High-performance concrete composite admixture and preparation method thereof

A high-performance concrete and composite admixture technology, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of increasing the cost pressure of concrete mixing plants and the high cost of admixture raw materials, and achieve space The effect of low moisture demand, wide range of sources, and improved strength performance

Active Publication Date: 2016-02-03
山东中粉建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the raw material cost of the admixture is also very high, which increases the cost pressure of the concrete mixing plant

Method used

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  • High-performance concrete composite admixture and preparation method thereof
  • High-performance concrete composite admixture and preparation method thereof
  • High-performance concrete composite admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Activator

[0021] The activator used in the present invention, its preparation method comprises the following steps:

[0022] In the first step, add 5kg of amide mixture, 2kg of cellulose ether, 7kg of acrylic acid, 10kg of cyclic hydrocarbon mixture and 4kg of polymer dispersant into the reactor respectively, set the pressure at 4MPa, and the temperature at 50°C for the reaction, and simultaneously open A stirring device was used to stir for 2 hours to obtain a mixture;

[0023] In the second step, add 50kg of sodium hydroxide, 70kg of sodium metasilicate and 200kg of calcium sulfate into 200kg of water, and add the mixture obtained in the first step, mix and stir for 30 minutes, and then proceed at a temperature of 400°C Heating for 30 minutes, then cooling for 2 hours, the activator of powder particles is obtained.

[0024] Among them, the amide mixture consists of 1.875kg N-ethylacetamide, 0.625kg formamide and 2.5kg 2,4-dihydroxybenzamide.

[0025] Am...

Embodiment 2

[0028] Embodiment 2 composite admixture 1

[0029] The invention provides a high-performance composite concrete admixture, which is prepared from the following raw materials: 30kg of waste residue, 10kg of tailings, 1kg of desulfurized gypsum, 5kg of powder and 1kg of activator.

[0030] Among them, the waste residue is composed of 20kg fly ash and 10kg metallurgical waste residue, and the tailings are a mixture of 4kg high-alumina silicate tailings, 4kg magnesium-iron silicate tailings and 2kg alkaline silicate tailings.

[0031] Among them, the main components of the powder are 1kg crushed stone, 2kg muck and 2kg broken bricks.

[0032] Wherein, the activator used is the activator obtained in Example 1.

[0033] The preparation process is:

[0034] The first step is to feed the raw materials other than the activator into the ultra-fine vertical mill for grinding through the rotary feeder with frequency conversion, so that the particle size of each raw material can reach 8u...

Embodiment 3

[0036] Embodiment 3 composite admixture II

[0037] The invention provides a high-performance composite concrete admixture, which is prepared from the following raw materials: 60 kg of waste residue, 16 kg of tailings, 2 kg of desulfurized gypsum, 12 kg of powder and 5 kg of activator.

[0038] Among them, the waste residue is composed of 40kg fly ash and 20kg metallurgical waste residue; the tailings are 6.4kg high alumina silicate tailings, 6.4kg magnesium iron silicate tailings and 3.2kg alkaline silicate tailings mixture.

[0039] Among them, the main components of the powder are 2.67kg of gravel, 5.33kg of muck and 4kg of broken bricks.

[0040] Wherein, the activator used is the activator obtained in Example 1.

[0041] The preparation process is:

[0042] The first step is to feed the raw materials other than the activator into the ultra-fine vertical mill through the rotary feeder with frequency conversion, so that the particle size of each raw material can reach 12...

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Abstract

The invention discloses a high-performance concrete composite admixture and a preparation method thereof. The high-performance concrete composite admixture is prepared from the following raw materials in parts by mass: 30-60 parts of waste residues, 10-16 parts of tailings, 1-2 parts of desulfurization gypsum, 5-12 parts of powder and 1-5 parts of an activating agent. The invention also discloses the preparation method of the high-performance concrete composite admixture. The high-performance concrete composite admixture disclosed by the invention has the following beneficial effects: firstly, the raw materials of the admixture are taken from wastes to realize recycling utilization of solid wastes and solve land occupation and environmental pollution caused by stacking and burying; secondly, the admixture disclosed by the invention, by virtue of treatment and processing of the raw materials, has more excellent performance, so that the working performance and strength of each stage of concrete can be finally promoted significantly, and then the concrete becomes high-performance concrete with high durability, high applicability and high volume stability; and moreover, the admixture can greatly reduce the use level of cement and is very significant in cost reducing effect.

Description

technical field [0001] The invention relates to the technical field of industrial mining, in particular to a high-performance concrete composite admixture and a preparation method thereof. Background technique [0002] Concrete admixtures are used to improve concrete performance, save water, adjust the strength level of concrete, and add natural or artificial powdery minerals that can improve concrete performance during concrete mixing. In response to the development of the market, various admixtures have emerged as the times require. Due to the differences in the performance and composition of the admixtures, the performance of the admixtures is uneven, and the effects are not the same. Furthermore, the raw material cost of the admixture is also very high, which increases the cost pressure of the concrete mixing plant. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a high-performance concrete composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16C04B24/38C04B18/08C04B18/14C04B18/12
CPCY02W30/91
Inventor 孙泽斌孙建博曹剑吕世军王新刚闫灿刚
Owner 山东中粉建材科技有限公司
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