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A cementitious material and its preparation method, concrete road and its laying method

A technology of cementitious materials and raw materials, which is applied in the field of cement preparation, can solve the problems of insufficient cement setting time, etc., and achieve the effects of long setting time, convenient construction and good quality.

Active Publication Date: 2020-09-11
山东永正水泥有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a cementitious material and a preparation method thereof, aiming at improving the problem that the existing cement setting time is not long enough

Method used

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  • A cementitious material and its preparation method, concrete road and its laying method

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preparation example Construction

[0023] The preparation method of composite gypsum ball is:

[0024] Mix and stir the sodium sulfate, calcium formate, fly ash and desulfurized gypsum that meet the content ratio in the composite gypsum balls to obtain a mixture, and compact the mixture with a compactor. The compacting machine is used to pre-exhaust and encrypt the loose materials that are not easy to form, so that the materials enter the forming machine and form a good structure. The series of compacting machines include two-roller encryption type and four-roller double-type encryption type. The machine is reasonably assembled and compact in structure. Smooth operation and reliable performance. The mixture is pressurized and compacted to increase the compactness of the gypsum and facilitate molding. Then use the desulfurization gypsum briquetting machine to press the compacted mixture into balls. The sulfur gypsum briquetting machine can press the compacted mixture into balls at one time without adding any bi...

Embodiment 1

[0035] A cementitious material, the preparation raw materials include, in parts by weight, 45 parts of Portland cement clinker, 27 parts of fly ash, and 6.8 parts of composite gypsum balls. The composite gypsum balls are composed of 0.8% of sodium sulfate, 0.1% of calcium formate, 2% of fly ash and the balance of desulfurized gypsum in terms of mass percentage.

[0036] A preparation method of cementitious material, taking 450kg of the above Portland cement clinker, 270kg of fly ash, and 68kg of composite gypsum balls, and grinding them in a cement mill to obtain a specific surface area of ​​340-400m 2 / kg of powder is the gelling material.

Embodiment 2

[0038]The invention relates to a cementitious material, the raw materials of which are prepared by parts by weight: 80 parts of Portland cement clinker, 5 parts of fly ash, and 1.8 parts of composite gypsum balls. The composite gypsum balls are composed of 1.2% sodium sulfate, 0.3% calcium formate, 1.5% fly ash and the balance desulfurized gypsum in terms of mass percentage.

[0039] A preparation method of cementitious material, taking 800kg of the above Portland cement clinker, 50kg of fly ash, and 18kg of composite gypsum balls, and grinding them in a cement mill to obtain a specific surface area of ​​340-400m 2 / kg of powder is the gelling material.

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Abstract

The invention relates to the technical field of cement preparation, and provides a cementing material. Raw materials of the cementing material include, by weight, 45-80 parts of Portland cement clinker, 5-27 parts of fly ash and 1.8-6.8 parts of composite gypsum balls, and the composite gypsum balls include anhydrous sodium sulfate, calcium formate, fly ash, and the balance of desulfurized gypsum.The invention also provides two preparation method of the cementing material. One of the two preparation methods comprises the following steps: mixing the Portland cement clinker, fly ash and composite gypsum balls, and grinding the obtained mixture; and the remaining preparation method comprises is characterized in that powdery Portland cement clinker, fly ash and composite gypsum balls are mixed. The cementing material prepared by the preparation methods have a long setting time. The present invention also provides a paving method of a concrete road. The paving method is characterized in that the cementing material provided by the invention is used to pave the road. The present invention further provides the concrete road paved by using the paving method. The concrete road has a good quality.

Description

technical field [0001] The invention relates to the technical field of cement preparation, in particular to a cementitious material and a preparation method thereof, a concrete road and a laying method thereof. Background technique [0002] Cementitious material refers to the material that can change from slurry to solid stone-like body under physical and chemical action, and can cement other materials to form a composite solid with certain mechanical strength. Among civil engineering materials, any material that can bond granular or massive materials into a whole through a series of physical and chemical changes is collectively referred to as cementitious materials. [0003] At present, with the rapid development of high-grade highway traffic modernization, the development of concrete roads has been placed in an important position in road construction. Due to the long time required for road construction, mixing, paving, and compacting, it must be completed before the cement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26E01C19/20E01C7/14
CPCY02P40/10
Inventor 窦霆张青青
Owner 山东永正水泥有限公司