CN111233409A - Method for preparing water-permeable non-fired product by utilizing shield muck - Google Patents
Method for preparing water-permeable non-fired product by utilizing shield muck Download PDFInfo
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- CN111233409A CN111233409A CN201910981092.9A CN201910981092A CN111233409A CN 111233409 A CN111233409 A CN 111233409A CN 201910981092 A CN201910981092 A CN 201910981092A CN 111233409 A CN111233409 A CN 111233409A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a method for preparing a water-permeable non-fired product by utilizing shield muck. The permeable structure layer is formed by pressing and molding materials such as muck, cementing materials and the like through a special mold; the sand-based permeable layer is prepared from materials such as metakaolin, superfine mineral powder admixture and the like. The permeable structure layer is connected with the sand-based permeable layer through a concave-convex interlocking structure. The product adopts a baking-free brick technology, and the technology has the advantages of low energy consumption, environmental protection, energy conservation, high product strength and the like, and completely meets the requirements of sustainable development; the product is made of shield muck, cement and other raw materials, has wide material sources, solves the problem of difficult stacking of the building muck, and realizes the recycling of the muck; the product has good mechanical property and water permeability, and is a key material required by permeable roads, squares and the like in sponge city construction.
Description
Technical Field
The invention relates to the field of building materials, in particular to a method for preparing a water-permeable non-fired product by utilizing shield muck.
Background
With the acceleration of the urbanization and urban transformation process in China, land resources are greatly occupied, the yield of construction waste is gradually increased, and the increment of construction waste is rapid. Building residue soil seriously affects the environment and is not beneficial to resource utilization. The baking-free product prepared from the shield muck can solve a series of social and environmental problems, and has important significance for promoting the resource utilization of the construction waste.
The sintered product consumes a large amount of coal fuel in the production process, and simultaneously, harmful gas is discharged to pollute the environment, and a large amount of land resources are consumed by field destruction and soil borrowing. The brick has the defects of small block size, low construction efficiency, heavy self weight of the masonry, poor earthquake resistance and the like, and is forbidden to be used in major and middle cities and regions in China.
The baking-free product as a novel material can effectively solve the problems, not only can solve the problem of accumulation of part of shield muck, but also can avoid a series of problems of destroying the ecological environment in the production of sintered products. Meets the requirements of waste utilization, environmental protection, energy conservation and sustainable development in China.
The permeable product has good water permeability, can supplement underground water, reduce urban drainage and flood control pressure, and can absorb moisture and heat and regulate local temperature and humidity. Is an important green environment-friendly novel building material product for maintaining the urban ecological balance.
Disclosure of Invention
The invention aims to prepare a water-permeable non-fired product by adopting shield muck, cement and other raw materials. The product consists of a permeable structure layer and a sand-based permeable layer, wherein an artificial communicating gap is arranged in the permeable structure layer, and the permeable structure layer and the sand-based permeable layer are riveted through a concave-convex structure. The problems that the building residue soil pollutes the urban atmosphere, occupies a large amount of land, influences the urban appearance and the like are solved to a certain extent, and therefore the resource utilization rate of the building garbage is improved.
A water permeable non-fired product comprises a water permeable structure layer and a sand-based water permeable layer. The water permeable structure layer is formed by pressing and molding materials such as shield muck, cementing materials and the like through a special mold; the sand-based permeable layer is prepared from materials such as metakaolin, superfine mineral powder admixture and the like. The permeable structure layer is connected with the sand-based permeable layer through a concave-convex interlocking structure.
The water permeable structure layer is convex, and two sides of the water permeable structure layer are respectively provided with a communicating pore. The mixing ratio is as follows: 100 parts of shield muck, 8-12 parts of cement, 1.6-1.9 parts of lime, 0.5-0.7 part of silica fume, 10.8-11.5 parts of water and 0.5-0.9 part of starch.
The sand-based permeable layer is cuboid. The mixing ratio is as follows: 150 parts of metakaolin, cement and superfine mineral powder, 460 parts of sand with the particle size of 0.15-2mm, 0.5-7.5 parts of dispersible latex powder, 0.05-0.75 part of methyl cellulose, 0.02-0.75 part of polyacrylamide, 0.03-7.5 parts of aminosilane coupling agent, 0.03-0.75 part of nano silicon dioxide, 0.05-0.75 part of polycarboxylic acid water reducing agent and 20-60 parts of water.
The shield muck refers to underground soil dug out by a shield machine in the subway construction process, and is dried in the sun and then crushed into raw materials with the diameter not more than 5mm by a crusher for later use.
The cement is 42.5 or 52.5 grade common portland cement sold in the market; the calcium content of the lime is more than 85 percent, the impurity content is less than 5 percent, the fineness is 500 meshes, and the effective calcium content is 44 percent; the loss on ignition of the silica fume is 1.2 percent.
The grain diameter of the higher territory is 200-1000 meshes; the particle size of the superfine mineral powder is 1000 meshes; the sand is 0.15mm-2mm machine-made sand, quartz sand or natural sand; the dispersible latex powder, the methyl cellulose, the polyacrylamide, the aminosilane coupling agent, the nano silicon dioxide and the polycarboxylic acid water reducing agent are all in the common specifications sold in the market.
The preparation method of the shield muck permeable non-fired product specifically comprises the following steps:
(1) drying or sun-drying the shield muck;
(2) crushing the dried soil sample into residue soil with the thickness not more than 5mm by a crusher for later use;
(3) weighing the treated shield residual soil, cement, lime, silica fume and starch in proportion, and placing the weighed materials into a stirrer for dry mixing for 1-5 min. Uniformly stirring the dry materials, adding water, and stirring for 5-10min to obtain a base layer mixture;
(4) layering the obtained base layer mixture for 2-3 times, loading into a prefabricated mold, press-forming under 20-50MPa, and steam curing for 8-24 hr or natural curing for 7-14 days to obtain a permeable structure layer;
(5) the steam curing temperature is 60-80 ℃, and the humidity is more than 95%;
(6) weighing raw materials of the sand-based permeable layer according to a mixing ratio, fully stirring, layering and filling into a prefabricated mould for 2-3 times, pressing and forming under the pressure of 1-10MPa, and naturally curing for 8-72 hours to obtain the sand-based permeable layer;
(7) the permeable structure layer is connected with the sand-based permeable layer through a concave-convex interlocking structure.
Compared with the prior art, the invention has the advantages that:
the invention adopts a baking-free product technology, has the advantages of low energy consumption, environmental protection, energy saving, high product strength and the like, and completely meets the requirements of sustainable development.
The product is made of shield muck, cement and other raw materials, has wide material sources, solves the problem of difficult stacking of construction waste, and realizes resource utilization.
The product of the invention has good mechanical property and water permeability, and is a key material required by permeable roads, squares and the like in sponge city construction.
Drawings
In order to more clearly express the technical scheme of the invention, the description of the attached drawings is provided;
FIG. 1 is a schematic view of a water-permeable baking-free product;
FIG. 2 is a forming diagram of a water permeable structure layer;
FIG. 3 is a forming diagram of a sand-based permeable layer;
in the figure: the sand-based permeable layer 1, the permeable structure layer 2 and the communicating pore 3, wherein the size unit is mm in the figure.
Detailed Description
The present invention is further illustrated below with reference to specific examples. These examples are intended to illustrate the invention only and do not limit the scope of the invention.
Example 1
The embodiment relates to a exempt from burning product permeates water, including the structural layer and the sand base permeable layer of permeating water, the structural layer convex of permeating water, the match ratio is: 100 parts of shield muck, 11 parts of water, 7 parts of cement, 1.7 parts of lime, 0.6 part of silica fume and 0.7 part of starch; the sand-based permeable layer is a cuboid and comprises the following components in parts by weight: 528 parts of sand with the diameter of 0.15-0.6mm, 12 parts of metakaolin, 110 parts of cement, 12 parts of superfine mineral powder, 1.3 parts of dispersible latex powder, 0.07 part of methyl cellulose, 0.03 part of polyacrylamide, 0.03 part of aminosilane coupling agent, 0.03 part of nano silicon dioxide, 0.37 part of polycarboxylic acid water reducing agent and 35 parts of water.
The method specifically comprises the following steps:
as shown in FIG. 1, a schematic view of a water-permeable baking-free product comprises a sand-based water-permeable layer 1 and a water-permeable structure layer 2.
Preparing a water permeable structure layer: weighing the raw materials in proportion, putting the raw materials into a stirrer, mixing the raw materials uniformly, adding water, stirring the mixture for 10min to obtain a base layer mixture, putting the base layer mixture into a permeable structure layer compression forming mould in layers for 2 times, performing compression forming under the pressure of 20MPa, and curing for 24h in a steam curing box with the temperature of 80 ℃ and the humidity of 95% to obtain the permeable structure layer, wherein the steps are shown in figure 2.
Preparing a sand-based permeable layer: the raw materials of the sand-based permeable layer are weighed according to a proportion, the mixture of the surface layer is obtained after fully stirring, the mixture is loaded into a prefabricated mould in layers for 2 times, after the mixture is pressed and formed under the pressure of 3MPa, the sand-based permeable layer is obtained after natural curing for 12 hours, and the sand-based permeable layer is shown in figure 3.
The permeable structure layers are connected side by side, and the sand-based permeable layer is arranged in the concave position between the structure layers, so that the permeable non-fired product is manufactured.
The performance parameters of the water-permeable baking-free product are as follows:
| name (R) | Porosity% | Coefficient of water permeability mm/s | Compressive strength MPa |
| Article of manufacture | 19.1 | 3.4 | 40.1 |
| Permeable structure layer | 20 | 16 | 20.5 |
| Sand-based permeable layer | 16 | 2.46 | 42.5 |
Example 2
The embodiment relates to a exempt from burning product permeates water, including the structural layer and the sand base permeable layer of permeating water, the structural layer convex of permeating water, the match ratio is: 100 parts of shield muck, 11 parts of water, 7.52 parts of cement, 1.88 parts of lime and 0.6 part of silica fume; the sand-based permeable layer is a cuboid and comprises the following components in parts by weight: 528 parts of 0.6-2mm sand, 117 parts of cement, 13 parts of metakaolin, 13 parts of superfine mineral powder, 2 parts of dispersible emulsion powder, 0.07 part of methyl cellulose, 0.02 part of polyacrylamide, 0.03 part of aminosilane coupling agent, 0.03 part of nano silicon dioxide, 0.37 part of Cika polycarboxylic acid water reducer and 35 parts of water.
The method specifically comprises the following steps:
as shown in figure 1, a schematic diagram of a water-permeable baking-free product comprises a sand-based water-permeable layer 1 and a water-permeable structural layer 2.
Preparing a water permeable structure layer: weighing the raw materials in proportion, putting the raw materials into a stirrer, mixing the raw materials uniformly, adding water, stirring the mixture for 10min to obtain a base layer mixture, putting the base layer mixture into a permeable structure layer compression molding mould in layers for 2 times, performing compression molding under the pressure of 20MPa, and performing natural curing for 14d to obtain the permeable structure layer, wherein the steps are shown in figure 2.
Preparing a sand-based permeable layer: the raw materials of the sand-based permeable layer are weighed according to a proportion, the mixture of the surface layer is obtained after fully stirring, the mixture is loaded into a prefabricated mould in layers for 2 times, after the mixture is pressed and formed under the pressure of 3MPa, the sand-based permeable layer is obtained after natural curing for 12 hours, and the sand-based permeable layer is shown in figure 3.
The permeable structure layers are connected side by side, and the sand-based permeable layer is arranged in the concave position between the structure layers, so that the permeable non-fired product is manufactured.
The performance parameters of the water-permeable baking-free product are as follows:
| name (R) | Porosity% | Coefficient of water permeability mm/s | Compressive strength MPa |
| Article of manufacture | 18.8 | 3.3 | 41.9 |
| Permeable structure layer | 22.4 | 18 | 19.3 |
| Sand-based permeable layer | 16 | 2.2 | 45.4 |
Claims (5)
1. A method for preparing a water-permeable burning-free product by utilizing shield muck comprises a water-permeable structure layer and a sand-based water-permeable layer, wherein the water-permeable structure layer is formed by pressing and molding materials such as shield muck, a cementing material and the like through a special mold, and the sand-based water-permeable layer is prepared from materials such as metakaolin, an ultrafine mineral powder admixture and the like.
2. The water permeable structure layer of claim 1 is convex, and the mixing ratio is: 100 parts of subway shield muck, 10.8-11.5 parts of water, 8-12 parts of cement, 1.6-1.9 parts of lime, 0.5-0.7 part of silica fume, 10.8-11.5 parts of water and 0.5-0.9 part of starch.
3. The sand-based permeable layer according to claim 1 is a cuboid, and the mixing ratio is as follows: 150 parts of metakaolin, cement and superfine mineral powder, 460-530 parts of sand with the thickness of 0.15-2mm, 0.5-7.5 parts of dispersible latex powder, 0.05-0.75 part of methyl cellulose, 0.05-0.75 part of polyacrylamide, 0.5-7.5 parts of amino silane coupling agent, 0.05-0.75 part of nano silicon dioxide and 20-60 parts of water.
4. The shield muck is underground soil dug out by a shield machine in the subway construction process, the shield muck is dried and then crushed into raw materials with the diameter not more than 5mm by a crusher for standby, the cement is commercially available 42.5 or 52.5-grade ordinary portland cement, the calcium content of lime is more than 85 percent, the impurities are less than 5 percent, the fineness is 500 meshes, the effective calcium content is 44 percent, the loss of silica fume is 1.2 percent, the metakaolin is 200 meshes and 1000 meshes, the cement is commercially available 42.5-grade ordinary portland cement, the superfine mineral powder is 1000 meshes, the sand is 0.15mm-2mm mechanically-manufactured sand, quartz sand or natural sand, and the dispersible latex powder, methylcellulose, polyacrylamide, an aminosilane coupling agent, nano silicon dioxide and polycarboxylic acid water reducer are commercially available ordinary specifications.
5. A method for preparing a water-permeable non-fired product by utilizing shield muck specifically comprises the following steps:
(1) weighing the shield residual soil, the cement, the lime, the silica fume and the starch in proportion, putting the mixture into a stirrer for dry mixing for 1-5min, adding water and stirring for 5-10min after the dry materials are uniformly stirred to obtain a base layer mixture;
(2) and (3) layering the obtained base layer mixture for 2-3 times, filling the base layer mixture into a prefabricated mould, pressing and forming under the pressure of 20-50MPa, and performing steam curing for 8-24h or natural curing for 7-14 days to obtain the permeable structure layer, wherein the steam curing temperature is 60-80 ℃, and the humidity is more than 95%.
(3) Weighing raw materials of the sand-based permeable layer according to a mixing ratio, fully stirring, layering and filling into a prefabricated mould for 2-3 times, pressing and forming under the pressure of 1-10MPa, and naturally curing for 8-72 hours to obtain the sand-based permeable layer;
(4) the permeable structure layer is connected with the sand-based permeable layer through a concave-convex interlocking structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910981092.9A CN111233409A (en) | 2019-10-16 | 2019-10-16 | Method for preparing water-permeable non-fired product by utilizing shield muck |
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| CN201910981092.9A CN111233409A (en) | 2019-10-16 | 2019-10-16 | Method for preparing water-permeable non-fired product by utilizing shield muck |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047678A (en) * | 2020-08-10 | 2020-12-08 | 武汉富洛泰克材料科技有限公司 | Colored artificial stone permeable sand-based pavement material and preparation method thereof |
| CN112194454A (en) * | 2020-10-22 | 2021-01-08 | 中南大学 | Shield muck unfired hollow brick and preparation method thereof |
| CN116813273A (en) * | 2023-06-19 | 2023-09-29 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
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| KR20140014677A (en) * | 2012-07-25 | 2014-02-06 | 주식회사 서호에코탑 | Water permeable block having eco-friendly heat shield function and method for the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112047678A (en) * | 2020-08-10 | 2020-12-08 | 武汉富洛泰克材料科技有限公司 | Colored artificial stone permeable sand-based pavement material and preparation method thereof |
| CN112194454A (en) * | 2020-10-22 | 2021-01-08 | 中南大学 | Shield muck unfired hollow brick and preparation method thereof |
| CN116813273A (en) * | 2023-06-19 | 2023-09-29 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
| CN116813273B (en) * | 2023-06-19 | 2024-03-19 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
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Application publication date: 20200605 |