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#Bengali pdf microsoft paint windows
System Requirements: Supported Operating Systems Windows Server 2003, Windows Vista, Windows XP Service Pack 2.
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It is the type of cement that developed a higher rate of gain of strength and must not be confused with quick setting cement which only set quickly.so this cement can be used in the marine structures. Higher resistance against the attack of chlorides and sulfate.Therefore, this cement can be used in mass concreting. The heat of hydration of Portland slag cement is lower than OPC.This cement is prepared by mixing granulated blast furnace slag, hard burnt gypsum, and cement clinkers in suitable proportions.Paint manufacturers replaced lead white with a less toxic substitute, which can even be used to colour food titanium white (titanium dioxide). Some pigments are toxic, such as those used in lead paint. Zinc oxide is a weaker white pigment with some important usages. The main modern white hiding pigment is Titanium dioxide. The pigment is mixed in a finest powdered state. In order to make a cement paste of normal consistency, the percentage of water varies from 25 to 35%.Ĭolored pigment is manufactured by mixing of color pigments (5-10 %) with OPC.As per Vicat’s test ‘the percentage of water added to the cement at which the needle can not penetrate 5-7 mm from bottom of the mould is called consistency.Vicat’s apparatus is used to perform this test.This test determines the percentage of water required to make workable cement paste.
