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Portland cement and its major constituent phases

Portland cement clinkers contain small amounts of alkalis and sulphates derived from the raw materials and fuel. Both alkalis and SO3 can be present in the major clinker phases, but tend to combine preferentially with each other to form alkali or potassium calcium sulphates, and it is necessary to consider these components together. In addition, silicate and aluminate phases containing sulphate can form either as intermediates or in undesirable deposits in eement making, and a calcium aluminate sulphate is a major constituent of some expansive and other speeial cements. [Pg.42]

See other pages where Portland cement and its major constituent phases is mentioned: [Pg.1]    [Pg.3]    [Pg.5]    [Pg.9]    [Pg.13]    [Pg.15]    [Pg.19]    [Pg.21]    [Pg.23]    [Pg.25]    [Pg.27]    [Pg.29]    [Pg.31]    [Pg.1]    [Pg.3]    [Pg.5]    [Pg.9]    [Pg.13]    [Pg.15]    [Pg.19]    [Pg.21]    [Pg.23]    [Pg.25]    [Pg.27]    [Pg.29]    [Pg.31]   


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Constituent phases

Portland cement phases

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