CN109437743A - A kind of converter slag pervious concrete and preparation method thereof - Google Patents
A kind of converter slag pervious concrete and preparation method thereof Download PDFInfo
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- CN109437743A CN109437743A CN201811473798.6A CN201811473798A CN109437743A CN 109437743 A CN109437743 A CN 109437743A CN 201811473798 A CN201811473798 A CN 201811473798A CN 109437743 A CN109437743 A CN 109437743A
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of converter slag pervious concrete material, including siccative, water-reducing agent and water, the siccative by weight, including following components: 10-35 parts of cement；First 15-45 parts of steel slag；Second 30-65 parts of steel slag；The additional amount of the water-reducing agent is appropriate；The additional amount of the water is appropriate.The present invention further provides a kind of preparation methods of converter slag pervious concrete.A kind of converter slag pervious concrete provided by the invention and preparation method thereof, using by superheated vapor treated converter slag, by the pervious concrete aggregate for being sieved into stability qualification, prepare pervious concrete, natural resources are saved, meet national recycling economy and utilize policy, it is contemplated that there is apparent social economy and environmental benefit.
Description
Technical field
The invention belongs to the technical field of New Building Materials, it is related to a kind of converter slag pervious concrete and its preparation side
Method, and in particular to the pervious concrete and preparation method thereof that the converter slag after processing sorting gathers materials as aggregate preparation.
Background technique
With the continuous development that urban modernization is built, city is covered by armored concrete, waterproof pavement respiratory
Difference can not permeate rainwater.And permeability steel slag concrete is Eco-friendly concrete, with the big spy of porous structure, porosity
Point can permeate rainwater, increase urban groundwater resource, improve urban climate, protect environment.Pervious concrete can be widely applied
In municipal administration, cell, gardens, the road engineering in square field and parking lot etc..
Steel slag is the waste residue generated in steelmaking process, also different according to process for making and Technology of Steel Slag Processing heterogeneity.
According to process for making difference, the steel slag of generation is not also identical, and country's steel slag mainly has converter slag and electric furnace slag at present.Electric furnace
Steel slag is widely used in construction material since stability is preferable, using very extensive, raising especially in pervious concrete
Its economic value added.And converter slag accounts for about the 70% of steel slag total amount, due to joined life in converter slag treatment process
Lime, becomes the free calcium oxide of dead roasting by high temperature, if the aggregate for being used for construction material will cause building materials later period chance
It is bad to occur stability, therefore limits its use in pervious concrete for water sounding volume expansion.And converter after study
The activity of steel slag is apparently higher than electric furnace slag, by being used to prepare pervious concrete after solving its stability problem, can make its property
The pervious concrete of electric furnace slag preparation can be substantially better than.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of converter slag pervious concretes
And preparation method thereof, gather materials for solving to lack in the prior art the converter slag after processing sorting as aggregate preparation
The problem of pervious concrete.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of converter slag pervious concrete
Material, including siccative, water-reducing agent and water, the siccative by weight, including following components:
10-35 parts of cement；
First 15-45 parts of steel slag；
Second 30-65 parts of steel slag；
The additional amount of the water-reducing agent is appropriate；
The additional amount of the water is appropriate.
Siccative component first carries out metering mixing in above-mentioned raw materials, then is mixed with water-reducing agent, water, is placed on ground and carries out
Molding, can prepare the converter slag pervious concrete.
Preferably, a kind of converter slag pervious concrete material, including siccative, water-reducing agent and water, the siccative are pressed
Parts by weight meter, including following components:
15-30 parts of cement；
First 20-40 parts of steel slag；
Second 35-60 parts of steel slag；
The additional amount of the water-reducing agent is the 0.1-2.0wt% of cement consumption；
The weight ratio of the water and cement consumption are as follows: 0.1-0.5:1.
It is highly preferred that a kind of converter slag pervious concrete material, including siccative, water-reducing agent and water, the siccative
By weight, including following components:
20-25 parts of cement；
First 25-35 parts of steel slag；
Second 40-55 parts of steel slag；
The additional amount of the water-reducing agent is the 0.5-1.0wt% of cement consumption；
The weight ratio of the water and cement consumption are as follows: 0.2-0.3:1.
Preferably, the cement is 42.5 grades of ordinary portland cements (OPC) of P.O.Specifically, the cement is served as reasons
42.5 grades of ordinary portland cements of P.O of conch Cement Co., Ltd production.
Preferably, first steel slag and the second steel slag are converter slag.The converter slag is upper marine smelting environment
Engineering science and technology Co., Ltd provides.
It is highly preferred that the converter slag is handled 6-8 hours using preceding through superheated vapor.
It is further preferred that the steam temperature is 180-220 DEG C.
It is highly preferred that the performance condition of the converter slag are as follows: f-CaO (free calcium oxide)≤3wt%；Mohs' hardness >=
6；Specific gravity is in 3.0-3.6 tons/cubic meter.
Preferably, the partial size of first steel slag >=3mm and < 7mm.
Preferably, the partial size of second steel slag is 7-15mm.Coagulation is increased by providing large-sized second steel slag
The water penetration of soil.
Preferably, the water-reducing agent is polycarboxylate water-reducer (PCE).Specifically, the water-reducing agent is the auspicious height in Shanghai three
The SD-600P type polycarboxylate water-reducer that molecular material limited liability company provides.
Preferably, the water is tap water.
Second aspect of the present invention provides a kind of preparation method of converter slag pervious concrete, including by above-mentioned permeable mixed
Solidifying soil material prepares pervious concrete.
Third aspect present invention provides a kind of preparation method of converter slag pervious concrete, comprising the following steps:
1) by steel slag after Steam treatment, screening obtains the first steel slag and the second steel slag；
2) it by cement in siccative and the first steel slag, the second steel slag, is stirred after measuring by weight, sequentially adds and subtract
Aqua and water are stirred mixing, obtain the mixture of semi-drying；
3) mixture of semi-drying obtained by step 2) is placed on ground, carries out vibrating forming, strike off, receive light, maintenance, both
Obtain the converter slag pervious concrete.
Preferably, in step 1), the time of the Steam treatment is 6-8 hours.
Preferably, in step 1), the temperature of the Steam treatment is 180-220 DEG C.
Preferably, in step 2), each component is stirred the time of mixing as 30-40s in the siccative.
Preferably, in step 2), it is described sequentially add water-reducing agent and water to be stirred the time of mixing be 60-100s.
Preferably, in step 2), blender used by the stirring is general concrete mixer.
Preferably, in step 3), the ground will be tamped, and carry out smooth processing.
Preferably, in step 3), the vibrating forming refers to using the general small-sized jarring machine of concrete construction to paving
Mixture carry out microseism, make concrete formation.
Preferably, in step 3), the time of the vibrating forming is vibration until the bleeding of mixture surface layer.
Preferably, in step 3), described strike off is to instigate the surface layer for the mixture being placed on ground smooth.
Preferably, in step 3), the receipts light refers to be received using surface layer of the concrete general photoreceiver to mixture
Light.
Preferably, in step 3), the maintenance is the natural curing covered of sprinkling water.
Preferably, in step 3), curing time >=24 hour.
Fourth aspect present invention provides a kind of converter slag pervious concrete, is prepared by above-mentioned preparation method.
As described above, a kind of converter slag pervious concrete provided by the invention and preparation method thereof, has beneficial below
Effect:
(1) a kind of converter slag pervious concrete provided by the invention and preparation method thereof, using by superheated vapor
Converter slag after reason discharges its free calcium oxide unstability ingredient in advance, by being sieved into the permeable of stability qualification
The pervious concrete that performance meets pervious concrete concerned countries professional standard is prepared with it in aggregate, saves
Natural resources meet national recycling economy and utilize policy, it is contemplated that have apparent social economy and environmental benefit.
(2) a kind of converter slag pervious concrete provided by the invention and preparation method thereof, the work of the converter slag of use
Property is apparently higher than electric furnace slag, by being used to prepare pervious concrete after solving its stability problem, its performance can be made obviously excellent
In the pervious concrete of electric furnace slag preparation.
(3) a kind of converter slag pervious concrete provided by the invention and preparation method thereof, the converter slag of preparation is permeable
Concrete is widely used in sponge urban construction, belongs to the recycling of Industrial Solid waste, turns waste into wealth, and exploitation converter slag is high
Added value utilizes new technology, new way.
Specific embodiment
The present invention is further explained combined with specific embodiments below, it should be appreciated that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be clear that in the following example not specifically dated process equipment or device be all made of conventional equipment in the art or
Device；All pressure values and range all refer to relative pressure.
In addition, it should also be understood that, one or more method and step mentioned in the present invention does not repel before and after the combination step
It can also be inserted into other methods step there may also be other methods step or between these explicitly mentioned steps, unless separately
It is described；It should also be understood that the combination connection relationship between one or more equipment/device mentioned in the present invention is not repelled
The two equipment/devices specifically mentioned before and after the unit equipment/device there may also be other equipment/device or at these it
Between can also be inserted into other equipment/device, unless otherwise indicated.Moreover, unless otherwise indicated, the number of various method steps is only
Identify the convenient tool of various method steps, rather than for the arrangement order of limitation various method steps or limits the enforceable model of the present invention
It encloses, relativeness is altered or modified, and without material changes in technical content, when being also considered as, the present invention is enforceable
Scope.
Embodiment 1
Screening obtains the first steel slag and the second steel slag after converter slag is handled 6-8 hours under 180-220 DEG C of steam,
Wherein, the partial size of the first steel slag >=3mm and < 7mm, the partial size of the second steel slag are 7-15mm.The performance condition of converter slag are as follows:
F-CaO (free calcium oxide)≤3wt%；Mohs' hardness >=6；Specific gravity is in 3.0-3.6 tons/cubic meter.
Take siccative component respectively by weight: 20 parts of cement, 25 parts of the first steel slag, 55 parts of the second steel slag are stirred
30-40s, sequentially adds water-reducing agent and water is stirred mixing 60-100s, obtains the mixture of semi-drying.Wherein, water-reducing agent
Additional amount be cement consumption 0.5wt%, water is 0.3 times of cement consumption.Cement is 42.5 grades of normal silicate water of P.O
Mud (OPC).Water-reducing agent is polycarboxylate water-reducer (PCE).The water is tap water.
The mixture of semi-drying is placed on the ground of compacting again, using the general small-sized jarring machine of concrete construction to booth
Until the mixture of paving carries out microseism to mixture surface layer bleeding, make concrete formation.The mixture being placed on ground again is scraped
It is flat, keep its surface layer smooth, carries out receipts light using surface layer of the concrete general photoreceiver to mixture, natural curing >=24 hour,
Both the converter slag pervious concrete sample 1#.Specific formula data are shown in Table 1.
Embodiment 2
Screening obtains the first steel slag and the second steel slag after converter slag is handled 7 hours under 200 DEG C of steam, wherein
The partial size of first steel slag is 3-5mm, and the partial size of the second steel slag is 7-10mm.The performance condition of converter slag are as follows: f-CaO is (free
Calcium oxide) 1-3wt%；Mohs' hardness is 7；Specific gravity is in 3.0-3.3 tons/cubic meter.
Take siccative component respectively by weight: 20 parts of cement, 35 parts of the first steel slag, 45 parts of the second steel slag are stirred
35s, sequentially adds water-reducing agent and water is stirred mixing 80s, obtains the mixture of semi-drying.Wherein, the addition of water-reducing agent
Amount is the 0.5wt% of cement consumption, and water is 0.3 times of cement consumption.Cement is 42.5 grades of ordinary portland cements of P.O
(OPC).Water-reducing agent is polycarboxylate water-reducer (PCE).The water is tap water.
The mixture of semi-drying is placed on the ground of compacting again, using the general small-sized jarring machine of concrete construction to booth
Until the mixture of paving carries out microseism to mixture surface layer bleeding, make concrete formation.The mixture being placed on ground again is scraped
It is flat, keep its surface layer smooth, carries out receipts light using surface layer of the concrete general photoreceiver to mixture, natural curing 24 hours, both
Obtain the converter slag pervious concrete sample 2#.Specific formula data are shown in Table 1.
Embodiment 3
Screening obtains the first steel slag and the second steel slag after converter slag is handled 6 hours under 210 DEG C of steam, wherein
The partial size of first steel slag is 6-6.9mm, and the partial size of the second steel slag is 11-15mm.The performance condition of converter slag are as follows: f-CaO (trip
From calcium oxide) it is 1-2wt%；Mohs' hardness is 8；Specific gravity is in 3.4-3.6 tons/cubic meter.
Take siccative component respectively by weight: 25 parts of cement, 30 parts of the first steel slag, 45 parts of the second steel slag are stirred
40s, sequentially adds water-reducing agent and water is stirred mixing 90s, obtains the mixture of semi-drying.Wherein, the addition of water-reducing agent
Amount is the 1.0wt% of cement consumption, and water is 0.2 times of cement consumption.Cement is 42.5 grades of ordinary portland cements of P.O
(OPC).Water-reducing agent is polycarboxylate water-reducer (PCE).The water is tap water.
The mixture of semi-drying is placed on the ground of compacting again, using the general small-sized jarring machine of concrete construction to booth
Until the mixture of paving carries out microseism to mixture surface layer bleeding, make concrete formation.The mixture being placed on ground again is scraped
It is flat, keep its surface layer smooth, carries out receipts light using surface layer of the concrete general photoreceiver to mixture, natural curing 48 hours, both
Obtain the converter slag pervious concrete sample 3#.Specific formula data are shown in Table 1.
Embodiment 4
Screening obtains the first steel slag and the second steel slag after converter slag is handled 8 hours under 190 DEG C of steam, wherein
The partial size of first steel slag is 4-6mm, and the partial size of the second steel slag is 9-12mm.The performance condition of converter slag are as follows: f-CaO is (free
Calcium oxide) 2-3wt%；Mohs' hardness is 9；Specific gravity is in 3.3-3.5 tons/cubic meter.
Take siccative component respectively by weight: 25 parts of cement, 25 parts of the first steel slag, 50 parts of the second steel slag are stirred
30s, sequentially adds water-reducing agent and water is stirred mixing 70s, obtains the mixture of semi-drying.Wherein, the addition of water-reducing agent
Amount is the 1.0wt% of cement consumption, and water is 0.2 times of cement consumption.Cement is 42.5 grades of ordinary portland cements of P.O
(OPC).Water-reducing agent is polycarboxylate water-reducer (PCE).The water is tap water.
The mixture of semi-drying is placed on the ground of compacting again, using the general small-sized jarring machine of concrete construction to booth
Until the mixture of paving carries out microseism to mixture surface layer bleeding, make concrete formation.The mixture being placed on ground again is scraped
It is flat, keep its surface layer smooth, carries out receipts light using surface layer of the concrete general photoreceiver to mixture, natural curing 36 hours, both
Obtain the converter slag pervious concrete sample 4#.Specific formula data are shown in Table 1.
Table 1
| Number | First steel slag | Second steel slag | Cement | Water-reducing agent | Water |
| 1# | 25 parts | 55 parts | 20 parts | The 0.5% of cement consumption | 0.3 times of cement consumption |
| 2# | 35 parts | 45 parts | 20 parts | The 0.5% of cement consumption | 0.3 times of cement consumption |
| 3# | 30 parts | 45 parts | 25 parts | The 1% of cement consumption | 0.2 times of cement consumption |
| 4# | 25 parts | 50 parts | 25 parts | The 1% of cement consumption | 0.2 times of cement consumption |
Embodiment 5
The converter slag pervious concrete sample 1#-4# that will be obtained in embodiment 1-4 is " common by GB/T50081-2002
Mechanical performance of concrete test method standard " 28 days intensity tests are carried out, while pressing " the permeable road GB/T 25993-2010
Face brick and porous pavement plate " coefficient of permeability test is carried out, specific data are shown in Table 2.
Table 2
As shown in Table 2, according to 28 days compression strength >=20MPa of the water-permeable brick of existing standard requirements C20, coefficient of permeability >=
2.0×10-2Cm/s, pervious concrete prepared by the present invention is significantly more than C20 standard requirements.As it can be seen that product of the invention belongs to
Sharp waste, properties of product are able to satisfy respective country standard requirements.Further, since converter slag activity is higher than electric furnace slag,
Therefore the converter slag pervious concrete intensity of preparation is higher than electric furnace slag pervious concrete.
So the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of pervious concrete material, including siccative, water-reducing agent and water, the siccative by weight, including following components:
10-35 parts of cement；
First 15-45 parts of steel slag；
Second 30-65 parts of steel slag；
The additional amount of the water-reducing agent is appropriate；
The additional amount of the water is appropriate.
2. a kind of pervious concrete material according to claim 1, which is characterized in that including siccative, water-reducing agent and water, institute
State siccative by weight, including following components:
15-30 parts of cement；
First 20-40 parts of steel slag；
Second 35-60 parts of steel slag；
The additional amount of the water-reducing agent is the 0.1-2.0wt% of cement consumption；
The weight ratio of the water and cement consumption are as follows: 0.1-0.5:1.
3. a kind of pervious concrete material according to claim 1, which is characterized in that the cement is 42.5 grades of P.O general
Logical portland cement；The water-reducing agent is polycarboxylate water-reducer；The water is tap water.
4. a kind of pervious concrete material according to claim 1, which is characterized in that first steel slag and the second steel slag
It is converter slag；The performance condition of the converter slag are as follows: f-CaO (free calcium oxide)≤3wt%；Mohs' hardness >=6；Than
Focus on 3.0-3.6 tons/cubic meter.
5. a kind of pervious concrete material according to claim 4, which is characterized in that the converter slag is using preceding warp
Superheated vapor is handled 6-8 hours；The steam temperature is 180-220 DEG C.
6. a kind of pervious concrete material according to claim 1, which is characterized in that the partial size of first steel slag >=
3mm and < 7mm；The partial size of second steel slag is 7-15mm.
7. a kind of preparation method of pervious concrete, including the pervious concrete as described in claim 1-6 any claim
Material prepares pervious concrete.
8. a kind of preparation method of pervious concrete according to claim 7, which comprises the following steps:
1) by steel slag after Steam treatment, screening obtains the first steel slag and the second steel slag；
2) it by cement in siccative and the first steel slag, the second steel slag, is stirred after measuring by weight, sequentially adds water-reducing agent
It is stirred mixing with water, obtains the mixture of semi-drying；
3) mixture of semi-drying obtained by step 2) is placed on ground, carries out vibrating forming, strike off, receive light, maintenance, both obtains institute
State converter slag pervious concrete.
9. a kind of preparation method of pervious concrete according to claim 8, which comprises the following steps:
A1) time that each component is stirred mixing in the siccative is 30-40s；
A2 water-reducing agent is sequentially added described in) and water is stirred the time of mixing as 60-100s；
A3) time of the vibrating forming is vibration until the bleeding of mixture surface layer；
A4) curing time >=24 hour.
10. a kind of pervious concrete, the preparation method as described in claim 7-9 any claim is prepared.
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| CN110845193A (en) * | 2019-11-11 | 2020-02-28 | 东南大学 | High-strength steel slag pervious concrete and indoor forming process thereof |
| CN112374811A (en) * | 2020-11-09 | 2021-02-19 | 湛江宝钢新型建材科技有限公司 | Pervious concrete prepared from steel slag and preparation method and application thereof |
| CN116120000A (en) * | 2022-12-01 | 2023-05-16 | 上海中冶环境工程科技有限公司 | 3D printing material for steel slag concrete and preparation method and application thereof |
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Application publication date: 20190308 |