Method for making ecological building bricks through in-situ pre-pressing forming from dredge mud

A technology for dredging mud and brick laying, which is applied in the field of in-situ pre-pressing of dredging mud to make ecological bricks, can solve the problems of land waste, impossible walking, farming, high energy consumption of sintered bricks, etc., and avoid low plant survival rate. , The effect of reducing the area of ​​​​the yard

Active Publication Date: 2012-05-02
江苏省环境工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the landform characteristics of swamps and mud ponds formed by dredging mud dumps, except for the hard crust of about 20 cm on the surface, the nature of the thin mud after a few meters in the lower part cannot be changed for a long time, and it is impossible to walk and cultivate on the surfa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Taking the weight percentage of each raw material, river dredging mud accounts for 20% (water content 40%), cement accounts for 12%, gravel accounts for 40%, sand accounts for 20%, water accounts for 8%; The prefabricated mold for river slope protection bricklaying is prefabricated under a pressure of 15MPa, and the molding time is 6 seconds; after prepressing, the plant growth substrate is squeezed into the pores of the bricklaying and then autoclaved; the soil, which accounts for 42.8% of the weight, will 2% by weight of fertilizers (organic fertilizers or compound fertilizers that promote plant growth), 0.2% by weight of pesticides, 50% by weight of water, and 5% by weight of plant seeds (such as Ophiopogon japonicus, onion orchid, tall sheep One or two or more kinds of grasses), mixed evenly to make a plant growth substrate with a moisture content of 30%, which is squeezed and transported into the pores of prefabricated bricks by a squeeze pump; the above prefabricat...

Embodiment 2

[0021] Take 23% of river dredging mud (moisture content 50%), 15% of cement, 30% of gravel, 30% of sand, and 12% of water; mix the above raw materials evenly, and put them into the prefabricated mold for river slope protection and brick laying. Prefabricated under 30MPa pressure, the molding time is 7 seconds; after prepressing, the plant growth substrate is extruded into the pores of the bricks and then autoclaved; the soil accounting for 55% by weight and the fertilizer accounting for 2% by weight (promoted organic fertilizer or compound fertilizer for plant growth), insecticides accounting for 0.2% by weight, water accounting for 40% by weight, and plant seeds accounting for 2.8% by weight (one or two kinds of Ophiopogon japonicus, onion orchid, tall fescue Above), mix evenly to make a plant growth substrate with a water content of 40%, and use a squeeze pump to squeeze and transport it into the pores of the prefabricated brickwork; the above prefabricated brickwork that is ...

Embodiment 3

[0023] 1. In terms of weight percentage of each raw material, river dredging mud accounts for 30% (moisture content 70%),

[0024] Cement accounts for 12%, crushed stone accounts for 30%, sand accounts for 20%, and water accounts for 8%. Mix the above raw materials evenly, put them into the prefabricated mold for river slope protection and bricklaying, and prefabricate under 20MPa pressure. The molding time is 6-7 seconds; After pre-pressing, the plant growth substrate is extruded into the pores of the bricks and then autoclaved; the soil accounting for 48.7% by weight, the fertilizer (organic fertilizer or compound fertilizer for promoting plant growth) accounting for 3% by weight, and 0.5% by weight % by weight of pesticides, 45% by weight of water, and 2.8% by weight of plant seeds (one or more of Ophiopogon japonicus, green onion, and tall fescue), mixed evenly to make a moisture content of 35% The plant growth substrate is extruded and transported into the pores of the pr...

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Abstract

The invention relates to a method for making ecological building bricks through in-situ pre-pressing forming from dredge mud, which comprises the following steps that: 1, raw materials comprise river channel dredge mud, cement, clastic rocks, sand and water; 2, the materials are uniformly mixed and are loaded into a river channel protection slope prefabricated mold for prefabrication and forming;3, after the pre-pressing forming, the plant growth nutrition pulp is extruded into a building brick hole gap, and then, steaming and pressing maintenance is carried out; 4, soil, fertilizers, insecticide, water and plant seeds are uniformly mixed to be made into plant growth substrates, and the made plant growth substrates are extruded and conveyed to the prefabricated building brick hole gaps by an extruding pump; 5, the building bricks extruded with the plant growth substrates are sent into a steaming and pressing maintenance shop for maintenance; and 6, the materials are placed for 28 days under the natural conditions. The method has the advantages that the in-situ treatment of the dredge mud is realized, the dredge mud is changed into resources to be utilized, the plant growth requirements are met, and the problems of plant recovery difficulty and the like caused by flushing and nutrient loss can be avoided. The ecological building bricks have the characteristics of high intensity and flushing resistance. The plant growth substrates have the effects of ensuring the protection slop plant recovery, improving the river channel protection slop ecological system and building good river channel landscape.

Description

technical field [0001] The invention relates to a method for making ecological bricklaying by pre-pressing dredging mud in situ, and belongs to the technical field of resource utilization for environmental protection. Background technique [0002] The construction of flood control projects in river basins, the management of small and medium rivers, the allocation of water resources and the construction of water ecological protection projects require large-scale dredging of rivers and lakes, which will generate a large amount of dredged mud. Dredged mud generally has the characteristics of high moisture content and low strength, and needs to occupy a large amount of storage yards for stacking. The land requisition and rental costs for storing dredged mud storage yards have accounted for about 60% of the total project cost, which has become a constraint on the project cost. major factor. At the same time, the landform features of swamps and mud ponds formed by the dredged mud...

Claims

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Application Information

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IPC IPC(8): C04B28/00C05G3/02B28B3/00B28B11/24C05G3/60
Inventor 边博李磊吴海锁王惠中姜伟立
Owner 江苏省环境工程技术有限公司
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