CN101818484A - Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof - Google Patents
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof Download PDFInfo
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- CN101818484A CN101818484A CN201010179541A CN201010179541A CN101818484A CN 101818484 A CN101818484 A CN 101818484A CN 201010179541 A CN201010179541 A CN 201010179541A CN 201010179541 A CN201010179541 A CN 201010179541A CN 101818484 A CN101818484 A CN 101818484A
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- polymer cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—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 magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a special silicon-magnesium-polymer cement acoustic panel of a road sound barrier and a preparation method thereof, belonging to a material for absorbing airborne noise. The acoustic panel is a flat rectangular solid in shape, and the frame of the acoustic panel is formed by one-step cast molding, wherein the bottom layer is closed, the surface layer is porous, and the intermediate layer is divided into double cavities and is filled with inorganic acoustic materials. The frame of the acoustic panel comprises the following component materials in parts by weight: 35-40 parts of MgO, 38-44 parts of MgCl2.6H2O, 0.5-0.6 part of H3PO4, 0.2-0.3 part of Na2PO4, 0.2-0.3 part of water-reducing dispersant NNO, 0.8-1.0 part of FeSO4.7H2O, 10-30 parts of organic polymer emulsion with the solid content of 40%, 11-13 parts of active SiO2 modifying agent, 9-11 parts of reinforcing fiber, 0.4-0.6 part of silicon aluminum waterproof structure modifying agent and an amount of water. The special silicon-magnesium-polymer cement acoustic panel has the advantages of no helogenation, no efflorescence, high strength, no deformation, good water resistance, weathering resistance, long service life and good acoustic absorption and sound insulation property. The service life of the cement acoustic panel can be more than 25 years.
Description
Technical field
The present invention is a kind of special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof.Belong to the noise absorbing material that is used for air-borne transmission, particularly a kind of portland cement polymer sound absorption sound insulating sheet material of road noise barrier special use.
Background technology
The modern industry civilization has been brought unprecedented noise, and noise and water pollution, air pollution and rubbish are listed as four big public hazards of Modern World environment.Especially the noise from the operation of vehicles such as speedway, high-speed railway, viaduct, subway, light rail not only makes people's worry, and the interference sleep hinders study, work and rest, influences health, and is difficult to thorough elimination.Setting up sound barrier is one of effective measure.
When running into barrier in the sound wave communication process, a part is reflected, and a part is absorbed, and some is by transmission and diffraction.The acoustic reflection coefficient of sound insulation type sound barrier is big, and sound transmission coefficient is very little, and is better to the noise reduction in the road outside, and the inboard noise of road then strengthens.The absorbing sound type sound barrier absorbs sound wave by the efficient sound absorption material on its surface, " eating up " partial noise, the acoustic environment of the inside and outside both sides of road improvement simultaneously.Therefore, the absorbing sound type sound barrier is the main developing direction of this area.
At present, sound barrier mainly contains kinds such as sawdust board, concrete slab, metal sheet, pearlite slab, glass epoxy.Wherein, the concrete slab manufacturing is simple, and cost is lower.Be used widely.Also there are the following problems but being used for aspect the plate property of road noise barrier:
1. sound absorption, sound insulation property is not good.
2. the cement based sound barrier panel produces and returns halogen, scum.
3. intensity is low, and is yielding.
4. poor water resistance.
5. weather resistance performance is poor, and application life is short.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art, and provide a kind of halogenation, frost mist free, intensity height, indeformable, water-tolerant, weather resistance, long service life, special silicon-magnesium-polymer cement acoustic panel of road sound barrier of sound absorption sound insulation value excellence and preparation method thereof.
Purpose of the present invention can reach by following measure:
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention is characterized in that:
1.. the acoustical board architectural feature: profile is the tabular cuboid, acoustical board framework one-time cast-forming, wherein, bottom sealing, surface layer porous, intermediate course two-chamber are also loaded inorganic sound absorption material;
2.. material characteristics: the inorganic sound absorption material of feature described in 1. is rock wool or glass wool; The acoustical board framework comprises following with component materials in parts by weight:
MgO????????????????????????????35～40
MgCl
2.6H
2O?????????????????????38～44
H
3PO
4??????????????????????????0.5～0.6
Na
2PO
4?????????????????????????0.2～0.3
Diminishing dispersing agent NNO 0.2～0.3
FeSO
4.7H
2O?????????????????????0.8～1.0
Organic polymer emulsion solid content 40% 10～30
Active SiO
2Modifier 11～13
Fortifying fibre 9～11
Structure modifier 0.4～0.6 that sial is water-fast.
Water is an amount of.
Under acoustical board of the present invention is inscribed before guaranteeing its mechanical property, take into account the surface density≤80Kg/m2 of sheet material, it is the tabular cuboid that acoustical board has adopted profile, acoustical board framework one-time cast-forming, wherein, bottom sealing, surface layer porous, intermediate course are designed to two-chamber, and load inorganic sound absorption material
By adopting the inner sound absorption construction of sound absorption material optimization can significantly improve acoustically effective.By top layer, bottom and intermediate course three layer construction, the density of every laminate differs, and sound impedance is changed, and forms gradient, makes sound wave reduce the sound absorption coefficient of corresponding each frequency of raising at every layer reflectance factor at the interface.
The variation of the pore structure by acoustical board also can be played the effect of the mixing noise reduction that sound wave can conduct.The mechanism characteristics of acoustical board has played the sound absorption of absorbent lined barrier, and sound-absorption coefficient (NPC) can reach more than 0.7 after tested.
During tradition magnesium cement is formed, as MgO and MgCl
2Reaction quantitative relationship imbalance will produce the phenomenon of returning halogen, scum.What is called is returned halogen and is meant MgCl
2The consumption surplus, the remaining magnesium chloride in the magnesium cement product after the sclerosis absorbs the moisture content in air or the environment, and the surface produces moist, and then overworks the globule and join together and form the phenomenon of trickling.If MgO consumption surplus except that loss intensity and generation volume expansion unstability, also can produce the surface dust of no intensity, this phenomenon is so-called scum.
Return halogen, scum is the great mass defect of magnesium cement product, except that influencing outward appearance, contaminated environment, also can cause magnesium cement product to reduce intensity, water resistance is poor.
MgO in the acoustical board frame material component of the present invention is foundation with the active MgO content, has the 5Mg (OH) of mechanical property with formation
2MgCl
28H
2The phase structure of O is a purpose, determines MgO and MgCl
2The reaction quantitative relationship, and follow the trail of in difference along with the active MgO content of light-burned MgO powder, adjust MgCl at any time
2The consumption of (setting accelerator), promptly so-called dynamic science is formed proportioning, causes MgO and MgCl
2Can reach and quantize reaction relation accurately, thereby stop to return halogen, scum phenomenon.
Add and contain active SiO
2Flyash or silicon ash, can make unreacted and have the salt that the MgO that influences soundness forms stable slightly solubility, and a series of aquation aggregation takes place, form the structure of similar French chalk man-made stone:
3MgO+4SiO
2+8H
2O——3MgO·4SiO
2·8H
2O
Contain active SiO
2Flyash, silicon ash, have pozzuolanic function, can form the afwillite gel down in the effect of magnesium hydration heat of cement (925J/gMgO, 30 days thermal discharge can reach 1387J/gMgO), to improve enhancings degree, prevent to be out of shape very favourable.
Active SiO in the acoustical board framework raw material components of the present invention
2Modifier can reduce volume contraction, increases stability, and (the flyash loose volume weight is 600-700g/m can to alleviate the weight of goods simultaneously
3).Therefore, flyash in the component or silicon ash have not only played the structure that has changed Cl-O-Mg, have improved function, and as inserts, have reduced the cost of silicon-magnesium polymer cement high-strength sound-absorbing material of the present invention.
Phosphatic adding in the acoustical board framework raw material components of the present invention has significantly improved its stability, durability.The works of the hardenite of cement is measured through the X diffractometer, and its structural formula is:
5MgO+MgCl
2+ 8H
2O---5Mg (OH)
2MgCl
28H
2O (being called for short 518 phases)
518 structures of non-modified present the needle bar shape crystalline solid, similar gypsum crystallization form, in water crystalline solid intert and adhere to can be destroyed, the crystalline solid pattern as shown in Figure 1, the therefore reduction that the intensity in water can be in various degree.
Adding phosphate just can change over acicular crystal with foliaceous and as a form of gel, plate-like crystal (shown in Fig. 2,3,4) and form the overlapping of crystal, and interspersed, adhesion constitutes the space structures net to improve the stability of 518 phases, also improves water resistance simultaneously.
Organic polymer latax in the acoustical board framework raw material components of the present invention and water-fast structure modifier of sial salic, silica and molysite, the anti-water additive that the three is compound.Wherein the organic polymer emulsion also has the obstruction capillary channel except the adding of polymer itself improves the intensity, changes pore structure, improve the effect of water resistance, make the water absorption rate of absorbing material of the present invention reduce by 80%, adhesive strength improves 1-4 doubly, and elongation per unit length improves 2-3 doubly.
Alumina in the acoustical board framework raw material components of the present invention and molysite, phosphate, owing to elements such as containing P.S.Al in the composition can form stable tetrahedral structure unit, it is overlapping to cause crystal to form foliaceous, the net structure that interts, thereby improve the stability of phase structure, also improved the water-resistance and the durability of acoustical board of the present invention.Wherein montmorillonite chance water can expand and form the space of 5 times of own vols, under the prerequisite of control dosage, can effectively change the pore structure of magnesium cement, effectively improves water resistance.
Magnesium cement composition moisture content is too high to be the reason that causes excessive moisture evaporation, and can not constant speed, evaporation uniformly.The contraction that causes is inconsistent, can cause distortion.In the acoustical board raw material components of the present invention, adopted the water reducing ability surfactant, reach the composition comprises water rate and reduce, and the incorporation degree that flows has improved, can reduce because of shrinking the inconsistent acoustical board distortion that causes.
In the acoustical board raw material components of the present invention, adopt many degree hand-delivers medium-alkali glass fibre that strengthens and the short PP fiber and crop stalk or the wood fiber that disperse to strengthen, jointly acoustical board enhancing and anticracking, anti-deformation have been handled, reached desirable anti-deformation effect.
The performance of each component in the raw material components of acoustical board of the present invention is coordinated mutually, additional, effect stack mutually, provides the quality material technical support for acoustical board of the present invention jointly.
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention is characterized in that; 1.. in the acoustical board architectural feature, described acoustical board adopts two-chamber, and surface layer has strip hole, the hole is interrupted and is not communicated with, and intermediate course is the orifice plate that has concave-convex type bar shaped interval in Kai Yuan hole.
2.. material characteristics: the acoustical board framework comprises following with component materials in parts by weight:
MgO????????????????????????36.76
MgCl
2.6H
2O?????????????????41.70
H
3PO
4??????????????????????0.55
Na
2PO
4?????????????????????0.27
Diminishing dispersing agent NNO 0.24
FeSO
4.7H
2O?????????????????0.94
Organic polymer emulsion solid content 40% 20
Flyash 12.38
Fortifying fibre 9.97
Swell soil or montmorillonite 0.5
Water is an amount of.
It is the disclosed optimized technical scheme of applicant.
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention, the polymer emulsion in the raw material components are a kind of in polyacrylate dispersion, epoxy resin latex, polyaminoester emulsion, the polyvinyl acetate emulsion.
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention, the active SiO in the component
2Modifier is flyash or silicon ash.
Any or its any two or more combinations in the short PP fiber that special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention, the fortifying fibre in the component be alkali containing glass fibre, disperse to strengthen, wood fiber, the crop branch fiber.
Special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention, the silicon-aluminum structure modifier in the component are a kind of or the two combinations in swell soil, the montmorillonite.
The preparation method of special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention is characterized in that comprising the steps:
1.. the preparation of compound saltwater brine
Will be according to the MgCl of prescription through accurately measuring
26H
2O, H
3PO
4, Na
2PO
4, diminishing dispersing agent NNO, FeSO
4.7H
2O, organic polymer emulsion and suitable quantity of water add in the compound saltwater brine preparation vessel, stir down it is dissolved fully after, filtration, standby;
2.. the preparation of slip
Will be according to MgO, the active SiO of prescription through accurately metering
2Modifier, fortifying fibre, sial is water-fast structure modifier add in the compound saltwater brine that 1. step prepare, and stir 20～30 minutes, form slurry, are equipped with cast usefulness;
3.. cast, curing molding
According to conventional concrete pouring program, the slurry that 2. step is prepared is poured into and manufactures and designs in the good special silicon-magnesium-polymer cement acoustic panel of road sound barrier mould curing molding in advance;
4.. demoulding, natural curing;
5.. intermediate course is loaded inorganic sound absorption material;
6.. check, qualified back packing warehouse-in.
Road noise barrier special silicon-magnesium-polymer cement sound absorption sound insulating panel of the present invention and preparation method thereof has following good effect compared to existing technology:
1. a kind of halogenation, frost mist free are provided, intensity height, indeformable, water-tolerant, weather resistance, long service life, road noise barrier special silicon-magnesium-polymer cement sound absorption sound insulating panel of sound absorption sound insulation value excellence and preparation method thereof.
2. the intensity height is indeformable.
3. excellent in water resistance.
4. weather resistance performance is good, and application life is more than 25 years.
Description of drawings
Fig. 1 is the magnesia oxychloride cement needle-like 5.1.8 crystalline state SEM photo of non-modified
Fig. 2 is the silicon-magnesium-polymer cement 5.1.8 crystal habit as a form of gel SEM photo that acoustical board of the present invention adopts
Fig. 3 is the silicon-magnesium-polymer cement gelling deformed vanes shape 5.1.8 crystal habit SEM photo that acoustical board of the present invention adopts
Fig. 4 is the block 5.1.8 crystal habit of the silicon-magnesium-polymer cement SEM photo that acoustical board of the present invention adopts
Fig. 5 is the generalized section of special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention
Fig. 6 is the schematic perspective view of special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention
Fig. 7 is the surface layer front view schematic diagram of special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment:
Embodiment 1 prepares special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention according to following steps
1. the preparation of compound saltwater brine
Will be according to the setting accelerator MgCl of prescription through accurately measuring
26H
2O 41.70 weight portions, H
3PO
40.55 weight portion, Na
2PO
40.27 weight portion, diminishing dispersing agent NNO 0.24 weight portion, FeSO
4.7H
2O 0.94 weight portion, polyacrylate dispersion 20 weight portions and suitable quantity of water add in the compound saltwater brine preparation vessel, stir down it is dissolved fully after, filtration, standby;
2.. the preparation of slip
Will be according to MgO 36.76 weight portions of prescription through accurately measuring, active SiO
2Modifier flyash 12.38 weight portions, fortifying fibre wood fiber 9.97 weight portions, sial is water-fast structure modifier swell soil 0.5 weight portion, order adds in the compound saltwater brine that 1. step prepare, and stirs 20～30 minutes, forms slurry, is equipped with cast usefulness;
3.. cast, curing molding
According to conventional concrete pouring program, the slurry that 2. step is prepared is poured into and manufactures and designs in the good special silicon-magnesium-polymer cement acoustic panel of road sound barrier mould curing molding in advance;
4.. demoulding, natural curing;
5.. intermediate course is loaded rock wool or the inorganic sound absorption material of glass wool;
6.. check, qualified back packing warehouse-in.
The special silicon-magnesium-polymer cement acoustic panel of road sound barrier of preparation reaches following technical indicator
| Sequence number | The technical performance title | Technical indicator | Remarks |
| ??1 | Average sound absorption coefficient NRC | ??≥0.7 | The GBJ47 standard meets GB/T23451-2009 |
| ??2 | Sound insulation property dB | ??≥40 | Meet GB175 |
| ??3 | Surface density Kg/m 2 | ??≤50 | ??GB/T?7019 |
| ??4 | Compressive strength MPA | ??≥6 | Meet the GB15762 standard |
| ??5 | Anti-dynamic impact | ??≥30J | Meet the GB/T3122 requirement |
| ??6 | Impact resistance (inferior) | ??≥5 | Meet GB/T23451-2009 |
| Sequence number | The technical performance title | Technical indicator | Remarks |
| ??7 | Fireproof performance, fire endurance | Incombustible material fire endurance 1.5H | Meet the GB8624-2009 standard |
| ??8 | Freeze thawing resistance (inferior) | 84 times | Super GB/T2542 standard |
| ??9 | Weather resistance | Anti- | Meet the GB/T2524 requirement |
| ??10 | Return halogen, scum performance | Do not have | Handle the super GA160-2004 standard of 72H continuously |
| ??11 | Service life | Be not less than 25 years | The GB5101-2003 standard test |
| ??12 | Rupture strength | ??＞4MPA | Meet the GB15762 standard |
Embodiment 2～embodiment 6
According to the preparation method of embodiment 1, according to the formulation of table 1 special silicon-magnesium-polymer cement acoustic panel of road sound barrier of the present invention
Table 1
| Raw material | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| ??MgO | ?35 | ?40 | ?36 | ?38 | ?39 |
| ??MgCl 2.6H 2O | ?38 | ?44 | ?39 | ?40 | ?42 |
| ??H 3PO 4 | ?.05 | ?.06 | ?0.5 | ?0.6 | ?0.5 |
| ??Na 2PO 4 | ?0.2 | ?0.3 | ?0.2 | ?0.3 | ?0.3 |
| Diminishing dispersing agent NNO | ?0.2 | ?0.3 | ?0.2 | ?0.2 | ?0.3 |
| ??FeSO 4.7H 2O | ?0.8 | ?1.0 | ?0.9 | ?0.8 | ?1.0 |
| Raw material | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Epoxy resin latex solid content 40% | ?10 | ||||
| Polyacrylate dispersion solid content 40% | ?30 | ?20 | |||
| Polyvinyl acetate emulsion solid content 40% | ?15 | ||||
| Epoxy-polyurethane emulsion solid content 40% | ?25 | ||||
| Flyash | ?11 | ?12 | ?11.5 | ||
| The silicon ash | ?13 | ?12.5 | |||
| Alkali containing glass fibre | ?9 | ?11 | |||
| The short PP fiber that disperses enhancing | ?10 | ||||
| Wood fiber | ??11 | ||||
| Crop branch fiber | ??10 | ||||
| Montmorillonite | ??0.4 | ??0.6 | |||
| Swell soil | ??0.5 | ??0.4 | ??0.6 | ||
| Water | In right amount | In right amount | In right amount | In right amount | In right amount |
The special silicon-magnesium-polymer cement acoustic panel of road sound barrier of embodiment 2～embodiment 6 preparations all reaches following technical indicator
| Sequence number | The technical performance title | Technical indicator | Remarks |
| ??1 | Average sound absorption coefficient NRC | ??≥0.7 | The GBJ47 standard meets GB/T23451-2009 |
| ??2 | Sound insulation property dB | ??≥40 | Meet GB175 |
| ??3 | Surface density Kg/m 2 | ??≤50 | ??GB/T?7019 |
| ??4 | Compressive strength MPA | ??≥6 | Meet the GB15762 standard |
| ??5 | Anti-dynamic impact | ??≥30J | Meet the GB/T3122 requirement |
| ??6 | Impact resistance (inferior) | ??≥5 | Meet GB/T23451-2009 |
| ??7 | Fireproof performance, fire endurance | Incombustible material fire endurance 1.5H | Meet the GB8624-2009 standard |
| ??8 | Freeze thawing resistance (inferior) | 84 times | Super GB/T2542 standard |
| ??9 | Weather resistance | Anti- | Meet the GB/T2524 requirement |
| ??10 | Return halogen, scum performance | Do not have | Handle the super GA160-2004 standard of 72H continuously |
| ??11 | Service life | Be not less than 25 years | The GB5101-2003 standard test |
| ??12 | Rupture strength | ??＞4MPA | Meet the GB15762 standard |
Claims (7)
1. special silicon-magnesium-polymer cement acoustic panel of road sound barrier is characterized in that:
1.. the acoustical board architectural feature: profile is the tabular cuboid, acoustical board framework one-time cast-forming, wherein, bottom sealing, surface layer porous, intermediate course two-chamber are also loaded inorganic sound absorption material;
2.. material characteristics: feature 1. described among between the inorganic sound absorption material loaded of interlayer be rock wool or glass wool; The acoustical board framework comprises following with component materials in parts by weight:
MgO????????????????????????????35～40
MgCl
2.6H
2O?????????????????????38～44
H
3PO
4??????????????????????????0.5～0.6
Na
2PO
4?????????????????????????0.2～0.3
Diminishing dispersing agent NNO 0.2～0.3
FeSO
4.7H
2O?????????????????????0.8～1.0
Organic polymer emulsion solid content 40% 10～30
Active SiO
2Modifier 11～13
Fortifying fibre 9～11
Structure modifier 0.4～0.6 that sial is water-fast.
Water is an amount of.
2. according to claim 1 special silicon-magnesium-polymer cement acoustic panel of road sound barrier, it is characterized in that; 1. in the .. acoustical board architectural feature, described acoustical board adopts two-chamber, and surface layer has strip hole, the hole is interrupted and is not communicated with, and intermediate course is the orifice plate that has concave-convex type bar shaped interval in Kai Yuan hole.
2.. material characteristics: the acoustical board framework comprises following with component materials in parts by weight:
MgO????????????????????????36.76
MgCl
2.6H
2O?????????????????41.70
H
3PO
4??????????????????????0.55
Na
2PO
4?????????????????????0.27
Diminishing dispersing agent NNO 0.24
FeSO
4.7H
2O????0.94
Organic polymer emulsion solid content 40% 20
Flyash 12.38
Fortifying fibre 9.97
Swell soil or montmorillonite 0.5
Water is an amount of.
3. according to the special silicon-magnesium-polymer cement acoustic panel of road sound barrier of claim 1, it is characterized in that polymer emulsion in the raw material components is a kind of in polyacrylate dispersion, epoxy resin latex, polyaminoester emulsion, the polyvinyl acetate emulsion.
4. according to the special silicon-magnesium-polymer cement acoustic panel of road sound barrier of claim 1, it is characterized in that the active SiO in the raw material components
2Modifier is flyash or silicon ash.
5. according to the special silicon-magnesium-polymer cement acoustic panel of road sound barrier of claim 1, any or its any two or more combinations in the short PP fiber that it is characterized in that the fortifying fibre in the raw material components is an alkali containing glass fibre, disperses to strengthen, wood fiber, the crop branch fiber.
6. according to the special silicon-magnesium-polymer cement acoustic panel of road sound barrier of claim 1, it is characterized in that silicon-aluminum structure modifier in the raw material components is a kind of or the two combination in swell soil, the montmorillonite.
7. the preparation method of the special silicon-magnesium-polymer cement acoustic panel of road sound barrier of a claim 1 is characterized in that comprising the steps:
1. the preparation of compound saltwater brine
Will be according to the MgCl of prescription through accurately measuring
26H
2O, H
3PO
4, Na
2PO
4, diminishing dispersing agent NNO, FeSO
4.7H
2O, organic polymer emulsion and suitable quantity of water add in the compound saltwater brine preparation vessel, stir down it is dissolved fully after, filtration, standby;
2.. the preparation of slip
Will be according to MgO, the active SiO of prescription through accurately metering
2Modifier, fortifying fibre, sial is water-fast structure modifier add in the compound saltwater brine that 1. step prepare, and stir 20～30 minutes, form slurry, are equipped with cast usefulness;
3.. cast, curing molding
According to conventional concrete pouring program, the slurry that 2. step is prepared is poured into and manufactures and designs in the good special silicon-magnesium-polymer cement acoustic panel of road sound barrier mould curing molding in advance;
4.. demoulding, natural curing;
5.. intermediate course is loaded inorganic sound absorption material;
6.. check, qualified back packing warehouse-in.
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| CN2010101795417A CN101818484B (en) | 2010-05-21 | 2010-05-21 | Special silicon-magnesium-polymer cement acoustic panel of road sound barrier and preparation method thereof |
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| CN101818484A true CN101818484A (en) | 2010-09-01 |
| CN101818484B CN101818484B (en) | 2011-07-20 |
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| CN105421257A (en) * | 2015-12-24 | 2016-03-23 | 江苏国强镀锌实业有限公司 | Cement-based non-metal sound barrier unit plate |
| CN107447688A (en) * | 2017-06-23 | 2017-12-08 | 江苏新光环保工程有限公司 | A kind of roadbed non-metal sound barrier and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101818484B (en) | 2011-07-20 |
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