| 摘要 |
A method for producing a cement which rapidly acquires good strength and is resistant to corrosion using a novel chemical production technology. The inventive method can be used to produce cements having properties rendering the cement suitable for use in diverse fields including the construction of oil wells, pipelines, etc. The invention also relates to a Portland-type cement which rapidly acquires mechanical strength, which has a shelf-life of up to 20 years under normal service conditions and which contains 4% molybdenum trioxide. The inventive cement is characterised in that it has a fineness of more than 4200 cm2/g. The invention is also characterised in that the cement has a minimum strength of 900 psi at 100° F. for 8 hours from the moment of setting and in that the cement has a minimum strength of 2000 psi at 140° F. after 8 hours from setting, without the addition of any additives, which enables reduction in the water necessary to achieve a pre-determined slump.
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