CN102849994A - Cement-based perlite composite sound barrier, and its preparation method - Google Patents
Cement-based perlite composite sound barrier, and its preparation method Download PDFInfo
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- CN102849994A CN102849994A CN2011101803850A CN201110180385A CN102849994A CN 102849994 A CN102849994 A CN 102849994A CN 2011101803850 A CN2011101803850 A CN 2011101803850A CN 201110180385 A CN201110180385 A CN 201110180385A CN 102849994 A CN102849994 A CN 102849994A
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Abstract
The invention discloses a cement-based perlite composite sound barrier, and its preparation method, applied to noise prevention and control engineering for railway and urban rail transit projects. The preparation method includes mixing perlite, glue, cement, water and sand to obtain perlite mixture; mixing ceramisite, cement, water and sand to obtain ceramisite concrete mixture; injecting and leveling half of the perlite mixture in a mold, spreading a reinforcement mesh, and injecting and leveling the rest of the perlite mixture; injecting the ceramisite concrete mixture; holding pressure at 450-500 T for 18-30 h; and demolding. The invention utilizes cementing force of cement itself to bond the perlite layer and ceramisite concrete layer, and utilizes self porosity of perlite to realize noise reduction effect. The sound barrier has the advantages of good sound absorbability, high bending and impact strength, good freeze-thaw resistance, and stable material chemical stability.
Description
Technical field
The present invention relates to be mainly used in railway, the urban light rail engineering a kind of cement based acoustic board in the Noise Prevention and Treatment engineering, relate in particular to a kind of cement based acoustic board manufacture method.
Background technology
Quick propelling along with the fast development of China's economy and industrialization, urbanization process.In recent years, railway, highway, subway and urban light rail are increasing, when being convenient for people to go on a journey, but become continue topsoil, water pollute and noxious waste pollution after the fourth-largest pollution, imprison and the governing problem of sound pollution has become witch's social concern to be solved.At present in the several different methods for the control of the noise that produces in the traffic facilities, it is a kind of relatively effective means that sound absorbing-insulating barrier is set.But the sound absorption efficient of existing sound absorbing-insulating barrier is not high, sound absorbing capabilities is unstable, intensity low and weathering resistance is relatively poor, the making unit price is higher and be not easy to make installation.
Thereby develop a kind of novel sound absorption efficiency height, stable performance that is used for sound absorbing-insulating barrier, have higher-strength, round-the-clock, be made into wooden low, fabrication and installation easily acoustic board be very significant.
In the past, the material that is used as the acoustic board in traditional gobo of sound absorbing-insulating barrier mostly is organic or inorganic filamentary materials such as containing fiber crops, cotton, wood, glass wool, mineral wool.Though this class acoustic board has good sound absorption characteristics, fiber itself is relatively more loose, property is crisp, intensity is low, and frangibility is scattered in construction and use procedure, forms dust, contaminate environment; And the material waterproofing poor performance, the rear sound absorbing capabilities that drenched with rain sharply reduces, and environmental adaptation differs, weather resistance is low.
Present sound absorbing-insulating barrier mainly contains metal pivot-hung window type sound screen, synthetic glass sound barrier, combined type sound barrier, cement based sound barrier etc.
Wherein the sound absorption efficient of metal pivot-hung window type and synthetic glass sound barrier is not high, and cost of manufacture is higher.
The combined type sound barrier, be 96222445.6 such as the patent No., the disclosed top of Chinese patent adopts metal, aluminium to do skeleton, inner filling sucting sound material is as gobo, the bottom adopts transparent synthetic glass as noise reduction barrier, it is lightweight, the sound absorption effect is better, but Cheng Mugao, weathering resistance are relatively poor, are not suitable at present promoting the use of in China.
The cement based sound barrier all adopts wood chips and cement mixing and stirring, solidifies, the method for the demoulding.For example, application number is that 98100460 Chinese patent discloses a kind of method of making the timber cement plate, and it is that the sheet timber after infiltrating is placed container, under agitation adds cement and stiffening agent, then enters mold forming.The timber cement plate surface irregularity of making in this way, sheet material is apparent relatively poor, and sound absorption coefficient only is about 0.5, can improve surface appearance by increasing cement consumption, but this increases timber cement plate proportion, and sound absorbing capabilities descends.In addition, application number is the manufacture method that 00120631.1 Chinese patent discloses a kind of sound-absorbing wood-foam cement plate, with behind cement blowing agent and the cement mixing, put into mould pressurization, foaming, solidify, at room temperature solidify the demoulding after 12-48 hour, then at room temperature continue to solidify one to two all sound-absorbing wood-foam cement plates that gets.The sound-absorbing wood-foam cement plate sound absorption coefficient of making in this way because wood chip needs pre-soaking, causes complex manufacturing about 0.62-0.72, the cycle is longer.When above-mentioned two kinds of sound-absorbing materials use as absorbent lined barrier, because its folding strength is low, be easy to fracture, must with high-strength backboard compound use, cost is higher, its job schedule is slow, it is consuming time to take a lot of work.
Above shortcomings has restricted application and the popularization of cement based acoustic board in the sound absorbing-insulating barrier engineering greatly.
Summary of the invention
In order to solve the defective that exists in the above-mentioned technology, the purpose of this invention is to provide a kind of simplify production technique, easy to operate, noise reduction coefficient is high and the cement base pearlite composite sound barrier manufacture method of surfacing.
Technical scheme of the present invention is achieved in that
A kind of cement base pearlite composite sound barrier manufacture method, it is characterized in that: at first mixed by a certain percentage by perlite, glue, cement, water and yellow ground and consist of the perlite compound, mixed by a certain percentage forming the haydite concrete compound by haydite, cement, water and yellow ground; The perlite compound injection mould of half is paved, put into reinforcing mat, again remaining perlite compound is injected mould and pave; Then inject the haydite concrete compound, under the pressure of 450-500T pressurize 18-30 hour, finally demould formed cement base pearlite composite sound barrier.
The present invention compared with prior art has following advantage:
1. adopt the cement base pearlite composite sound barrier of this manufacture method production in conjunction with perlitic own characteristic, utilize the cohesive force of cement clay, pearl rock stratum and concrete layer are bonded together, utilize simultaneously the hole of perlite self, the energy of absorption sound carries out autophage, thereby reach the purpose of noise reduction, its noise reduction coefficient reaches more than 0.65, and oise insulation factor reaches more than the 27dB.It is good to have sound absorbing capabilities, anti-folding, excellent in cushion effect, freezing and thawing performance is good, the materials chemistry performance is stable, humidity, corrosion-resistant, anti-ly go mouldy, do not burn, pollution-free, easily transportation, the characteristics such as convenient for installation and maintenance.
2. by the stone in the haydite replacement concrete, because the weight ratio stone of haydite is light, but like this with regard to the concrete weight of decrease, can descend 25% at most.
3. owing in the pearl rock stratum, be provided with the reinforcing mat of booster action, whole anti-folding, the ultimate compression strength of sound barrier are further improved, surperficial ultimate compression strength 〉=5MPa, counter-bending fracture lotus cuts 〉=3.5KPa, unit member maximum defluxion≤L/180 prolongs its work-ing life.
Embodiment
Embodiment one: a kind of cement base pearlite composite sound barrier manufacture method, it is characterized in that: at first mixed by a certain percentage by perlite, glue, cement, water and yellow ground and consist of the perlite compound, mixed by a certain percentage forming the haydite concrete compound by haydite, cement, water and yellow ground; The perlite compound injection mould of half is paved, put into reinforcing mat, again remaining perlite compound is injected mould and pave; Then inject the haydite concrete compound, pressurize is 18 hours under the pressure of 450T, and finally demould forms cement base pearlite composite sound barrier.
Embodiment two: a kind of cement base pearlite composite sound barrier manufacture method, it is characterized in that: at first mixed by a certain percentage by perlite, glue, cement, water and yellow ground and consist of the perlite compound, mixed by a certain percentage forming the haydite concrete compound by haydite, cement, water and yellow ground; The perlite compound injection mould of half is paved, put into reinforcing mat, again remaining perlite compound is injected mould and pave; Then inject the haydite concrete compound, pressurize is 30 hours under the pressure of 500T, and finally demould forms cement base pearlite composite sound barrier.
Embodiment three: a kind of cement base pearlite composite sound barrier manufacture method, it is characterized in that: at first mixed by a certain percentage by perlite, glue, cement, water and yellow ground and consist of the perlite compound, mixed by a certain percentage forming the haydite concrete compound by haydite, cement, water and yellow ground; The perlite compound injection mould of half is paved, put into reinforcing mat, again remaining perlite compound is injected mould and pave; Then inject the haydite concrete compound, pressurize is 24 hours under the pressure of 480T, and finally demould forms cement base pearlite composite sound barrier.
The technical indicator of the cement base pearlite composite sound barrier that employing the method is made is as follows:
Noise reduction coefficient: 〉=0.65
Oise insulation factor: Rw 〉=27dB
Area density: 160kg/m
2≤ D 〉=284kg/m
2
Surface ultimate compression strength: 〉=5MPa
Counter-bending fracture lotus cuts: 〉=3.5KPa
Anti-deformation: unit member maximum defluxion≤L/180
Fire resistance: A level
Weather resisteant energy: meet the TB/T3122-2005 standard.
Claims (1)
1. cement based wood chip compound sound barrier manufacture method, it is characterized in that: at first mixed by a certain percentage by perlite, glue, cement, water and yellow ground and consist of the perlite compound, mixed by a certain percentage forming the haydite concrete compound by haydite, cement, water and yellow ground; The perlite compound injection mould of half is paved, put into reinforcing mat, again remaining perlite compound is injected mould and pave; Then inject the haydite concrete compound, under the pressure of 450-500T pressurize 18-30 hour, finally demould formed cement base pearlite composite sound barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101803850A CN102849994A (en) | 2011-06-30 | 2011-06-30 | Cement-based perlite composite sound barrier, and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101803850A CN102849994A (en) | 2011-06-30 | 2011-06-30 | Cement-based perlite composite sound barrier, and its preparation method |
Publications (1)
| Publication Number | Publication Date |
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| CN102849994A true CN102849994A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101803850A Pending CN102849994A (en) | 2011-06-30 | 2011-06-30 | Cement-based perlite composite sound barrier, and its preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510477A (en) * | 2013-09-03 | 2014-01-15 | 江苏远兴环保集团有限公司 | Hanging type acoustic board used for tunnel |
| CN106638344A (en) * | 2017-01-13 | 2017-05-10 | 北京天润康隆科技股份有限公司 | Cotton-free non-metallic compound sound barrier and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318458A (en) * | 2001-02-23 | 2001-10-24 | 四川省和光高技术开发有限责任公司 | Production process of outdoor sound absorbing board |
| CN101100887A (en) * | 2007-06-01 | 2008-01-09 | 广州市天座企业发展有限公司 | Method for manufacturing light concrete composite wall plate, building plate and road sound barrier plate |
| CN101956375A (en) * | 2010-08-18 | 2011-01-26 | 南京新光环保科技工程有限公司 | Pearlite ceramsite composite acoustic board |
-
2011
- 2011-06-30 CN CN2011101803850A patent/CN102849994A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318458A (en) * | 2001-02-23 | 2001-10-24 | 四川省和光高技术开发有限责任公司 | Production process of outdoor sound absorbing board |
| CN101100887A (en) * | 2007-06-01 | 2008-01-09 | 广州市天座企业发展有限公司 | Method for manufacturing light concrete composite wall plate, building plate and road sound barrier plate |
| CN101956375A (en) * | 2010-08-18 | 2011-01-26 | 南京新光环保科技工程有限公司 | Pearlite ceramsite composite acoustic board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510477A (en) * | 2013-09-03 | 2014-01-15 | 江苏远兴环保集团有限公司 | Hanging type acoustic board used for tunnel |
| CN103510477B (en) * | 2013-09-03 | 2017-02-08 | 江苏远兴环保集团有限公司 | Hanging type acoustic board used for tunnel |
| CN106638344A (en) * | 2017-01-13 | 2017-05-10 | 北京天润康隆科技股份有限公司 | Cotton-free non-metallic compound sound barrier and preparation method thereof |
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Application publication date: 20130102 |