CN112569821A - Basalt fiber dispersing device and fiber asphalt mucilage preparation method - Google Patents
Basalt fiber dispersing device and fiber asphalt mucilage preparation method Download PDFInfo
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- CN112569821A CN112569821A CN202011315816.5A CN202011315816A CN112569821A CN 112569821 A CN112569821 A CN 112569821A CN 202011315816 A CN202011315816 A CN 202011315816A CN 112569821 A CN112569821 A CN 112569821A
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- Prior art keywords
- stirring
- asphalt
- fiber
- container
- basalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/85—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers on separate shafts
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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
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a basalt fiber dispersing device and a preparation method of fiber asphalt mucilage, wherein the fiber dispersing device comprises the following components: the device comprises a driving part, a stirring device, a container and a support, wherein the driving part and the stirring device are connected on the support and are adjustable, the container is fixed on a groove of the support through a protrusion, and aggregate is preset in the container. And (3) carrying out ultrasonic treatment on the dispersed and bulked basalt fibers, removing fine fibers and microparticles, then drying, finally adding the treated fibers into asphalt in batches, and adding mineral powder for mixing. The invention realizes the bulking of the bundling fiber, well solves the problem of the dispersion of the basalt fiber in the asphalt cement, and has flexible and convenient operation and good dispersibility.
Description
Technical Field
The invention relates to the technical field of road engineering materials, in particular to a basalt fiber dispersing device and a preparation method of fiber asphalt mucilage.
Background
The fiber asphalt mucilage is an important component in the fiber asphalt mixture, and the composition structure and rheological property of the fiber asphalt mucilage have decisive influence on the pavement performance of the asphalt mixture, so that the research on the performance of the fiber asphalt mucilage is an important means for conveniently and quickly reflecting the performance of the asphalt mixture.
The basalt fibers are generally bundled into 200, 400 or 800 fibers, which is determined by the production process, so that in the preparation process of the basalt fiber asphalt mixture, a dry mixing method is mostly adopted, namely, the aggregate and the basalt fibers are firstly mixed, so that the fibers are dispersed, and then the asphalt is added for mixing, thereby obtaining the basalt fiber asphalt mixture with better dispersibility. However, no aggregate is added in the preparation process of the basalt fiber asphalt mortar, and the bundled fibers cannot be uniformly dispersed, so that the performance discreteness of the basalt fiber asphalt is large, and the reliability of research results is low.
The existing common solutions mainly comprise:
(1) the mixing time is increased. Not only increases the energy consumption, but also aggravates the asphalt aging, and can not obtain the asphalt mucilage with uniformly dispersed basalt fibers;
(2) stirring with a shearing machine. The fiber dispersion effect is improved to a certain extent, but the fibers are broken by the shearing machine, the fiber size is influenced, and the performance of the asphalt mucilage is influenced.
In addition, application numbers 201910680493.0 and 20141071790.9 provide a solution dispersant method, which effectively realizes fiber dispersion, but affects the fiber surface wetting property, thereby affecting the fiber-asphalt interface effect and being not suitable for the technical field;
application No. 201910287707.8 provides a micron dispersion ball-milling technique, which effectively realizes fiber dispersion, but makes the fiber surface adhere with nano/micron powder, and affects the fiber-asphalt cement interface effect, thereby affecting the basalt fiber asphalt cement property, and is not suitable for the technical field.
Therefore, how to ensure that the basalt fibers are uniformly dispersed in the asphalt cement under the premise of not changing the micro-nano morphology of the fiber surface and the length gradation of the fibers is a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a basalt fiber dispersing device and a fiber asphalt mortar preparation method, which can realize the uniform dispersion of basalt fibers in asphalt mortar on the premise of ensuring that the surface characteristics and the length gradation of the fibers are not changed.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention discloses a basalt fiber dispersing device and a preparation method of fiber asphalt mucilage, wherein the fiber dispersing device comprises the following components: drive division, stirring portion, container and support, the drive division includes servo motor and transfer line, and the stirring portion is including rotating platform and stirring vane, and drive division and stirring portion connect on the support and adjustable, and the container is fixed in the support recess through the arch on, and the inside preset of container has gathered materials.
The invention carries out ultrasonic treatment on the dispersed and bulked basalt fibers, then carries out drying, finally adds the treated fibers into asphalt in batches, and then adds mineral powder for mixing.
Furthermore, the base of the stirring part support is provided with 4 rectangular grooves, and the position of the cross rod can be adjusted.
Furthermore, the bottom of the container of the stirring part is provided with 4 rectangular bulges, the inner wall of the container is provided with pattern bulges, and the built-in aggregate has the grain diameter of 2.36-4.75 mm.
Further, the outer ring of the rotating platform of the stirring part is connected with the inner ring through a rotor, and the inner ring is provided with 6 screw holes.
Furthermore, the stirring blades of the stirring part are bent, and the total number of the stirring blades is 6.
Furthermore, the ultrasonic treatment of the stirring part has the sonic frequency of 20-30KHz and the treatment time of 20-30s.
Furthermore, the drying temperature of the stirring part is 100-105 ℃, and the drying time is 2-3 h.
The preparation method of the fiber asphalt mucilage of the stirring part comprises the following steps:
(1) heating asphalt and mineral powder to 175 +/-5 ℃ for later use;
(2) adding the dispersed fiber into asphalt for 3 times, stirring for the first time for 2-3min, stirring for the second time for 2-3min, and stirring for the third time for 3-5 min;
(3) adding the mineral powder into the fiber asphalt mixture, and stirring for 8-10 min.
Compared with the traditional method, the method has the following benefits:
(1) on the premise of realizing uniform dispersion of basalt fibers in asphalt mortar, the mixing time of the fibers and asphalt is effectively shortened, and the asphalt is prevented from aging.
(2) On the premise of realizing the uniform dispersion of basalt fibers in asphalt cement, the shearing damage of the fibers is effectively avoided, and the length grading of the fibers is ensured.
(3) On the premise of realizing uniform dispersion of basalt fibers in asphalt cement, the surface characteristics of the fibers are effectively ensured, and the fiber-asphalt interface is effectively bonded.
Drawings
Fig. 1 is a schematic view of a basalt fiber dispersion apparatus of the present invention.
Figure 2 is a schematic view of a container of the present invention.
Fig. 3 is a schematic view of the rotating platform of the present invention.
Fig. 4 is a schematic view of a curved type stirring blade of the present invention.
In the figure: 1, a bracket; 2, adjusting a button; 3, a servo motor; 4, a transmission rod; 5, rotating the platform; 6 stirring blades; 7, a container; 8, collecting materials; 9 a base; 10, a wedge-shaped bulge; 11, pattern projection; 12 screw holes; 13 rotor.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1, the basalt fiber dispersion apparatus and the fiber asphalt cement preparation method disclosed by the present invention are characterized in that the fiber dispersion apparatus comprises: the stirring device comprises a driving part, a stirring part, a container and a support, wherein the driving part of the stirring part comprises a servo motor and a transmission rod, the stirring part comprises a rotating platform and stirring blades, the driving part and the stirring part are connected on the support and can be adjusted, the container is fixed on a support groove through a protrusion, and aggregate is preset in the container. And (3) carrying out ultrasonic treatment on the dispersed and bulked basalt fibers, then drying, finally adding the treated fibers into asphalt in batches, and adding mineral powder for mixing.
The stirring portion support base is equipped with 4 rectangle recesses, and the horizontal pole position is adjustable.
As shown in figure 2, the bottom of the container of the stirring part is provided with 4 rectangular bulges, the inner wall of the container is provided with pattern bulges, and the built-in aggregate has the grain diameter of 2.36-4.75 mm.
As shown in FIG. 3, the outer ring of the rotary platform of the stirring part is connected with the inner ring through a rotor, and the inner ring is provided with 6 screw holes.
As shown in fig. 4, the stirring blades of the stirring section were curved, and 6 stirring blades were provided in total.
The ultrasonic treatment of the stirring part has a sonic frequency of 20-30KHz and a treatment time of 20-30s
The drying temperature of the stirring part is 100-
The preparation method of the fiber asphalt mucilage of the stirring part comprises the following steps:
(1) heating asphalt and mineral powder to 175 +/-5 ℃ for later use;
(2) adding the dispersed fiber into asphalt for 3 times, stirring for the first time for 2-3min, stirring for the second time for 2-3min, and stirring for the third time for 3-5 min;
(3) adding the mineral powder into the fiber asphalt mixture, and stirring for 8-10 min.
Examples
The servo motor 3 is fixed on the bracket 1, the container 7D is 15cm, the container L is 18cm, the container is fixed on the groove of the bracket base 9 through the wedge-shaped bulge 10, and the aggregate 8 is placed in the container in advance. Stirring vane 6 is fixed on screw hole 12 of rotary platform through the nut, and transfer line 4 one end is connected in rotary platform 5, and the other end is connected in servo motor 3, removes adjusting knob 2 and makes it be fixed in suitable position.
Weighing a certain amount of SBS modified asphalt and mineral powder, and placing in an oven at 175 ℃ for baking for 4 hours. Weighing a certain amount of basalt fibers, putting the basalt fibers into a dispersing device preset with 2.36-4.75mm aggregates, starting a power supply, taking out the fibers after dispersing for 90s, putting the fibers into an ultrasonic instrument, setting the frequency to be 30KHz, treating for 25s, and removing fine fibers and surface impurities. And taking out the dispersed fibers, putting the fibers in an oven at 103 ℃, and drying for 2 h.
Weighing 45g of basalt fiber, 500g of SBS modified asphalt and 350g of mineral powder after dispersing and drying treatment. The weighed asphalt is poured into a mixing pot, and the bottom of the mixing pot is heated by an electric furnace to keep the temperature at 170 ℃. Starting a stirrer, adding 15g of basalt fibers for the first time, and stirring for 3 min; adding 15g of basalt fibers for the second time, and stirring for 3 min; adding 15g of basalt fiber for the third time, and stirring for 5 min. Then the mineral powder is slowly added and stirred for 10 min. Pouring into a test mold for later use.
Claims (9)
1. A basalt fiber dispersion apparatus, comprising: the stirring device comprises a bracket, and a driving part and a stirring part which are connected with the bracket and can be adjusted;
the driving part comprises a servo motor and a transmission rod, and the stirring part comprises a rotating platform and stirring blades;
the container is fixed on the groove of the bracket through the bulge on the container, and the inside of the container is preset with aggregate.
2. The basalt fiber dispersion assembly of claim 1, wherein the rack mount is provided with 4 rectangular recesses and the rack bar is adjustable in position.
3. The basalt fiber dispersion device according to claim 1, wherein the bottom of the container is provided with 4 rectangular protrusions, the inner wall of the container is provided with pattern protrusions, and the built-in aggregate has a particle size of 2.36 to 4.75 mm.
4. The basalt fiber dispersion device according to claim 1, wherein the rotary platform is provided with an outer ring and an inner ring, and is connected by a rotor, and the inner ring is provided with 6 screw holes.
5. The basalt fiber dispersion device according to claim 1, wherein the agitating blade is of a curved type having 6 blades in total.
6. The basalt fiber dispersion assembly of claim 1 wherein the vessel performs: and (3) carrying out ultrasonic treatment on the dispersed and bulked basalt fibers, then drying, finally adding the treated fibers into asphalt in batches, and adding mineral powder for mixing.
7. The basalt fiber dispersion device according to claim 6, wherein the ultrasonic treatment has a sonic frequency of 20 to 30KHz and a treatment time of 20 to 30s.
8. The basalt fiber dispersion device according to claim 6, wherein the drying temperature is 100 ℃ and 105 ℃, and the drying time is 2-3 h.
9. The method for preparing fiber asphalt cement according to any one of claims 1 to 8, wherein the method for preparing fiber asphalt cement comprises the steps of:
(1) heating asphalt and mineral powder to 175 +/-5 ℃ for later use;
(2) adding the dispersed fiber into asphalt for 3 times, stirring for the first time for 2-3min, stirring for the second time for 2-3min, and stirring for the third time for 3-5 min;
(3) adding the mineral powder into the fiber asphalt mixture, and stirring for 8-10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011315816.5A CN112569821A (en) | 2020-11-22 | 2020-11-22 | Basalt fiber dispersing device and fiber asphalt mucilage preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011315816.5A CN112569821A (en) | 2020-11-22 | 2020-11-22 | Basalt fiber dispersing device and fiber asphalt mucilage preparation method |
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| CN112569821A true CN112569821A (en) | 2021-03-30 |
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| CN202011315816.5A Pending CN112569821A (en) | 2020-11-22 | 2020-11-22 | Basalt fiber dispersing device and fiber asphalt mucilage preparation method |
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Cited By (1)
| 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 |
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| WO1984002709A1 (en) * | 1983-01-14 | 1984-07-19 | Manville Service Corp | Diatomite-modified pavement |
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| CN103007801A (en) * | 2012-12-04 | 2013-04-03 | 山东泰德新能源有限公司 | Pitch mixing and stirring device |
| CN203393039U (en) * | 2013-08-25 | 2014-01-15 | 牡丹江金石玄武岩纤维有限公司 | Basalt chopped fiber structure for asphalt concrete |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Application publication date: 20210330 |