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Self-setting mortar and method for anti-seepage and strengthening of embankment

A mortar and self-congealing technology, which is applied in sea area engineering, construction, water conservancy engineering, etc., can solve problems such as difficult to meet engineering needs, low strength, low stone rate, etc., to shorten the consolidation period, improve the consolidation rate, and impermeability Good results

Active Publication Date: 2020-07-21
福建省岚禹建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Self-setting mortar is a kind of slurry with a high water-cement ratio, and the stone rate is low. To form a solid material for an impervious wall, it is necessary to continuously replenish the slurry to complete the water separation and consolidation. The cycle is long and it is difficult to meet the needs of the project.
In addition, the low-strength characteristics of the wall make the ability to withstand water pressure limited, and it is easy to form perforation damage, which greatly limits the application of self-setting mortar anti-seepage walls in permanent engineering

Method used

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  • Self-setting mortar and method for anti-seepage and strengthening of embankment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A self-setting mortar, consisting of the following components by weight:

[0054] 48 parts of bentonite, 30 parts of fly ash, 192 parts of cement, 1.5 parts of sodium hydroxide, 1 part of sodium metaaluminate, 1 part of sodium silicate, 0.6 parts of retarder, 3 parts of reinforcing agent, 960 parts of water;

[0055] in,

[0056] The reinforcing agent is lignocellulose and diatomaceous earth with a mass ratio of 5:1;

[0057] The retarder is cyclodextrin and calcium lignosulfonate with a mass ratio of 1:5.

[0058] The particle size of the fly ash is 80 μm; the particle size of the lignocellulose is 800 nm; the particle size of the diatomite is 50 μm;

[0059] The preparation method of above-mentioned self-setting mortar, specifically is:

[0060](1) Mix bentonite, fly ash, sodium hydroxide, sodium metaaluminate and water, mechanically stir for 2 hours, and leave standstill for 5 hours to obtain activated bentonite mud;

[0061] (2) adding sodium silicate, reinforci...

Embodiment 2

[0064] A self-setting mortar, consisting of the following components by weight:

[0065] 40 parts of bentonite, 20 parts of fly ash, 140 parts of cement, 0.9 parts of sodium hydroxide, 0.5 parts of sodium metaaluminate, 0.5 parts of sodium silicate, 0.4 parts of retarder, 1 part of reinforcing agent, 700 parts of water;

[0066] in,

[0067] The reinforcing agent is lignocellulose and diatomaceous earth with a mass ratio of 3:1;

[0068] The retarder is cyclodextrin and calcium lignosulfonate with a mass ratio of 1:7.

[0069] The particle size of the fly ash is 50 μm; the particle size of the lignocellulose is 500 nm; the particle size of the diatomite is 25 μm;

[0070] The preparation method of above-mentioned self-setting mortar, specifically is:

[0071] (1) Mix bentonite, fly ash, sodium hydroxide, sodium metaaluminate and water, mechanically stir for 1 hour, and let stand for 3 hours to obtain activated bentonite mud;

[0072] (2) adding sodium silicate, reinforcing...

Embodiment 3

[0075] A self-setting mortar, consisting of the following components by weight:

[0076] 42 parts of bentonite, 21 parts of fly ash, 165 parts of cement, 1 part of sodium hydroxide, 0.6 parts of sodium metaaluminate, 0.8 parts of sodium silicate, 0.5 parts of retarder, 2.5 parts of reinforcing agent, and 895 parts of water;

[0077] in,

[0078] The reinforcing agent is lignocellulose and diatomaceous earth with a mass ratio of 4:1;

[0079] The retarder is cyclodextrin and calcium lignosulfonate with a mass ratio of 1:6.

[0080] The particle size of the fly ash is 75 μm; the particle size of the lignocellulose is 600 nm; the particle size of the diatomite is 40 μm;

[0081] The preparation method is the same as in Example 2.

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Abstract

The invention discloses self-solidified mortar and a dam seepage-proof reinforcement method thereof. The self-solidified mortar consists of bentonite, coal ash, cement, sodium hydroxide, sodium metaaluminate, sodium silicate, a retarder, a reinforcing agent and water. The dam seepage-proof reinforcement method comprises the following steps: S1, preparing the self-solidified mortar, namely (1) mixing the bentonite, the coal ash, the sodium hydroxide, the sodium metaaluminate and the water, performing stirring, and performing standing so as to obtain activated bentonite slurry, (2) putting the sodium silicate and the reinforcing agent into the activated bentonite slurry obtained in the step (1), and performing stirring so as to obtain bentonite slurry, and (3) putting the cement and the retarder into the obtained bentonite slurry, and performing stirring so as to obtain the self-solidified mortar; and S2, performing groove hole excavation. Compared with the prior art, the solidificationrate of the self-solidified mortar can be increased, the self-solidified mortar is short in solidification cycle, good in seepage resistance and high in strength, and technical support is provided forapplication of a self-solidified mortar seepage-proof wall in permanent projects such as a dam.

Description

technical field [0001] The invention belongs to the technical field of embankment reinforcement, and in particular relates to a self-setting mortar and an anti-seepage reinforcement method thereof. Background technique [0002] As the core component of water conservancy projects, dams play an important role in the construction of water conservancy projects. However, during the operation of dams in water conservancy projects, large-scale leakage is particularly prone to occur. If reasonable reinforcement measures are not taken for reinforcement, it will Seriously affect the safety of water conservancy projects. Therefore, it is particularly critical to strengthen the anti-seepage and reinforcement construction of water conservancy project dams. [0003] Concrete anti-seepage reinforcement technology is currently widely used in the treatment of dam water seepage diseases. The use of concrete for reinforcement can improve the water permeability of the soil and achieve the effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26E02B3/16
CPCC04B28/26C04B2201/50E02B3/16C04B14/104C04B18/08C04B7/02C04B22/062C04B22/0093C04B24/18C04B24/383C04B22/06
Inventor 郑华肖中华江二女
Owner 福建省岚禹建设工程有限公司
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