CN109384442A - A kind of cement combination permeable pavement brick and preparation method thereof - Google Patents
A kind of cement combination permeable pavement brick and preparation method thereof Download PDFInfo
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- CN109384442A CN109384442A CN201811354521.1A CN201811354521A CN109384442A CN 109384442 A CN109384442 A CN 109384442A CN 201811354521 A CN201811354521 A CN 201811354521A CN 109384442 A CN109384442 A CN 109384442A
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- 239000011449 brick Substances 0.000 title claims abstract description 68
- 239000004568 cement Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 74
- 239000002893 slag Substances 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 230000035699 permeability Effects 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 39
- 239000000203 mixture Substances 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 22
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 229920005646 polycarboxylate Polymers 0.000 claims description 5
- 239000008030 superplasticizer Substances 0.000 claims description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
- C04B28/08—Slag cements
- C04B28/082—Steelmaking slags; Converter slags
-
- 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
-
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building material technical fields, and in particular to a kind of cement combination permeable pavement brick and preparation method thereof；The present invention is using steel slag as cementitious material and aggregate, improve the adhesive property between cementitious material and aggregate, so that the two is combined together, structure is finer and close, the problem of can effectively reduce the hole of cement combination permeable pavement brick, improving the later strength retraction of cement combination permeable pavement brick.Embodiment the result shows that, the cement combination permeable pavement brick being prepared using above-mentioned material reaches 3.1MPa or more in 28 days tensile splitting strengths, and water permeability is preferable.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a cement-bonded water permeable pavement brick and a preparation method thereof.
Background
The water permeable bricks can be divided into two categories of sintered water permeable bricks and baking-free water permeable bricks according to production processes, and although the sintered water permeable bricks have high strength and good wear resistance, the sintered water permeable bricks have complex production process, need high-temperature calcination, large resource and energy consumption and high selling price of more than 200 RMB/m2. The baking-free type water permeable brick is divided into two basic types of a resin-combined water permeable brick and a cement-combined water permeable brick, and compared with the resin-combined water permeable brick, the cement-combined water permeable brick does not use an organic polymer, so that the production cost and the environmental protection performance are more advantageous, but the cement-combined water permeable brick has the problem of later strength shrinkage, and the popularization and the application of the water permeable brick are limited to a certain extent.
Disclosure of Invention
The invention aims to provide a cement-bonded water-permeable pavement brick and a preparation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a cement-bonded water permeable pavement brick which is prepared from the following raw materials in parts by mass: 14-22 parts of a cementing material, 74-82 parts of aggregate, 4-6 parts of water and an additive, wherein the additive accounts for 0.5-2% of the mass of the cementing material;
the cementing material comprises, by mass, 20-40% of steel slag powder, 30-50% of slag powder and the balance of cement;
the aggregate comprises fine steel slag and coarse steel slag; the grain size of the fine steel slag is [2.36mm, 4.75mm ], and the grain size of the coarse steel slag is (4.75mm, 16mm ].
Preferably, in the cementing material, the specific surface area of the steel slag powder is 350-450 m2Per kg, the specific surface area of the slag powder is 400-500 m2/kg。
Preferably, the admixture comprises a polycarboxylate superplasticizer.
Preferably, the mass ratio of water to the cementing material is 0.19-0.42: 1.
preferably, the porosity of the cement-bonded water permeable pavement brick is 11.9-15.6%, and the water permeability coefficient is 7.6 multiplied by 10-2～13.2×10-2cm/s。
The invention provides a preparation method of the cement-bonded water permeable pavement brick in the technical scheme, which comprises the following steps:
(1) mixing the cementing material and the aggregate to obtain a dry mixture;
(2) mixing the dry mixture obtained in the step (1) with an additive and part of water to obtain a wet mixture;
(3) and (3) mixing the wet mixed material obtained in the step (2) with the residual water, and sequentially pouring, vibrating, pressurizing, forming and maintaining the obtained mixed material to obtain the cement-bonded water permeable pavement brick.
Preferably, part of the water in the step (2) accounts for 80-85% of the total mass of the water.
Preferably, the frequency of the vibration and pressure molding in the step (3) is 50 +/-5 Hz, and the amplitude is 0.45-0.55 mm.
Preferably, the pressure of the vibration pressure molding in the step (3) is (4-10) × 103Pa, and the pressure maintaining time is 5-10 s.
Preferably, the curing temperature in the step (3) is 18-22 ℃, the humidity is 85-95%, and the curing time is 7-28 days.
According to the invention, the steel slag is used as the cementing material and the aggregate, so that the binding property between the cementing material and the aggregate is improved, the cementing material and the aggregate are integrated, the structure is more compact, the pores of the cement-bonded water-permeable pavement brick can be effectively reduced, and the problem of later strength shrinkage of the cement-bonded water-permeable pavement brick is solved. The results of the examples show that the splitting tensile strength of the cement-bonded water permeable pavement brick prepared by the materials in 28 days reaches more than 3.1MPa, and the water permeability is good.
Detailed Description
The invention provides a cement-bonded water permeable pavement brick which is prepared from the following raw materials in parts by mass: 14-22 parts of a cementing material, 74-82 parts of aggregate, 4-6 parts of water and an additive, wherein the additive accounts for 0.5-2% of the mass of the cementing material;
the cementing material comprises, by mass, 20-40% of steel slag powder, 30-50% of slag powder and the balance of cement;
the aggregate comprises fine steel slag and coarse steel slag, the particle size of the fine steel slag is [2.36mm, 4.75] mm, and the particle size of the coarse steel slag is (4.75mm, 16 mm).
The cement-bonded water permeable pavement brick comprises, by mass, 14-22 parts of a cementing material, preferably 15-20 parts of a cementing material, and more preferably 17-19 parts of a cementing material. The cementing material comprises, by mass, 20-40% of steel slag powder, 30-50% of slag powder and the balance of cement.
In the invention, the content of the steel slag powder in the cementing material is 20-40%, preferably 22-37%, more preferably 24-35%, and even more preferably 25-32%; the specific surface area of the steel slag powder is preferably 350-450 m2/kg, more preferably 375 to 425m2Per kg, more preferably 385 to 415m2In terms of/kg. The invention has no special requirement on the source of the steel slag powder, and preferably adopts converter hot smoldering steel slag to eliminate the influence of the stability of the steel slag.
In the invention, the content of the slag powder in the cementing material is 30-50%, preferably 35-45%, more preferably 37-43%, and even more preferably 40%; the specific surface area of the slag powder is preferably 400-500 m2/kg, preferably 415 to 485m2/kg, more preferably 425 to 475m2In terms of/kg. The invention has no special requirements on the source of the slag powder, and the solid waste materials well known to the technical personnel in the field can be adopted.
In the present invention, the cementitious material further comprises cement; the cement is preferably a cement having a strength of not less than PO 42.5. The invention has no special requirements on the content of the cement, and the total mass content of all the components in the cementing material can reach 100 percent.
According to the invention, the steel slag powder and the slag powder replace part of cement to form a composite cementing material, so that the binding force between the cementing material and the aggregate is improved, and the strength performance of the permeable pavement brick is further improved; and the use of the steel slag powder reduces the use amount of the slag powder and the cement, and is beneficial to reducing the production cost of the permeable pavement brick.
Based on the mass parts of the cementing material, the raw materials for preparing the cement-bonded water permeable pavement brick comprise 74-82 parts of aggregate, preferably 75-80 parts, and more preferably 76-78 parts. In the invention, the aggregate comprises fine steel slag and coarse steel slag, and the particle size of the fine steel slag is [2.36mm, 4.75mm ], preferably [2.40mm, 4.50mm ], and more preferably [2.50mm, 4.25mm ]; the particle size of the coarse steel slag is (4.75mm, 16 mm), preferably [4.80mm, 15mm ], more preferably [5mm, 13mm ], and more preferably [7mm, 10mm ].
The invention utilizes the graded steel slag as the aggregate, reduces the pores of the aggregate, is compatible with the cementing material, improves the bonding strength between the aggregate and the cementing material, and is beneficial to improving the strength performance of the cement-bonded permeable pavement brick.
Based on the mass parts of the cementing material, the raw materials for preparing the cement-bonded water permeable pavement brick comprise an additive, wherein the dosage of the additive accounts for 0.5-2% of the mass of the cementing material, preferably 0.7-1.8%, and more preferably 0.9-1.5%. In the invention, the additive preferably comprises a polycarboxylate high-efficiency water reducing agent, and the water reducing rate of the polycarboxylate high-efficiency water reducing agent is more than 30%, and the compressive strength ratio is more than 110%. In the present invention, the admixture is preferably a commercially available product of the company Cika.
The cement-bonded water permeable pavement brick is prepared from 4-6 parts of water by mass of the cementing material. The water-gel ratio is preferably 0.19-0.42, more preferably 0.20-0.40, still more preferably 0.22-0.37, and most preferably 0.25-0.30 in terms of the mass ratio of water to the cementing material.
The cement-bonded water permeable pavement brick prepared from the raw materials has excellent pore structure, water permeability and strength performance; cement bonding water permeationThe effective porosity of the pavement brick is 11.9-15.6%, and the water permeability coefficient is 7.6 multiplied by 10-2～13.2×10-2cm/s, the tensile strength reaches more than 2.2MPa in 7 days, and the splitting tensile strength reaches more than 3.1MPa in 28 days.
The invention also provides a preparation method of the cement-bonded water permeable pavement brick in the technical scheme, which comprises the following steps:
(1) mixing the cementing material and the aggregate to obtain a dry mixture;
(2) mixing the dry mixture obtained in the step (1) with an additive and part of water to obtain a wet mixture;
(3) and (3) mixing the wet mixed material obtained in the step (2) with the residual water, and sequentially pouring, vibrating, pressurizing, forming and maintaining the obtained mixed material to obtain the cement-bonded water permeable pavement brick.
According to the invention, the gelled material and the aggregate are mixed to obtain the dry mixture. In the invention, the cementing material is preferably prepared by uniformly mixing the steel slag powder and the slag powder and then uniformly mixing the mixture with the cement. The invention has no special requirements on the mixing mode of the cementing material and the aggregate, and adopts a mode which is well known by the technical personnel in the field. In the embodiment of the present invention, the above-mentioned mixing is preferably performed in a blender.
After the dry mixture is obtained, the dry mixture is mixed with the additive and part of water to obtain a wet mixture. In the present invention, the admixture and part of the water are preferably added to the dry mixture simultaneously, and the addition is preferably carried out under stirring. The invention has no special requirements on the specific implementation mode of stirring, and can uniformly mix all the components. In the invention, the part of water is preferably water in the raw materials for preparing the cement-bonded water-permeable pavement brick, and the part of water preferably accounts for 80-85% of the total amount of water, more preferably 81-84%, and even more preferably 82-83%.
After the wet mixed material is obtained, the wet mixed material is mixed with the rest water, and the obtained mixed material is poured, vibrated, pressurized, molded and maintained in sequence to obtain the cement-combined permeable pavement brick. In the invention, the total mass of the residual water and part of water is consistent with the mass of water in the preparation raw materials. The invention has no special requirements on the pouring mode of the mixed materials, and the method is known by the technical personnel in the field. According to the invention, the moisture in the preparation raw materials is preferably added twice, so that the mixing uniformity of the materials can be ensured, the pouring performance of the pouring material can be ensured, the forming performance of the pouring material is improved, and the obtained cement-bonded water permeable pavement brick has high strength performance and water permeability.
After pouring, the invention carries out vibration and pressurization molding on the poured material. In the invention, the pressure intensity of the vibration pressure forming is preferably (4-10) multiplied by 103Pa, more preferably (4.5-8). times.103Pa; the pressure maintaining time is preferably 5-10 s, more preferably 6-9 s, and even more preferably 7-8 s; the frequency is preferably 50 + -5 Hz, more preferably 50 + -3 Hz, and even more preferably 50 Hz; the amplitude is preferably 0.45 to 0.55mm, more preferably 0.47 to 0.53mm, still more preferably 0.48 to 0.52mm, and most preferably 0.50 mm. The invention is preferably molded under the above conditions, and the strength performance of the cement-bonded water permeable pavement brick can be improved on the basis of ensuring the porosity of the cement-bonded water permeable pavement brick.
After vibration and pressure molding, the invention maintains the molding material to obtain the cement-bonded water permeable pavement brick. In the invention, the curing temperature is preferably 18-22 ℃, and is further preferably 19-21 ℃; the humidity is preferably 85-95%, and is preferably 88-92%; the time is preferably 7 to 28 days.
For further illustration of the present invention, the concrete-bonded water permeable pavement brick and the preparation method thereof provided by the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
The use amount of the cementing material, the aggregate and the water is as follows in parts by mass: 19.0 parts, 76.4 parts and 4.6 parts; wherein,
the mass percentage of the cementing material is as follows: PO42.5R cement 40%, Bo's specific surface area 400m220% of/kg of steel slag powder and 40% of slag powder, wherein the slag powder is prepared by a vertical mill, and the performance of the vertical mill slag powder meets the S95 grade technical requirement in the GB/T18046-2017 Standard of granulated blast furnace slag powder used in cement, mortar and concrete;
the aggregate is 20% of fine steel slag (the grain diameter is 2.36 mm-4.75 mm) and 80% of coarse steel slag (the grain diameter is 4.75 mm-16 mm);
the admixture is a Seka ES-500WH early strength polycarboxylate superplasticizer, the water reducing rate is 35 percent, the compressive strength ratio is 120 percent, and the mixing amount is 1.25 percent of the mass of the cementing material.
Uniformly mixing the steel slag powder and the slag powder to obtain a composite admixture, and mixing the admixture with cement to obtain a cementing material; pouring the aggregate into a stirrer to be uniformly stirred, pouring the cementing material into the stirrer to be uniformly dry-stirred; adding most of water and all additives in the stirring process, and adjusting the working state of the mixture by using the residual water (about 1/6) to ensure that the mixture is uniform and a bright surface appears; adding the mixture into a mold, and placing the mold on a vibration table for molding under the vibration conditions: vibration frequency (50 +/-3) Hz, amplitude (0.45-0.55) mm, 4 multiplied by 10 of material layer surface pressurization3Pa, and the pressure maintaining time is 6 s; and (3) curing the mixture to a specified age under the conditions that the temperature is 20 +/-2 ℃ and the humidity is 90 +/-5% to obtain the cement-bonded water permeable pavement brick with the thickness of 60 mm.
It should be noted that when the cement permeable pavement brick is molded, the vibration frequency and the vibration amplitude have certain floating in the operation process of the equipment, and therefore, the frequency and the vibration amplitude parameters are expressed by range values.
Example 2
The mass parts of the cementing material, the aggregate and the water are respectively as follows: 16.5 parts, 79.5 parts and 4.0 parts; wherein, the cementing material comprises the following components: PO42.5R cement 40%, steel slag powder 20%, slag powder 40%;
the aggregate comprises the following components: 15% of fine aggregate and 85% of coarse aggregate; the particle sizes of the fine aggregate and the coarse aggregate were the same as in example 1;
the admixture is added into the cement mortar in the same way as the embodiment 1, and the adding amount is 1.25 percent of the mass of the cement mortar.
And uniformly mixing the steel slag powder and the slag powder to obtain a composite admixture, and mixing the admixture with cement to obtain the cementing material.
Pouring the aggregate into a stirrer, uniformly stirring, and then pouring the cementing material into a dry stirrer, and uniformly stirring; adding most of water and all additives in the stirring process, and adjusting the working state of the mixture by using the residual water (about 1/6) to ensure that the mixture is uniform and a bright surface appears; adding the new mixture into a mould, and placing the mould on a vibration table for forming, wherein the vibration conditions are as follows: vibration frequency (50 +/-3) Hz, amplitude (0.45-0.55) mm, and material layer surface pressurization of 5 multiplied by 103Pa, the pressure maintaining time is 8 s; and (3) curing the mixture to a specified age under the conditions that the temperature is 20 +/-2 ℃ and the humidity is 90 +/-5% to obtain the cement-bonded water permeable pavement brick with the thickness of 60 mm.
Example 3
The dosage of the cementing material, the aggregate and the water is respectively as follows: 14.5 parts, 82.0 parts and 3.5 parts; wherein, the cementing material comprises the following components: PO42.5R cement 40%, steel slag powder 20%, slag powder 40%;
the aggregate comprises the following components: 15% of fine aggregate and 85% of coarse aggregate; the particle sizes of the fine aggregate and the coarse aggregate were the same as in example 1;
the admixture was blended in the same amount as in example 1 to give a binder in an amount of 1.25% by mass.
And uniformly mixing the steel slag powder and the slag powder to obtain a composite admixture, and mixing the admixture with cement to obtain the cementing material.
Pouring the aggregate into a stirrer, uniformly stirring, and then pouring the cementing material into a dry stirrer, and uniformly stirring; adding most of water and all additives during stirringAdjusting the working state of the mixture by using residual water (about 1/6) to ensure that the mixture is uniform and bright; adding the new mixture into a mould, and placing the mould on a vibration table for forming, wherein the vibration conditions are as follows: the vibration frequency (50 +/-3) Hz and the amplitude (0.45-0.55) mm; 4 x 10 pressurization of the material layer surface3Pa, the pressure maintaining time is 8 s; and (3) curing the mixture to a specified age under the conditions that the temperature is 20 +/-2 ℃ and the humidity is 90 +/-5% to obtain the cement-bonded water permeable pavement brick with the thickness of 60 mm.
The performance of the cement-bonded water permeable pavement bricks obtained in examples 1-3 was tested according to the GB/T25993-2010 Standard permeable pavement bricks and permeable pavement slabs, and the results are shown in Table 1.
Table 1 examples 1-3 cement-bonded water-permeable pavement brick performance test results
The test results in the table 1 show that the cement-bonded water-permeable pavement bricks with different grades can be prepared by adjusting the mixing ratio parameters, the 7-day compressive strength of the cement-bonded water-permeable pavement bricks is more than 2.2MPa, the 28-day tensile strength of the cement-bonded water-permeable pavement bricks is more than 3.1MPa, and the problem of later-stage tensile strength shrinkage of the cement-bonded water-permeable pavement bricks is solved.
According to the embodiment, the steel slag aggregate has the gelling activity to improve the bonding property with the interface transition area of the hardened slurry, so that the steel slag aggregate and the hardened slurry are integrated into a whole, the structure is compact, the problem of later strength shrinkage of the cement-cement combined permeable pavement brick is solved, and the cement combined permeable pavement brick with higher strength and permeability coefficient is obtained.
In addition, the steel slag doping amount is more than 80%, so that the use amount of cement and natural aggregate is reduced, and remarkable social and environmental benefits are achieved; meanwhile, the utilization level of solid waste resources in the metallurgical industry can be obviously improved; the cement-bonded water permeable pavement brick prepared by the scheme provided by the invention has the advantages of high strength, good wear resistance, low production cost and the like.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.
Claims (10)
1. The cement-bonded water permeable pavement brick is prepared from the following raw materials in parts by mass: 14-22 parts of a cementing material, 74-82 parts of aggregate, 4-6 parts of water and an additive, wherein the additive accounts for 0.5-2% of the mass of the cementing material;
the cementing material comprises, by mass, 20-40% of steel slag powder, 30-50% of slag powder and the balance of cement;
the aggregate comprises fine steel slag and coarse steel slag; the grain size of the fine steel slag is [2.36mm, 4.75mm ], and the grain size of the coarse steel slag is (4.75mm, 16mm ].
2. The cement-bonded water permeable pavement brick as claimed in claim 1, wherein the specific surface area of the steel slag powder in the cementing material is 350-450 m2Per kg, the specific surface area of the slag powder is 400-500 m2/kg。
3. The cement-bonded water permeable pavement brick according to claim 1 or 2, wherein the admixture comprises a polycarboxylate superplasticizer.
4. The cement-bonded water permeable pavement brick as claimed in claim 1 or 2, wherein the mass ratio of water to cementitious material is 0.19-0.42: 1.
5. the cement-bonded water permeable pavement brick as claimed in claim 1 or 2, wherein the cement-bonded water permeable pavement brick has a porosity of 11.9 to 15.6% and a water permeability coefficient of 7.6 x 10-2～13.2×10-2cm/s。
6. A method for preparing the cement-bonded water permeable pavement brick as claimed in any one of claims 1 to 5, comprising the steps of:
(1) mixing the cementing material and the aggregate to obtain a dry mixture;
(2) mixing the dry mixture obtained in the step (1) with an additive and part of water to obtain a wet mixture;
(3) and (3) mixing the wet mixed material obtained in the step (2) with the residual water, and pouring, vibrating, pressurizing, forming and maintaining the obtained mixed material in sequence to obtain the cement-bonded water-permeable pavement brick.
7. The preparation method according to claim 6, wherein the part of water in the step (2) accounts for 80-85% of the total mass of water.
8. The method according to claim 6, wherein the frequency of the vibration press molding in the step (3) is 50 ± 5Hz, and the amplitude is 0.45 to 0.55 mm.
9. The method according to claim 6 or 8, wherein the pressure of the vibration press molding in the step (3) is (4 to 10) × 103Pa, and the pressure maintaining time is 5-10 s.
10. The method according to claim 6 or 8, wherein the curing in the step (3) is carried out at a temperature of 18 to 22 ℃ and a humidity of 85 to 95% for 7 to 28 days.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110041052A (en) * | 2019-05-31 | 2019-07-23 | 张华艳 | A kind of water-permeable brick and its manufacturing method of rapid infiltrated |
| CN110922163A (en) * | 2019-11-27 | 2020-03-27 | 广西净雨环保科技有限公司 | Process formula of environment-friendly ceramic product |
| CN111116122A (en) * | 2020-01-07 | 2020-05-08 | 唐山中陶纪元工程设计有限公司 | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick |
| CN111807788A (en) * | 2020-07-21 | 2020-10-23 | 赣州市建恒建筑材料有限公司 | Preparation method of inorganic binder sand-based water permeable brick and water permeable brick |
| CN112321247A (en) * | 2020-11-03 | 2021-02-05 | 中冶宝钢技术服务有限公司 | Pavement brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004292285A (en) * | 2003-03-28 | 2004-10-21 | Taiheiyo Cement Corp | Concrete |
| CN104310921A (en) * | 2014-10-12 | 2015-01-28 | 韶关学院 | Slag aggregate water permeable brick prepared from large mixing amount mineral admixtures and preparation method of slag aggregate water permeable brick |
| CN108147706A (en) * | 2018-02-08 | 2018-06-12 | 韶关学院 | A kind of cement base porous pavement material specific complex admixture and its application |
| CN108793852A (en) * | 2018-08-29 | 2018-11-13 | 云南中洲海绵城市建材有限公司 | A kind of mine steel slag ecological permeable pavement brick production technology |
-
2018
- 2018-11-14 CN CN201811354521.1A patent/CN109384442A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004292285A (en) * | 2003-03-28 | 2004-10-21 | Taiheiyo Cement Corp | Concrete |
| CN104310921A (en) * | 2014-10-12 | 2015-01-28 | 韶关学院 | Slag aggregate water permeable brick prepared from large mixing amount mineral admixtures and preparation method of slag aggregate water permeable brick |
| CN108147706A (en) * | 2018-02-08 | 2018-06-12 | 韶关学院 | A kind of cement base porous pavement material specific complex admixture and its application |
| CN108793852A (en) * | 2018-08-29 | 2018-11-13 | 云南中洲海绵城市建材有限公司 | A kind of mine steel slag ecological permeable pavement brick production technology |
Cited By (6)
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|---|---|---|---|---|
| CN110041052A (en) * | 2019-05-31 | 2019-07-23 | 张华艳 | A kind of water-permeable brick and its manufacturing method of rapid infiltrated |
| CN110922163A (en) * | 2019-11-27 | 2020-03-27 | 广西净雨环保科技有限公司 | Process formula of environment-friendly ceramic product |
| CN111116122A (en) * | 2020-01-07 | 2020-05-08 | 唐山中陶纪元工程设计有限公司 | Solid waste concrete stone, steel slag permeable brick based on solid waste concrete stone and preparation method of steel slag permeable brick |
| CN111807788A (en) * | 2020-07-21 | 2020-10-23 | 赣州市建恒建筑材料有限公司 | Preparation method of inorganic binder sand-based water permeable brick and water permeable brick |
| CN111807788B (en) * | 2020-07-21 | 2022-04-08 | 赣州市建恒建筑材料有限公司 | Preparation method of inorganic binder sand-based water permeable brick and water permeable brick |
| CN112321247A (en) * | 2020-11-03 | 2021-02-05 | 中冶宝钢技术服务有限公司 | Pavement brick and preparation method thereof |
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Application publication date: 20190226 |