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Cement material fly-ash activity excitant

An active activator, fly ash technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc. Restriction and other issues to achieve the effects of inhibiting alkali-aggregate reaction, enhancing seawater erosion ability, and improving workability

Inactive Publication Date: 2004-12-29
王杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fly ash activators, such as the activator developed by Shanghai Research Institute of Chemical Industry, the HB activator developed by Anhui University, and the LZ activator developed by Nanchang University, have an unsatisfactory activation effect. not ideal
Chinese patent number: 01112590 discloses an invention patent named "fly ash activator", which is made by mixing calcium oxide, sodium metasilicate, sodium fluorosilicate and sodium tripolyphosphate in a certain proportion , the cost is higher and the process is more complicated
However, due to the influence of the poor activity of fly ash itself, the application of fly ash is subject to many restrictions.

Method used

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  • Cement material fly-ash activity excitant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Get iron powder 20%, calcium oxide 40%, thickening aid 5‰, fly ash 40%, above-mentioned share is weight ratio, and wherein thickening aid is general commercially available chemicals, and general chemical shop all has sale, Calcium oxide is a mineral raw material obtained after grinding. Dry the iron powder naturally, sieve it, weigh it according to the above weight ratio, grind the calcium oxide and weigh it according to the above weight ratio, and weigh the thickening aid and fly ash according to the above weight ratio, and mix them That is the finished product.

Embodiment 2

[0009] Take 50% of iron powder, 40% of calcium oxide, 5% of thickening aid, 10% of fly ash, and the others are the same as in Example 1.

Embodiment 3

[0011] Get 40% of iron powder, 20% of calcium oxide, 40% of fly ash, 5‰ of thickener, and others are the same as in Example 1.

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PUM

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Abstract

The activity excitant for flyash as cementing material may be used to make the flyash adding amount as high as 70 % without affecting the early strength of cement and concrete. The activity excitant consists of iron powder in 20-50 wt%, calcium oxide in 20-40 wt%, densifying agent 0.05-0.5 wt% and flyash 10-40 wt%, and is added into cement and concrete in the amount of 1-3 % of cementing material. The production process includes air drying and sieving iron powder, milling calcium oxide to obtain calcium oxide powder, and mixing the said material in the said ratio.

Description

Technical field: [0001] The invention relates to the technical field of chemical industry, in particular it is a cementing material fly ash active stimulator. Background technique: [0002] In recent years, fly ash has been widely used in the construction industry to produce cement and aerated concrete blocks, which not only reduces the cost of building materials, but also provides a broad way for the utilization of fly ash discharged from thermal power plants. Because the coal ash discharged from thermal power plants across the country is more than 80 million tons per year, some of which are piled up in farmland and some are discharged into rivers, which has become a major public hazard. Using fly ash as the basic material of roads and buildings, Or as building materials, turning waste into treasure is a great contribution made by engineers. Chinese patent numbers: 86105445, 87100904, and 89107256 respectively disclose the titles "Using pulp mud and fly ash to produce Port...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/08C04B22/00C04B28/02
CPCC04B28/02Y02W30/91C04B18/088C04B22/04C04B22/064
Inventor 王杰
Owner 王杰
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