CN113800856A - Concrete drain pipe with good anti-permeability performance and production process thereof - Google Patents
Concrete drain pipe with good anti-permeability performance and production process thereof Download PDFInfo
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- CN113800856A CN113800856A CN202111169388.4A CN202111169388A CN113800856A CN 113800856 A CN113800856 A CN 113800856A CN 202111169388 A CN202111169388 A CN 202111169388A CN 113800856 A CN113800856 A CN 113800856A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/383—Whiskers
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4643—Silicates other than zircon
- C04B14/4656—Al-silicates, e.g. clay
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/56—Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of building materials, in particular to a concrete drain pipe with good impermeability and a production process thereof; the concrete drain pipe is composed of a concrete pipe and a steel reinforcement framework; the concrete pipe is composed of the following raw materials in parts by weight: 320-360 parts of ordinary portland cement, 430-500 parts of medium sand, 580-630 parts of stones, 30-45 parts of volcanic mud, 40-60 parts of fly ash, 20-35 parts of talcum powder, 4-8 parts of magnesium oxide, 12-18 parts of magnesium borate whiskers, 18-30 parts of aluminum silicate fibers, 4-8 parts of water reducing agent, 3.5-5.5 parts of anti-permeability agent, 3-5 parts of retarder, 2.5-4.0 parts of anti-permeability synergist and 150-180 parts of water; the concrete drain pipe produced by the invention has good impermeability and corrosion resistance, and also has good mechanical property, thereby improving the quality and grade of the concrete drain pipe to a certain extent.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a concrete drain pipe with good impermeability and a production process thereof.
Background
Concrete is a composite material formed by binding fine and coarse aggregates with cement (cement paste) and hardening them over time, and in the past, lime-based cements, such as lime paste, have been most commonly used, but hydraulic cements, such as calcium aluminate cement or portland cement, have also been used.
Because of its excellent mechanical properties, concrete is widely used in the construction field. The concrete drain pipe is used as a sewer pipeline in a building foundation of urban construction, and can drain sewage and flood prevention and drainage, and a water feeding pipe and a farmland motor-pumped well which are used in some special factories and mines.
Although the concrete drain pipe produced by the core process has better mechanical property, the concrete drain pipe has relatively poorer impermeability and relatively poorer corrosion resistance, so that the service life and the quality of the concrete drain pipe are influenced.
Therefore, the concrete drain pipe with good impermeability and strong corrosion resistance is provided, and the technical problem to be solved by the technical personnel in the field is urgently needed.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a concrete drain pipe with good anti-permeability performance, which not only has good anti-permeability performance and corrosion resistance, but also has excellent mechanical properties, thereby effectively ensuring the quality and grade of the concrete drain pipe.
In order to achieve the purpose, the invention provides the following technical scheme:
the concrete drain pipe with good impermeability comprises a concrete pipe and a steel reinforcement framework; the concrete pipe is composed of the following raw materials in parts by weight: 320-360 parts of ordinary portland cement, 430-430 parts of medium sand, 580-630 parts of stones, 30-45 parts of volcanic mud, 40-60 parts of fly ash, 20-35 parts of talcum powder, 4-8 parts of magnesium oxide, 12-18 parts of magnesium borate whiskers, 18-30 parts of aluminum silicate fibers, 4-8 parts of water reducing agent, 3.5-5.5 parts of anti-permeability agent, 3-5 parts of retarder, 2.5-4.0 parts of anti-permeability synergist and 150-180 parts of water.
By adopting the technical scheme: the anti-permeability synergist prepared by the invention is used as a raw material for producing the concrete drain pipe together with the anti-permeability agent, and the anti-permeability synergist has a good water-absorbing expansion effect, so that the structural compactness of the interior of the concrete drain pipe can be effectively improved, the anti-permeability performance of the concrete drain pipe is improved, and the corrosion resistance of the concrete drain pipe can be effectively improved, thereby ensuring the quality of the concrete drain pipe. Meanwhile, the produced concrete drain pipe also has good mechanical property, and the quality of the concrete drain pipe is effectively ensured.
The invention is further configured to: the water reducing agent is any one of sodium sulfite, sodium lignosulfonate and sugar calcium.
By adopting the technical scheme: the water reducing agent can well disperse cement particles, improve the workability of the cement particles and reduce the unit water consumption. Can also improve the fluidity of concrete mixture, reduce the unit cement dosage and save the dosage of common Portland cement.
The invention is further configured to: the anti-permeability agent is any one of calcium chloride, calcium formate and urea.
By adopting the technical scheme: the use of the anti-permeability agent can effectively improve the waterproof and anti-permeability performance of the concrete drain pipe and ensure the quality of the concrete drain pipe.
The invention is further configured to: the retarder is any one of sodium gluconate, sodium citrate and sodium tripolyphosphate.
By adopting the technical scheme: the retarder can reduce the hydration speed and the hydration heat of the ordinary portland cement, prolong the setting time and ensure that the fresh concrete can keep better mechanical property for a longer time.
The invention is further configured to: the preparation method of the anti-permeability synergist comprises the following steps:
i, roasting coal-based kaolin with the particle size of 5-10 mu m at the temperature of 600-900 ℃ for 1-2 hours to obtain metakaolin; then mixing the obtained metakaolin with a mixed treating agent with the mass 6-12 times of that of the metakaolin, and carrying out heat preservation reaction for 15-40 h at the temperature of 90-100 ℃; after the reaction is finished, naturally cooling the obtained mixed components to room temperature, then sequentially filtering, washing and drying the mixed components, and storing the obtained solid particles for later use;
ii, placing the obtained solid particles in a reaction kettle, and slowly injecting nano zeolite powder with the mass of 35-60% of the solid particles and the particle size of 8-20 nm into the kettle; after ultrasonic dispersion is carried out for 30-50 min, slowly injecting mixed liquid with the mass 6-10 times of that of solid particles into the mixture; slowly injecting a modifier with the mass of 30-45% of solid particles into a reaction kettle under the condition of ultrasonic dispersion, and carrying out heat preservation reaction for 6-10 h at the temperature of 50-70 ℃;
and iii, after the reaction is finished, sequentially filtering, washing and drying the mixed product in the reaction kettle to obtain the finished product of the anti-permeability synergist.
By adopting the technical scheme: the method comprises the steps of firstly treating metakaolin by using a mixed treating agent to prepare solid particles with a porous structure and large porosity, and then filling the nano zeolite powder into the porous pores on the surfaces of the solid particles through ultrasonic dispersion. Then the mixed liquid is injected into the reaction kettle, and at the moment, the nano zeolite powder expands after absorbing water, so that the nano zeolite powder cannot escape from pores on the surface of the solid particles. Finally, the modifier and the surface of the solid particles are subjected to chemical reaction to form bonds, so that the pores on the surface of the solid particles are finally blocked, and the probability of falling of the nano zeolite powder from the pores of the solid particles is reduced.
The invention is further configured to: the mixed treating agent used in the step I is prepared from silicon dioxide, sodium oxide, aluminum oxide and deionized water according to the weight ratio of 1: 0.8-1.2: 0.07-0.1: 15-20 by mole ratio.
By adopting the technical scheme: the metakaolin is treated by adopting the mixed treating agent to prepare solid particles with a porous structure, the specific surface area of the solid particles is large, and the average pore diameter of the solid particles is 30-50 nm, so that the preparation of the subsequent anti-permeability synergist is facilitated.
The invention is further configured to: and the mixed solution used in the step II is prepared by uniformly ultrasonically dispersing 50-70% of ethanol aqueous solution, 1.5-2.0% of nonylphenol polyoxyethylene ether and 1.8-2.5% of Tween80 by mass.
By adopting the technical scheme: the use of the mixed solution can effectively ensure the dispersion uniformity of the modifier, and simultaneously can promote the expansion of the nano zeolite powder after water absorption, so as to ensure that the nano zeolite powder cannot escape from the pores on the surface of the solid particles and is convenient for subsequent modification treatment.
The invention is further configured to: the modifier used in the step II is any one of (3-aminopropyl) trimethoxysilane and (3-aminopropyl) triethoxysilane.
By adopting the technical scheme: through the use of the modifier, the modifier can react with the surface of the solid particle to form a bond, and finally the modifier is connected with the surface of the solid particle through a chemical bond, so that a three-dimensional network structure is formed on the surface of the solid particle and the inner wall of the pore, the pore on the surface of the solid particle is blocked, and the probability of falling of the nano zeolite powder from the pore of the solid particle is reduced.
The invention also aims to provide a production process of the concrete drain pipe with good impermeability, which comprises the following steps:
s1, weighing the raw materials according to the formula, crushing stones into particles of 6-12 mm, and crushing other solid materials into particle materials of 20-50 microns; then, storing the processed raw materials respectively for later use;
s2, transferring common portland cement, medium sand, stones, volcanic mud, fly ash and talcum powder into a mixing device, then respectively putting water and the rest raw materials into the mixing device, mechanically stirring uniformly, and discharging air in the mixture by adopting ultrasonic oscillation to prepare mixed slurry for later use;
s3, placing the manufactured steel reinforcement framework into a core mold vibration mould for producing a concrete drain pipe, pouring the mixed slurry obtained in the step S2 into the steel reinforcement framework, and performing vibration molding; curing the molded product at room temperature for 2-3 days, and then demolding;
s4, moving the concrete drain pipe semi-finished product after curing treatment to a curing field, and curing for 25-30 d under the conditions that the temperature is 18-22 ℃ and the humidity is 90-95%, thus obtaining the concrete drain pipe finished product.
By adopting the technical scheme: the concrete drain pipe produced by the invention has good impermeability and corrosion resistance, and also has good mechanical property, thereby improving the grade of the concrete drain pipe to a certain extent.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention not only can effectively improve the structural compactness of the interior of the concrete drain pipe and the anti-seepage performance of the concrete drain pipe, but also can effectively improve the corrosion resistance of the concrete drain pipe, thereby ensuring the quality of the concrete drain pipe;
2. according to the invention, the magnesium borate crystal whisker and the aluminum silicate fiber are used as raw materials for preparing the concrete drain pipe, and the magnesium borate crystal whisker and the aluminum silicate fiber are synergistic with each other, so that the mechanical property of the concrete drain pipe can be effectively improved;
3. the coal ash and the anti-permeability synergist are mutually cooperated, so that the pores in the concrete can be effectively filled, the strength and the anti-permeability of the concrete are improved, and the quality of the concrete drain pipe is ensured.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
A concrete drain pipe with good impermeability is composed of a concrete pipe and a steel reinforcement framework; the concrete pipe is composed of the following raw materials in parts by weight: 320 parts of ordinary portland cement, 430 parts of medium sand, 580 parts of pebble, 30 parts of volcanic mud, 40 parts of fly ash, 20 parts of talcum powder, 4 parts of magnesium oxide, 12 parts of magnesium borate whisker, 18 parts of aluminum silicate fiber, 4 parts of sodium sulfite, 3.5 parts of calcium chloride, 3 parts of sodium gluconate, 2.5 parts of anti-permeability synergist and 150 parts of water.
The preparation method of the anti-permeability synergist comprises the following steps:
i, roasting coal-series kaolin with the particle size of 5 mu m at the temperature of 600 ℃ for 1h to obtain metakaolin; then mixing the obtained metakaolin with a mixed treating agent with the mass 6 times of that of the metakaolin, and carrying out heat preservation reaction for 40 hours at the temperature of 90 ℃; after the reaction is finished, naturally cooling the obtained mixed components to room temperature, then sequentially filtering, washing and drying the mixed components, and storing the obtained solid particles for later use;
ii, placing the obtained solid particles in a reaction kettle, and slowly injecting the nano zeolite powder with the mass of 35% of the solid particles and the particle size of 8nm into the kettle; after ultrasonic dispersion for 30min, slowly injecting mixed liquid with the mass 6 times that of the solid particles into the reactor; under the condition of ultrasonic dispersion, (3-aminopropyl) trimethoxy silane with the mass of 30 percent of solid particles is slowly injected into a reaction kettle and reacts for 6 hours at the temperature of 50 ℃;
and iii, after the reaction is finished, sequentially filtering, washing and drying the mixed product in the reaction kettle to obtain the finished product of the anti-permeability synergist.
The mixed treating agent used in the step I is prepared from silicon dioxide, sodium oxide, aluminum oxide and deionized water according to the weight ratio of 1: 0.8: 0.07: 15 in a molar ratio.
The mixed solution used in the step II is prepared by uniformly ultrasonically dispersing 50% ethanol aqueous solution, 1.5% nonylphenol polyoxyethylene ether and 1.8% Tween80 by mass.
The production process of the concrete drain pipe with good impermeability comprises the following steps:
s1, weighing the raw materials according to the formula, crushing the pebbles into particles of 6mm, and crushing other solid materials into particle materials of 20 mu m; then, storing the processed raw materials respectively for later use;
s2, transferring common portland cement, medium sand, stones, volcanic mud, fly ash and talcum powder into a mixing device, then respectively putting water and the rest raw materials into the mixing device, mechanically stirring uniformly, and discharging air in the mixture by adopting ultrasonic oscillation to prepare mixed slurry for later use;
s3, placing the manufactured steel reinforcement framework into a core mold vibration mould for producing a concrete drain pipe, pouring the mixed slurry obtained in the step S2 into the steel reinforcement framework, and performing vibration molding; curing the molded product at room temperature for 2d, and then demolding;
and S4, moving the semi-finished product of the concrete drain pipe after the curing treatment to a curing field, and curing for 25d under the conditions that the temperature is 18 ℃ and the humidity is 90%, thus obtaining the finished product of the concrete drain pipe.
Example 2
The preparation method of the concrete drain pipe with good impermeability is similar to that of the concrete drain pipe in the embodiment 1, except that the mixture ratio of the raw materials is different; the material composition is as follows: 340 parts of ordinary portland cement, 470 parts of medium sand, 600 parts of stones, 40 parts of volcanic mud, 50 parts of fly ash, 30 parts of talcum powder, 6 parts of magnesium oxide, 15 parts of magnesium borate whiskers, 25 parts of aluminum silicate fibers, 6 parts of sodium lignosulfonate, 4.5 parts of calcium formate, 4 parts of sodium citrate, 3.5 parts of an anti-permeability synergist and 170 parts of water.
The particle size of the nano zeolite powder is 15nm, and the dosage is 50% of solid particles;
the modifier is (3-aminopropyl) triethoxysilane, and the dosage of the modifier is 40 percent of that of the solid particles;
the synthetic treating agent is prepared from silicon dioxide, sodium oxide, aluminum oxide and deionized water according to the weight ratio of 1: 1: 0.08: 18 in a molar ratio.
Example 3
The preparation method of the concrete drain pipe with good impermeability is similar to that of the concrete drain pipe in the embodiment 1, except that the mixture ratio of the raw materials is different; the material composition is as follows: 360 parts of ordinary portland cement, 500 parts of medium sand, 630 parts of cobblestone, 45 parts of volcanic mud, 60 parts of fly ash, 35 parts of talcum powder, 8 parts of magnesium oxide, 18 parts of magnesium borate whisker, 30 parts of aluminum silicate fiber, 8 parts of calcium saccharate and 5.5 parts of calcium silicate
Urea, 5 parts of sodium tripolyphosphate, 4.0 parts of an anti-permeability synergist and 180 parts of water.
The particle size of the nano zeolite powder is 20nm, and the using amount of the nano zeolite powder is 60 percent of solid particles;
the modifier is (3-aminopropyl) trimethoxy silane, and the dosage of the modifier is 45 percent of that of the solid particles;
the synthetic treating agent is prepared from silicon dioxide, sodium oxide, aluminum oxide and deionized water according to the weight ratio of 1: 1.2: 0.1: 20 are mixed according to a molar ratio of 20.
Comparative example 1: the concrete drain pipe produced by the technical scheme provided by the embodiment 1 of the invention is different in that: no permeation-resistant synergist was used;
comparative example 2: the concrete drain pipe produced by the technical scheme provided by the embodiment 1 of the invention is different in that: metakaolin with the same particle size is adopted to replace an anti-permeability synergist;
comparative example 3: the concrete drain pipe produced by the technical scheme provided by the embodiment 1 of the invention is different in that: the raw materials do not contain magnesium borate crystal whisker;
comparative example 4: the concrete drain pipe produced by the technical scheme provided by the embodiment 1 of the invention is different in that: the raw materials do not contain aluminum silicate fiber;
performance testing
The results are described in Experimental examples 1 to 3; the concrete drain pipes prepared by the comparative examples 1 to 4 are marked as comparative examples 1 to 4; then, selecting one part of each concrete drain pipe sample prepared in experimental examples 1-3 and comparative examples 1-4 respectively, and testing the related performance of each group of samples respectively, wherein the obtained data are recorded in the following table:
as can be seen from the relevant data in the table, the concrete drain pipe produced by the invention not only has good impermeability and corrosion resistance, but also has good mechanical properties, thereby improving the grade of the concrete drain pipe to a certain extent. Therefore, the concrete drain pipe prepared by the method has wider market prospect and is more suitable for popularization.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. The concrete drain pipe with good impermeability is characterized by comprising a concrete pipe and a steel reinforcement framework; the concrete pipe is composed of the following raw materials in parts by weight: 320-360 parts of ordinary portland cement, 430-500 parts of medium sand, 580-630 parts of stones, 30-45 parts of volcanic mud, 40-60 parts of fly ash, 20-35 parts of talcum powder, 4-8 parts of magnesium oxide, 12-18 parts of magnesium borate whiskers, 18-30 parts of aluminum silicate fibers, 4-8 parts of water reducing agent, 3.5-5.5 parts of anti-permeability agent, 3-5 parts of retarder, 2.5-4.0 parts of anti-permeability synergist and 150-180 parts of water.
2. The concrete drain pipe with good impermeability according to claim 1, wherein: the water reducing agent is any one of sodium sulfite, sodium lignosulfonate and sugar calcium.
3. The concrete drain pipe with good impermeability according to claim 1, wherein: the anti-permeability agent is any one of calcium chloride, calcium formate and urea.
4. The concrete drain pipe with good impermeability according to claim 1, wherein: the retarder is any one of sodium gluconate, sodium citrate and sodium tripolyphosphate.
5. The concrete drain pipe with good impermeability according to claim 1, wherein: the preparation method of the anti-permeability synergist comprises the following steps:
i, roasting coal-based kaolin with the particle size of 5-10 mu m at the temperature of 600-900 ℃ for 1-2 hours to obtain metakaolin; then mixing the obtained metakaolin with a mixed treating agent with the mass 6-12 times of that of the metakaolin, and carrying out heat preservation reaction for 15-40 h at the temperature of 90-100 ℃; after the reaction is finished, naturally cooling the obtained mixed components to room temperature, then sequentially filtering, washing and drying the mixed components, and storing the obtained solid particles for later use;
ii, placing the obtained solid particles in a reaction kettle, and slowly injecting nano zeolite powder with the mass of 35-60% of the solid particles and the particle size of 8-20 nm into the kettle; after ultrasonic dispersion is carried out for 30-50 min, slowly injecting mixed liquid with the mass 6-10 times of that of solid particles into the mixture; slowly injecting a modifier with the mass of 30-45% of solid particles into a reaction kettle under the condition of ultrasonic dispersion, and carrying out heat preservation reaction for 6-10 h at the temperature of 50-70 ℃;
and iii, after the reaction is finished, sequentially filtering, washing and drying the mixed product in the reaction kettle to obtain the finished product of the anti-permeability synergist.
6. The concrete drain pipe with good impermeability according to claim 5, wherein: the mixed treating agent used in the step I is prepared from silicon dioxide, sodium oxide, aluminum oxide and deionized water according to the weight ratio of 1: 0.8-1.2: 0.07-0.1: 15-20 by mole ratio.
7. The concrete drain pipe with good impermeability according to claim 5, wherein: and the mixed solution used in the step II is prepared by uniformly ultrasonically dispersing 50-70% of ethanol aqueous solution, 1.5-2.0% of nonylphenol polyoxyethylene ether and 1.8-2.5% of Tween80 by mass.
8. The concrete drain pipe with good impermeability according to claim 5, wherein: the modifier used in the step II is any one of (3-aminopropyl) trimethoxysilane and (3-aminopropyl) triethoxysilane.
9. The production process for preparing the concrete drain pipe with good impermeability according to any one of claims 1 to 8, which is characterized by comprising the following steps:
s1, weighing the raw materials according to the formula, crushing stones into particles of 6-12 mm, and crushing other solid materials into particle materials of 20-50 microns; then, storing the processed raw materials respectively for later use;
s2, transferring common portland cement, medium sand, stones, volcanic mud, fly ash and talcum powder into a mixing device, then respectively putting water and the rest raw materials into the mixing device, mechanically stirring uniformly, and discharging air in the mixture by adopting ultrasonic oscillation to prepare mixed slurry for later use;
s3, placing the manufactured steel reinforcement framework into a core mold vibration mould for producing a concrete drain pipe, pouring the mixed slurry obtained in the step S2 into the steel reinforcement framework, and performing vibration molding; curing the molded product at room temperature for 2-3 days, and then demolding;
s4, moving the concrete drain pipe semi-finished product after curing treatment to a curing field, and curing for 25-30 d under the conditions that the temperature is 18-22 ℃ and the humidity is 90-95%, thus obtaining the concrete drain pipe finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169388.4A CN113800856A (en) | 2021-10-08 | 2021-10-08 | Concrete drain pipe with good anti-permeability performance and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169388.4A CN113800856A (en) | 2021-10-08 | 2021-10-08 | Concrete drain pipe with good anti-permeability performance and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113800856A true CN113800856A (en) | 2021-12-17 |
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| CN114573289A (en) * | 2022-01-26 | 2022-06-03 | 浙江建设职业技术学院 | High-performance biological corrosion resistant cement drain pipe and preparation method and application thereof |
| CN115385632A (en) * | 2022-08-31 | 2022-11-25 | 内蒙古超牌新材料股份有限公司 | Salt-freezing-resistant concrete, highway guardrail and preparation method thereof |
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