CN208501528U - A kind of sound insulation screen board for highway - Google Patents
A kind of sound insulation screen board for highway Download PDFInfo
- Publication number
- CN208501528U CN208501528U CN201820581058.3U CN201820581058U CN208501528U CN 208501528 U CN208501528 U CN 208501528U CN 201820581058 U CN201820581058 U CN 201820581058U CN 208501528 U CN208501528 U CN 208501528U
- Authority
- CN
- China
- Prior art keywords
- surface layer
- sound
- sound insulation
- screen board
- foaming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Building Environments (AREA)
Abstract
The utility model discloses a kind of sound insulation screen boards for highway, including screen board ontology and its internal cavities, screen board ontology includes the sound absorption surface layer of side and the sound insulation surface layer of opposite side, adhesive layer is equipped between the surface layer that absorbs sound and sound insulation surface layer, sound absorption surface layer is sound-absorbing porous material, and sound insulation surface layer is that glass ceramic material is melted in foaming.The sound insulation screen board is bonded by sound absorption surface layer and sound insulation surface layer, sound absorption surface layer is sound-absorbing porous material, sound insulation surface layer is that glass ceramics are melted in the foaming of closed pore, by allowing noise to enter sound absorption surface layer and to greatest extent the sound energy of the incoming sound absorption surface layer of absorption, allow again sound wave it is few as far as possible penetrate sound insulation surface layer, can achieve the effect that maximum sqouynd absorption lowering noise.
Description
Technical field
The utility model relates to the technical field of highway sound insulation protective screen, in particular to a kind of sound insulation for highway
Screen board.
Background technique
As China's freeway net is gradually built up, national large number of road traffic main line two sides ambient noise value daytime
Between more than 70dB, night is more than 55dB, affect Highways ' resident work normally and learning life.Acoustic barrier is building
Between sound source and receiving station, the noise barrier with sound insulating layer made of close material.It is to guarantee transmission sound that it, which is acted on,
More much lower than diffraction sound, so that noise be made to have apparent additional attenuation in communication process, the acoustic barrier of the prior art is general
Can noise reduction 5dB, but attenuation be no more than 20dB.
Utility model content
The purpose of this utility model is to provide a kind of sound insulation screen boards for highway, solve the above-mentioned prior art and ask
One or more in topic.
The utility model provides a kind of sound insulation screen board for highway, including screen board ontology and its internal cavities, screen
Plate ontology includes the sound absorption surface layer of side and the sound insulation surface layer of opposite side, is equipped with adhesive layer between the surface layer that absorbs sound and sound insulation surface layer,
Sound absorption surface layer is sound-absorbing porous material, and sound insulation surface layer is that glass ceramic material is melted in foaming.
In some embodiments, foaming is melted glass ceramic material and is prepared from the following raw materials in parts by weight: 70-85 parts profound
Military mountain flour, 15-30 parts of fluxing agent, 10-20 parts of pore creating agent, 1-5 parts of polymerization material and 1-5 parts of mineralizer.
Wherein, Black Warrior stone category basic volcanic rocks are a kind of mafic effusive rocks, and chemical component is similar to gabbro, SiO2
Changes of contents is between 45%~52%, K2O+Na2O content is slightly higher compared with intrusive rock, CaO, Fe2O3+ FeO, content of MgO relatively invade
Rock is slightly lower.Forming basaltic most mineral is feldspar, pyroxene and olivine, wherein.Feldspar hardness 6-6.5, pyroxene hardness
5-6, olivine hardness 6-7, hardness relative to Mohs' hardness 3-5 marble, Mohs' hardness 1-2 limestone and
Dolomite etc. will be high.Black Warrior stone bulk density is 2.8~3.3g/cm3, compact structure, compressive strength is very big, up to
300MPa。
In some embodiments, the grain fineness of Black Warrior mountain flour controls more than 325 mesh.Since Black Warrior stone hardness is high,
It needs to be crushed to 325 mesh or more by vertical mill.The partial size of Black Warrior mountain flour is smaller, and it is strong that glass ceramics are melted in the foaming finally obtained
Degree is higher, and uniformity is better.
In some embodiments, fluxing agent is one of porcelain stone powder, spodumene powder or barium carbonate or a variety of, it is described at
Hole material is calcium carbonate, and the polymerization material is attapulgite or bauxite, and the mineralizer is dolomite.
Wherein, fluxing agent for reducing mixture fusion temperature.Porcelain stone is a kind of by quartz, sericite, and has and include
Feldspar, the silicate rock mineral of aluminum oxide etc..Spodumene is a kind of chemical substance, and molecular formula is Li2O·Al2O3·
4SiO2。
Wherein, calcium carbonate pore creating agent decomposes during high temperature firing and generates CO2Material is caused to foam.
Wherein, adhesive effect when polymerization material is for mixture molding.Attapulgite is also known as palygorskite or Palygorskite, is
A kind of aqueous rich magnesium silicate clay mineral having chain layer structure.Bauxite is also known as alumina or bauxite, and main component is oxygen
Change aluminium, is the hydrated alumina containing impurity, is a kind of earthy mineral.
Wherein, mineralizer shortens the foaming time of mixture as catalyst.
In some embodiments, the grain fineness of calcium carbonate is 80-150 mesh.And it is thin by the particle of control calcium carbonate
Degree, adjustable foam melt the pore size of the closed pore of glass ceramics.
Wherein, sound insulation surface layer be foam melt glass ceramic material preparation method the following steps are included:
S1, Black Warrior mountain flour is controlled its grain fineness more than 325 mesh by Vertical Mill；
S2, Black Warrior mountain flour, fluxing agent, pore creating agent, polymerization material and mineralizer are uniformly mixed and mixture is made, then will
Required granular material is made by molding or rolling in mixture；
S3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
S4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1000-1200 DEG C, and heating 50-70 minutes is carried out in the high temperature furnace that temperature is 1000-1200 DEG C, from height after the completion of heating
It takes out, is taken out in rear mold in warm furnace within natural cooling 10-12 hours, glass ceramics are melted in as foaming.
In some embodiments, sound-absorbing porous material is glass fibre woven roving, fiberglass surfacing mat, chopped strand
One of felt, continuous strand felt, glass wool cloth, perforated plywood, perforation fiber cement board are a variety of.
In some embodiments, adhesive layer is AB glue or thermosetting resin.
In some embodiments, thermosetting resin is furane resins, phenolic resin, unsaturated polyester resin, asphalt mixtures modified by epoxy resin
One or more of rouge.
Wherein, thermosetting resin is usually before curing liquid, can be flowed, so as to processing and fabricating, once solidify
At hard solid, state before curing cannot be returned, therefore using thermosetting resin as binder, bond effect is more
It is excellent.
Specifically, melting brushing AB glue or thermosetting resin on the outside of glass ceramics in foaming, then after the molding of glass ceramics is melted in foaming
By sound-absorbing porous material, such as glass fibre woven roving is pasted onto foaming and melts glass ceramics outside, after waiting it to solidify to get to every
Sound-screen plate.
The utility model has the advantages that the sound insulation screen board of the utility model embodiment is bonded by sound absorption surface layer and sound insulation surface layer, absorb sound
Surface layer is sound-absorbing porous material, and sound insulation surface layer is that glass ceramics are melted in the foaming of closed pore, simultaneously maximum by allowing noise to enter sound absorption surface layer
The sound energy of the incoming sound absorption surface layer of the absorption of limit, then allow sound wave it is few as far as possible penetrate sound insulation surface layer, maximum sound absorption can be reached and dropped
The effect made an uproar.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sound insulation screen board of embodiment 1；
Fig. 2 is that the microscopical picture of glass ceramics is melted in the foaming of embodiment 1；
Fig. 3 is the experimental data figure for testing 1 and 2；
Fig. 4 is the experimental data figure for testing 1,3 and 4；
Fig. 5 is the experimental data figure for testing 1,5 and 6.
Specific embodiment
The utility model is further described below with reference to embodiment.Following embodiment is only intended to clearly say
The performance of bright the utility model, and the following examples cannot be limited only to.
A kind of sound insulation screen board for highway, including screen board ontology and its internal cavities, the screen board ontology include
The sound absorption surface layer 30 of side and the sound insulation surface layer 10 of opposite side are equipped with adhesive layer between the sound absorption surface layer 30 and sound insulation surface layer 10
20, sound absorption surface layer 30 is sound-absorbing porous material, and sound insulation surface layer is that glass ceramic material is melted in 10 foaming.Wherein, sound absorption surface layer 30 towards
Highway.
Embodiment 1:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
A1, Black Warrior mountain flour is controlled its grain fineness in 325 mesh by Vertical Mill；
A2, by 70 parts of Black Warrior mountain flour, 15 parts of fluxing agent, 10 parts of pore creating agent, 1 part of polymerization material and 1 part of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by molding in mixture
Material, wherein cosolvent is porcelain stone powder, and pore creating agent is calcium carbonate, and polymerization material is attapulgite, and mineralizer is dolomite, calcium carbonate
Grain fineness be 80 mesh；
A3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
A4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1000 DEG C, and heating 70 minutes is carried out in the high temperature furnace that temperature is 1000 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 10 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 70mm, such as
The closed pore that 1-2mm is distributed in glass ceramics is melted in foaming shown in Fig. 2；
A5, melt brushing AB glue on the outside of glass ceramics in foaming, glass fibre woven roving is then pasted onto foaming and melts glass ceramics
Outside, wherein glass fibre woven roving arrives sound insulation screen board A after waiting it to solidify with a thickness of 30mm.
Embodiment 2:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
B1, Black Warrior mountain flour is controlled its grain fineness in 500 mesh by Vertical Mill；
B2, by 80 parts of Black Warrior mountain flour, 30 parts of fluxing agent, 20 parts of pore creating agent, 5 parts of polymerization material and 5 parts of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by rolling in mixture
Material, wherein cosolvent is the mixture of porcelain stone powder and spodumene powder, and the weight ratio of porcelain stone powder and spodumene powder is 1:1, pore creating agent
For calcium carbonate, the grain fineness of calcium carbonate is 150 mesh, and polymerization material is bauxite, and mineralizer is dolomite；
B3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
B4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1200 DEG C, and heating 50 minutes is carried out in the high temperature furnace that temperature is 1200 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 12 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 90mm；
After B5, foaming melt the molding of glass ceramics, melt brushing furane resins on the outside of glass ceramics in foaming, then by continuous strand felt
It is pasted onto foaming and melts glass ceramics outside, wherein continuous strand felt is 10mm, arrives sound insulation screen board B after waiting it to solidify.
Embodiment 3:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
C1, Black Warrior mountain flour is controlled its grain fineness in 400 mesh by Vertical Mill；
C2, by 75 parts of Black Warrior mountain flour, 25 parts of fluxing agent, 15 parts of pore creating agent, 2 parts of polymerization material and 2 parts of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by molding in mixture
Material, wherein cosolvent is the mixture of porcelain stone powder, spodumene powder and barium carbonate, the weight of porcelain stone powder, spodumene powder and barium carbonate
Than for 1:1:1, pore creating agent is calcium carbonate, the grain fineness of calcium carbonate is 100 mesh, and polymerization material is bauxite, and mineralizer is white clouds
Stone；
C3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
C4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1100 DEG C, and heating 60 minutes is carried out in the high temperature furnace that temperature is 1100 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 11 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 80mm；
After C5, foaming melt the molding of glass ceramics, melt brushwork epoxy resin on the outside of glass ceramics in foaming, then will perforate fiber water
Mud plate be pasted onto foaming melt glass ceramics outside, middle punch fiber cement board with a thickness of 20mm, wait its solidify after to get to every
Sound-screen plate C.
Comparative example 1:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
D1, Black Warrior mountain flour is controlled its grain fineness in 325 mesh by Vertical Mill；
D2, by 70 parts of Black Warrior mountain flour, 15 parts of fluxing agent, 10 parts of pore creating agent, 1 part of polymerization material and 1 part of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by molding in mixture
Material, wherein cosolvent is porcelain stone powder, and pore creating agent is calcium carbonate, and polymerization material is attapulgite, and mineralizer is dolomite, calcium carbonate
Grain fineness be 80 mesh；
D3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
D4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1000 DEG C, and heating 70 minutes is carried out in the high temperature furnace that temperature is 1000 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 10 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 100mm,
Foaming is directly melted into glass ceramics as sound insulation screen board E.
Comparative example 2:
A kind of preparation method of the sound insulation screen board for highway, directly will be with a thickness of the perforation fibre cement of 100mm
Plate is as sound insulation screen board E.
Comparative example 3:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
F1, Black Warrior mountain flour is controlled its grain fineness in 325 mesh by Vertical Mill；
F2, by 70 parts of Black Warrior mountain flour, 15 parts of fluxing agent, 10 parts of pore creating agent, 1 part of polymerization material and 1 part of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by molding in mixture
Material, wherein cosolvent is porcelain stone powder, and pore creating agent is calcium carbonate, and polymerization material is attapulgite, and mineralizer is dolomite, calcium carbonate
Grain fineness be 80 mesh；
F3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
F4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1000 DEG C, and heating 70 minutes is carried out in the high temperature furnace that temperature is 1000 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 10 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 50mm；
F5, melt brushing AB glue on the outside of glass ceramics in foaming, glass fibre woven roving is then pasted onto foaming and melts glass ceramics
Outside, wherein glass fibre woven roving arrives sound insulation screen board F after waiting it to solidify with a thickness of 50mm.
Comparative example 4:
A kind of preparation method of the sound insulation screen board for highway, comprising the following steps:
G1, Black Warrior mountain flour is controlled its grain fineness in 325 mesh by Vertical Mill；
G2, by 70 parts of Black Warrior mountain flour, 15 parts of fluxing agent, 10 parts of pore creating agent, 1 part of polymerization material and 1 part of mineralising
Agent is uniformly mixed by Agravicmixer is made mixture, then required graininess material is made by molding in mixture
Material, wherein cosolvent is porcelain stone powder, and pore creating agent is calcium carbonate, and polymerization material is attapulgite, and mineralizer is dolomite, calcium carbonate
Grain fineness be 80 mesh；
G3, granular material is put into the mold of required shape, wherein mold is coated with release agent, stacks molding；
G4, it molding material will be stacked is put into togerther in high temperature furnace with mold and be slowly heated, until the temperature of high temperature furnace reaches
To 1000 DEG C, and heating 70 minutes is carried out in the high temperature furnace that temperature is 1000 DEG C, take out from high temperature furnace after the completion of heating, from
So taken out in rear mold within cooling 10 hours, glass ceramics are melted in the as described foaming, wherein foaming melt glass ceramics with a thickness of 5mm；
G5, melt brushing AB glue on the outside of glass ceramics in foaming, glass fibre woven roving is then pasted onto foaming and melts glass ceramics
Outside, middle punch fiber cement board arrive sound insulation screen board G after waiting it to solidify with a thickness of 95mm.
Performance test:
Glass ceramics sample is melted in the foaming of embodiment and comparison to test, specific test method is as follows:
The test of highway noise
Sound barrier side will be installed in highway, within the scope of highway 50m, sensitive residential area is selected to carry out
Measurement selects terrace or corridor window, by the vertical face highway of tester, together range measurement bottom surface 1.2m with
On, it is equal with highway height.
Measurement persistently carries out 24 hours, is measured using third-octave spectrum analysis, system automatic reading, reads every 0.7s
A data are taken, every group of data about time-consuming 4min is measured.
Instrument used in testing is AWA6270+ noise analyzer, this instrument has noise statistics analysis and spectrum analysis
Module, spectrum analysis module are divided into octave spectrum analysis and third-octave spectrum analysis, and master is to be applied in this test
For the third-octave spectrum analysis of spectrum analysis module.Instrument is 1 grade of sound level meter, meets international standard and vertification regulation.Meet
Standard: 1 type of GB/T3785 and GB/T17181, IEC61672-20021 grades.
Experiment 1: without using sound insulation screen board, the noise on highway is monitored；
Experiment 2: using sound insulation screen board A, the noise on highway is monitored；
Experiment 3: using sound insulation screen board D, the noise on highway is monitored；
Experiment 4: using sound insulation screen board E, the noise on highway is monitored；
Experiment 5: using sound insulation screen board F, the noise on highway is monitored；
Experiment 6: using sound insulation screen board G, the noise on highway is monitored.
Experimental result:
As can be seen from Figure 3, experiment 2 using after sound insulation screen board A compared with experiment 1 is without using sound insulation screen board, average noise reduction 20dB
More than, noise reduction effect is obvious, and nearby residents can be from the noise effect of highway.
As can be seen from Figure 4, using sound insulation screen board D and experiment 4 using sound insulation screen board E, noise reduction effect is unobvious, average for experiment 3
Noise reduction 5dB or so, nearby residents are still by the noise effect of highway.Sound insulation screen board B is that glass ceramics, sound insulation are melted in only foaming
Screen board E is only porous material, both without the utility model embodiment 1 by foaming melt glass ceramics and porous material it is compound after
Sound insulation screen board excellent noise reduction effect.
As can be seen from Figure 5, using sound insulation screen board F and experiment 6 using sound insulation screen board G, noise reduction effect is unobvious, average for experiment 5
Noise reduction 10dB or so, nearby residents are still by the noise effect of highway.Sound insulation screen board F be 50mm foaming melt glass ceramics and
The porous material of 50mm is combined, and melts the thickness low LCL of glass ceramics due to foaming, and so that its sound insulation effect is deteriorated, causes its compound
Effect afterwards is not so good as embodiment 1；The foaming that sound insulation screen board G is 5mm melts glass ceramics and is combined with 95mm porous material, due to more
The absorbent treatment thickness low LCL of Porous materials makes its sound absorption effect be deteriorated, and the effect after causing its compound is not so good as embodiment 1.
Embodiment provided by the utility model provide a kind of sound insulation screen board lightweight for highway, it is waterproof,
Waterproof, anticorrosion.And the sound insulation screen board is bonded by sound absorption surface layer and sound insulation surface layer, sound absorption surface layer is sound-absorbing porous material,
Sound insulation surface layer is that glass ceramics are melted in the foaming of closed pore, by allowing noise to enter sound absorption surface layer and absorbing incoming sound absorption face to greatest extent
Layer sound energy, then allow sound wave it is few as far as possible penetrate sound insulation surface layer, can achieve the effect that maximum sqouynd absorption lowering noise.
The above statement is only the preferred embodiment of the utility model, it is noted that those skilled in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these also should be regarded as this reality
Within novel protection scope.
Claims (3)
1. a kind of sound insulation screen board for highway, which is characterized in that including screen board ontology and its internal cavities, the screen board
Ontology includes the sound absorption surface layer of side and the sound insulation surface layer of opposite side, is equipped with bonding between the sound absorption surface layer and sound insulation surface layer
Layer, the sound absorption surface layer are sound-absorbing porous material, and the sound insulation surface layer is that glass ceramic material is melted in foaming；
The sound-absorbing porous material is glass fibre woven roving, fiberglass surfacing mat, short-cut original silk silk felt, continuous strand felt, glass
One of glass silk cloth, perforated plywood, perforation fiber cement board are a variety of.
2. a kind of sound insulation screen board for highway according to claim 1, which is characterized in that the adhesive layer is AB
Glue or thermosetting resin.
3. a kind of sound insulation screen board for highway according to claim 1, which is characterized in that the sound absorption surface layer
With a thickness of 10-30mm, it is described sound insulation surface layer with a thickness of 70-90mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820581058.3U CN208501528U (en) | 2018-04-23 | 2018-04-23 | A kind of sound insulation screen board for highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820581058.3U CN208501528U (en) | 2018-04-23 | 2018-04-23 | A kind of sound insulation screen board for highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208501528U true CN208501528U (en) | 2019-02-15 |
Family
ID=65299446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820581058.3U Active CN208501528U (en) | 2018-04-23 | 2018-04-23 | A kind of sound insulation screen board for highway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208501528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487713A (en) * | 2018-04-23 | 2019-03-19 | 中集绿建环保科技有限公司 | A kind of sound insulation screen board for highway |
-
2018
- 2018-04-23 CN CN201820581058.3U patent/CN208501528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487713A (en) * | 2018-04-23 | 2019-03-19 | 中集绿建环保科技有限公司 | A kind of sound insulation screen board for highway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6664205B2 (en) | Porous, sound-absorbing ceramic moldings and method for production thereof | |
| CN113929390B (en) | Environment-friendly green concrete and preparation method thereof | |
| CN104294943B (en) | Composite evacuated heat insulating board of low alkali adhesive mortar and preparation method thereof | |
| CN102061652B (en) | Ecological slag permeable bricks and preparation method thereof | |
| CN103669233B (en) | A kind of supreme porous ceramics absorbent lined barrier and manufacture method thereof | |
| CN109487713A (en) | A kind of sound insulation screen board for highway | |
| CN110004846A (en) | A kind of high-strength light environment-friendly type non-metal sound barrier | |
| CN102795813B (en) | Dense-graded asphalt concrete with continuous skid-resistant and noise-reduction functions | |
| CN208501528U (en) | A kind of sound insulation screen board for highway | |
| CN112408923B (en) | Permeable compression-resistant concrete and preparation method thereof | |
| CN113321475B (en) | Pervious concrete for sponge city and preparation method thereof | |
| CN110981422A (en) | Glass waste residue ceramic water permeable brick and preparation process thereof | |
| CN109704652A (en) | A kind of environmentally friendly Recycled Asphalt Pavement of sound absorption and its preparation process | |
| CN115321860A (en) | Construction waste recycled aggregate surface modification and particle reinforcement method | |
| CN108911689A (en) | A kind of sound-absorbing material | |
| CN111704427B (en) | Inner wall partition board and preparation method thereof | |
| CN108678208A (en) | A kind of combined type gobo | |
| CN108678210A (en) | A kind of interior gobo | |
| CN113831151B (en) | Plant-growing pervious concrete prepared from foamed ceramic, and preparation method and application thereof | |
| CN205742702U (en) | A kind of landscape brick of sandwich | |
| CN108558284B (en) | Anti-delaminating and decoloring permeable brick and preparation method thereof | |
| JPH08217560A (en) | Sound absorption concrete, sound absorption concrete unit, sound absorption concrete block, sound absorption concrete wall using them and production of the concrete and block | |
| CN208669166U (en) | A kind of sound-insulation glass structure | |
| CN113321528B (en) | Full-ceramic sound barrier and preparation method thereof | |
| JPH0254305B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |