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White sulphoaluminate cement and production method thereof

A technology of sulphoaluminate cement and its production method, which is applied in the field of cement and can solve problems such as not being easy to achieve

Inactive Publication Date: 2019-03-08
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in actual production, the whiteness of sulphoaluminate clinker is more than 80, which is not easy to achieve.

Method used

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  • White sulphoaluminate cement and production method thereof
  • White sulphoaluminate cement and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] This embodiment provides a kind of white sulphoaluminate cement, comprises the following components by mass:

[0069] Aluminate clinker: 10%;

[0070] Sulphoaluminate clinker: 40%;

[0071] Gypsum: 15%;

[0072] Limestone: 30%;

[0073] Dolomite: 3%;

[0074] Slag: 2%;

[0075] The whiteness of the aluminate clinker is 91; the whiteness of the sulfoaluminate clinker is 82.

Embodiment 2

[0077] This embodiment provides a kind of white sulphoaluminate cement, comprises the following components by mass:

[0078] Aluminate clinker: 40%;

[0079] Sulphoaluminate clinker: 15%;

[0080] Gypsum: 25%;

[0081] Limestone: 15%;

[0082] Dolomite: 2%;

[0083] Slag: 3%;

[0084] The whiteness of the aluminate clinker is 92; the whiteness of the sulfoaluminate clinker is 87.

Embodiment 3

[0086] This embodiment provides a kind of white sulphoaluminate cement, comprises the following components by mass:

[0087] Aluminate clinker: 55%;

[0088] Sulphoaluminate clinker: 5%;

[0089] Gypsum: 20%;

[0090] Limestone: 15%;

[0091] Dolomite: 1%;

[0092] Slag: 4%;

[0093] The whiteness of the aluminate clinker is 93; the whiteness of the sulfoaluminate clinker is 84.

[0094] Compared with the prior art, the present application replaces the Portland cement clinker in the background technology by aluminate clinker, and can replace the sulfur-aluminum clinker in a larger amount. And this application no longer uses setting retarder, on the contrary, in order to adjust the setting time during actual construction, setting accelerator can be added as appropriate according to needs. Simultaneously the present application has added limestone.

[0095] As shown in Table 1:

[0096] Numbers 1 to 9 in Table 1 represent different white sulphoaluminate cement formulatio...

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Abstract

The invention discloses white sulphoaluminate cement and a production method thereof and belongs to the technical field of cement. White portland cement in the prior art has low early strength and relatively long de-molding time, and efflorescence of a product is easy to occur, so that the color is not saturated or full; the early strength of the white sulphoaluminate cement in the market meets the requirements and the product also has a non-efflorescence phenomenon; however, the whiteness is relatively low and the production requirements of decoration cannot be met very well. The invention provides the white sulphoaluminate cement and the production method thereof; the method comprises the following step of jointly pulverizing aluminate clinker with relatively high whiteness, sulphoaluminate clinker with relatively high whiteness, blending materials including white gypsum, dolomite, limestone, mineral slag and the like to prepare the cement. The white sulphoaluminate cement obtained by the production method has high early strength and the whiteness reaches 87 or above; the production requirements of the decoration products are met relatively well.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to a white sulphoaluminate cement and a production method thereof. Background technique [0002] White cement is a special cement mainly used for architectural decoration. It is also commonly used in the preparation of white or colored concrete products such as terrazzo and fake stone. It is the decorative cement with the largest production scale and has high economic value. [0003] White Portland cement is currently the most used white cement. Generally, the whiteness is above 80. The 28-day compressive strength can reach the Portland cement 42.5 strength grade standard, but its early strength is not high, and the 3-day compressive strength is only About 20MPa. This makes the demoulding time of white Portland cement products greatly prolonged, and the alkalinity of white Portland cement is relatively high, and it is easy to efflorescence, which greatly affects the work efficiency ...

Claims

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Application Information

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IPC IPC(8): C04B7/32C04B7/14C04B7/44C04B7/52
CPCC04B7/14C04B7/32C04B7/44C04B7/52Y02P40/10
Inventor 喻庆华
Owner JIAHUA SPECIAL CEMENT
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