CN116553893B - Road sound absorption board and preparation method thereof - Google Patents
Road sound absorption board and preparation method thereof Download PDFInfo
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- CN116553893B CN116553893B CN202310435213.6A CN202310435213A CN116553893B CN 116553893 B CN116553893 B CN 116553893B CN 202310435213 A CN202310435213 A CN 202310435213A CN 116553893 B CN116553893 B CN 116553893B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 40
- 239000004568 cement Substances 0.000 claims abstract description 31
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010954 inorganic particle Substances 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 13
- 238000013329 compounding Methods 0.000 claims abstract description 12
- 238000009740 moulding (composite fabrication) Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 12
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 239000011859 microparticle Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000003469 silicate cement Substances 0.000 claims description 6
- 206010070834 Sensitisation Diseases 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000008313 sensitization Effects 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 abstract description 4
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001723 curing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229920006332 epoxy adhesive Polymers 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
-
- 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
- C04B14/02—Granular materials, e.g. microballoons
-
- 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
- C04B28/06—Aluminous cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/615—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- 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
- C04B2111/52—Sound-insulating materials
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/807—Luminescent or fluorescent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a road sound absorption board and a preparation method thereof, belonging to the technical field of sound barriers. The road sound absorbing plate is formed by integrally forming, pressing and compounding a noctilucent particle sound absorbing plate and an inorganic particle sound absorbing plate; wherein the noctilucent particle sound absorbing plate is formed by mixing and stirring noctilucent stone, composite noctilucent cementing material and water according to the mass ratio of (4-6) 1 (0.10-0.30) and pressing; the inorganic particle sound absorbing board is formed by mixing and stirring round sand, quick-hardening composite ash cement and water according to the mass ratio of (4-6) 1 (0.10-0.30) and pressing; the preparation method of the road acoustic board comprises the steps of fixing the prefabricated noctilucent particle acoustic board at a corresponding position in a road acoustic board mould, pouring inorganic particle acoustic board mixture slurry, pressing and integrally forming, hardening and demoulding; the road sound absorbing board can realize night road guiding function without electrifying, has good sound absorption and decoration effects, and simultaneously shows excellent weather resistance.
Description
Technical Field
The invention relates to a road sound absorption board and a preparation method thereof, belonging to the technical field of sound barriers.
Background
With the rapid development of cities, residents have higher and higher requirements on acoustic environments, and environmental noise pollution prevention and control work is also more and more important. In recent years, due to rapid development of construction of high-speed railways, highways, urban overhead roads and urban light rails and rapid increase of the number of urban motor vehicles, traffic noise problems become serious day by day, and the problems have become one of the most serious and most extensive pollution affecting people's life.
The sound barrier is used as a main measure for sound insulation and noise reduction, and is widely applied along with the great investment of highway and railway construction engineering. The road sound absorbing board is the most important sound absorbing unit of sound barrier, and the use amount is bigger and the application range is wider and bigger. At present, most of sound absorption boards are basically manufactured by adopting epoxy adhesives to bond single-stage matched sand grains, pressing and forming and then performing high-temperature curing due to the requirements of decoration, sound absorption effect and the like; the method, although achieving the decorative and sound absorbing effects of the particulate sound absorbing panel, still has the following problems: (1) Because of the adoption of the organic adhesive, the adhesive is easy to age and has poor weather resistance; (2) high-temperature heat curing leads to high energy consumption and large carbon emission; (3) The conventional particles are only used as sound absorption particle boards, and have single functions.
The conventional method for preparing the noctilucent road in the prior art is to compound and stir common silicate cement and noctilucent stone, press and mold, and then spray retarder; after the mixture is integrally hardened, flushing the surface cement slurry to expose the noctilucent stone, thereby realizing noctilucent effect; however, the method has the defects that the whole steps are complicated, the spraying retarder and the flushing time are not well controlled, the bonding effect of cement slurry on noctilucent stones cannot be realized, noctilucent Dan Yi falls off, and the weather resistance is poor.
Disclosure of Invention
Aiming at the defects of easy aging, poor weather resistance and single use function of the sound absorbing plate in the prior art, one of the purposes of the invention is to provide a road sound absorbing plate which is formed by compounding a noctilucent microparticle sound absorbing plate and an inorganic microparticle sound absorbing plate, does not need to adopt an organic adhesive, is not easy to age and has strong weather resistance, and has good sound absorbing performance and luminous guiding function.
The second purpose of the invention is to provide a preparation method of the road acoustic board, which has simple process, does not need high-temperature maintenance, does not need retarder spraying and subsequent flushing steps, and saves energy and reduces emission.
The aim of the invention is achieved by the following technical scheme.
The road sound absorbing board is formed by integrally forming, pressing and compounding a noctilucent particle sound absorbing board and an inorganic particle sound absorbing board;
The noctilucent particle sound absorbing board is formed by uniformly mixing and pressing noctilucent stones capable of accumulating heat and emitting light, composite noctilucent cementing materials and water according to the mass ratio of (4-6) 1 (0.10-0.30); wherein the composite noctilucent cementing material is formed by compositing (by mass ratio) white silicate cement, sulphoaluminate cement, noctilucent powder of noctilucent Dan Tongse, a water reducing agent and boric acid (0.05-0.30), and (2-5), and (0.005-0.05) and (0.001-0.01);
the inorganic particle sound absorbing plate is formed by uniformly mixing and pressing round sand, quick-hardening composite ash cement and water according to the mass ratio of (4-6) 1 (0.10-0.30); wherein the rapid hardening composite ash cement is formed by compounding P.O 42.5 cement, sulphoaluminate cement and boric acid according to the mass ratio of 1 (0.05-0.30) to 0.001-0.01.
Preferably, the mesh number of the noctilucent powder is 200-400 mesh, the sensitization time is more than 30min, and the noctilucent powder can continuously emit light for more than 12 hours.
Preferably, the inorganic particle sound absorbing plate is formed by uniformly mixing and pressing round sand, quick-hardening composite ash cement and water according to the mass ratio of (4-5) 1 (0.20-0.28).
Preferably, the water reducing agent is a polycarboxylate water reducing agent.
Preferably, the noctilucent microparticle sound absorbing panel is in the shape of an arrow.
The invention relates to a preparation method of a road acoustic board, which comprises the following steps:
(1) Weighing noctilucent stone, composite noctilucent cementing material and water according to mass ratio, and then uniformly mixing and stirring to obtain noctilucent microparticle acoustic board mixture; pouring the mixture into a noctilucent particle sound-absorbing plate mould for compression molding and film covering maintenance to obtain a noctilucent particle sound-absorbing plate with a mould shape;
(2) Weighing the round sand, the quick-hardening composite ash cement and water according to the mass ratio, and uniformly mixing and stirring to obtain an inorganic particle sound-absorbing plate mixture;
(3) Placing the noctilucent particle sound absorbing plate obtained in the step (1) at a corresponding position in a road sound absorbing plate die, uniformly pouring the inorganic particle sound absorbing plate mixture obtained in the step (2) into the residual space of the road sound absorbing plate die, and pressing to form an integral; the inorganic particle sound-absorbing board mixture can not cover and pollute the noctilucent particle sound-absorbing board in the pouring and pressing processes;
(4) And (5) demoulding after hardening to obtain the road sound absorption board.
Advantageous effects
(1) The invention provides a road sound absorption board which adopts a pure inorganic system material, does not need high-temperature maintenance, is not easy to age, has excellent weather resistance, has good sound absorption and decoration effects, and can realize a night road guiding function without electrifying.
(2) The invention provides a preparation method of a road sound absorption board, which is characterized in that a noctilucent particle sound absorption board is obtained by mixing and pressing a composite noctilucent cementing material, noctilucent stone and water; the composite noctilucent cementing material has high bonding strength, can firmly bond noctilucent stones in the inorganic particle sound absorption board, does not need to spray retarder and rinse, overcomes the defects that noctilucent Dan Yi falls off, has poor weather resistance and is difficult to control when the traditional common silicate cement and noctilucent stones are mixed and stirred to prepare noctilucent concrete materials, and has simple steps; in addition, the composite noctilucent gel material can also enhance the luminous effect of the noctilucent particle sound absorbing plate, so that the noctilucent particle sound absorbing plate has the function of night guidance of whole body luminescence.
(3) The invention provides a preparation method of a road sound-absorbing board, which adopts quick-hardening inorganic ash cement to replace the traditional organic adhesive, and the inorganic particulate sound-absorbing board is obtained after mixing and pressing with round sand and water; according to the method, the pure inorganic system inorganic ash cement is adopted to replace the traditional epoxy adhesive, so that the prepared particulate sound-absorbing board has good weather resistance in the presence of coworkers with good sound-absorbing performance, high-temperature heat curing is not needed, the process is simple, the quick turnover of a die is realized, the heat energy consumption and the material cost are obviously reduced, and the method is low-carbon and environment-friendly.
Drawings
FIG. 1 is a view of a road acoustic panel according to the present invention;
wherein, 1-inorganic particle acoustic board, 2-night light particle acoustic board.
Detailed Description
The technical aspects of the present invention will be clearly and fully described in connection with the following examples, which are conventional processes unless otherwise indicated, and which are commercially available from the public unless otherwise indicated.
The following test was performed on the road acoustic panel prepared in the following examples:
(1) Sound absorption coefficient: testing was performed according to T/CADBM-2019 particulate acoustical panel;
(2) Flexural strength: GB/T17671-2021 test method for cement mortar Strength test (ISO method).
Example 1
As shown in fig. 1, the road sound absorbing plate is formed by integrally molding, pressing and compounding a noctilucent particle sound absorbing plate 2 and an inorganic particle sound absorbing plate 1;
the noctilucent particle sound absorbing board 2 is formed by uniformly mixing and stirring green noctilucent stones capable of storing heat and emitting light, a composite noctilucent cementing material and water according to a mass ratio of 4:1:0.1, and then pressing; the composite noctilucent cementing material is formed by compounding white silicate cement, sulphoaluminate cement, green noctilucent powder, a polycarboxylate water reducer and boric acid according to the mass ratio of 1:0.05:2:0.005:0.001; the mesh number of the green noctilucent powder is 200-400 meshes, the sensitization time is more than 30min, and the green noctilucent powder can continuously emit light for more than 12 hours;
The inorganic particle sound absorbing plate 1 is formed by uniformly mixing and stirring round sand, quick-hardening composite ash cement and water according to the mass ratio of 4:1:0.2, and then pressing; wherein the rapid hardening composite ash cement is formed by compounding P.O42.5 cement, sulphoaluminate cement and boric acid according to the mass ratio of 1:0.05:0.001.
The method for preparing the road acoustic board in the embodiment comprises the following steps:
(1) Weighing noctilucent stone, composite noctilucent cementing material and water according to mass ratio, and then uniformly mixing and stirring to obtain noctilucent microparticle acoustic board mixture; pouring the mixture into an arrow-shaped noctilucent particle sound-absorbing plate mold, pressing and forming, and laminating and curing to obtain an arrow-shaped noctilucent particle sound-absorbing plate 2;
(2) Weighing the round sand, the quick-hardening composite ash cement and water according to the mass ratio, and uniformly mixing and stirring to obtain an inorganic particle sound-absorbing plate mixture;
(3) Placing the arrow-shaped noctilucent particle sound absorbing plate 2 obtained in the step (1) in a road sound absorbing plate mold, wherein the road sound absorbing plate mold is in a cuboid shape, and grooves matched with the noctilucent particle sound absorbing plate 2 in size and shape are reserved at the bottom of the mold and are used for placing the noctilucent particle sound absorbing plate 2; then uniformly pouring the inorganic particle sound-absorbing plate mixture obtained in the step (2) into the residual space of the road sound-absorbing plate mould, and pressing and forming; the luminous particle sound-absorbing plate 2 cannot be covered and polluted in the process of pouring and pressing the inorganic particle sound-absorbing plate mixture;
(4) And (5) demoulding after hardening to obtain the road sound absorption board.
In the road sound absorbing plate prepared in the embodiment 1, the arrow-shaped noctilucent particle sound absorbing plate has a noctilucent guiding function, and the continuous luminous time at night is more than 12 hours; the sound absorption coefficient and the plate body flexural strength of the road sound absorption plate are tested, and the test result shows that the sound absorption coefficient of the road sound absorption plate is 0.58, the plate body flexural strength is 5.5MPa, good sound absorption performance is shown, and the plate body flexural strength is high, the bonding strength is good, and the weather resistance is good.
Example 2
As shown in fig. 1, the road sound absorbing board is formed by compounding a noctilucent particle sound absorbing board 2 and an inorganic particle sound absorbing board 1;
The noctilucent particle sound absorbing board 2 is formed by uniformly mixing and stirring green noctilucent stones capable of storing heat and emitting light, a composite noctilucent cementing material and water according to a mass ratio of 6:1:0.30, and then pressing; the composite noctilucent cementing material is formed by compounding white silicate cement, sulphoaluminate cement, green noctilucent powder, a water reducing agent and boric acid according to the mass ratio of 1:0.30:5:0.05:0.01; the mesh number of the noctilucent powder is 200-400 meshes, the sensitization time is more than 30min, and the noctilucent powder can continuously emit light for more than 12 hours;
The inorganic particle sound absorbing plate 1 is formed by uniformly mixing and stirring round sand, quick-hardening composite ash cement and water according to the mass ratio of 5:1:0.28, and then pressing; wherein the rapid hardening composite ash cement is formed by compounding P.O42.5 cement, sulphoaluminate cement and boric acid according to the mass ratio of 1:0.30:0.01.
The method for preparing the road acoustic board in the embodiment comprises the following steps:
(1) Weighing noctilucent stone, composite noctilucent cementing material and water according to mass ratio, and then uniformly mixing and stirring to obtain noctilucent microparticle acoustic board mixture; pouring the mixture into an arrow-shaped noctilucent particle sound-absorbing plate mold, pressing and forming, and laminating and curing to obtain an arrow-shaped noctilucent particle sound-absorbing plate 2;
(2) Weighing the round sand, the quick-hardening composite ash cement and water according to the mass ratio, and uniformly mixing and stirring to obtain an inorganic particle sound-absorbing plate mixture;
(3) Placing the arrow-shaped noctilucent particle sound absorbing plate 2 obtained in the step (1) at a corresponding position in a road sound absorbing plate mold, wherein the road sound absorbing plate mold is in a cuboid shape, and a groove matched with the noctilucent particle sound absorbing plate 2 in size and shape is reserved at the bottom of the mold for placing the noctilucent particle sound absorbing plate 2; then uniformly pouring the inorganic particle sound-absorbing plate mixture obtained in the step (2) into the residual space of the road sound-absorbing plate mould, and pressing and forming; the luminous particle sound-absorbing plate 2 cannot be covered and polluted in the process of pouring and pressing the inorganic particle sound-absorbing plate mixture;
(4) And (5) demoulding after hardening to obtain the road sound absorption board.
In the road sound absorbing plate prepared in the embodiment 2, the arrow-shaped noctilucent particle sound absorbing plate has a noctilucent guiding function, and the continuous luminous time at night is more than 12 hours; the sound absorption coefficient and the plate body flexural strength of the road sound absorption plate are tested, and the test result shows that the sound absorption coefficient of the road sound absorption plate is 0.52, the plate body flexural strength is 5.1MPa, good sound absorption performance is shown, and the plate body flexural strength is high, the bonding strength is good, and the weather resistance is good.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a road acoustic board which characterized in that: the road sound absorbing plate is formed by integrally forming, pressing and compounding a noctilucent particle sound absorbing plate and an inorganic particle sound absorbing plate;
The noctilucent particle sound absorbing board is formed by uniformly mixing and pressing noctilucent stones, composite noctilucent cementing materials and water according to the mass ratio of (4-6): 1 (0.10-0.30); wherein the composite noctilucent cementing material is formed by compositing (by mass ratio) white silicate cement, sulphoaluminate cement, noctilucent powder of noctilucent Dan Tongse, a water reducing agent and boric acid (0.05-0.30), and (2-5), and (0.005-0.05) and (0.001-0.01);
the inorganic particle sound absorbing plate is formed by uniformly mixing and pressing round sand, quick-hardening composite ash cement and water according to the mass ratio of (4-6) 1 (0.10-0.30); wherein the rapid hardening composite ash cement is formed by compounding P.O 42.5 cement, sulphoaluminate cement and boric acid according to the mass ratio of 1 (0.05-0.30) to 0.001-0.01.
2. A road acoustic panel as claimed in claim 1, wherein: the mesh number of the noctilucent powder is 200-400 meshes, the sensitization time is more than 30min, and the noctilucent powder can continuously emit light for more than 12 hours.
3. A road acoustic panel as claimed in claim 1 or 2, wherein: the inorganic particle sound absorbing board is formed by mixing and uniformly stirring round sand, quick-hardening composite ash cement and water according to the mass ratio of (4-5) 1 (0.20-0.28) and pressing.
4. A road acoustic panel as claimed in claim 1, wherein: the water reducer is a polycarboxylate water reducer.
5. A road acoustic panel as claimed in claim 1, wherein: the noctilucent particle sound absorbing plate is in an arrow shape.
6. A method of producing a road acoustic panel as claimed in any one of claims 1 to 5, characterized in that: the method comprises the following steps:
(1) Weighing noctilucent stone, composite noctilucent cementing material and water according to mass ratio, and then uniformly mixing and stirring to obtain noctilucent microparticle acoustic board mixture; pouring the mixture into a noctilucent particle sound-absorbing plate mould for compression molding and film covering maintenance to obtain a noctilucent particle sound-absorbing plate with a mould shape;
(2) Weighing the round sand, the quick-hardening composite ash cement and water according to the mass ratio, and uniformly mixing and stirring to obtain an inorganic particle sound-absorbing plate mixture;
(3) Placing the noctilucent particle sound absorbing plate at a corresponding position in a road sound absorbing plate die, uniformly pouring inorganic particle sound absorbing plate mixture into the residual space of the road sound absorbing plate die, and pressing to form an integral; the inorganic particle sound-absorbing board mixture can not cover and pollute the noctilucent particle sound-absorbing board in the pouring and pressing processes;
(4) And (5) demoulding after hardening to obtain the road sound absorption board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310435213.6A CN116553893B (en) | 2023-04-21 | 2023-04-21 | Road sound absorption board and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105803961A (en) * | 2016-03-22 | 2016-07-27 | 扬州大学 | Active powder concrete noise barrier |
| CN107806023A (en) * | 2017-09-07 | 2018-03-16 | 广州市泰宇科技发展有限公司 | Sound barrier and its mounting structure |
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| JPH09132474A (en) * | 1995-11-06 | 1997-05-20 | Shinko Kosen Kogyo Kk | Board capable of absorbing sound and conditioning humidity and its production |
| CN110004846A (en) * | 2019-04-30 | 2019-07-12 | 江苏新光环保工程有限公司 | A kind of high-strength light environment-friendly type non-metal sound barrier |
| CN112608111A (en) * | 2021-01-15 | 2021-04-06 | 中国铁路设计集团有限公司 | Metal sound barrier ceramsite sound absorption plate and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105803961A (en) * | 2016-03-22 | 2016-07-27 | 扬州大学 | Active powder concrete noise barrier |
| CN107806023A (en) * | 2017-09-07 | 2018-03-16 | 广州市泰宇科技发展有限公司 | Sound barrier and its mounting structure |
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