produced better mechanical properties than nonbuffer OPA solutions because of the formation of hopeite and an amorphous phase. Development of the crystalline forms of the phosphate hydrates of zinc and magnesium were retarded and/or prevented by the incorporation of aluminum and zinc ion in the cement-forming liquid.

Setting reaction and resultant structure of zinc phosphate cement in various orthophosphoric acid cement-forming liquids

Park, C.K. / Silsbee, M.R. / Roy, D.M.

The setting reactions and resultant structure of zinc phosphate cements are largely based on the formation of hopeite (Zn₃(PO₄)₂ dot 4H₂O) and/or zinc phosphate hydrate (Zn₂P₂O₇ dot 3H₂O) when using orthophosphoric acid (OPA) cement-forming liquids. OPA solutions buffered with aluminum and zinc ion produced better mechanical properties than nonbuffer OPA solutions because of the formation of hopeite and an amorphous phase. Development of the crystalline forms of the phosphate hydrates of zinc and magnesium were retarded and/or prevented by the incorporation of aluminum and zinc ion in the cement-forming liquid.

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Title:

Setting reaction and resultant structure of zinc phosphate cement in various orthophosphoric acid cement-forming liquids

Contributors:

Park, C.K. (author) / Silsbee, M.R. (author) / Roy, D.M. (author)

Published in:

Cement and Concrete Research ; 28 ; 141-150

Publication date:

1998

Size:

10 Seiten, 3 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(97)00223-8

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Ansteifen (hydraulisch) , mechanische Eigenschaft , Zinkverbindung , Hydrat , anorganisches Salz , Wasserabbinden von Zement , Zinkphosphat , Zinkphosphathydrat , Orthophosphat , hydraulischer Zement , Neuentwicklung , Dentalzement

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