A kind of non-fired brick with river and lake dredging sediment as the main material and its natural maintenance production method

A technology of dredging sediment and natural conservation, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effects of improving pressure resistance, extensive environmental benefits, and obvious economic benefits

Active Publication Date: 2016-05-11
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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  • A kind of non-fired brick with river and lake dredging sediment as the main material and its natural maintenance production method
  • A kind of non-fired brick with river and lake dredging sediment as the main material and its natural maintenance production method
  • A kind of non-fired brick with river and lake dredging sediment as the main material and its natural maintenance production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A non-burning brick with river and lake dredging sediment as the main material, and the composition of the raw material weight percentage composition 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 non-burning bricks is as described above. The testing indicators are: compressive strength 12.8Mpa, flexural strength 3.4Mpa, and frost resistance 18%.

Embodiment 2

[0038] A non-burning brick mainly composed of dredged mud from rivers and lakes. The raw materials and proportions are as follows: dredged mud: 60%; cement: 20%; sand 12.5%; fly ash: 5%; quicklime: 2%; Sodium silicate: 0.1%; antifreeze magnesium chloride: 0.4%. The process of making non-burning bricks is as described above. The detection indicators are: compressive strength 11.1Mpa, flexural strength 2.9Mpa, and frost resistance 15%.

Embodiment 3

[0040] A non-burning brick with river and lake dredging mud as the main material. The raw materials and proportions are as follows: dredged mud: 70%; cement: 10%; sand 15%; fly ash: 1.5%; quicklime: 3%; Sodium silicate: 0.25%; antifreeze calcium chloride: 0.25%. The process of making non-burning bricks is as described above. The testing indicators are: compressive strength 10.7Mpa, flexural strength 2.5Mpa, and 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 whose main material is dredged mud from rivers and lakes and a natural maintenance manufacturing method thereof. Background technique [0002] At present, with the acceleration of China’s industrialization and urbanization, the water pollution problem is becoming more and more serious. Environmental dredging is an effective engineering method to remove internal source pollution in rivers and lakes. In the restoration and treatment of polluted rivers and lakes, a large amount of pollution will inevitably be generated. The dredged bottom mud. The traditional method of disposal of sediment is to store it in a 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. The existing practices are not i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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