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Improved residue soil regeneration backfill material and preparation method thereof

An improved, muck-based technology, applied in the field of civil engineering materials, can solve problems such as huge traffic pressure, construction waste polluting the environment, and affecting construction efficiency

Inactive Publication Date: 2020-02-11
POWERCHINA WATER ENVIRONMENT GOVERANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that it will produce a large amount of construction waste to pollute the environment, and it is necessary to purchase a large amount of backfill materials and transport construction waste and stone powder slag backfill materials, causing huge transportation pressure, affecting construction efficiency, and high project cost

Method used

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  • Improved residue soil regeneration backfill material and preparation method thereof
  • Improved residue soil regeneration backfill material and preparation method thereof
  • Improved residue soil regeneration backfill material and preparation method thereof

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preparation example Construction

[0051] Correspondingly, the embodiment of the present application also provides a preparation method of the above-mentioned improved muck reclaimed backfill material, including the following steps:

[0052] S1. Pre-treatment: pre-treat the muck to remove foreign matter and polluted and deteriorated parts;

[0053] S2. Proportioning design: Weigh each component according to the formula of the improved muck reclaimed backfill material described above;

[0054] S3. Desilting treatment: mixing and stirring the sludge treated with S1 and water to obtain a mixture;

[0055] S4. Mixing operation: Mix the above mixture, cement, fly ash, and early strength agent to obtain the finished product.

[0056] Specifically, in the above step S1, pre-processing the muck includes:

[0057] 1) Remove wood chips, iron chips and other foreign matter mixed in the muck;

[0058] 2) When using polluted and smelly river bottom mud as raw materials, the polluted and deteriorated parts should be removed;

[0059] Spe...

Embodiment 1

[0081] This embodiment provides an improved muck reclaimed backfill material and a preparation method thereof. The above-mentioned improved muck reclaimed backfill material includes the following formula of parts by mass:

[0082]

[0083] The particle size of the above-mentioned muck particles is not greater than 40 mm, wherein the content of particles with a particle diameter of less than 2 mm is 45% by weight, and the content of particles with a particle diameter of 5-20 mm is 25% by weight; the organic matter content in the above-mentioned muck is 3% by weight.

[0084] The preparation method is as follows:

[0085] S11. Pre-treat the muck to remove foreign matter, polluted and deteriorated parts;

[0086] S12. Weigh each component according to the formula of the improved muck reclaimed backfill material described above;

[0087] S13. Mix 2500 parts of S11-treated muck and 600 parts of water to obtain a mixture;

[0088] S14. Mix the above mixture with 210 parts of composite Portlan...

Embodiment 2

[0096] This embodiment provides an improved muck reclaimed backfill material and a preparation method thereof. The above-mentioned improved muck reclaimed backfill material includes the following formula of parts by mass:

[0097]

[0098] The particle size of the above-mentioned slag particles is not greater than 40 mm, wherein the content of particles with a particle size of less than 2 mm is 45% by weight, and the content of particles with a particle size of 5-20 mm is 25% by weight; the organic matter content in the above-mentioned slag is 3% by weight.

[0099] The preparation method is as follows:

[0100] S21. Pre-treat the muck to remove foreign matter, polluted and deteriorated parts;

[0101] S22. Weigh each component according to the formula of the improved muck reclaimed backfill material described above;

[0102] S23. Mix 2200 parts of the residue treated with S21 and 700 parts of water to obtain a mixture;

[0103] S24. Mix the above mixture with 160 parts of composite Por...

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Abstract

The invention provides an improved residue soil regeneration backfill material and a preparation method thereof, wherein residue soil is used as a main component and is doped with a proper amount of cement, water, fly ash and an early strength agent, and mixing stirring is performed to prepare the improved residue soil regeneration backfill material. The preparation method comprises: removing foreign matters and contaminated and deteriorated parts, respectively weighing various components according to the formula, and mixing and stirring the weighed components until the texture is uniform so as to obtain the finished product. According to the invention, with the method, the reutilization of residue soil is achieved, the environment pollution caused by pipeline excavation operation is reduced, the engineering cost of backfill operation is reduced, and the later strength of the backfill material is improved while the backfill material has enough fluidity.

Description

Technical field [0001] This application relates to the field of civil engineering materials, in particular to an improved muck reclaimed backfill material and a preparation method thereof. Background technique [0002] At present, my country is in a period of rapid construction and development, and urban pipe network construction will produce a large number of foundation trenches or trenches that need to be filled and repaired. Therefore, backfilling of foundation trenches and trench backfilling are problems that this field needs to face frequently. [0003] In the prior art, people usually treat pipeline construction excavation soil as construction waste, and use stone powder slag backfill materials for backfill operations. [0004] The disadvantages of the prior art are that it will generate a large amount of construction waste to pollute the environment, and it is necessary to purchase a large amount of backfill materials and transport construction waste and stone powder slag back...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/08C04B28/02
CPCC04B28/021C04B28/04C04B28/08C04B2111/00663C04B18/16C04B2103/12C04B18/08
Inventor 薛信恺徐浩蒋自胜邱礼城苏良缘陈秋宇俞静雯
Owner POWERCHINA WATER ENVIRONMENT GOVERANCE
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