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Sulphoaluminate cement material with retarding effect

A technology of sulfoaluminate cement and setting retardation, applied in the field of cement materials, can solve the problems of limited source of retarder, high effect, toxic cost, etc. Effect

Pending Publication Date: 2022-04-05
青海交通职业技术学院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these retarders may have technical and economic problems such as limited sources, toxicity, high cost, or unstable effects.

Method used

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  • Sulphoaluminate cement material with retarding effect

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A sulphoaluminate cement material with retarding effect, the material is composed of the following components in parts by weight: 100 parts of sulphoaluminate cement, 7 parts of sodium chloride, 1.5 parts of montmorillonite, 5 parts of silica fume share.

[0025] Sulphoaluminate cement, sodium chloride, montmorillonite and silica fume are respectively weighed according to the above dosage ratio, and mixed evenly to obtain a sulphoaluminate cement material with retarding effect.

Embodiment 2

[0027] A sulphoaluminate cement material with retarding effect, the material is composed of the following components in parts by weight: 100 parts of sulphoaluminate cement, 4 parts of sodium chloride, 1 part of montmorillonite, 5 parts of silica fume share.

[0028] Sulphoaluminate cement, sodium chloride, montmorillonite and silica fume are respectively weighed according to the above dosage ratio, and mixed evenly to obtain a sulphoaluminate cement material with retarding effect.

Embodiment 3

[0030] A sulphoaluminate cement material with retarding effect, the material is composed of the following components in parts by weight: 100 parts of sulphoaluminate cement, 12 parts of sodium chloride, 2 parts of montmorillonite, 10 parts of silica fume share.

[0031] Sulphoaluminate cement, sodium chloride, montmorillonite and silica fume are respectively weighed according to the above dosage ratio, and mixed evenly to obtain a sulphoaluminate cement material with retarding effect.

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Abstract

The invention relates to a sulphoaluminate cement material with a retarding effect, and belongs to the technical field of cement materials. The sulphoaluminate cement material with the retarding effect belongs to a hydraulic cementing material taking an inorganic compound as a main body, and is a composite cementing material formed by selecting proper external additives (sodium chloride, montmorillonite and silica fume) on the basis of specific cement (sulphoaluminate cement). A plain concrete structure or a reinforced concrete structure can be repaired and reinforced after mechanical stirring and mixing, and a concrete structure without structural steel bars can also be formed through pouring. In the on-site construction process of the sulphoaluminate cement material, under the condition that the water-binder ratio is lower than 0.28, the stirring process of firstly adding water dissolved with sodium chloride, then mixing with cementing materials such as cement and the like, and finally mixing with sand is adopted in the stirring process of the mortar material composed of the sulphoaluminate cement material.

Description

technical field [0001] The invention belongs to the technical field of cement materials, and relates to a sulphoaluminate cement material with retarding effect. Background technique [0002] In the 1970s, ordinary sulphoaluminate cement was independently developed by the my country Academy of Building Materials Science. It is made of limestone, bauxite and gypsum with appropriate components and calcined at low temperature (1300-1350°C). made of anhydrous calcium sulfoaluminate (C 4 A 3 S) and dicalcium silicate (C 2 S) is clinker mainly composed of minerals, which is a hydraulic gelling material obtained by grinding together with an appropriate amount of mixed materials. [0003] In recent years, since the demand for limestone in the production process of sulphoaluminate cement is significantly lower than that of ordinary Portland cement, and the firing temperature is relatively low, the production process of sulphoaluminate cement can reduce the consumption of coal resour...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B14/10C04B18/14C04B22/12C04B103/22
CPCY02W30/91
Inventor 黄煜镔侯铁军陈明伟张沛
Owner 青海交通职业技术学院
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