CN109020344B - Concrete sand-containing water permeable brick core layer and preparation method thereof - Google Patents

Concrete sand-containing water permeable brick core layer and preparation method thereof Download PDF

Info

Publication number
CN109020344B
CN109020344B CN201811121436.0A CN201811121436A CN109020344B CN 109020344 B CN109020344 B CN 109020344B CN 201811121436 A CN201811121436 A CN 201811121436A CN 109020344 B CN109020344 B CN 109020344B
Authority
CN
China
Prior art keywords
core layer
sand
cement
weight
permeable brick
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811121436.0A
Other languages
Chinese (zh)
Other versions
CN109020344A (en
Inventor
颜成华
颜井意
颜景凯
江森利
王春祥
宗钟凌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lianyungang Dongpu Building Industrial Development Co ltd
Original Assignee
Lianyungang Dongpu Building Industrial Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lianyungang Dongpu Building Industrial Development Co ltd filed Critical Lianyungang Dongpu Building Industrial Development Co ltd
Priority to CN201811121436.0A priority Critical patent/CN109020344B/en
Publication of CN109020344A publication Critical patent/CN109020344A/en
Application granted granted Critical
Publication of CN109020344B publication Critical patent/CN109020344B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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

Abstract

The invention provides a concrete sand-containing water permeable brick core layer and a preparation method thereof, wherein the concrete sand-containing water permeable brick core layer comprises the following steps: cement, crushed stone 4-8 times of the weight of the cement, and sand 8-15% of the weight of the crushed stone; wherein the cement is 42.5-52.5. According to the invention, the high-grade high-strength No. 42.5-52.5 cement serving as the cementing material is adopted, and the sand doping amount is adjusted to the invalid channel amount of the cement and the broken stones, so that the water permeability of the sand-containing water permeable brick core layer is not influenced, the compactness of the base layer can be improved, the porosity is reduced, and the strength of the concrete sand-containing water permeable brick core layer is greatly improved.

Description

Concrete sand-containing water permeable brick core layer and preparation method thereof
Technical Field
The invention belongs to the technical field of permeable bricks, and particularly relates to a concrete sand-containing permeable brick core layer and a preparation method thereof.
Background
The water permeable brick (water permeable brick) is a road surface brick with strong water absorption function, and when the brick body is fully absorbed with water, the water can be discharged to the ground. For urban ground, the water permeable brick is used for solving the problem of urban ground surface hardening, quickly absorbing water and draining water on urban road surfaces and keeping the road surface shape.
The core layer of the existing permeable brick is mainly prepared from broken stones and cement, and sand can reduce the permeability to a certain degree, so that sand is not added during preparation for pursuing high permeability, and the core layer prepared in the way becomes a loose product and has low strength.
In a word, the existing water permeable brick does not contain sand in the raw material formula, only comprises broken stones and cement, and has low strength although a certain water permeable effect can be achieved.
Disclosure of Invention
The invention provides a concrete sand-containing water permeable brick core layer and a preparation method thereof, aiming at solving the problem that the existing water permeable brick has low strength although a certain water permeable effect can be achieved because the raw material formula does not contain sand, only crushed stone and cement are contained.
In order to solve the problems, the invention provides a concrete sand-containing permeable brick core layer, which comprises the following components in parts by weight:
cement, crushed stone 4-8 times of the weight of the cement, and sand 8-15% of the weight of the crushed stone;
wherein the cement is 42.5-52.5.
Preferably, the cement water reducing agent also comprises 0.5-2% of carboxylic acid water reducing agent in parts by weight of cement.
Preferably, the first and second electrodes are formed of a metal,
the weight portion of the broken stone is 6 times of that of the cement;
the weight portion of the sand is 10 percent of the broken stone;
the weight portion of the carboxylic acid water reducing agent is 1% of the cement.
Preferably, the first and second electrodes are formed of a metal,
the particle size of the broken stone is 0.3-1 cm;
the sand is yellow sand or machine sand, and the particle size is 2-2.3 mm.
Preferably, the first and second electrodes are formed of a metal,
cement number 52.5;
the crushed stone comprises 40% of crushed stone with a particle size of 0.3-0.5cm and 60% of crushed stone with a particle size of 0.5-1 cm.
Preferably, quartz sand, ceramsite and emulsifier are also included; the weight portions are respectively as follows:
the weight portion of the quartz sand is 8-10% of the weight portion of the broken stone;
the weight portion of the ceramsite is 8-10% of the weight portion of the broken stone;
the weight portion of the emulsifier is 0.2-0.5% of the weight portion of the cement.
In addition, in order to solve the above problems, the invention also provides a preparation method of the concrete sand-containing water permeable brick core layer, which comprises the following steps:
step 1, taking cement, crushed stone 4-8 times of the weight of the cement and sand 8-15% of the weight of the crushed stone as raw materials, feeding and stirring to obtain a mixed core material;
step 2, filling the mixed core material into a core layer die to obtain a material to be shaped;
and 3, vibrating and pressurizing the material to be shaped to obtain the material to be shaped.
Preferably, in the step 1, the stirring time for feeding and stirring the raw materials is 5 minutes.
Preferably, in step 3, the vibratory pressing includes:
vibrating the material to be molded at a vibration frequency of 3800 times/second and at 150KN/m2Pressurizing under the pressure of (2), and vibrating and pressurizing the sizing material.
The invention provides a concrete sand-containing water permeable brick core layer and a preparation method thereof, wherein the concrete sand-containing water permeable brick core layer comprises: cement, crushed stone 4-8 times of the weight of the cement, and sand 8-15% of the weight of the crushed stone, wherein the cement is 42.5-52.5. According to the invention, the high-grade high-strength No. 42.5-52.5 cement serving as the cementing material is adopted, and the sand doping amount is adjusted to the invalid channel amount of the cement and the broken stones, so that the water permeability of the sand-containing water permeable brick core layer is not influenced, the compactness of the base layer can be improved, the porosity is reduced, and the strength of the concrete sand-containing water permeable brick core layer is greatly improved.
Description of the drawings:
it is to be understood that the following drawings illustrate only certain embodiments of this application and are therefore not to be considered limiting of scope, for those skilled in the art will appreciate that other related drawings may be derived therefrom without inventive faculty.
FIG. 1 is a schematic structural view of a concrete sand-containing water permeable brick core layer of the invention.
The reference numbers illustrate:
1-concrete sand-containing permeable brick core layer; 11-an inner core layer; 12-outer surrounding core layer
Detailed Description
The technical solution of the present invention is further described in detail by way of the following specific embodiments, but the present invention is not limited thereto, and any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.
The invention provides a concrete sand-containing water permeable brick core layer which comprises the following components in parts by weight:
cement, crushed stone 4-8 times of the weight of the cement, and sand 8-15% of the weight of the crushed stone;
wherein the cement is 42.5-52.5.
In the above, the reference numeral of cement is an index of "strength" of cement. The strength of cement is the strength of a unit area, and refers to the firmness degree of cement after coagulation and hardening after being mixed with water (the strength of cement is related to factors such as mineral components forming the cement, the fineness of particles, the temperature and humidity during hardening, the proportion of water in the cement, and the like). The strength of cement is an index for determining the grade of cement and is also a main basis for selecting cement.
The cement is a gel material and is added to play a role in bonding and maintaining strength when the concrete sand-containing permeable brick core layer is prepared.
It should be noted that, in the brick core layer, after the raw materials are mixed, different raw materials have different particle sizes, and after the raw materials with different particle sizes are mixed together, gaps with different sizes can be formed, and theoretically, the gaps can form effective channels and ineffective channels. Wherein, the effective channel is a channel which can effectively ventilate and permeate water and is formed in the brick core layer after being formed; the invalid channel is a gap which is formed in a certain space after the raw materials with different grain sizes in the brick core layer are combined and cannot completely ventilate and permeate water, namely a gap which cannot realize the water seepage function among the raw materials with different grain sizes; each effective channel in the brick core layer can help the masonry to permeate water and ventilate, increase the rate of permeating water, and the ineffective channel, then the material of accessible less particle diameter is filled up to reach the purpose that improves the intensity of brick core layer itself.
In the brick core layer, if the addition amount of the cementing material is too much, all pores in the brick core layer can be filled up to a certain extent, so that effective channels for water and air permeation are greatly reduced, and the water permeability of the finally obtained product is low. In the prepared brick core layer, products with certain strength and certain water permeability have certain equivalent gel amount, and the amount exceeding the equivalent gel amount is the residual gel amount.
In the raw materials, if the adding amount of sand is increased, the water permeation effect can be reduced, effective channels are blocked, and when the sand doping amount is just equal to the invalid channels of cement and stones, the effects of not influencing the water permeation rate of products, improving the compactness of a base layer and reducing the porosity can be achieved.
In this embodiment, based on previous research, it is found that by using high-strength high-grade cement, i.e., cement 42.5 to cement 52.5, the amount of remaining gel as a gel material can be reduced while maintaining the strength of the brick core layer, and a certain amount of sand is doped at the same time, so that the porosity of the core layer is reduced, and the strength of the brick core layer is improved.
In the embodiment, the cement which is high in grade and strength and takes No. 42.5-52.5 is adopted as the cementing material, and the sand doping amount is adjusted to the invalid channel amount of the cement and the broken stones, so that the water permeability of the sand-containing water permeable brick core layer is not influenced, the compactness of the base layer can be improved, the porosity is reduced, and the strength of the concrete sand-containing water permeable brick core layer is greatly improved.
Preferably, the cement water reducing agent also comprises 0.5-2% of carboxylic acid water reducing agent in parts by weight of cement.
The water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of maintaining the slump constant of concrete basically. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the dispersion effect on cement particles is achieved, the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved.
Among them, the carboxylic acid water reducing agent, also called polycarboxylate water reducing agent, is a high performance water reducing agent, is a cement dispersant in cement concrete application.
Preferably, the first and second electrodes are formed of a metal,
the weight portion of the broken stone is 6 times of that of the cement;
the weight portion of the sand is 10 percent of the broken stone;
the weight portion of the carboxylic acid water reducing agent is 1% of the cement.
Experiments prove that under the condition of a certain cement grade, different crushed stone amounts and sand mixing amounts can be selected, wherein the cement can comprise the following raw materials in parts by weight:
1 part of cement;
6 parts of crushed stone;
0.6 part of sand;
and 0.001 part of carboxylic acid water reducing agent.
Through the raw material proportion, the sand doping amount is equivalent to the invalid channel amount to a certain extent, the high-grade cement reduces the gel surplus, and a large number of effective channels are reserved, so that the water permeability of the brick core layer is improved on the premise of ensuring the strength of the brick core layer.
Preferably, the first and second electrodes are formed of a metal,
the particle size of the broken stone is 0.3-1 cm;
the sand is yellow sand or machine sand, and the particle size is 2-2.3 mm.
Preferably, the first and second electrodes are formed of a metal,
cement number 52.5;
the crushed stone comprises 40% of crushed stone with a particle size of 0.3-0.5cm and 60% of crushed stone with a particle size of 0.5-1 cm.
The crushed stone is a mixture of crushed stones with different particle sizes, wherein the crushed stone can comprise two particle sizes, namely 0.3-0.5cm and 0.5-1cm, and respectively accounts for 40% and 60% of the mixture.
Preferably, quartz sand, ceramsite and emulsifier are also included; the weight portions are respectively as follows:
the weight portion of the quartz sand is 8-10% of the weight portion of the broken stone;
the weight portion of the ceramsite is 8-10% of the weight portion of the broken stone;
the weight portion of the emulsifier is 0.2-0.5% of the weight portion of the cement.
The quartz sand and the ceramsite can be called as suspended semi-flowing liquid through the emulsifier, and the strength of the brick core layer can be increased on the premise that the water permeability is ensured and an effective channel is not blocked after the brick is formed.
In addition, referring to fig. 1, the present embodiment provides a concrete sand-containing permeable brick core layer, which is a multilayer laminated structure arranged from outside to inside, and includes an inner core layer disposed at the center and an outer surrounding core layer disposed at the periphery of the inner core layer; wherein the composition of the outer surrounding core layer may comprise: cement, 6 times of crushed stone in parts by weight of the cement, and 10% of sand in parts by weight of the crushed stone; cement number 52.5; the particle size of the broken stone is 0.3-1 cm; the sand is yellow sand or machine sand, and the particle size is 2-2.3 mm; the crushed stone comprises 40% of crushed stone with a particle size of 0.3-0.5cm and 60% of crushed stone with a particle size of 0.5-1 cm. And the weight part of the quartz sand is 8-10% of the weight part of the broken stone; the weight portion of the ceramsite is 8-10% of the weight portion of the broken stone; the weight portion of the emulsifier is 0.2-0.5% of the weight portion of the cement.
The inner core layer in this embodiment includes the following components:
the diatomite accounts for 10-15% of the weight of the broken stone;
the bentonite accounts for 10-30% of the weight of the crushed stones;
the weight portion of the polyamide is 1-1.5 times of the weight portion of the macadam.
The diatomite and the bentonite have strong adsorption capacity, and the materials of the diatomite and the bentonite have a large number of micropores and have strong water and air permeability. Through adding diatomaceous earth and bentonite, can have certain adsorption efficiency under the prerequisite that the brick core layer keeps the water permeability for in certain special occasion, play certain adsorption to the organic harmful substance that remains in the air, in order to reach the purpose of air-purifying. In addition, a certain amount of active carbon can be added into the raw materials, the particle size of the active carbon can be equal to that of the sand material, the dosage of the active carbon can be equal to that of the diatomite, the adsorption performance of the active carbon is fully utilized, and the air purification effect can be further improved.
In the above, polyamide (PA, commonly called nylon), which contains many repeating amide groups in the main chain, is called nylon when used as a plastic, and is called nylon when used as a synthetic fiber, is obtained from a diamine and a dibasic acid, and may be synthesized from an omega-amino acid or a cyclic lactam. According to the difference of carbon atom number in diamine and diacid or amino acid, a plurality of different polyamides can be prepared. In this example, polyamide-6 was used as a raw material.
Polyamide-6 has a very high coefficient of thermal expansion, up to 110--6and/K. By utilizing the thermal expansion performance of the material, the more sensitive effects of expansion with heat and contraction with cold are achieved. Specifically, in the inner core layer of the brick core layer, after being formed by polyamide-6, it is prepared as soft reticulated polyamide-6, which may have a large amount of reticulated structure having micropores. On one hand, the net can be empty, so that the adsorption and permeation effects on water flow and liquid are realized, and the temperature can be changed along with the temperature. Specifically, for example, when raining, a large amount of rainwater and running water penetrate into the water permeable brick, and part of water enters the water permeable brick through the inner core layer and is kept in the water permeable brick, when sunlight irradiates and the air temperature rises, the inner core layer in the brick is subjected to thermal expansion, the micropores of all the soft reticular polyamide materials are opened and enlarged, the evaporation speed of the internal liquid can be increased, so that the internal liquid is rapidly evaporated to reach a dry state, namely, the brick core layer can selectively expand or contract the soft reticular polyamide in the brick core layer along with the change of the temperature, the internal water can be rapidly evaporated at the moment that the temperature is higher when the evaporation condition is better, and the influence on the service life and the quality of the water permeable brick caused by excessive water retention can be prevented. In addition, the soft reticular polyamide material has certain toughness and can play a certain supporting role to a certain extent so as to achieve the purpose of increasing the strength of the brick core layer.
In addition, in order to solve the above problems, the invention also provides a preparation method of the concrete sand-containing water permeable brick core layer, which comprises the following steps:
step 1, taking cement, crushed stone 4-8 times of the weight of the cement and sand 8-15% of the weight of the crushed stone as raw materials, feeding and stirring to obtain a mixed core material;
step 2, filling the mixed core material into a core layer die to obtain a material to be shaped;
and 3, vibrating and pressurizing the material to be shaped to obtain the material to be shaped.
Preferably, in the step 1, the stirring time for feeding and stirring the raw materials is 5 minutes.
Preferably, in step 3, the vibratory pressing includes:
vibrating the material to be molded at a vibration frequency of 3800 times/second and at 150KN/m2Pressurizing under the pressure of (2), and vibrating and pressurizing the sizing material.
In addition, the step 1-3 is an outer surrounding core layer of the prepared concrete sand-containing water permeable brick core layer, namely an outer surrounding core layer at the periphery of the inner core layer in a multilayer laminated structure arranged from outside to inside; the separate preparation of the core layer in the center is also needed, and specifically comprises the following steps:
step 4, taking 10-15% of diatomite, 10-30% of bentonite and 1-1.5 times of polyamide, and stirring and mixing the diatomite, the bentonite and the polyamide for 15 minutes to obtain an inner core mixture;
step 5, continuously shearing and stretching the mixed inner core mixture in a vacuum state to form a multi-layer composite soft reticular polyamide mixed film;
step 6, placing the soft reticular polyamide mixed membrane into a mould, and vibrating the raw material in the mould at a vibration frequency of 3800 times/second and 150KN/m2And pressurizing under the pressure of the pressure to obtain the inner core layer.
And 7, placing the inner core layer in the middle, and coating the outer surrounding core layer on the upper side and the lower side of the inner core layer to form the concrete sand-containing permeable brick core layer with a multilayer laminated structure arranged from outside to inside.
In addition, after the preparation of the concrete sand-containing water permeable brick core layer is finished, a surface layer and the whole water permeable brick are required to be prepared, and the method specifically comprises the following steps:
step 8, adding cement, sand, water and pigment in the fabric into a fabric stirrer according to the fabric proportion and stirring for 5 minutes by using the other stirrer while preparing the concrete sand-containing water permeable brick core layer;
step 9, conveying the materials to a material storage bin of a brick press by using a belt, and placing the materials in the material storage bin into a mold after the core materials are pressed by a press head of the brick press for the first time;
step 10, covering the prepared concrete sand-containing water permeable brick core layer with the obtained fabric, and pressing the fabric layer by using a brick press under the pressure of 3800 vibration frequency of 150 kN/square meter, so that the fabric layer and the core layer are combined together to complete the pressing process.
And 11, conveying the pressed bricks into a steam curing kiln for curing through conveying equipment, standing for 40 minutes in the kiln, heating steam to 80 ℃, keeping the temperature for 4 hours, cooling for 2 hours, discharging the products out of the kiln, conveying the products to a production line by a conveying vehicle for stacking, and then packaging and warehousing.
In order to facilitate understanding of the present invention, the following embodiments are provided to further illustrate the technical solutions of the present invention. The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Component formulations for concrete sand-containing water permeable brick core layer provided in table 1 and examples 1-6
Figure BDA0001811294910000101
Figure BDA0001811294910000111
Examples 1-3 procedure for preparation of core layer of brick:
s1, taking cement, broken stone, sand, a carboxylic acid water reducing agent, quartz sand, ceramsite and an emulsifier as raw materials, feeding and stirring for 5 minutes to obtain a mixed core material;
s2, filling the mixed core material into a core layer die to obtain a material to be shaped;
s3, vibrating and pressurizing the material to be shaped, vibrating the material to be shaped at a vibration frequency of 3800 times/second and at the same time 150KN/m2Pressurizing under the pressure of (2), and vibrating and pressurizing the sizing material. And (5) obtaining the product.
Procedure for preparation of core layer of brick in examples 4-6:
s4, taking diatomite, bentonite and polyamide according to the raw material formula in each example in the table 1, and stirring and mixing for 15 minutes by a stirrer to obtain an inner core mixture;
s5, continuously shearing and stretching the mixed inner core mixture in a vacuum state to form a multi-layer composite soft reticular polyamide mixed film;
s6, placing the soft reticular polyamide mixed film into a mould, and vibrating the raw material in the mould at a vibration frequency of 3800 times/second and at a vibration frequency of 150KN/m2Pressurizing under the pressure of the pressure to obtain an inner core layer;
and S7, placing the inner core layer in the middle, and coating the outer surrounding core layer (the outer surrounding core layer finally obtained in the step S3) on the upper side and the lower side of the inner core layer to form the concrete sand-containing water permeable brick core layer with a multilayer laminated structure arranged from outside to inside.
After obtaining the concrete sand-containing permeable brick core layer in examples 1-6, the concrete sand-containing permeable brick core layer is prepared by the following steps: (same process, same surface layer material)
Further, the preparation of the water permeable bricks of the concrete sand-containing water permeable brick core layer obtained in the embodiments 1 to 6 is continued, specifically, the method further comprises the following steps:
s8, adding cement, sand, water and pigment in the fabric into the fabric stirrer according to the fabric proportion and stirring for 5 minutes by using another stirrer while preparing the concrete sand-containing permeable brick core layer;
s9, conveying the materials to a material storage bin of a brick press by a belt, and placing the materials in the material storage bin into a mold after the core materials are pressed by a brick press head for the first time;
s10, covering the prepared sand-containing water permeable concrete brick core layer with the obtained fabric, and pressing the fabric layer by a brick press under the pressure of 3800 vibration frequency of 150 kN/square meter, so that the fabric layer and the core layer are combined together to complete the pressing process, thereby obtaining the sand-containing water permeable concrete brick.
Example 1:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 1:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 2:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 3:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 4:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 5:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Example 6:
the concrete sand-containing water permeable brick is prepared by the component formula in the table 1, the concrete sand-containing water permeable brick core layer and the preparation method of the concrete sand-containing water permeable brick.
Note that the cement used in examples 1-6 above is designated 52.5.
Comparative experiment:
for the concrete sand-containing water permeable bricks prepared in examples 1-6, performance tests were performed according to the JC/T945-:
table 2, examples 1-6 and comparative examples Performance testing
Figure BDA0001811294910000131
Figure BDA0001811294910000141
Summary of the experiments:
for the concrete sand-containing water permeable bricks prepared in examples 1-6, performance tests were performed according to the JC/T945-. In the embodiments 1 to 6 of the invention, the high-grade and high-strength No. 52.5 cement serving as the cementing material is adopted, and the sand doping amount is adjusted to the invalid channel amount of the cement and the broken stones, so that the water permeability of the sand-containing water permeable brick core layer is not influenced, the compactness of the base layer can be improved, the porosity is reduced, and the strength of the concrete sand-containing water permeable brick core layer is greatly improved.

Claims (7)

1. The concrete sand-containing permeable brick core layer is characterized by comprising an inner core layer arranged in the center and an outer surrounding core layer arranged at the periphery of the inner core layer;
the outer surrounding core layer comprises the following components in parts by weight: cement, crushed stone 4-8 times of the weight of the cement, sand 8-15% of the weight of the crushed stone, a carboxylic acid water reducing agent 0.5-2% of the weight of the cement, quartz sand 8-10% of the weight of the crushed stone, ceramsite 8-10% of the weight of the crushed stone and an emulsifier 0.2-0.5% of the weight of the cement; wherein the cement is 42.5-52.5; the sand is yellow sand or machine sand;
the inner core layer comprises the following components in parts by weight: 10-15% of crushed stone, by weight, of diatomite; 10-30% by weight of crushed stone of bentonite; 1-1.5 times of the weight of the broken stone.
2. The concrete sand-containing water permeable brick core layer of claim 1,
the weight portion of the broken stone is 6 times of that of the cement;
the weight portion of the sand is 10 percent of the broken stone;
the weight portion of the carboxylic acid water reducing agent is 1% of the cement.
3. The concrete sand-containing water permeable brick core layer of claim 1,
the particle size of the broken stone is 0.3-1 cm;
the grain diameter of the sand is 2-2.3 mm.
4. The concrete sand-containing water permeable brick core layer of claim 1,
cement number 52.5;
the crushed stone comprises 40% of crushed stone with a particle size of 0.3-0.5cm and 60% of crushed stone with a particle size of 0.5-1 cm.
5. A preparation method of a concrete sand-containing permeable brick core layer is characterized by comprising the following steps:
step 1, taking cement, crushed stone 4-8 times of the weight of the cement, sand 8-15% of the weight of the crushed stone, a carboxylic acid water reducing agent 0.5-2% of the weight of the cement, quartz sand 8-10% of the weight of the crushed stone, ceramsite 8-10% of the weight of the crushed stone and an emulsifier 0.2-0.5% of the weight of the cement as raw materials, feeding and stirring to obtain a mixed core material;
step 2, filling the mixed core material into a core layer die to obtain a material to be shaped;
step 3, vibrating and pressurizing the material to be shaped to obtain an outer surrounding core layer;
step 4, taking 10-15% of diatomite, 10-30% of bentonite and 1-1.5 times of polyamide, and stirring and mixing the diatomite, the bentonite and the polyamide for 15 minutes to obtain an inner core mixture;
step 5, continuously shearing, stretching and drawing the inner core mixture in a vacuum state to form a soft reticular polyamide mixed film;
step 6, placing the soft reticular polyamide mixed membrane into a mold, and vibrating and pressurizing the raw materials in the mold to obtain an inner core layer;
and 7, placing the inner core layer in the middle, and coating the outer surrounding core layer on the upper side and the lower side of the inner core layer to form the concrete sand-containing permeable brick core layer.
6. The method for preparing the concrete sand-containing water permeable brick core layer of claim 5,
in the step 1, the stirring time for feeding and stirring the raw materials is 5 minutes.
7. The method for preparing the concrete sand-containing water permeable brick core layer of claim 5,
in the step 3, the vibration pressurizing includes:
vibrating the material to be molded at a vibration frequency of 3800 times/second and at 150KN/m2Pressurizing under the pressure of (2), and vibrating and pressurizing the sizing material.
CN201811121436.0A 2018-09-26 2018-09-26 Concrete sand-containing water permeable brick core layer and preparation method thereof Active CN109020344B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811121436.0A CN109020344B (en) 2018-09-26 2018-09-26 Concrete sand-containing water permeable brick core layer and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811121436.0A CN109020344B (en) 2018-09-26 2018-09-26 Concrete sand-containing water permeable brick core layer and preparation method thereof

Publications (2)

Publication Number Publication Date
CN109020344A CN109020344A (en) 2018-12-18
CN109020344B true CN109020344B (en) 2021-10-12

Family

ID=64618396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811121436.0A Active CN109020344B (en) 2018-09-26 2018-09-26 Concrete sand-containing water permeable brick core layer and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109020344B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003104765A (en) * 2001-09-27 2003-04-09 Sumitomo Osaka Cement Co Ltd Porous concrete molding for planting and its manufacturing method
CN102180623A (en) * 2011-03-09 2011-09-14 福建工程学院 Water-permeable cement concrete
CN103290753A (en) * 2013-05-28 2013-09-11 深圳海龙建筑制品有限公司 Nano-composite environment-friendly water permeable brick and production method thereof
CN106630825A (en) * 2016-12-15 2017-05-10 东莞深圳清华大学研究院创新中心 Composite water permeable brick and preparation method thereof
CN107200531A (en) * 2017-06-03 2017-09-26 合肥慧林建材有限公司 A kind of ecological permeable pavement brick and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003104765A (en) * 2001-09-27 2003-04-09 Sumitomo Osaka Cement Co Ltd Porous concrete molding for planting and its manufacturing method
CN102180623A (en) * 2011-03-09 2011-09-14 福建工程学院 Water-permeable cement concrete
CN103290753A (en) * 2013-05-28 2013-09-11 深圳海龙建筑制品有限公司 Nano-composite environment-friendly water permeable brick and production method thereof
CN106630825A (en) * 2016-12-15 2017-05-10 东莞深圳清华大学研究院创新中心 Composite water permeable brick and preparation method thereof
CN107200531A (en) * 2017-06-03 2017-09-26 合肥慧林建材有限公司 A kind of ecological permeable pavement brick and preparation method thereof

Also Published As

Publication number Publication date
CN109020344A (en) 2018-12-18

Similar Documents

Publication Publication Date Title
JP6043853B2 (en) Porous ceramic sintered body and method for producing the same
CN102503201A (en) Pre-coated sand, preparation method thereof and composite water permeable brick
CN107574733A (en) A kind of imitative stone material water-permeable brick and preparation method thereof
US6846355B2 (en) Road paving material and method
CN112537932B (en) Pervious concrete and construction method thereof
CN108164281B (en) Open spontaneous multi-functional water-permeable brick of generation negative oxygen ion and preparation method thereof
JP2003104765A (en) Porous concrete molding for planting and its manufacturing method
CN109020344B (en) Concrete sand-containing water permeable brick core layer and preparation method thereof
CN106810150A (en) A kind of EVA resin cooperates with the wear-resisting enhanced cement base water-permeable brick of slag micro powder
CN111072342B (en) Recycled aggregate pervious concrete with increased porosity and preparation method thereof
CN108252178A (en) A kind of technique for being used to prepare afforestation pavement seepage material
SU826952A3 (en) Method of making ceramic plates
CN107445544A (en) A kind of pervious concrete and preparation method thereof
CN115010411B (en) Heat storage building block and preparation method and application thereof
CN109400090B (en) Environment-friendly road paving block, preparation method thereof and construction waste treatment method
KR20070052187A (en) Block
CN111423182A (en) Method for preparing garden rockery by utilizing construction waste regeneration
CN107032678B (en) A kind of gradient water-permeable brick and its production method
KR102471100B1 (en) Air purification aggregate coated with zeolite and coconut shell powder activated carbon, method of the same and concrete water permeable block by using the same
CN109235172A (en) A method of hollow cement product is prepared based on high hydroscopic resin
CN109354473A (en) A kind of preparation method of unburned environmentally protective water-permeable brick
CN111807796B (en) Artificial lake bottom anti-permeability method based on composite soil anti-permeability layer
CN106673529B (en) A kind of baking-free water-permeable brick and preparation method thereof with antibacterial and deodorization
CN111393141A (en) Iron tailing water permeable brick and preparation method thereof
CN108689624A (en) A kind of high mating type discards the preparation method of rubber powder composite mortar material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant