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Baking-free brick mainly prepared from river/lake dredging sediment and natural-curing manufacturing method thereof

A technology for dredging sediment and natural conservation, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve low cost, obvious economic benefits, and improved compression resistance.

Active Publication Date: 2014-12-03
CCCC TDC ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of making unburned bricks with dredged silt as the main raw material has solved the problems of silt utilization and energy saving.

Method used

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  • Baking-free brick mainly prepared from river/lake dredging sediment and natural-curing manufacturing method thereof
  • Baking-free brick mainly prepared from river/lake dredging sediment and natural-curing manufacturing method thereof
  • Baking-free brick mainly prepared from river/lake dredging sediment and natural-curing manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A non-burning brick with river and lake dredging sediment as the main material, the composition of the raw material weight percentage is as follows: dredged sediment: 50%; cement: 15%; sand: 30%; fly ash: 2%; quicklime: 2.5%; Sodium silicate: 0.2%; antifreeze calcium chloride: 0.3%. The process of making unburned bricks is as described above. The test indicators are: compressive strength 12.8Mpa, flexural strength 3.4Mpa, frost resistance 18%.

Embodiment 2

[0038] A non-burning brick with river and lake dredging sediment as the main material, the raw materials and proportions are as follows: dredged sediment: 60%; cement: 20%; sand 12.5%; fly ash: 5%; quicklime: 2%; Sodium Silicate: 0.1%; Antifreeze Magnesium Chloride: 0.4%. The process of making unburned bricks is as described above. The test indicators are: compressive strength 11.1Mpa, flexural strength 2.9Mpa, frost resistance 15%.

Embodiment 3

[0040] Disclosed is a non-burning brick with river and lake dredging sediment as the main material. The raw materials and proportions are as follows: dredged sediment: 70%; cement: 10%; sand: 15%; fly ash: 1.5%; quicklime: 3%; Sodium silicate: 0.25%; antifreeze calcium chloride: 0.25%. The process of making unburned bricks is as described above. The test indicators are: compressive strength 10.7Mpa, flexural strength 2.5Mpa, frost resistance 20%.

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Abstract

The invention relates to a baking-free brick mainly prepared from river / lake dredging sediment and a natural-curing manufacturing method thereof, belonging to the technical fields of environmental engineering and construction materials. The baking-free brick is composed of the following raw materials in percentage by weight: 50-70% of dredging sediment, 10-20% of cement, 12.5-30% of sand, 1.5-5% of fly ash, 2-3% of quicklime, 0.1-0.25% of sodium silicate and 0.25-0.4% of antifreezing agent. The manufacturing method comprises the following steps: (1) dredging sediment dehydration: dehydrating the dredging sediment until the water content is less than 30%; (2) mixing: carrying out dry mixing on the dredging sediment, cement, sand, fly ash, sodium silicate and antifreezing agent; adding water, carrying out wet mixing, adding quicklime and stirring; (3) rolling; (4) brick making: making the brick with a brick making machine through vibration and pressurization; and (5) natural curing: piling the bricks, and naturally curing to obtain the baking-free bricks. The method is simple in technique and convenient to operate, changes wastes into valuable substances, and has the advantages of high brick quality, low cost, obvious benefit, environment friendliness and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and building materials, and in particular relates to a non-burning brick made of river and lake dredging bottom mud as the main material and a natural maintenance production method thereof. Background technique [0002] At present, with the acceleration of industrialization and urbanization in China, the problem of water pollution is becoming more and more serious. Environmental dredging is an effective engineering method to remove internal pollution of rivers and lakes. When repairing and treating polluted rivers and lakes, a large number of dredged sediment. The traditional sediment disposal method is to use the storage yard for natural drying, but this method not only takes up a lot of land, but also easily causes secondary pollution to the surrounding environment during the stacking process. Existing practices are also not in line with people's comprehensive understanding of...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 胡保安徐志平范文雪王琦
Owner CCCC TDC ENVIRONMENTAL ENG
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