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Method for preparing grouting material by using water-containing red mud and blast furnace slag

A technology of blast furnace slag and grouting materials, which is applied in the field of grouting materials prepared by using water-containing red mud and blast furnace slag, can solve the problems of high energy consumption, high cost, and large heat consumption, and achieve fast coagulation speed, high early strength, Practical effect

Active Publication Date: 2020-05-26
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents have made some progress in the application of red mud in the field of grouting materials, but the red mud is dried and used as raw materials to prepare grouting materials, and drying consumes a lot of heat, consumes a lot of energy, and costs high

Method used

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  • Method for preparing grouting material by using water-containing red mud and blast furnace slag
  • Method for preparing grouting material by using water-containing red mud and blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Get 8.3g of NaOH, water glass (its mode is 2.8, Baume degree is 35) 8.3g, portland cement clinker 8.3g and mix the three to prepare a composite alkaline activator;

[0033] 2) Take the specific surface area as 380m 2 / Kg~420m 2 / Kg blast furnace slag powder 125g, take polycarboxylate superplasticizer SP-409 10g, calcium chloride 5g;

[0034] 3) Take red mud soup (water content is 62%, specific surface area is 250m 2 / Kg, pH value is 11-13) 335g, pour blast furnace slag and alkaline activator into red mud soup, stir for ten minutes, and grouting operation can be carried out after stirring evenly.

[0035] 4) Strength test method: The laboratory is designed according to the water-cement ratio of 0.8:1, and the sample is poured using a 70.7×70.7×70.7mm test mold. The curing temperature is 20°C and the humidity is 90%.

[0036]

Embodiment 2

[0038] 1) Take NaOH 10g, water glass (its mode is 2.8, Baume degree is 35) 8.3g, portland cement clinker 6.6g and mix the three to prepare a composite alkaline activator;

[0039] 2) Take the specific surface area as 380m 2 / Kg~420m 2 / Kg blast furnace slag powder 100g, take polycarboxylate superplasticizer SP-409 10g, calcium chloride 5g;

[0040] 3) Take red mud soup (water content is 62%, specific surface area is 250m 2 / Kg, pH value is 11-13) 350g, pour blast furnace slag and alkaline activator into red mud soup, stir for five minutes, and grouting operation can be carried out after stirring evenly.

[0041] 4) Strength test method: The laboratory is designed according to the water-cement ratio of 0.8:1, and the sample is poured using a 70.7×70.7×70.7mm test mold. The curing temperature is 20°C and the humidity is 90%.

[0042]

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Abstract

The invention provides a novel red mud-based grouting material and preparation method thereof. The grouting material is prepared from the following components by weight percent: 70-80% of red mud liquid, 15-25% of blast furnace slag powder, 5-10% of compound alkali-activator, 2-10% of water reducing agent and 1-2% of early strength agent. The novel red mud-based grouting material prepared from redmud and the blast furnace slag powder is good in fluidity, high in early strength and short in time of coagulation, and does not shrink. The preparation method provided by the invention reasonably utilizes industrial waste, can reduce the influence of the waste on the environment, and is easy in preparation; the method is simple in steps, convenient to operate and high in practicability.

Description

technical field [0001] The present invention relates to a method for preparing grouting material with red mud soup as raw material and cooperating with blast furnace slag, especially a new type of red mud-based grouting material used for grouting reinforcement of tunnels, underground projects, roadbeds, etc. and its preparation method . Background technique [0002] Red mud is an industrial solid waste discharged from the aluminum industry after refining alumina from bauxite. Generally, for every ton of alumina produced, one ton of red mud is incidentally produced. According to incomplete statistics, the annual discharge of red mud in my country is as high as tens of millions of tons, and the cumulative storage of more than tens of millions of tons has been accumulated. The utilization rate of red mud is low, and a large amount of red mud cannot be fully and effectively utilized, and a large amount of red mud is accumulated on flat land and hillsides. , occupying a large am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B111/70
CPCC04B28/26C04B2111/70C04B2201/50C04B7/02C04B18/0409C04B18/142C04B2103/302C04B22/062C04B22/124
Inventor 李召峰都君琪李术才李海燕杨磊张健齐延海
Owner SHANDONG UNIV
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