Mineral modified magnesium-oxysulfate-based composite cementing material
A composite gelling material, magnesium oxysulfate-based technology, applied in the field of mineral modified magnesium oxysulfide-based composite gelling materials, to achieve the effect of delaying the hydration process, reducing the heat of hydration, good mechanical performance stability and water resistance
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[0026] Example 1 to Example 6 and Comparative Example 1 to Comparative Example 6 are selected: industrial grade magnesium sulfate heptahydrate produced in Tianjin (see Table 2 for specific components); light burnt magnesium oxide powder produced in Yingkou (see Table 3 for specific components) , The particle size of the light burned magnesia powder is concentrated in 0.76 ~ 0.85μm; II grade fly ash; S95 mineral powder (also known as slag).
[0027] Table 2 The chemical composition of magnesium sulfate heptahydrate
[0028]
[0029] Table 3 Chemical composition of light burned magnesia
[0030]
[0031] If the weight parts of light-burned magnesia powder in the gelling materials listed in Table 1 is recorded as x, the weight parts of citric acid modifier (ie citric acid or a mixture of citric acid and water glass) is recorded as y, mineral The weight parts of the modifier (ie fly ash or mineral powder) is recorded as z, and the value of [y / (x+y)]×100% is taken as the content of the c...
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