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Sulfur fixation ash-fly ash compounded environment-friendly void grouting material as well as preparation method and application thereof

A technology of sulfur-fixing ash and grouting material, which is used in bridge reinforcement, erection/assembly of bridges, bridges, etc., to achieve the effects of excellent shrinkage resistance, improved cost performance and low price.

Active Publication Date: 2019-11-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of performance, the hollow grouting material prepared by the present invention can effectively solve the engineering problems caused by road hollowing, and has high early strength, adjustable and controllable strength; in terms of material source, the hollow grouting material of the present invention consists of Composed of sulfur-fixing ash, fly ash, curing agent and a series of additives, it makes full use of industrial solid waste such as sulfur-fixing ash and fly ash, and is the same as the cement-based grouting materials commonly used in the market at present (the cost is about 300-400 Yuan / m 3 ), the present invention makes full use of the certain pozzolanic activity of sulfur-fixing ash, and in conjunction with the use of an expansion agent, the grouting material can expand slightly in volume during mixing and use, and there is no drying shrinkage after curing, which is different from existing grouting materials on the market. Compared with some cement-based grouting materials, it has excellent shrinkage resistance

Method used

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  • Sulfur fixation ash-fly ash compounded environment-friendly void grouting material as well as preparation method and application thereof
  • Sulfur fixation ash-fly ash compounded environment-friendly void grouting material as well as preparation method and application thereof
  • Sulfur fixation ash-fly ash compounded environment-friendly void grouting material as well as preparation method and application thereof

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preparation example Construction

[0045] In yet another specific embodiment of the present invention, a method for preparing an environment-friendly hollow grouting material compounded with sulfur-fixed ash-fly ash is provided, and the steps are as follows:

[0046] (1) Take the sulfur-fixing ash and fly ash according to the amount, wherein the sulfur-fixing ash and fly ash are sieved; the sulfur-fixing slag is crushed, ground, and sieved; Coal ash and crushed sulfur-fixing slag are heated for anaerobic high-temperature activation; then cooled to room temperature and mixed evenly to obtain component A.

[0047] (2) Weigh the early strength agent, water reducer, defoamer, expansion agent and water according to the amount, and stir them evenly to prepare component B of the auxiliary agent.

[0048] (3) Weigh water glass, slaked lime, caustic soda, ordinary Portland cement and plaster of paris, and mechanically stir them evenly to prepare component C of the curing agent.

[0049] (4) During construction, after m...

Embodiment 1

[0058] A preparation method of a sulfur-fixed ash-fly ash composite environment-friendly hollow-out grouting material is as follows:

[0059] (1) Weigh 30g of sulfur-fixed ash and 40g of fly ash, and sieve them through 1mm respectively, and keep the sieved samples. Weigh 40g of sulfur-fixing slag, preliminarily crush the sulfur-fixing slag, and then use a ball mill to grind for 40 minutes, use a 2mm sieve to sieve, and take a specific surface area of ​​260-480m 2 / kg of sulfur-fixing slag powder.

[0060] (2) The above samples were heated in an oxygen-free high-temperature furnace at 500° C. for 3 hours to perform high-temperature activation. Then cool to room temperature, stir and mix evenly to obtain component A.

[0061] (3) Weigh 1g of early strength agent calcium chloride, 2.5g of polycyclic aromatic salt of water reducer, 1.0g of defoamer polyether, 0.02g of expansion agent, aluminum powder and 25g of water, mechanically stir evenly, and prepare Auxiliary component B ...

Embodiment 2

[0067] A preparation method of a sulfur-fixed ash-fly ash composite environment-friendly hollow-out grouting material is as follows:

[0068] (1) Weigh 60g of sulfur-fixed ash and 30g of fly ash, sieve them through 1mm respectively, and keep the sieved samples. Weigh 60g of the sulfur-fixing slag, preliminarily crush the sulfur-fixing slag, and then use a ball mill to grind it for 40 minutes, and use a 2mm sieve to sieve it to obtain a specific surface area of ​​260-480m 2 / kg of sulfur-fixing slag powder.

[0069] (2) The above samples were heated in an oxygen-free high-temperature furnace at 500° C. for 3 hours to perform high-temperature activation. Then cool to room temperature, stir and mix evenly to obtain component A.

[0070] (3) Weigh 2g of early strength agent sodium chloride, 2g of water reducing agent polycarboxylic acid, 3.0g of defoaming agent organosilicon, 0.01g of expansion agent calcium sulfoaluminate and 40g of water, stir mechanically to obtain Auxiliary...

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Abstract

The invention provides a sulfur fixation ash-fly ash compounded environment-friendly void grouting material as well as a preparation method and application thereof. The void grouting material is prepared from sulfur fixation ash, fly ash, a curing agent, an early strength agent, a water reducing agent, a defoaming agent, an expanding agent and water. In terms of performance, the strength of the grouting material can be adjusted and controlled by adjusting the proportion of the sulfur fixation ash, the fly ash and the curing agent in the formula; through the contents of the auxiliary agent andthe curing agent, the characteristics of high early strength and short curing time can be realized. Meanwhile, industrial solid wastes such as the sulfur fixation ash and the fly ash are adopted, so that the development requirement of China on environmental protection is met. Compared with a common cement-based grouting material on the market at present, the grouting material disclosed by the invention has the advantages of no air shrinkage phenomenon after being cured, capacity of keeping volume micro-expansion and excellent air shrinkage resistance. The cost of the disclosed grouting material is less than 180 yuan / m<3>, the cost performance is greatly improved, and the disclosed grouting material has great economic and social benefits.

Description

technical field [0001] The invention belongs to the field of materials for road engineering, bridge engineering and tunnel engineering, and in particular relates to a sulfur-fixing ash-fly ash composite environment-friendly hollow-out grouting material and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Different degrees of damage will appear on the road under the long-term action of traffic load and environmental factors. For the subgrade, it mainly includes deformation and sinking, hollowing out, mud turning, etc.; for the road surface, there are cracks, potholes, uneven road surface, etc. The occurrence of road diseases, on the ...

Claims

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Application Information

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IPC IPC(8): C04B28/26E01D22/00C04B111/72
CPCC04B28/26C04B2111/72C04B2201/05E01D22/00C04B2/02C04B22/062C04B7/02C04B11/00C04B18/064C04B18/08C04B22/124C04B24/32C04B22/04C04B2103/302C04B24/42C04B22/142C04B22/12C04B24/18C04B24/026
Inventor 梁明姚占勇蒋红光张吉哲陈小宝
Owner SHANDONG UNIV
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