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Red mud based rapid-setting grouting material applicable to grouting reinforcement treatment of sandy soil stratum

A grouting material and grouting reinforcement technology, which is applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of not meeting the requirements of green ecology, the high price of ultra-fine cement, and the high energy consumption of the cement industry, achieving high additional The effect of value resource utilization, saving preparation process and cost, and solving engineering problems

Active Publication Date: 2018-08-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, ultra-fine cement is the main grouting material for sandy soil formation, but the cement industry consumes a lot of energy, and ultra-fine cement is expensive, resulting in high engineering costs, which do not meet the requirements of green ecology

Method used

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  • Red mud based rapid-setting grouting material applicable to grouting reinforcement treatment of sandy soil stratum
  • Red mud based rapid-setting grouting material applicable to grouting reinforcement treatment of sandy soil stratum
  • Red mud based rapid-setting grouting material applicable to grouting reinforcement treatment of sandy soil stratum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Components and mass ratio: 65 parts of red mud, 28 parts of activator, and 7 parts of admixture. The activator consists of 26 parts by mass of 8M sodium hydroxide aqueous solution, 12 parts by mass of water glass and 62 parts by mass of sulphoaluminate cement clinker. The admixture is composed of 25 parts by mass of carboxylic acid water reducer, 25 parts by mass of talcum powder, 15 parts by mass of hydroxypropyl methylcellulose and 35 parts by mass of desulfurized gypsum powder.

[0028] 2. Preparation method: grind until the specific surface area is 550-600m 2 / Kg of red mud powder with a specific surface area of ​​350-400m 2 / Kg of sulphoaluminate cement clinker and water are mixed at a water-cement ratio of 1:1, stirred evenly, and then other components in corresponding proportions are added to it, and stirred for five minutes. The relevant properties of the prepared grouting materials are shown in Table 1:

[0029] Table 1

[0030]

[0031] This product ...

Embodiment 2

[0033] 1. Components and mass ratio: 70 parts of red mud, 25 parts of activator, and 5 parts of admixture. The activator consists of 27 parts by mass of 8M aqueous sodium hydroxide solution, 9 parts by mass of water glass and 64 parts by mass of sulphoaluminate cement clinker. The admixture consists of 23 parts by mass of carboxylic acid water reducer, 20 parts by mass of talcum powder, 15 parts by mass of hydroxypropyl methylcellulose and 42 parts by mass of desulfurized gypsum powder.

[0034] 2. Preparation method: grind until the specific surface area is 550-600m 2 / Kg of red mud powder with a specific surface area of ​​350-400m 2 / Kg of sulphoaluminate cement clinker and water are mixed at a water-cement ratio of 1:1, stirred evenly, and then other components in corresponding proportions are added to it, and stirred for five minutes. The relevant properties of the prepared grouting materials are shown in Table 2:

[0035] Table 2

[0036]

[0037]

[0038] This ...

Embodiment 3

[0040] 1. Components and mass ratio: 80 parts of red mud, 30 parts of activator, and 8 parts of admixture. The activator consists of 30 parts by mass of 8M sodium hydroxide aqueous solution, 15 parts by mass of water glass and 70 parts by mass of sulphoaluminate cement clinker. The admixture is composed of 30 parts by mass of carboxylic acid water reducing agent, 25 parts by mass of talcum powder, 15 parts by mass of hydroxypropyl methylcellulose and 45 parts by mass of desulfurized gypsum powder.

[0041] 2. Preparation method: grind until the specific surface area is 550-600m 2 / Kg of red mud powder with a specific surface area of ​​350-400m 2 / Kg of sulphoaluminate cement clinker and water are mixed at a water-cement ratio of 1.2:1, stirred evenly, and then other components in corresponding proportions are added to it, and stirred for five minutes. The relevant properties of the prepared grouting materials are shown in Table 3:

[0042] table 3

[0043]

[0044] This...

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Abstract

The invention discloses a red mud based rapid-setting grouting material applicable to grouting reinforcement treatment of a sandy soil stratum. The red mud based rapid-setting grouting material is prepared from components in parts by weight as follows: 60-80 parts of red mud, 20-30 parts of an exciting agent and 5-10 parts of an admixture, wherein the exciting agent is prepared from a sodium hydroxide water solution, sodium silicate and sulphoaluminate cement clinker; the admixture is prepared from a carboxylic acid water reducer, talc powder, hydroxypropyl methyl cellulose and desulfurized gypsum powder. The red mud as a mineral material is supplemented by the exciting agent, the additive and other ingredients for preparation of the grouting material, and the grouting material can be applied to the field of grouting reinforcement of the sandy soil stratum. The gelatinization material is prepared by use of characteristics of high alkalinity and fine particle size of the red mud, and the gelatinization activity of the red mud is improved by use of sulphoaluminate cement clinker and the alkaline exciting agent. The working performance of the red mud based grouting material is adjusted by the additive, so that the red mud based grouting material with excellent engineering performance is prepared.

Description

technical field [0001] The invention relates to a red mud-based quick-setting grouting material suitable for grouting reinforcement treatment of sandy soil strata and a preparation method thereof, belonging to the technical fields of waste comprehensive utilization and building material preparation. Background technique [0002] Red mud is the waste residue discharged when the aluminum industry extracts alumina. Generally, for every ton of alumina produced, 1.0-2.0 tons of red mud is incidentally produced. According to estimates, my country produces nearly 30 million tons of red mud every year. The stockpiling of red mud occupies a large amount of land and causes serious pollution to groundwater and soil. Therefore, it is imminent to realize multi-channel and large-scale resource utilization of red mud. [0003] As a typical weak stratum, the sandy soil stratum has the characteristics of loose structure, weak cohesion, poor self-stabilization ability, and easy liquefaction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00E02D3/12
CPCC04B28/006C04B2111/00017C04B2111/70E02D3/12C04B22/062C04B22/00C04B22/142C04B2103/302C04B14/042C04B24/383C04B22/145
Inventor 张庆松李召峰李术才张健齐延海杨磊张霄刘人太李恒天都君琪
Owner SHANDONG UNIV
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