Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Reexamination Certificate
2002-06-07
2008-12-02
Marcantoni, Paul (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
C106S789000
Reexamination Certificate
active
07459020
ABSTRACT:
A cement admixture of a low environmental load type, capable of reducing hexavalent chromium, having a small slump loss or heat of hydration, hardly neutralized and capable of suppressing autogenous shrinkage to a low level; a cement composition; and cement concrete employing it, are presented. The cement admixture comprises a slowly cooled slag powder which contains melilite as the main component and which has a carbon dioxide absorption of at least 2%, has a CO2absorption of at least 2%, has a loss on ignition of at most 5%, contains at least 0.5% of sulfur present as non-sulfuric acid form sulfur and/or has a concentration of non-sulfuric acid form sulfur to elute, of at least 100 mg/l, and further, preferably, has a degree of vitrification of at most 30%, a melilite lattice constant a of from 7.73 to 7.82 and/or a Blaine specific surface area of at least 4,000 cm2/g.
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Daimon Masaki
Higuchi Takayuki
Morioka Minoru
Nakashima Yasuhiro
Sakai Etuo
Denki Kagaku Kogyo Kabushiki Kaisha
Marcantoni Paul
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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