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Low grade fly ash mixed slurry used for concrete and preparation method thereof

A mixed slurry, low-grade technology, applied in the direction of solid waste removal, etc., can solve the problems of high cost of modifier and equipment, unsuitable for large-scale production of concrete, complicated production process, etc., to promote secondary hydration The effect of reaction, low cost and simple production process

Inactive Publication Date: 2013-09-04
XIAMEN TIANRUN JINLONG BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the invention patents with publication numbers CN1884175 and CN101182167 incorporate more types of modifiers (reinforcing agents, surface modifiers and activators), the production process is complicated, the cost of modifiers and instruments is high, and it is not applicable Due to the large-scale production of concrete, it cannot be promoted; the invention patents with publication numbers CN101343156 and CN1636915 consume a lot of energy during the drying process and cannot be promoted

Method used

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  • Low grade fly ash mixed slurry used for concrete and preparation method thereof
  • Low grade fly ash mixed slurry used for concrete and preparation method thereof
  • Low grade fly ash mixed slurry used for concrete and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Step 1, raw material preparation: select low-grade fly ash, industrial waste residue, modifier and recycled water from the mixing station; according to the mass percentage of each component: low-grade fly ash solid content 52%, steel slag 10%, modified The agent is 2% gypsum, 1% triethanolamine and 35% recycled water from the mixing station. The recycled water from the mixing station contains the quality of water in low-grade fly ash.

[0036] The low-grade fly ash has a moisture content of 10%-25%, a sulfur trioxide content of ≤3%, a carbon content of ≤12%, and a sieve residue of 45 μm square hole ≤50%.

[0037] The industrial waste slag is steel slag or slag, with a sulfur trioxide content of ≤3%, a carbon content of ≤2%, and a sieve residue of 80 μm square hole sieves of ≤25%.

[0038] The mass percentages of the various components of the modifier are as follows: the reinforcement component accounts for 50%-80%, and the surface activation component accounts for 20%-5...

Embodiment 2

[0047]Step 1, raw material preparation: select low-grade fly ash, industrial waste residue, modifier and recycled water from the mixing station; the mass percentage of each component is: low-grade fly ash solid content 49%, slag 9%, modifier for Na 2 SO 4 2% and 1% of polycarboxylate polymer and 39% of the recycled water of the mixing station, the recycled water of the mixing station contains the quality of the water in the low-grade fly ash.

[0048] The low-grade fly ash has a moisture content of 10%-25%, a sulfur trioxide content of ≤3%, a carbon content of ≤12%, and a sieve residue of 45 μm square hole ≤50%.

[0049] The industrial waste slag is steel slag or slag, with a sulfur trioxide content of ≤3%, a carbon content of ≤2%, and a sieve residue of 80 μm square hole sieves of ≤25%.

[0050] The mass percentages of the various components of the modifier are as follows: the reinforcement component accounts for 50%-80%, and the surface activation component accounts for 20...

Embodiment 3

[0059] Step 1, raw material preparation: select low-grade fly ash, industrial waste residue, modifier and recycled water from the mixing station. The mass percentage of each component is: low-grade fly ash solid content 37%, slag 15%, Na 2 SiO 4 2% and 1% of triethanolamine, 45% of recycled water from the mixing station, and the recycled water from the mixing station contains the quality of low-grade fly ash reclaimed water.

[0060] The low-grade fly ash has a moisture content of 10%-25%, a sulfur trioxide content of ≤3%, a carbon content of ≤12%, and a sieve residue of 45 μm square hole ≤50%.

[0061] The industrial waste slag is steel slag or slag, with a sulfur trioxide content of ≤3%, a carbon content of ≤2%, and a sieve residue of 80 μm square hole sieves of ≤25%.

[0062] The mass percentages of the various components of the modifier are as follows: the reinforcement component accounts for 50%-80%, and the surface activation component accounts for 20%-50%.

[0063] T...

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Abstract

The invention discloses a low grade fly ash mixed slurry used for concrete. The mixed slurry is prepared by wet grinding the following components by mass percent: 35-55% of low grade fly ash, 9-16% of industrial residue, 1-4% of modifying agent and 35-45% of mixing plant recycled water; and the mixing plant recycled water contains the quality of the water in the low grade fly ash. The invention also discloses a preparation method of the low grade fly ash mixed slurry used for the concrete. The invention provides a low grade fly ash mixed slurry used for the concrete and a preparation method, wherein the mixed slurry is high in activity, low in cost and high in waste utilization rate.

Description

technical field [0001] The invention relates to a low-grade fly ash mixed slurry for concrete and a preparation method thereof. Background technique [0002] At present, the annual output of fly ash in my country is about 400 million tons, of which only about 20% meet the standards for concrete admixture Class I and Class II fly ash stipulated in GB1596-2005. It is generally believed that Class I and Class II fly ash has the characteristics of high chemical activity, good uniformity, and strong adaptability, and has high utilization value, while low-grade fly ash contains a large amount of water, which is difficult to handle, and has chemical activity. Relatively low, slow reaction, unstable properties, poor uniformity, it is difficult to use a large amount as a concrete admixture. [0003] The accumulation of low-grade fly ash in my country has reached more than 1.3 billion tons, covering an area of ​​more than 500,000 mu, which has brought great burden and harm to my coun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00B09B3/00
Inventor 龚明子曾冲盛徐仁崇黄洪财蔡振哲桂苗苗
Owner XIAMEN TIANRUN JINLONG BUILDING MATERIAL
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