HEAT-RESISTANT CEMENT

PURPOSE:To obtain the heat-resistant cement appropriate as the binder for the fired cement-based material formed body and capable of providing a formed body low in coefficient of contraction when fired by specifying the Blaine specific surface and grain diameter distribution. CONSTITUTION:Cement mat...

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Bibliographic Details
Main Authors MAEDA ETSUTAKA, FUKUDA TAKEFUMI, MAEDA KATSUSUKE, TAKAMATSU TOMIO
Format Patent
LanguageEnglish
Published 09.10.1992
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:PURPOSE:To obtain the heat-resistant cement appropriate as the binder for the fired cement-based material formed body and capable of providing a formed body low in coefficient of contraction when fired by specifying the Blaine specific surface and grain diameter distribution. CONSTITUTION:Cement materials such as clinker and gypsum are mixed, crushed and then graded to produce a heat-resistant cement having 700-2500cm /g Blaine specific surface and with the content of cement having >=20mum grain diameter controlled to >=50wt.%. When this cement is used as the binder for the fired cement-based material formed body, the contraction of the formed body is reduced when fired, and the crack, crevice, etc., are hardly caused. Besides, the content of cement having <=5mum grain diameter is preferably controlled to <=17wt.%, that having <=10mum grain diameter to 5-30wt.%, that having <=20mum grain diameter to 10-50wt.% and that having <=100mum grain diameter to 70-95wt.%.
Bibliography:Application Number: JP19910073951