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Undisturbed shield muck baking-free building material and preparation method thereof

A technology of building materials and shield slag, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of uneconomical, poor durability, high mud content, etc. Good strength, low permeability coefficient effect

Active Publication Date: 2020-07-10
CHINA CONSTR FIFTH ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If we can overcome the difficulties of high mud content and high water content in the undisturbed shield dregs, traditional solidification methods such as low strength, poor durability, severe efflorescence, inability to meet the requirements of building materials, and lack of economy, it will generate huge social, ecological and economic benefits

Method used

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  • Undisturbed shield muck baking-free building material and preparation method thereof
  • Undisturbed shield muck baking-free building material and preparation method thereof
  • Undisturbed shield muck baking-free building material and preparation method thereof

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preparation example Construction

[0042] This specific embodiment also proposes a method for preparing the above-mentioned undisturbed shield slag non-burning building material, including the following steps:

[0043] 1) A few coarse particles in the undisturbed shield muck are directly crushed by means of rollers, so that the content of coarse particles larger than 2mm does not exceed 5%, and the moisture content is tested;

[0044]2) Add water into the undisturbed shield dregs according to the ratio, and stir for 5-10 minutes to obtain the first slurry.

[0045] 3) Mix the granulated blast furnace slag, unslaked lime, sodium carbonate and water glass uniformly according to the proportion and then add them to the first slurry in step 2), and continue to stir for 5-10min to obtain the second slurry; further, if the water The glass is liquid water glass, and the granulated blast furnace slag, the quicklime, and the sodium carbonate are mixed and stirred evenly and added to the first slurry according to the prop...

Embodiment 1

[0050] The undisturbed shield slag non-burning building material is prepared by the following method:

[0051] Take 71.07 parts of the undisturbed shield muck, and directly crush a little coarse particles by means of double rollers, so that the content of coarse particles above 2 mm does not exceed 5%. Add 11.49 parts of water to 71.07 parts of undisturbed shield slag, and stir for 5 minutes to obtain the first slurry; at the same time, mix and stir 13.36 parts of granulated blast furnace slag with 1.59 parts of quicklime, 1.59 parts of sodium carbonate and 0.90 parts of sodium silicate powder Evenly, then add it to the original shield slag, and then stir for 10 minutes to obtain the second slurry, pour the second slurry into a mold with a height of 100mm and a diameter of 50mm, and then release the film after natural curing for 1 day, and continue to cover the film After 28 days of natural conservation, the undisturbed shield dregs and non-burning building materials can be ob...

Embodiment 2

[0054] The undisturbed shield slag non-burning building material is prepared by the following method:

[0055] Take 71.07 parts of the undisturbed shield muck, and directly crush a little coarse particles by means of double rollers, so that the content of coarse particles above 2 mm does not exceed 5%. Add 11.49 parts of water to 71.07 parts of undisturbed shield slag, and stir for 5 minutes to obtain the first slurry; at the same time, mix 13.36 parts of granulated blast furnace slag with 0.90 parts of sodium silicate powder and stir evenly, and then add it to the undisturbed shield In the dregs, continue to stir for 5 minutes, and finally add a mixture of 1.59 parts of quicklime and 1.59 parts of sodium carbonate, and stir for another 5 minutes to obtain the second slurry, which is poured into a mold with a height of 100 mm and a diameter of 50 mm. Mold, continue to cover the film and maintain it naturally for 28 days, and get the final undisturbed shield dregs and non-burni...

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Abstract

The invention relates to an undisturbed shield muck baking-free building material and a preparation method thereof. The undisturbed shield muck baking-free building material is prepared from the following raw materials in parts by weight: 1 to 100 parts of undisturbed shield muck, 1 to 60 parts of granulated blast-furnace slag, 1 to 10 parts of quick lime, 1 to 10 parts of sodium carbonate, 1 to 5parts of water glass and 1 to 20 parts of water. The undisturbed shield muck baking-free building material basically has no efflorescence phenomenon when encountering water, has better strength and durability, has a small drying shrinkage value, and is economical and environment-friendly. The invention further discloses the preparation method of the material.

Description

technical field [0001] The invention relates to the technical field of building materials and solid waste treatment, in particular to an undisturbed shield dregs burning-free building material and a preparation method thereof. Background technique [0002] First of all, for the disposal and resource utilization of shield muck, the first problem is dehydration. The traditional dehydration methods are nothing more than drying or drying, and the efficiency of the former is too low, and the latter is obviously not economically cost-effective and high. Compared with other types of earth pressure balance shield muck, the mud content of shield muck has a higher moisture content and is more difficult to dehydrate. If the undisturbed shield tunneling muck can be used directly without dehydration, it will greatly reduce the front-end treatment cost of the muck, and at the same time, increase the added value of its back-end products. Secondly, at present, for soft soils such as peat, ...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B111/20C04B111/27C04B18/16
CPCC04B28/08C04B2111/2023C04B2111/27C04B2111/29C04B18/16C04B22/064C04B22/10C04B12/04Y02W30/91Y02P40/10C04B28/006C04B18/12C04B18/141C04B18/0418
Inventor 习智琴李水生许宁
Owner CHINA CONSTR FIFTH ENG DIV CORP LTD
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