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Modification method of sulfur aluminate cement

A technology of sulphoaluminate cement and Portland cement, which is applied in the field of sulphoaluminate cement modification, and can solve problems such as increased cost, relatively high cost, and price barriers for high-quality projects

Active Publication Date: 2004-07-21
陈智丰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sulphoaluminate cement is a variety commonly used in ordinary cement at present. Although its engineering characteristics and physical indicators are better than Portland cement, its relative cost is higher than that of Portland cement.
When a series of chemical indicators such as early setting, rapid hardening, and low alkali are required to be further improved in special engineering construction, it is necessary to mix relatively expensive natural anhydrite or other organic modifiers, which will inevitably further improve its performance. cost, so that the modified sulphoaluminate cement can only be used in special projects or in emergency and emergency repair occasions.
This has formed a price barrier to the promotion and application of modified sulphoaluminate cement to create more high-quality projects

Method used

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Examples

Experimental program
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Embodiment Construction

[0007] In the following, different examples are given respectively with regard to sulphoaluminate cement or clinker as base material, and Portland cement or clinker as modifier.

[0008] serial number

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[0012] Repeated experiments and modern detection methods (including extension X-diffraction, electron microscope scanning) have proved that the modification of sulphoaluminate cement can be achieved by using Portland cement or clinker as a modifier, which improves its early strength, Rapid hardening, rapid setting, and low alkalinity indicators, and at the same time leave room for adding admixtures, which not only makes cement modification successful, but also greatly reduces the cost of modified sulfoaluminate cement, making The modified sulphoaluminate cement becomes the basic raw material for preparing quick-setting materials, quick repair materials and grouting repair...

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Abstract

A process for modifying the thioaluminate cement features that the thioaluminate cement is mixed with silicate cement as modifier and gypsum as modifying regulator. The modifier cement features quick solidification and hardening, high early strength, low content of alkali, and low cost.

Description

technical field [0001] The invention belongs to a method for modifying and increasing efficiency of ordinary cement, in particular to a method for modifying ordinary sulphoaluminate cement into special quality and purpose cement. Background technique [0002] Sulphoaluminate cement is a variety commonly used in ordinary cement at present. Although its engineering characteristics and physical indicators are better than Portland cement, its relative cost is higher than Portland cement. When a series of chemical indicators such as early setting, rapid hardening, and low alkali are required to be further improved in special engineering construction, it is necessary to mix relatively expensive natural anhydrite or other organic modifiers, which will inevitably further improve its performance. cost, so that the modified sulphoaluminate cement can only be used in special projects or occasions where it is necessary to rescue and repair. This has formed a price barrier to the popula...

Claims

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Application Information

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IPC IPC(8): C04B7/00C04B22/00C04B22/14C04B28/06
CPCC04B28/06
Inventor 陈智丰张振秋
Owner 陈智丰