CN107324747B - Water permeable brick and preparation method thereof - Google Patents
Water permeable brick and preparation method thereof Download PDFInfo
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- CN107324747B CN107324747B CN201710631550.7A CN201710631550A CN107324747B CN 107324747 B CN107324747 B CN 107324747B CN 201710631550 A CN201710631550 A CN 201710631550A CN 107324747 B CN107324747 B CN 107324747B
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- 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
- E01C15/00—Pavings specially adapted for footpaths, sidewalks or cycle tracks
-
- 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
- E01C5/04—Pavings made of prefabricated single units made of bricks
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to the technical field of building materials, in particular to a novel water permeable brick and a preparation method thereof; the raw materials comprise the following components in parts by weight: 100-140 parts of industrial waste residues, 40-60 parts of municipal waste residues, 25-35 parts of desulfurized gypsum, 18-22 parts of modified bentonite, 35-45 parts of surfactant and 20-30 parts of adhesive; the invention effectively improves the pores of the brick body, achieves the aim of increasing the water permeability, has obvious water permeability effect, and the water permeability coefficient at 15 ℃ reaches 1.06 multiplied by 10‑ 2cm/s or more.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a water permeable brick and a preparation method thereof.
Background
At present, global energy and water resources are deficient, meanwhile, the desertification area is enlarged and sand blown frequently occurs, so that the living environment of human beings is increasingly severe, the living places of the urban residences are mainly surrounded by the ground surfaces of urban squares, commercial streets, sidewalks, community moving grounds, parking lots and the like which are paved by water-tight materials such as granite, marble, glazed bricks, cement, asphalt and the like, the hardened ground has great harm to the urban environment, the hardened ground completely prevents rainwater from directly permeating into the ground during raining, and the full-area water accumulation causes inconvenience for people to go out; precious water resources finally flow away along with the drainage pipeline, so that the burden of urban drainage facilities is increased; the large loss of rainwater causes the underground water level to be difficult to rise, the health of urban vegetation is directly influenced, surface plants in cities are difficult to grow normally, and the municipal greening burden is increased; the problem of drought and water shortage of cities is further aggravated by a great amount of loss of rainwater, the developed environment-friendly building material improves and beautifies human living environment, the main raw materials of water permeable bricks, water permeable pavements and other water permeable materials in the building material field in the market at present adopt ceramics or concrete, the ceramic water permeable bricks adopt a great amount of mineral soil resources, the environment is damaged due to the exploitation of the raw materials, the production process of the ceramic water permeable bricks is complex, and a great amount of energy is consumed when the ceramic base bricks are molded and sintered, so that the cost is high, the production efficiency is low, the environment-friendly investment is large, and the one-time investment scale is large; although the concrete permeable brick is low in cost, the existing concrete permeable brick has large particles on the surface (the particle diameter of aggregate particles is 3-6 mm generally), water permeates through large pores on the surface, the porosity is more than 20%, and the concrete permeable brick is easily blocked by dust, so that the high water permeability cannot be continuously maintained; but also has poor effect of filtering water due to larger gaps; meanwhile, the concrete permeable brick has the advantages of single color, rough surface, unattractive appearance, poor toughness and poor pressure resistance, and the existing high-molecular polymer permeable brick is difficult to popularize in a large area due to higher cost of raw materials such as resin and the like.
Researches show that the granularity of the granular material and the component proportion of the granular material and the powdery material are factors mainly influencing the water permeability of the water permeable brick, and the specific expression is as follows: the granularity of the granular materials is different, the water permeability of the water permeable bricks is different, the granularity is large, and the water permeability is good; the grain composition is different, and the water permeability is different from the strength and the forming performance of the brick and the water permeability after firing; the water permeable brick is formed by mixing granular materials and powdery materials with water, forming and firing. The particle material is a framework and is a main material, the powdery material is an auxiliary material and is composed of components such as a fusing agent, a pore-forming agent, a binding agent and the like, the reasonable matching of the components plays a key role in the forming performance, the drying performance, the firing performance and the product performance, the pore-forming agent is mainly organic matters or carbonates and is mainly used for improving the water permeability of the product, but the adding amount of the pore-forming agent can reduce the forming performance and the drying strength of the product, and some pore-forming agents can cause the product to generate black cores and other defects.
The water permeable brick is a new building decoration material, and is a key point of research at present due to excellent environmental protection performance, excellent service performance and good decoration effect of the water permeable brick, but due to the fact that the water permeable brick is researched hot in recent years, due to the fact that the water permeable brick is made of different materials, various preparation methods and the fact that the factors influencing the water permeability of the water permeable brick are not emphasized, the water permeability of the prepared water permeable brick is uneven, the water permeability of part of the water permeable brick is extremely low, the ordered development of the water permeable brick is seriously influenced, and meanwhile, a consumer cannot obtain the high-quality water permeable brick easily, so the raw materials of the traditional water permeable brick are selected scientifically and reasonably, the preparation method is improved scientifically and reasonably, the quality of the water permeable brick at present is improved, and the water permeable brick has important significance in the field of building materials.
Disclosure of Invention
The invention provides a water permeable brick and a preparation method thereof to solve the technical problems.
The method is realized by the following technical scheme:
a permeable brick comprises the following raw materials in parts by weight: 100-140 parts of industrial waste residues, 40-60 parts of municipal waste residues, 25-35 parts of desulfurized gypsum, 18-22 parts of modified bentonite, 35-45 parts of surfactant and 20-30 parts of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: weighing industrial waste residue, desulfurized gypsum and modified bentonite according to a formula, crushing, and then mixing with a surfactant and an adhesive to obtain a material 1;
(2) blank preparation: adding water into the material 1, stirring uniformly at a stirring speed of 320-380 r/min, putting into a mold, and performing compression molding to obtain a primary blank;
(3) and (3) secondary compaction: performing secondary pressing on the prepared primary blank to obtain a secondary blank body;
(4) and (5) maintenance: curing the prepared secondary blank at 175.5-178.5 ℃ for 8-12 h, reducing the temperature to 120-130 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) carrying out secondary curing on the green body cured in the step (4) to obtain the water permeable brick.
Preferably, the raw materials comprise the following components in parts by weight: 120 parts of industrial waste residues, 50 parts of municipal waste residues, 30 parts of desulfurized gypsum, 20 parts of modified bentonite, 40 parts of surfactant and 25 parts of adhesive.
The modified bentonite is prepared by crushing bentonite, sieving with a 80-100-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.15-0.18 mol/L, filtering after 30-40 min, soaking filter residues in a saline solution with the content of 6-8%, performing ultrasonic treatment at the frequency of 150-180 KHz for 20-30 min, performing secondary filtration, soaking the filter residues in a hydrochloric acid solution with the concentration of 0.08-0.12 mol/L, performing secondary filtration for 1-2 h, calcining the filter residues at the temperature of 500-550 ℃ for 1-2 h under the protection of nitrogen, and cooling.
The surfactant is any one of fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate and sodium lauryl sulfate.
The adhesive is prepared by mixing heavy calcium carbonate, asbestos powder and citric acid ester according to the proportion of 1-2: 0.6-0.8: 0.25 to 0.35 by mass ratio.
Before the industrial waste residue and the urban waste residue are used, the industrial waste residue and the urban waste residue recovered from a factory are soaked in a sodium hydroxide solution with the concentration of 0.12-0.18 mol/L respectively, and are filtered and dried respectively after being soaked for 2-3 hours at the temperature of 100-120 ℃.
The water permeable brick is crushed in the step (1) by crushing raw materials into particles with the particle size of 0.45-0.85 mm.
The pressing blank is pressed under 0.5-0.7 MPa, and the pressing time is 12-18 min.
The pressure of the secondary pressed compact is 0.9-1.1 MPa, and the pressing time is 6-8 min.
And in the secondary curing, the curing temperature is 60-80 ℃, the relative humidity is 85-95%, and the curing time is 26-30 h.
In conclusion, the beneficial effects of the invention are as follows: in the invention, industrial waste residues and municipal waste residues are used as raw materials, the pollution of the waste materials to the environment is reduced, the granularity of the raw materials is controlled, the good water permeability of the raw materials is effectively ensured, and reasonable proportioning is added in the proportioning processThe invention uses modified bentonite and desulfurized gypsum, through reasonable proportion, the pore space of the brick body is effectively improved, the purpose of increasing the water permeability is achieved, the water permeability effect of the invention is obvious, the water permeability coefficient reaches 1.06 multiplied by 10 under 15 DEG C-2cm/s or more.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
A permeable brick comprises the following raw materials in parts by weight: 100kg of industrial waste residue, 40 kg of urban waste residue, 25kg of desulfurized gypsum, 18 kg of modified bentonite, 35kg of fatty alcohol-polyoxyethylene ether sodium sulfate and 20kg of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: before proportioning, respectively soaking industrial waste residues and recycled municipal waste residues recovered from factories in a sodium hydroxide solution with the concentration of 0.12mol/L, soaking at 100 ℃ for 2-3 h, respectively filtering, drying, mixing with modified bentonite, crushing into particles with the particle size of 0.45mm, and then mixing with fatty alcohol polyoxyethylene ether sodium sulfate and an adhesive to obtain a material 1; the modified bentonite is prepared by crushing bentonite, sieving with a 80-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.15mol/L, filtering after 30min, soaking filter residue in a saline solution with the content of 6%, performing ultrasonic treatment for 20-30 min at the frequency of 150-180 KHz, performing secondary filtration, soaking the filter residue in a hydrochloric acid solution with the concentration of 0.08mol/L, performing secondary filtration for 1-2 h, calcining the filter residue for 1-2 h at 500 ℃ under the protection of nitrogen, and cooling; the adhesive is prepared by mixing ground calcium carbonate, asbestos powder and citric acid ester according to the proportion of 1: 0.6: 0.25 mass ratio;
(2) blank preparation: adding water into the material 1, stirring at a stirring speed of 320r/min, placing into a mold, pressing under 0.5MPa for 12min to obtain a primary blank;
(3) and (3) secondary compaction: pressing the prepared primary blank for 6min under the pressure of 0.9 MPa;
(4) and (5) maintenance: curing the prepared secondary blank at 175.5 ℃ for 8h, reducing the temperature to 120 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) curing the green body cured in the step (4) for 26-30 hours at the temperature of 60 ℃ under the environment with the relative humidity of 85% to obtain the water permeable brick.
Example 2
A permeable brick comprises the following raw materials in parts by weight: 140 kg of industrial waste residue, 60 kg of urban waste residue, 35kg of desulfurized gypsum, 22 kg of modified bentonite, 45 kg of fatty alcohol-polyoxyethylene ether ammonium sulfate and 30kg of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: before proportioning, respectively soaking industrial waste residues and recycled municipal waste residues recovered from factories in a sodium hydroxide solution with the concentration of 0.18mol/L, soaking for 2-3 h at 120 ℃, respectively filtering, drying, mixing with modified bentonite, crushing into particles with the particle size of 0.85mm, and then mixing with fatty alcohol polyoxyethylene ether ammonium sulfate and an adhesive to obtain a material 1; the modified bentonite is prepared by crushing bentonite, sieving with a 100-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.18mol/L, filtering after 40min, soaking filter residues in a saline solution with the content of 8%, carrying out ultrasonic treatment for 30min at the frequency of 180KHz, carrying out secondary filtration, soaking the filter residues in a hydrochloric acid solution with the concentration of 0.12mol/L, carrying out secondary filtration for 1-2 h, calcining the filter residues for 1-2 h at 550 ℃ under the protection of nitrogen, and cooling; the adhesive is prepared by mixing ground calcium carbonate, asbestos powder and citric acid ester according to the weight ratio of 2: 0.8: 0.35 by mass;
(2) blank preparation: adding water into the material 1, stirring at a stirring speed of 380r/min, placing into a mold, and pressing under 0.7MPa for 18min to obtain a primary blank;
(3) and (3) secondary compaction: pressing the prepared primary blank for 8min under the pressure of 1.1 MPa;
(4) and (5) maintenance: curing the prepared secondary blank at 178.5 ℃ for 12h, reducing the temperature to 130 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) curing the blank cured in the step (4) for 26-30 hours at the temperature of 80 ℃ under the environment with the relative humidity of 95% to obtain the water permeable brick.
Example 3
A permeable brick comprises the following raw materials in parts by weight: 120kg of industrial waste residue, 50 kg of urban waste residue, 30kg of desulfurized gypsum, 20kg of modified bentonite, 40 kg of surfactant and 25kg of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: before proportioning, respectively soaking industrial waste residues and urban waste residues recovered from factories in a sodium hydroxide solution with the concentration of 0.15mol/L, soaking at 110 ℃ for 2-3 h, respectively filtering, drying, mixing with modified bentonite, crushing into particles with the particle size of 0.65mm, and then mixing with sodium lauryl sulfate and an adhesive to obtain a material 1; the modified bentonite is prepared by crushing bentonite, sieving with a 90-mesh sieve, soaking in a 0.17mol/L hydrochloric acid solution, filtering after 35min, soaking filter residues in a 7% saline solution, performing ultrasonic treatment at a frequency of 1655KHz for 25min, performing secondary filtration, soaking the filter residues in a 0.1mol/L hydrochloric acid solution, performing secondary filtration for 1-2 h, calcining the filter residues at 530 ℃ for 1-2 h under the protection of nitrogen, and cooling; the adhesive is prepared by mixing ground calcium carbonate, asbestos powder and citric acid ester according to the weight ratio of 1.5: 0.7: 0.3 of mass ratio;
(2) blank preparation: adding water into the material 1, stirring at a stirring speed of 350r/min, placing into a mold, pressing under 0.6MPa for 15min to obtain a primary blank;
(3) and (3) secondary compaction: pressing the prepared primary blank for 7min under the pressure of 1 MPa;
(4) and (5) maintenance: curing the prepared secondary blank at 176 ℃ for 8-12 h, reducing the temperature to 125 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) curing the green body cured in the step (4) for 26-30 hours at the temperature of 70 ℃ under the environment with the relative humidity of 90% to obtain the water permeable brick.
Example 4
A permeable brick comprises the following raw materials in parts by weight: 140 kg of industrial waste residue, 40 kg of urban waste residue, 35kg of desulfurized gypsum, 18 kg of modified bentonite, 35kg of fatty alcohol-polyoxyethylene ether ammonium sulfate and 30kg of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: before proportioning, respectively soaking industrial waste residues and recycled municipal waste residues recovered from factories in a sodium hydroxide solution with the concentration of 0.18mol/L, soaking at 100 ℃ for 2-3 h, respectively filtering, drying, mixing with modified bentonite, crushing into particles with the particle size of 0.85mm, and then mixing with fatty alcohol polyoxyethylene ether ammonium sulfate and an adhesive to obtain a material 1; the modified bentonite is prepared by crushing bentonite, sieving with a 80-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.18mol/L, filtering after 30min, soaking filter residues in a saline solution with the content of 8%, carrying out ultrasonic treatment for 30min at the frequency of 150KHz, carrying out secondary filtration, soaking the filter residues in a hydrochloric acid solution with the concentration of 0.08mol/L, carrying out secondary filtration for 1-2 h, calcining the filter residues for 1-2 h at 550 ℃ under the protection of nitrogen, and cooling; the adhesive is prepared by mixing ground calcium carbonate, asbestos powder and citric acid ester according to the proportion of 1: 0.8: 0.25 mass ratio;
(2) blank preparation: adding water into the material 1, stirring at a stirring speed of 380r/min, placing into a mold, and pressing under 0.5MPa for 18min to obtain a primary blank;
(3) and (3) secondary compaction: pressing the prepared primary blank for 8min under the pressure of 0.9 MPa;
(4) and (5) maintenance: curing the prepared secondary blank at 178.5 ℃ for 12h, reducing the temperature to 120 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) curing the green body cured in the step (4) for 26-30 hours at the temperature of 80 ℃ under the environment with the relative humidity of 85% to obtain the water permeable brick.
Example 5
A permeable brick comprises the following raw materials in parts by weight: 140 kg of industrial waste residue, 60 kg of urban waste residue, 25kg of desulfurized gypsum, 18 kg of modified bentonite, 45 kg of fatty alcohol-polyoxyethylene ether sodium sulfate and 30kg of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: before proportioning, respectively soaking industrial waste residues and recycled municipal waste residues recovered from factories in a sodium hydroxide solution with the concentration of 0.12mol/L, soaking for 2-3 h at 120 ℃, respectively filtering, drying, mixing with modified bentonite, crushing into particles with the particle size of 0.45mm, and then mixing with fatty alcohol-polyoxyethylene ether sodium sulfate and an adhesive to obtain a material 1; the modified bentonite is prepared by crushing bentonite, sieving with a 100-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.15mol/L, filtering after 40min, soaking filter residues in a hydrochloric acid solution with the content of 6%, carrying out ultrasonic treatment for 20min at the frequency of 180KHz, carrying out secondary filtration, soaking the filter residues in a hydrochloric acid solution with the concentration of 0.08mol/L, carrying out secondary filtration for 1-2 h, calcining the filter residues for 1-2 h at 550 ℃ under the protection of nitrogen, and cooling; the adhesive is prepared by mixing ground calcium carbonate, asbestos powder and citric acid ester according to the weight ratio of 2: 0.8: 0.25 mass ratio;
(2) blank preparation: adding water into the material 1, stirring uniformly at a stirring speed of 380r/min, putting into a die, pressing under 0.5MPa for 12-18 min to obtain a primary blank;
(3) and (3) secondary compaction: pressing the prepared primary blank for 6min under the pressure of 0.9 MPa;
(4) and (5) maintenance: curing the prepared secondary blank at 178.5 ℃ for 12h, reducing the temperature to 130 ℃, preserving the heat for 1h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: and (5) curing the blank cured in the step (4) for 26-30 hours at the temperature of 80 ℃ under the environment with the relative humidity of 95% to obtain the water permeable brick.
Examples 6 to 10
On the basis of example 1, a water permeable brick was prepared, wherein the weight data of the raw material composition in examples 6 to 10 were as shown in table 1, and the other steps were the same as in example 1:
TABLE 1
The water permeable bricks prepared in examples 1-10 are further described with reference to JC/T945-2005 Water permeable brick industry Standard, and the results are shown in Table 2:
TABLE 2
Claims (3)
1. The water permeable brick is characterized by comprising the following raw materials in parts by weight: 100-140 parts of industrial waste residues, 40-60 parts of municipal waste residues, 25-35 parts of desulfurized gypsum, 18-22 parts of modified bentonite, 35-45 parts of surfactant and 20-30 parts of adhesive;
the preparation method of the water permeable brick comprises the following steps:
(1) preparing materials: weighing industrial waste residue, desulfurized gypsum and modified bentonite according to a formula, crushing, and then mixing with a surfactant and an adhesive to obtain a material 1;
(2) blank preparation: adding water into the material 1, stirring uniformly at a stirring speed of 320-380 r/min, putting into a mold, and performing compression molding to obtain a primary blank;
(3) and (3) secondary compaction: performing secondary pressing on the prepared primary blank to obtain a secondary blank body;
(4) and (5) maintenance: curing the prepared secondary blank at 175.5-178.5 ℃ for 8-12 h, reducing the temperature to 120-130 ℃, preserving the heat for 1-2 h, and curing at room temperature for 1-2 weeks;
(5) secondary curing: carrying out secondary curing on the green body cured in the step (4) to obtain the water permeable brick;
the modified bentonite is prepared by crushing bentonite, sieving with a 80-100-mesh sieve, soaking in a hydrochloric acid solution with the concentration of 0.15-0.18 mol/L, filtering after 30-40 min, soaking filter residues in a saline solution with the content of 6-8%, performing ultrasonic treatment at the frequency of 150-180 KHz for 20-30 min, performing secondary filtration, soaking the filter residues in a hydrochloric acid solution with the concentration of 0.08-0.12 mol/L, performing secondary filtration for 1-2 h, calcining the filter residues at the temperature of 500-550 ℃ for 1-2 h under the protection of nitrogen, and cooling;
the adhesive is prepared by mixing heavy calcium carbonate, asbestos powder and citric acid ester according to the proportion of 1-2: 0.6-0.8: mixing at a mass ratio of 0.25-0.35;
before the industrial waste residue and the urban waste residue are used, the industrial waste residue and the urban waste residue recovered from a factory are soaked in a sodium hydroxide solution with the concentration of 0.12-0.18 mol/L respectively, and are filtered and dried respectively after being soaked for 2-3 hours at the temperature of 100-120 ℃;
in the step (1), the raw materials are crushed into particles with the particle size of 0.45-0.85 mm; the surfactant is any one of fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate and sodium lauryl sulfate;
the pressing blank is pressed under 0.5-0.7 MPa, and the pressing time is 12-18 min;
the pressure of the secondary pressed blank is 0.9-1.1 MPa, and the pressing time is 6-8 min;
and performing secondary maintenance at the temperature of 60-80 ℃.
2. The water permeable brick of claim 1, wherein the raw materials comprise, in parts by weight: 120 parts of industrial waste residues, 50 parts of municipal waste residues, 30 parts of desulfurized gypsum, 20 parts of modified bentonite, 40 parts of surfactant and 25 parts of adhesive.
3. The water permeable brick of claim 1, wherein the secondary curing is carried out at a relative humidity of 85-95% for a curing time of 26-30 h.
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| WO2015156541A1 (en) * | 2014-04-10 | 2015-10-15 | 주식회사 폴리원 | Method for manufacturing soil brick having high strength and low absorption rate using unfiring forming method |
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| CN106348636B (en) * | 2016-08-19 | 2018-09-04 | 山东金艺园林股份有限公司 | A kind of water-permeable brick or pervious concrete impregnating agent and application |
| CN106747295B (en) * | 2017-01-16 | 2020-03-31 | 贵州兴贵恒远新型建材有限公司 | Anti-slip floor tile and preparation method thereof |
| CN106966696A (en) * | 2017-04-06 | 2017-07-21 | 合肥欧克斯新型建材有限公司 | Permeable pavement brick and its preparation technology prepared by a kind of utilization architecture sediment |
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