Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Reexamination Certificate
2006-10-12
2011-12-06
Marcantoni, Paul (Department: 1731)
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
C106S724000, C106S726000, C106S727000, C106S728000, C106S823000, C524S005000
Reexamination Certificate
active
08070875
ABSTRACT:
The present invention relates to dispersants such as superplasticizers for hydratable cementitious compositions, and more particularly to methods for achieving variable degrees of longer slump life in concrete and mortar without loss of stability. This is achieved by using two admixture systems. The first admixture composition has multi-components for achieving initial-slump-enhancement, later-slump-retention, and limiting initial slump. The second admixture composition has the later-slump-enhancing component. Alternatively, conventional water reducers or superplasticizers can be employed initially, followed by the later-slump-enhancing admixture composition.
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Jeknavorian Ara A.
Jovanovic Ivana
Koyata Hideo
McGuire Darrick B.
Leon Craig K.
Marcantoni Paul
W.R. Grace & Co.-Conn.
Williams Stephan P.
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