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Red mud-based high-performance building repairing material as well as preparation method and application thereof

A repair material and high-performance technology, applied in the field of red mud-based high-performance building repair materials and their preparation, can solve the problems of large heat release, short setting time of magnesium phosphate cement, high cost, etc. Tone, color adjustable effect

Pending Publication Date: 2019-08-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disclosure solves the problems of short setting time, large heat release and high cost of magnesium phosphate cement, and improves its operability and engineering applicability

Method used

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  • Red mud-based high-performance building repairing material as well as preparation method and application thereof
  • Red mud-based high-performance building repairing material as well as preparation method and application thereof
  • Red mud-based high-performance building repairing material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Dry the red mud, dead-burned magnesia, potassium dihydrogen phosphate, and borax until the water content is less than 1%, grind them, and pass through a 100-mesh sieve;

[0043] (2) Weigh 60 parts of red mud, 30 parts of magnesium phosphate cement reburned magnesium oxide, 30 parts of potassium dihydrogen phosphate, 6 parts of borax; 4 parts of rose red color changing agent, add water until the water-cement ratio is 0.4, stir for 30 seconds and pour Mold, test strength, setting time and other parameters.

[0044] The test strength adopts the test method of cement mortar strength in GBT 17671-1999, and the performance indicators in Table 1 are obtained according to the test method:

[0045] Table 1 performance test results

[0046]

Embodiment 2

[0048] (1) Dry the red mud, dead-burned magnesia, potassium dihydrogen phosphate, and borax until the water content is less than 1%, grind them, and pass through a 100-mesh sieve;

[0049] (2) Weigh 40 parts of red mud, 50 parts of magnesium phosphate cement reburned magnesium oxide, 30 parts of potassium dihydrogen phosphate, 10 parts of borax; 1 part of Prussian blue color-changing agent, add water until the water-cement ratio is 0.4, stir for 30 seconds and pour Mold, test strength, setting time and other parameters.

[0050] The test strength adopts the GBT 17671-1999 cement mortar strength test method to obtain the following performance indicators:

[0051] Table 2 performance test results

[0052]

Embodiment 3

[0054] (1) Dry the red mud, dead-burned magnesia, potassium dihydrogen phosphate, and borax until the water content is less than 1%, grind them, and pass through a 100-mesh sieve;

[0055](2) Weigh 50 parts of red mud, 40 parts of magnesium phosphate cement dead-burned magnesia, 20 parts of potassium dihydrogen phosphate, 10 parts of borax; 1 part of color-changing agent, add water until the water-cement ratio is 0.8, stir for 30 seconds and pour the test mold, Test strength, setting time and other parameters. The material can be applied to underground engineering disaster control.

[0056] The test strength adopts the GBT 17671-1999 cement mortar strength test method to obtain the following performance indicators:

[0057] Table 3 performance test results

[0058]

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Abstract

The invention relates to a red mud-based high-performance building repairing material as well as a preparation method and application thereof. The repairing material is composed of the following components: 10-90 parts of a high alkaline earth metal type solid waste raw material, 20-60 parts of magnesium phosphate cement, 2-8 parts of a retarder and 1-5 parts of a color changing agent, wherein thehigh alkaline earth metal type solid waste raw material is one selected from the group consisting of red mud, calcium carbide slag, coal gangue, mineral powder, aluminum ash, steel slag and copper slag; and the magnesium phosphate cement is composed of dead-burnt magnesium oxide and a phosphate, and a mass ratio of the dead-burnt magnesium oxide to the phosphate is (1-9):1. The repairing materialprovided by the invention can improve mechanical strength of the magnesium phosphate cement, delay setting time, reduce hydration heat release, and make the magnesium phosphate cement have wider engineering applicability.

Description

technical field [0001] The disclosure belongs to the technical field of preparation of building repair materials, and in particular relates to a red mud-based high-performance building repair 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] Civil engineering is the material basis for people's survival. However, the structural failure or building function failure caused by various reasons in today's world not only affects people's normal life but also causes huge economic losses. Statistics show that more than 40% of the total construction investment in industrially developed countries is used for building maintenance and...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B111/72C04B111/82
CPCC04B28/34C04B2111/00724C04B2111/0075C04B2111/72C04B2111/82C04B2201/50C04B18/0409C04B14/304C04B22/0013C04B2103/54C04B22/10
Inventor 李召峰李术才张健高益凡刘超
Owner SHANDONG UNIV
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