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A kind of acid-resistant cement and preparation method thereof

An acid-resistant and cement technology, which is applied in the field of acid-resistant cement and its preparation, can solve the problems of not meeting the requirements and the corrosion resistance of sewage is not strong enough, so as to alleviate the corrosion of buildings, be beneficial to energy conservation and environmental protection, and improve the economic benefits of enterprises.

Active Publication Date: 2017-10-27
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The cement of this patent has certain corrosion resistance and impermeability for general underground water, but its anti-sewage corrosion ability is not strong enough to meet the requirements of urban sewage for drainage pipes

Method used

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  • A kind of acid-resistant cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An acid-resistant cement comprises the following raw materials in parts by weight: 10 parts of cement clinker, 40 parts of slag, 30 parts of fired kaolin, 5 parts of gypsum, 5 parts of slaked lime, and 4 parts of alkali activator.

[0026] After fully mixing the raw materials weighed according to the above weight parts, they are ground, and the particle size of the ground powder is 80 μm. 0.4, after mixing and stirring, a 40 mm * 40 mm * 160 mm mortar specimen was made, and the retrieved data are shown in Table 1.

Embodiment 2

[0028] An acid-resistant cement comprises the following raw materials in parts by weight: 20 parts of cement clinker, 40 parts of slag, 30 parts of fired kaolin, 5 parts of gypsum, 4 parts of slaked lime, and 3 parts of alkali activator.

[0029] In this embodiment, the cement clinker is PO42.5; the specific surface area of ​​titanium slag is >400m 2 / kg; kaolin is white, and powders with a fineness of less than 2 μm account for more than 90% of the kaolin.

[0030] After fully mixing the raw materials weighed according to the above weight parts, they are ground, and the particle size of the ground powder is 80 μm. 0.4, after mixing and stirring, a 40 mm * 40 mm * 160 mm mortar specimen was made, and the retrieved data are shown in Table 1.

Embodiment 3

[0032] An acid-resistant cement comprises the following raw materials in parts by weight: 25 parts of cement clinker, 35 parts of slag, 30 parts of calcined kaolin, 3 parts of anhydrite, 3 parts of slaked lime, and 3 parts of alkali activator.

[0033] In this embodiment, the cement clinker is PO52.5; the specific surface area of ​​titanium slag is >400m 2 / kg; kaolin is white, and powders with a fineness of <2 μm account for more than 90% of kaolin; kaolin is calcined kaolin obtained after calcination at 800°C for 2 hours.

[0034] After fully mixing the raw materials weighed according to the above weight parts, they are ground, and the particle size of the ground powder is 80 μm. 0.4, after mixing and stirring, a 40 mm * 40 mm * 160 mm mortar specimen was made, and the retrieved data are shown in Table 1.

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Abstract

The invention discloses an acid-resistant cement, and belongs to the technical field of construction materials. The cement comprises the following raw materials in parts by weight: 10 to 40 parts of cement clinker, 20 to 40 parts of titanium slag, 5 to 30 parts of kaolin, 2 to 5 parts of gypsum, 2 to 8 parts of slaked lime, and 2 to 4 parts of alkaline excitant. The provided cement has the advantages of good performance on resisting acid corrosion, low preparation cost, and environment-friendliness.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to an acid-resistant cement and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and urbanization, the discharge of urban sewage has risen sharply, accounting for more than 50% of wastewater, and the discharge has reached 30 billion tons. The environmental corrosion of cement product structures is also becoming more and more harmful. All countries have invested a lot of financial and material resources in repair and protection. Therefore, the corrosion of drainage pipes by urban sewage has become a more prominent problem in municipal engineering. [0003] In order to solve the problem of anti-corrosion of cement products and structures, scholars at home and abroad have conducted a lot of research on the corrosion of steel bars, carbonic acid, and sulfate. It is agreed that the cement product structure is obta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/21
CPCY02P40/10
Inventor 莫志胜阳运霞陈雪梅喻庆华
Owner JIAHUA SPECIAL CEMENT
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