CN112299781A - High-titanium blast furnace slag expanded bead water permeable brick and production method thereof - Google Patents
High-titanium blast furnace slag expanded bead water permeable brick and production method thereof Download PDFInfo
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- CN112299781A CN112299781A CN202011179828.XA CN202011179828A CN112299781A CN 112299781 A CN112299781 A CN 112299781A CN 202011179828 A CN202011179828 A CN 202011179828A CN 112299781 A CN112299781 A CN 112299781A
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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 high titanium blast furnace slag expanded bead water permeable brick and a production method thereof, wherein the water permeable brick comprises a substrate layer, an intermediate layer and a surface layer; the raw materials of the substrate layer comprise 5-8 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 20-35 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-25 wt% of cement, 8-12 wt% of mineral powder admixture, 10-20 wt% of broken stone and 10-30 wt% of water; the raw materials of the middle layer comprise 45-55 wt% of cement, 20-30 wt% of mineral powder admixture, 0.02-0.05 wt% of methyl cellulose and 15-32 wt% of water; the raw materials of the surface layer comprise 15-25 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 40-50 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-30 wt% of cement, 4-6 wt% of mineral powder admixture, 3-5 wt% of waste rubber and 5-15 wt% of water. The product is obtained by vibration molding of a die pressing die and finally demoulding and maintenance. The water permeable brick adopts lightweight hollow high titanium blast furnace slag expanded beads as main raw materials, has smaller volume density and larger water permeability coefficient, is convenient for transportation and construction, and has good compressive strength and strong wear resistance.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a high-titanium blast furnace slag expanded bead water permeable brick and a production method thereof.
Background
With the pace of urbanization construction becoming faster, the ecological environment of cities is under tremendous pressure. The earth surface of modern cities is gradually hardened and covered by water-blocking materials such as buildings, concrete and the like to form ecological artificial deserts, and the water-tight pavements bring great negative effects on the ecological environment of the cities. Therefore, how to realize environmental protection and harmonious development of economy and society in urban construction increasingly draws attention of people. The permeable pavement bricks are produced at the same time, have better water permeability and wear resistance, can ensure that precipitation permeates into lower soil through the permeable pavement bricks, replenish underground water resources of cities, and play a positive role in protecting the underground water resources.
The high titanium type blast furnace slag expanded bead is a novel material which is emitted in order to solve the problem of multiple utilization ways of blast furnace slag, the application range is relatively limited for years, and the high titanium type blast furnace slag expanded bead is expected to be applied to more fields according to the performance in order to be popularized and applied in multiple aspects as soon as possible.
Disclosure of Invention
The invention aims to: the high titanium type blast furnace slag expanded bead permeable brick is prepared by using waste high titanium type blast furnace slag resources generated by a blast furnace as expanded beads and is applied to the preparation of the permeable pavement brick, so that the permeable pavement brick has excellent properties of light weight, low construction strength, convenience in transportation, good permeable effect and the like.
The technical scheme adopted by the invention is as follows:
a high titanium blast furnace slag expanded bead permeable brick comprises a base material layer, a middle layer and a surface layer; the raw materials of the substrate layer comprise 5-8 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 20-35 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-25 wt% of cement, 8-12 wt% of mineral powder admixture, 10-20 wt% of broken stone and 10-30 wt% of water; the raw materials of the middle layer comprise 45-55 wt% of cement, 20-30 wt% of mineral powder admixture, 0.02-0.05 wt% of methyl cellulose and 15-32 wt% of water; the raw materials of the surface layer comprise 15-25 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 40-50 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-30 wt% of cement, 4-6 wt% of mineral powder admixture, 3-5 wt% of waste rubber and 5-15 wt% of water.
Further, the raw materials of the substrate layer comprise 6 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 25 wt% of fine-particle high-titanium blast furnace slag expanded beads, 20 wt% of cement, 10 wt% of mineral powder admixture, 15 wt% of crushed stone and 24 wt% of water; the raw materials of the middle layer comprise 50 wt% of cement, 25 wt% of mineral powder admixture, 0.04 wt% of methyl cellulose and 24.96 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 45 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15 wt% of cement, 5 wt% of mineral powder admixture, 5 wt% of waste rubber and 10 wt% of water.
Further, the particle size of the fine-particle high-titanium blast furnace slag expanded bead is 1-5mm, and the bulk density is 0.75-0.85g/cm3The cylinder pressure is greater than 0.8 MPa.
Further, the particle size of the coarse-particle high-titanium blast furnace slag expanded bead is 5-10mm, and the bulk density is 0.9-1g/cm3The cylinder pressure is more than 1.0 MPa.
Furthermore, the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007.
Furthermore, the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-.
Firstly, screening the high-titanium blast furnace slag expanded beads into two different particle sizes for use by a screening process, and detecting the related performance of the high-titanium blast furnace slag expanded beads; then uniformly mixing the substrate layer, the middle layer and the surface layer according to the proportion; then sequentially placing the materials into a mould for pressure vibration forming; finally, demoulding and maintaining are carried out according to the requirement to obtain the expanded bead permeable pavement brick.
The light expanded beads are used as main aggregates, so that the permeable pavement brick has the advantages of light weight, low construction strength, convenience in transportation and good water permeability compared with the common permeable pavement brick, and has wide popularization and application values. A small amount of broken stones are added into the substrate layer, so that the overall strength of the water permeable brick is enhanced under the condition of not increasing the weight, and the compression resistance is enhanced; a small amount of waste rubber particles are added into the surface layer, so that the wear resistance and the surface layer elasticity are effectively enhanced under the condition of keeping light weight, and the walking comfort of pedestrians on the road surface is improved; the middle layer is added with adhesive components, so that the substrate layer and the surface layer can be better combined together; and finally, stably forming the three materials in the pressurizing and vibrating process.
The production method of the high titanium type blast furnace slag expanded bead water permeable brick comprises the following steps;
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and performing pressure vibration molding;
c. and demolding the molded primary product, and maintaining for 25-30 days to obtain the product.
Furthermore, the mass ratio of the substrate layer material to the intermediate layer material to the surface layer material is 3-5:1: 2-3.
Further, the pressure during the vibration molding process is 0.4-0.6 MPa.
Further, the relative humidity of air in the moisture-keeping curing process is more than 90%.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the characteristics of the expanded beads made of the high titanium type blast furnace slag, the expanded beads are used as main aggregates to be applied to the permeable pavement brick according to a certain proportion, so that a novel high titanium type blast furnace slag expanded bead permeable pavement brick building material is obtained;
2. the invention prepares the waste resources of the high titanium blast furnace slag generated by the blast furnace into expanded beads which are applied to the novel permeable pavement brick, so that the novel permeable pavement brick has the excellent performances of light weight, low construction strength, convenient transportation, good permeable effect and the like;
3. the invention is molded at normal temperature, materials of all layers are mixed tightly, the performance is stable, sintering is not needed, and the invention is energy-saving and environment-friendly;
4. the water permeable brick has light weight, high compressive strength, high wear resistance and obvious water permeable effect;
5. the invention belongs to a green environment-friendly project and has good economic benefit and social benefit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The preferred embodiment of the invention provides a high titanium blast furnace slag expanded bead permeable brick, which comprises a base material layer, a middle layer and a surface layer; the raw materials of the substrate layer comprise 6 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 25 wt% of fine-particle high-titanium blast furnace slag expanded beads, 20 wt% of cement, 10 wt% of mineral powder admixture, 15 wt% of broken stone and 24 wt% of water; the raw materials of the middle layer comprise 50 wt% of cement, 25 wt% of mineral powder admixture, 0.04 wt% of methyl cellulose and 24.96 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 45 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15 wt% of cement, 5 wt% of mineral powder admixture, 5 wt% of waste rubber and 10 wt% of water.
Wherein the particle size of the fine-particle high-titanium blast furnace slag expanded bead is 1-5mm, and the bulk density is 0.75-0.85g/cm3The cylinder pressure strength is more than 0.8 Mpa; the particle size of the coarse-particle high-titanium blast furnace slag expanded bead is 5-10mm, and the bulk density is 0.9-1g/cm3The cylinder pressure strength is more than 1.0 Mpa; the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007; the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
The specific production steps are as follows:
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and vibrating under 0.5 Mpa; wherein the mass ratio of the substrate layer material to the intermediate layer material to the surface layer material is 4:1: 2;
c. demoulding the formed primary product, and maintaining for 28 days under the condition that the relative air humidity is more than 90 percent to obtain the product.
The water permeable brick prepared by the embodiment has the following relevant indexes:
example 2
The preferred embodiment of the invention provides a high titanium blast furnace slag expanded bead permeable brick, which comprises a base material layer, a middle layer and a surface layer; the raw materials of the substrate layer comprise 8 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 30 wt% of fine-particle high-titanium blast furnace slag expanded beads, 25 wt% of cement, 10 wt% of mineral powder admixture, 15 wt% of broken stone and 22 wt% of water; the raw materials of the middle layer comprise 45 wt% of cement, 25 wt% of mineral powder admixture, 0.03 wt% of methyl cellulose and 29.97 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 50 wt% of fine-particle high-titanium blast furnace slag expanded beads, 17 wt% of cement, 4 wt% of mineral powder admixture, 3 wt% of waste rubber and 6 wt% of water.
Wherein the particle size of the fine-particle high-titanium blast furnace slag expanded bead is 1-5mm, and the bulk density is 0.75-0.85g/cm3The cylinder pressure strength is more than 0.8 Mpa; the particle size of the coarse-particle high-titanium blast furnace slag expanded bead is 5-10mm, and the bulk density is 0.9-1g/cm3The cylinder pressure strength is more than 1.0 Mpa; the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007; the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
The specific production steps are as follows:
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and vibrating under 0.5 Mpa; wherein the mass ratio of the substrate layer material to the intermediate layer material to the surface layer material is 4:1: 3;
c. demoulding the formed primary product, and maintaining for 28 days under the condition that the relative air humidity is more than 90 percent to obtain the product.
The water permeable brick prepared by the embodiment has the following relevant indexes:
example 3
The preferred embodiment of the invention provides a high titanium blast furnace slag expanded bead permeable brick, which comprises a base material layer, a middle layer and a surface layer; the raw materials of the substrate layer comprise 7 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 30 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15 wt% of cement, 12 wt% of mineral powder admixture, 20 wt% of broken stone and 16 wt% of water; the raw materials of the middle layer comprise 55 wt% of cement, 25 wt% of mineral powder admixture, 0.05 wt% of methyl cellulose and 19.95 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 40 wt% of fine-particle high-titanium blast furnace slag expanded beads, 25 wt% of cement, 4 wt% of mineral powder admixture, 4 wt% of waste rubber and 7 wt% of water.
Wherein the particle size of the fine-particle high-titanium blast furnace slag expanded bead is 1-5mm, and the bulk density is 0.75-0.85g/cm3The cylinder pressure strength is more than 0.8 Mpa; the particle size of the coarse-particle high-titanium blast furnace slag expanded bead is 5-10mm, and the bulk density is 0.9-1g/cm3The cylinder pressure strength is more than 1.0 Mpa; the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007; the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
The specific production steps are as follows:
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and vibrating under 0.5 Mpa; wherein the mass ratio of the substrate layer material to the intermediate layer material to the surface layer material is 5:1: 2;
c. demoulding the formed primary product, and maintaining for 28 days under the condition that the relative air humidity is more than 90 percent to obtain the product.
The water permeable brick prepared by the embodiment has the following relevant indexes:
comparative example 1
The comparative example provides a high titanium blast furnace slag expanded bead permeable brick, which comprises a base material layer and a surface layer; the raw materials of the substrate layer comprise 7 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 30 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15 wt% of cement, 12 wt% of mineral powder admixture, 20 wt% of broken stone and 16 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 40 wt% of fine-particle high-titanium blast furnace slag expanded beads, 25 wt% of cement, 4 wt% of mineral powder admixture, 4 wt% of waste rubber and 7 wt% of water.
Wherein the particle size of the fine-particle high-titanium blast furnace slag expanded bead is 1-5mm, and the bulk density is 0.75-0.85g/cm3The cylinder pressure strength is more than 0.8 Mpa; the particle size of the coarse-particle high-titanium blast furnace slag expanded bead is 5-10mm, and the bulk density is 0.9-1g/cm3The cylinder pressure strength is more than 1.0 Mpa; the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007; the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
The specific production steps are as follows:
a. respectively and uniformly mixing the raw materials of the substrate layer and the raw materials of the surface layer;
b. placing the mixed bottom material layer material at the bottom of the mold, placing the surface material layer material above the middle material layer, and performing pressurized vibration molding at 0.5 Mpa; wherein the mass ratio of the substrate layer material to the surface layer material is 5: 2;
c. demoulding the formed primary product, and maintaining for 28 days under the condition that the relative air humidity is more than 90 percent to obtain the product.
The water permeable brick prepared by the embodiment has the following relevant indexes:
comparative example 2
The comparative example provides a high titanium type blast furnace slag permeable brick, which comprises a base material layer, an intermediate layer and a surface layer; the raw materials of the substrate layer comprise 7 wt% of conventional coarse aggregate, 30 wt% of conventional fine aggregate, 15 wt% of cement, 12 wt% of mineral powder admixture, 20 wt% of gravel and 16 wt% of water; the raw materials of the middle layer comprise 55 wt% of cement, 25 wt% of mineral powder admixture, 0.05 wt% of methyl cellulose and 19.95 wt% of water; the raw materials of the surface layer comprise 20 wt% of conventional coarse aggregate, 40 wt% of conventional fine aggregate, 25 wt% of cement, 4 wt% of mineral powder admixture, 4 wt% of waste rubber and 7 wt% of water.
Wherein, the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007; the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
The specific production steps are as follows:
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and vibrating under 0.5 Mpa; wherein the mass ratio of the substrate layer material to the intermediate layer material to the surface layer material is 5:1: 2;
c. demoulding the formed primary product, and maintaining for 28 days under the condition that the relative air humidity is more than 90 percent to obtain the product.
The water permeable brick prepared by the embodiment has the following relevant indexes:
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The high titanium blast furnace slag expanded bead water permeable brick is characterized by comprising a base material layer, a middle layer and a surface layer; the raw materials of the substrate layer comprise 5-8 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 20-35 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-25 wt% of cement, 8-12 wt% of mineral powder admixture, 10-20 wt% of broken stone and 10-30 wt% of water; the raw materials of the middle layer comprise 45-55 wt% of cement, 20-30 wt% of mineral powder admixture, 0.02-0.05 wt% of methyl cellulose and 15-32 wt% of water; the raw materials of the surface layer comprise 15-25 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 40-50 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15-30 wt% of cement, 4-6 wt% of mineral powder admixture, 3-5 wt% of waste rubber and 5-15 wt% of water.
2. The high titanium blast furnace slag expanded bead water permeable brick as claimed in claim 1, wherein the raw material of said base material layer comprises 6 wt% of coarse-grained high titanium blast furnace slag expanded beads, 25 wt% of fine-grained high titanium blast furnace slag expanded beads, 20 wt% of cement, 10 wt% of mineral powder admixture, 15 wt% of crushed stone, and 24 wt% of water; the raw materials of the middle layer comprise 50 wt% of cement, 25 wt% of mineral powder admixture, 0.04 wt% of methyl cellulose and 24.96 wt% of water; the raw materials of the surface layer comprise 20 wt% of coarse-particle high-titanium blast furnace slag expanded beads, 45 wt% of fine-particle high-titanium blast furnace slag expanded beads, 15 wt% of cement, 5 wt% of mineral powder admixture, 5 wt% of waste rubber and 10 wt% of water.
3. The high titanium type blast furnace slag expanded bead water permeable brick as claimed in claim 1 or 2, wherein the fine particle high titanium type blast furnace slag expanded bead has a particle size of 1 to 5mm and a bulk density of 0.75 to 0.85g/cm3The cylinder pressure is greater than 0.8 MPa.
4. The high titanium type blast furnace slag expanded bead water permeable brick as claimed in claim 1 or 2, wherein the coarse particle high titanium type blast furnace slag expanded bead has a particle size of 5 to 10mm and a bulk density of 0.9 to 1g/cm3The cylinder pressure is more than 1.0 MPa.
5. The high titanium blast furnace slag expanded bead water permeable brick according to claim 1 or 2, characterized in that the cement is ordinary portland cement, and the physicochemical index meets the requirement of 42.5-grade ordinary portland cement specified in GB/T175-2007.
6. The high titanium blast furnace slag expanded bead water permeable brick as claimed in claim 1 or 2, wherein the physicochemical index of the mineral powder admixture meets the requirement of the II-level mineral admixture specified in JG/T486-2015.
7. The method for producing the high titanium type blast furnace slag expanded bead water permeable brick as claimed in any one of claims 1 to 6, comprising the steps of;
a. respectively and uniformly mixing the substrate layer raw material, the middle layer raw material and the surface layer raw material;
b. placing the mixed bottom material layer at the bottom of the mold, placing the middle material layer above the bottom material layer, placing the surface material layer above the middle material layer, and performing pressure vibration molding;
c. and demolding the molded primary product, and maintaining for 25-30 days to obtain the product.
8. The production method of the high titanium type blast furnace slag expanded bead water permeable brick as claimed in claim 7, wherein the mass ratio of the base material layer material, the middle layer material and the surface layer material is 3-5:1: 2-3.
9. The method for producing the high titanium type blast furnace slag expanded bead water permeable brick as claimed in claim 7, wherein the pressure of the vibration molding process is 0.4 to 0.6 Mpa.
10. The method for producing the high titanium type blast furnace slag expanded bead water permeable brick as claimed in claim 7, wherein the relative humidity of air in the moisture retention curing process is more than 90%.
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