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Rapid setting type cement

A cement and fast technology, applied in the field of cement materials, can solve the problems of prolonging the setting time of cement, affecting the early strength of cement, prolonging the construction time, etc., and achieving the effect of shortening the setting time, shortening the setting time, and promoting the setting.

Active Publication Date: 2020-05-08
DENGFENG SONGJI CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early hydration is relatively slow, which leads to the prolongation of the setting time of the cement, and the prolongation of the setting time of the cement will not only prolong the later construction time, but also seriously affect the early strength of the cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of rapid setting type cement, cement raw material comprises 40 parts of cement clinker, 8 parts of fine sand, 5 parts of fly ash, 9 parts of lime, 3 parts of triethanolamine, 2 parts of diethanolamine, 6 parts of water glass, 2 parts of accelerator; the accelerator includes 7 parts of magnesium fluorosilicate and 3 parts of aluminum sulfate in parts by weight.

Embodiment 2

[0043] A kind of rapid setting type cement, the cement raw material comprises 45 parts of cement clinker, 10 parts of fine sand, 7 parts of fly ash, 10 parts of lime, 4 parts of triethanolamine, 3 parts of diethanolamine, 8 parts of water glass, 3 parts of accelerator; the accelerator includes 8 parts of magnesium fluorosilicate and 4 parts of aluminum sulfate by weight.

Embodiment 3

[0045] A kind of rapid setting type cement, cement raw material comprises 50 parts of cement clinker, 11 parts of fine sand, 9 parts of fly ash, 12 parts of lime, 6 parts of triethanolamine, 4 parts of diethanolamine, 9 parts of water glass, 5 parts of accelerator; the accelerator includes 9 parts of magnesium fluorosilicate and 5 parts of aluminum sulfate in parts by weight.

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PUM

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Abstract

The invention discloses rapid setting type cement. According to the technical scheme, the cement material is characterized by comprising the following raw materials in parts by weight: 40-60 parts ofcement clinker, 8-14 parts of fine sand, 5-12 parts of fly ash, 9-16 parts of lime, 3-9 parts of triethanolamine, 2-6 parts of diethanolamine, 6-12 parts of water glass and 2-8 parts of an accelerator, and the effect of shortening the setting time of cement is achieved.

Description

technical field [0001] The invention relates to the field of cement materials, in particular to a fast-setting cement. Background technique [0002] Cement is mainly a kind of cement clinker formed by calcining limestone raw materials, clay raw materials and iron ore powder raw materials as the main raw materials. The cement clinker mainly includes CaO, SiO 2 、Al 2 o 3 , Fe 2 o 3 composition, the total content of which is usually above 95%, and the main minerals in cement include tricalcium silicate (C 3 S), dicalcium silicate (C 2 S), tricalcium aluminate (C 3 A), tetracalcium aluminoferrite (C 4 AF), usually, the cement hydration reaction can be simplified to silicon phase reaction, that is, C 3 S, C 2 S hydration generates C-S-H gel and CH crystals, due to C 2 S activity is low, and its hydration onset time is very long, about 10 days. Aluminum phase reactions usually involve sulfate and C 3 The dissolution of A and the precipitation of AFt (ettringite), due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/02C04B7/19
CPCC04B7/243C04B7/26C04B7/02C04B7/19C04B7/1535Y02P40/10
Inventor 李天义汤洪伟李晓武
Owner DENGFENG SONGJI CEMENT