CN113651551A - Foam concrete basalt chopped fiber dispersing agent and application method thereof - Google Patents
Foam concrete basalt chopped fiber dispersing agent and application method thereof Download PDFInfo
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- CN113651551A CN113651551A CN202110958428.7A CN202110958428A CN113651551A CN 113651551 A CN113651551 A CN 113651551A CN 202110958428 A CN202110958428 A CN 202110958428A CN 113651551 A CN113651551 A CN 113651551A
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- basalt
- fibers
- stirring
- foam
- basalt fibers
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
-
- 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
- C04B20/023—Chemical treatment
Abstract
The invention discloses a foam concrete basalt chopped fiber dispersing agent and an application method thereof. Filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, cleaning foams on the basalt fibers until the surfaces of the basalt fibers have slight friction feeling. Stirring cement and mixing water to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed, stirring at a high speed and standing. And filling foam prepared from the animal foaming liquid into the cement paste, uniformly mixing the foam and cement paste to prepare foam concrete paste with certain density, and pouring the foam concrete paste. The invention effectively solves the problem of dispersion of basalt fibers in the foam concrete and also solves the problems of low strength and poor quality of a foam concrete slurry matrix caused by the surfactant polymer material.
Description
Technical Field
The invention relates to a fiber dispersing agent, in particular to a foam concrete basalt chopped fiber dispersing agent and an application method thereof.
Background
The basalt fiber has stable chemical property and strong acid and alkali resistance, the reinforced inorganic polymer cement concrete has more excellent fracture resistance, and the basalt fiber is distributed disorderly in a three-dimensional space, so that the structure of holes of the foam concrete is changed, and the mechanical property of the foam concrete is enhanced. Due to the geometric characteristic of large slenderness ratio of basalt fibers and the surface hydrophobicity of the basalt fibers, the basalt fibers tend to agglomerate and coagulate into fiber blocks under the action of mechanical stirring force, so that the mechanical property of the foam concrete is influenced.
In the process of manufacturing the foam concrete, foam is filled into cement paste, so that the cement paste has certain complexity. If the surfactant and the antistatic agent are directly added into the mixing water and cement to be stirred according to the conventional method, the quality of cement paste is deteriorated, and the charged foam cannot stably exist in the cement paste. Therefore, in conclusion, the invention provides the basalt chopped fiber dispersing agent for the foam concrete, which can effectively disperse basalt fibers in a cement matrix, does not reduce the quality of cement paste, effectively solves some problems in the manufacturing process of basalt fiber foam concrete, and improves the performance of a composite material.
Disclosure of Invention
The technical scheme adopted by the invention is that the foam concrete basalt chopped fiber dispersing agent is characterized by comprising a suspension obtained by mixing a surfactant, an antistatic agent and water, wherein the surfactant, the antistatic agent and the water are mixed according to the ratio of (0.1-0.2): (0.04-0.08): 32, are mixed.
Further, the surfactant is one of carboxymethyl cellulose, sodium carboxymethyl cellulose, carboxypropyl methyl cellulose, sodium polyacrylate or potassium polyacrylate.
Further, the antistatic agent is one of an antistatic agent SN, an antistatic agent TM or a PK-antistatic agent.
Further, the application method of the dispersing agent comprises the following steps:
1) a dispersion according to claim 1 is prepared, and the mixture is stirred for 2 to 3 minutes so that no insoluble matter is visibly observed in the suspension.
2) Mixing basalt fibers and the dispersion liquid obtained in the step 1) according to a mass ratio of 5:33, and slowly stirring the mixture for 30 seconds by using a glass rod.
3) Dispersing the mixture of the fibers and the dispersion liquid obtained in the step 2) by using an ultrasonic vibration rod for 15min, or standing for 10min, and then slowly stirring for 10 min.
4) Filtering the basalt fibers obtained in the step 3) by using a screen, slightly washing the basalt fibers, and cleaning foams on the basalt fibers until the surfaces of the basalt fibers have slight friction feeling.
5) Stirring cement and mixing water for 2-3 min to prepare cement paste, pouring the basalt fibers cleaned in the step 4) into the cement paste, stirring at a low speed for 2min, stirring at a high speed for 10s, and standing for 1 min.
6) Filling foam prepared from animal foaming liquid into the cement paste obtained in the step 5), uniformly mixing the foam and cement paste to prepare foam concrete paste with certain density after filling a proper amount of foam, and then pouring the foam concrete paste.
Detailed Description
The embodiment of the invention is as follows:
a basalt foam concrete chopped fiber dispersing agent comprises a high molecular polymer dispersing agent, an antistatic agent, water, a surfactant, the antistatic agent and the water, wherein the weight ratio of the surfactant to the antistatic agent to the water is (0.1-0.2): (0.04-0.08): 32, are mixed. The high molecular polymer dispersant is one of carboxymethyl cellulose, sodium carboxymethyl cellulose, sodium polyacrylate or potassium polyacrylate; the antistatic agent is one of an antistatic agent SN, an antistatic agent TM or a PK-antistatic agent.
An application method of a foam concrete basalt chopped fiber dispersing agent comprises the following steps:
7) and (3) preparing the basalt foam concrete chopped fiber dispersing agent, and stirring the suspension dispersion liquid for 2-3 minutes to ensure that no obvious insoluble substances are seen in the suspension liquid.
8) Mixing basalt fibers and the dispersion liquid obtained in the step 1) according to a mass ratio of 5:33, and slowly stirring the mixture for 30 seconds by using a glass rod.
9) Dispersing the mixture of the fibers and the dispersion liquid obtained in the step 2) by using an ultrasonic vibration rod for 15min, or standing for 10min, and then slowly stirring for 10 min.
10) Filtering the basalt fibers obtained in the step 3) by using a screen, slightly washing the basalt fibers, and cleaning foams on the basalt fibers until the surfaces of the basalt fibers have slight friction feeling.
11) Stirring cement and mixing water for 2-3 min to prepare cement paste, pouring the basalt fibers cleaned in the step 4) into the cement paste, stirring at a low speed for 2min, stirring at a high speed for 10s, and standing for 1 min.
12) Filling foam prepared from animal foaming liquid into the cement paste obtained in the step 5), uniformly mixing the foam and cement paste to prepare foam concrete paste with certain density after filling a proper amount of foam, and then pouring the foam concrete paste.
Example 1
Hydroxypropyl methylcellulose, an antistatic agent TM and water are mixed according to the weight ratio of 0.1: 0.05: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, dispersing for 15min with an ultrasonic vibrator, and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the weight of the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the weight of the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 2.2%, 2.3%, 2.4%, 2.1%, 2.4%, 2.3% and 2.1%, and the fibers are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 2.1%, 1.6%, 1.8%, 1.3%, 1.5%, 2.8%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Example 2
Mixing sodium carboxymethylcellulose, an antistatic agent SN and water according to the weight ratio of 0.15: 0.06: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, dispersing for 15min with an ultrasonic vibrator, and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 2.7%, 2.8%, 2.6%, 2.7%, 2.8%, 2.6% and 2.9%, and the fibers are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 2.1%, 1.3%, 3.5%, 3.7%, 2.2%, 2.1%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Example 3
Mixing the carboxypropyl methyl cellulose, the antistatic agent PK and water according to the weight ratio of 0.12: 0.07: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, dispersing for 15min with an ultrasonic vibrator, and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 3.1%, 3.2%, 3.0%, 3.3%, 3.2%, 3.1% and 3.2%, and the fibers are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 1.9%, 2.5%, 3.8%, 3.7%, 2.0%, 2.1%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Example 4
Sodium carboxymethyl cellulose, an antistatic agent SN and water are mixed according to the weight ratio of 0.18: 0.08: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, dispersing for 15min with an ultrasonic vibrator, and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 2.2%, 2.3%, 2.1%, 2.0%, 2.3%, 2.2% and 2.2% fibers, and are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 1.9%, 4.7%, 1.3%, 2.7%, 3.3%, 2.1%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Example 5
Mixing sodium polyacrylate, antistatic agent TM and water according to the weight ratio of 0.17: 0.04: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, dispersing for 15min with an ultrasonic vibrator, and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 2.8%, 2.9%, 2.7%, 2.9%, 2.8%, 2.7% and 2.8%, and the fibers are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 2.0%, 5.7%, 1.4%, 3.3%, 6.6%, 2.1%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Example 6
Mixing potassium polyacrylate, an antistatic agent PK and water according to the weight ratio of 0.2: 0.08: 32 to obtain a dispersing agent, stirring the dispersing agent for 2-3 minutes, and mixing the basalt fibers and the dispersing agent according to a mass ratio of 5:33, stirring for 30s with a glass rod, then standing for 15min and slowly stirring for 10 min. And then filtering out the basalt fibers by using a screen, slightly washing the basalt fibers, washing off foams on the basalt fibers until the surface of the basalt fibers has slight friction feeling. And then stirring the cement and mixing water for 2-3 min to prepare cement paste, pouring the cleaned basalt fibers into the cement paste, stirring at a low speed for 2min, quickly stirring for 10s, and standing for 1 min. Then filling foam made of animal foaming liquid into the cement paste, after filling a proper amount of foam, uniformly mixing the foam and cement paste to prepare foam concrete paste with a certain density, and then pouring the foam concrete paste. Selecting six samples from different parts of the foam concrete cement-based composite material added with the mixture of the basalt chopped fibers and the dispersing agent, respectively weighing the samples, elutriating the samples with water, separating out the basalt chopped fibers, drying the basalt chopped fibers, and then weighing the basalt chopped fibers, and finally obtaining that the mass fractions of the basalt chopped fibers in the five samples, which account for the total mass of the samples, are respectively 3.1%, 3.3%, 3.2%, 3.1%, 3.3% and 3.2%, and the fibers are uniformly dispersed. The samples without the dispersant added under the same conditions finally measured that the mass dispersion of the basalt chopped fibers was 1.3%, 5.8%, 1.4%, 2.2%, 7.3%, 1.1%, and there was a lumping phenomenon, and the fibers could not be effectively dispersed.
Six samples are selected from different parts of the formed foam concrete added with the mixture of the basalt chopped fibers and the dispersing agent, and the measured fiber content difference is stabilized within 20 percent, so that the good dispersing effect is achieved, and the method has good application significance and prospect.
Claims (4)
1. A foam concrete basalt chopped fiber dispersing agent is characterized by comprising a suspension obtained by mixing a surfactant, an antistatic agent and water, wherein the surfactant, the antistatic agent and the water are mixed according to the ratio of (0.1-0.2): (0.04-0.08): 32, are mixed.
2. The foamed concrete basalt chopped strand dispersant according to claim 1, wherein the surfactant is one of carboxymethyl cellulose, sodium carboxymethyl cellulose, carboxypropyl methyl cellulose, sodium polyacrylate, or potassium polyacrylate.
3. The foamed concrete basalt chopped strand dispersant according to claim 1, wherein the antistatic agent is one of an antistatic agent SN, an antistatic agent TM or a PK-antistatic agent.
4. The method of using the dispersant of claim 1, comprising the steps of:
1) preparing the dispersion liquid according to claim 1, and stirring the mixed liquid for 2 to 3 minutes to prevent the suspension from showing obvious insoluble substances;
2) mixing basalt fibers and the dispersion liquid obtained in the step 1) according to a mass ratio of 5:33, and slowly stirring the mixture for 30s by using a glass rod;
3) dispersing the mixture of the fibers and the dispersion liquid obtained in the step 2) for 15min by using an ultrasonic vibration rod, or standing for 10min, and then slowly stirring for 10 min;
4) filtering the basalt fibers obtained in the step 3) by using a screen, slightly washing the basalt fibers, and cleaning foams on the basalt fibers until the surfaces of the basalt fibers have slight friction feeling;
5) stirring cement and mixing water for 2-3 min to prepare cement paste, pouring the basalt fibers cleaned in the step 4) into the cement paste, stirring at a low speed for 2min, stirring at a high speed for 10s, and standing for 1 min;
6) filling foam prepared from animal foaming liquid into the cement paste obtained in the step 5), uniformly mixing the foam and cement paste to prepare foam concrete paste with certain density after filling a proper amount of foam, and then pouring the foam concrete paste.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110958428.7A CN113651551A (en) | 2021-08-20 | 2021-08-20 | Foam concrete basalt chopped fiber dispersing agent and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110958428.7A CN113651551A (en) | 2021-08-20 | 2021-08-20 | Foam concrete basalt chopped fiber dispersing agent and application method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213048A (en) * | 2021-12-08 | 2022-03-22 | 中铁八局集团第七工程有限公司 | Simple dispersing method of basalt fibers for concrete |
| CN115893956A (en) * | 2023-01-03 | 2023-04-04 | 湘潭大学 | Environment-friendly light high-strength pervious concrete and preparation method thereof |
| CN115893952A (en) * | 2022-12-21 | 2023-04-04 | 中交第二航务工程局有限公司 | Method for preparing ultra-high performance concrete material by using polyformaldehyde fibers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446075A (en) * | 2014-11-28 | 2015-03-25 | 长安大学 | Basalt chopped fiber dispersing agent and application method thereof |
| CN106673474A (en) * | 2017-01-13 | 2017-05-17 | 昆明理工大学 | Dispersion method for basalt chopped fibers used for foamed concrete |
-
2021
- 2021-08-20 CN CN202110958428.7A patent/CN113651551A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446075A (en) * | 2014-11-28 | 2015-03-25 | 长安大学 | Basalt chopped fiber dispersing agent and application method thereof |
| CN106673474A (en) * | 2017-01-13 | 2017-05-17 | 昆明理工大学 | Dispersion method for basalt chopped fibers used for foamed concrete |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213048A (en) * | 2021-12-08 | 2022-03-22 | 中铁八局集团第七工程有限公司 | Simple dispersing method of basalt fibers for concrete |
| CN115893952A (en) * | 2022-12-21 | 2023-04-04 | 中交第二航务工程局有限公司 | Method for preparing ultra-high performance concrete material by using polyformaldehyde fibers |
| CN115893956A (en) * | 2023-01-03 | 2023-04-04 | 湘潭大学 | Environment-friendly light high-strength pervious concrete and preparation method thereof |
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Application publication date: 20211116 |