CN108249848A - sound-absorbing wall - Google Patents
sound-absorbing wall Download PDFInfo
- Publication number
- CN108249848A CN108249848A CN201711492773.6A CN201711492773A CN108249848A CN 108249848 A CN108249848 A CN 108249848A CN 201711492773 A CN201711492773 A CN 201711492773A CN 108249848 A CN108249848 A CN 108249848A
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- Prior art keywords
- haydite
- sound
- absorbing
- water
- cement
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Classifications
-
- 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
- C04B28/04—Portland 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
- 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
-
- 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
- C04B2111/40—Porous or lightweight 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
- C04B2111/52—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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of sound-absorbing wall, and the sound-absorbing wall is assembled by wall brick, and the wall brick is equipped at least one cavity through the wall brick on along wall brick vertical direction, and is connected between adjacent two cavity by rib；The wall brick is made of the material of following components, and the percentage of each component material is haydite 60 65%, cement 35 40%, the ratio of mud 0.19, water-reducing agent 1.2%, polypropylene fibre 0.3%, and the density of above-mentioned material is 1220 1430kg/ cubic metres, 7d compression strength is 7.4 11.3MPa.The bulk density of the sound-absorbing wall of the present invention is controlled in the range of 1200 1400kg/ cubic metres, and material meets light-weight requirements.The present invention between wall brick by will set the form of cavity to improve the effect of sound insulation.
Description
Technical field
The present invention relates to highway, public places to safeguard net field, in particular to a kind of highway sound-absorbing wall.
Background technology
City noise drastically influences normal life and the health of human body of city dweller, and city noise is primarily referred to as traffic and makes an uproar
Sound, factory noise, construction noise pollution and noise of social activities, the coverage of noise and influence degree getting worse are right
Civic living environment influences greatly, to become one of noticeable city environmental pollution problem.
Sound-absorbing wall refers to the wall being arranged on by railway and roadside to mitigate influence of the driving noise to neighbouring resident
Formula structure.Soundproof wall is also referred to as sound barrier.A facility is inserted between sound source and recipient, making Acoustic Wave Propagation, there are one aobvious
The additional attenuation of work, so as to weaken the influence of noise in the certain area where recipient, such facility is known as sound barrier.
It is to use to be divided on traffic noise barrier, equipment noise attenuation noise barrier, industrial factory circle noise barrier, highway and highway
The most place of all types of sound barriers.
At present highway, public place maintenance Netcom frequently with wire netting or aluminum protective plate.Wherein, wire netting is as dimension
Its soundproof effect is poor during protecting wire net；Installation need to weld antirust etc., increase installation maintenance cost.And aluminum protective plate windage is larger；
Cost is higher.
Invention content
Present invention aims at a kind of sound-absorbing wall is provided, the sound-absorbing wall is assembled by wall brick, and the wall brick is upper edge
Wall brick vertical direction equipped at least one cavity through the wall brick, and is connected between adjacent two cavity by rib；
The wall brick is made of the material of following components, and the percentage of each component material is haydite 60-65%, cement
35-40%, the ratio of mud 0.19, water-reducing agent 1.2%, polypropylene fibre 0.3%, and the density of above-mentioned material is 1220-1430kg/
Cubic meter, 7d compression strength are 7.4-11.3MPa.
Further, aforementioned haydite is mixing haydite, wherein the particle size range of thin haydite is 1-4mm, the grain size of crude pottery grain
Ranging from 3-5mm or 6-8mm.
Further, the mass percent of aforementioned crude haydite and thin haydite is respectively thin haydite 40-70%, crude pottery grain 30-
60%.
Further, wherein the bulk density of thin haydite is 550kg/ cubic metres, the water absorption rate of one hour is 14.5%, cylinder
Compressive Strength is 2.4MPa.
Further, the bulk density of preceding wherein crude pottery grain is 1210kg/ cubic metres, and the water absorption rate of one hour is
12.9%, cylindrical compress strength 12.3MPa.
Further, the processing method of aforementioned cement base haydite sound-absorbing material is as follows：
Haydite is put into container, carries out pre-wetted treatment；
Haydite after pre-wetted treatment and cement are put into blender and carry out premixing 1min；
Water-reducing agent, polypropylene fibre object and water, which are added in, according to mass ratio is again stirring for 3min；
The material for stirring completion is put into compression moulding in mold；
Product is covered in plastic film in 24 hours after material compression moulding, and compression moulding was given at interval of 2 hours
Product watering, have condensation droplet in film, film thrown off after 7 days, complete the making of cement base haydite sound-absorbing material.
Further, the water total water consumption in aforementioned addition blender is
mwt=mwn+mwa；
mwa=ma*wa；
Wherein, mwtTotal water consumption for every cubic metre of cement base haydite sound-absorbing material；
mwnThe mixing water without haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
mwaThe water used of haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
maHaydite dosage for every cubic metre of cement base haydite sound-absorbing material；
waFor the haydite water absorption rate of 1 hour.
Further, aforementioned cylindrical compress strength refers to haydite being put into standard pressure cylinder, under forcing press effect, press-in
Corresponding intensity value, f during 20mma=P/F, wherein faFor the cylindrical compress strength of haydite, P is compression distance when being 20mm pressure value；
F is bearing area.
Further, the water-reducing rate of aforementioned water-reducing agent is 20%.
Further, the shape of the cross section of aforementioned cavity is rectangle, round rectangle, triangle, circle or ellipse.
By more than technology contents it is found that haydite is for raw material with industrial residue or discarded mineral waste, shale inferior etc.,
A small amount of binding agent, additive etc. are mixed, a kind of artificial lightweight aggregate being made by techniques such as mixing, balling-up, high temperature sinterings,
Belong to environmental type construction material, simultaneously because haydite has bulk density low, cylindrical compress strength is high, thermal conductivity factor is low, resistance to height
The characteristic of temperature, and the mixture of crude pottery grain and thin haydite has been selected, into one by multiple comparison and optimization during experiment
The intensity for improving product of step.
Cement as hydraulicity inorganic coagulation material, the strength development after hardening the mechanical property of sound-absorbing material is played to
Close important role.
Polypropylene fibre Nature comparison stablize, with cement and additive will not occur it is any conflict, have in concrete
Good cracking resistance.Suitable fiber is added in sound-absorbing material can significantly improve the comprehensive performance of material.Mechanical property side
Face, fiber add in the netted supporting role that three-dimensional random distribution can be played in concrete, and inside concrete is hindered to form micro-crack,
So as to improve the cracking resistance of material.These unrest simultaneously can play the role of connection, reinforcement to the fiber of dispersion, improve material
Flexural strength, while improve the toughness of sound-absorbing material, durability.
Water-reducing agent in the case where ensureing workability, reduces the water consumption of mixture, so as to improve the early stage of sound-absorbing material
Intensity and final strength.
The bulk density of the sound-absorbing wall of the present invention is controlled in the range of 1200-1400kg/ cubic metres, and material meets lightweight will
It asks.
The present invention between wall brick by will set the form of cavity to improve the effect of sound insulation.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived that describe in greater detail below are at this
Sample design it is not conflicting in the case of can be viewed as the disclosure subject matter a part.In addition, required guarantor
All combinations of the theme of shield are considered as a part for the subject matter of the disclosure.
Can be more fully appreciated from the following description with reference to attached drawing present invention teach that foregoing and other aspect, reality
Apply example and feature.The feature and/or advantageous effect of other additional aspects such as illustrative embodiments of the present invention will be below
Description in it is obvious or by according to present invention teach that specific embodiment practice in learn.
Description of the drawings
Attached drawing is not intended to drawn to scale.In the accompanying drawings, each identical or approximately uniform group shown in each figure
It can be indicated by the same numeral into part.For clarity, in each figure, not each component part is labeled.
Now, by example and the embodiments of various aspects of the invention will be described in reference to the drawings, wherein：
Fig. 1 is the structure diagram of the wall brick of the present invention.
Fig. 2 is the processing technology of the cement base haydite sound-absorbing material of the present invention.
In figure, 1, wall brick, 2, cavity, 3, rib.
Specific embodiment
In order to know more about the technology contents of the present invention, spy lifts specific embodiment and institute's accompanying drawings is coordinated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs presented hereinbefore and reality
Apply example and those designs described in more detail below and embodiment can in many ways in any one come it is real
It applies, this is because design disclosed in this invention and embodiment are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone or otherwise any appropriately combined be used with disclosed by the invention.
As shown in Figure 1, a kind of sound-absorbing wall, the sound-absorbing wall is assembled by wall brick 1, and the wall brick 1 is on along wall brick 1
Vertical direction is equipped at least one cavity 2 through the wall brick 1, and is connected between adjacent two cavity 2 by rib 3.
The wall brick 1 is made of the material of following components, and the percentage of each component material is haydite 60-65%, water
Mud 35-40%, the ratio of mud 0.19, water-reducing agent 1.2%, polypropylene fibre 0.3%, and the density of above-mentioned material is 1220-
1430kg/ cubic metres, 7d compression strength is 7.4-11.3MPa.
The shape of the cross section of cavity 2 is rectangle, round rectangle, triangle, circle or ellipse.
Such as an evacuation chamber 2 or multiple rows of cavity 2 can be set inside wall brick 1 according to the volume of wall brick 1 in wall brick 1,
And the position of each cavity 2 can be mutually parallel or shift to install.
Meanwhile wall brick 1 of the invention can be also used for subway noise reduction, when for subway anechoic chamber, being set in cavity 2
Fire-fighting system, water power shouting pain, cold gas system, network system etc. are put, improves the utilization rate in space.
At the same time, wall brick 1 of the invention can also be docked by two blocks of identical wall bricks 1, such as the wall brick 1
Shape is to build plus form along the two block-shaped identical bricks that the middle part of wall brick 1 as shown in Figure 1 is blocked, and is built in two pieces of bricks
During adding, the sticking part that can add at base increases defeated spool road, saves wiring space.
One, the selection of haydite
1) apparent size of haydite
The apparent size of haydite refers mainly to haydite grain size, if the physical indexs such as uniform；It is strong to the mechanics of sound-absorbing material
Degree, sound absorbing performance have important influence.The haydite of four kinds of grain sizes is selected herein, selects single particle size first during the experiment
Or the haydite of mixing grain size, make sample；
2) water absorption rate
Haydite water absorption rate refers in the dry state, the haydite water absorption rate of 1 hour, wa=(m1-m0)/m0*100；
W in formulaaFor 1 hour water absorption rate (%) of haydite；m1For the quality (g) after water suction；m0Quality for drying regime
(g)。
3) cylindrical compress strength of haydite
The cylindrical compress strength of haydite is mainly measured by pressure-bearing cylinder method, is provided according to specification, cylindrical compress strength refers to that material is put into
In standard pressure cylinder, under forcing press effect, corresponding intensity value, that is, f when being pressed into 20mma=P/F, wherein faCylinder pressure for haydite
Intensity, the pressure value that P is compression distance when being 20mm；F is bearing area.
4) selection of haydite
The quality of haydite quality is directly related to the performance indicator of finished material, thus must to haydite above-mentioned technical indicator
It is tested.This chapter chooses altogether four kinds of clay haydites, carries out the experiment of basic performance to each haydite according to specification, obtains
Basic parameter is as shown in the table：
Since the quality of each haydite is all different, as shown above, the smaller haydite of density, cylindrical compress strength is then relatively
It is low.1., 2. density is all relatively low for haydite, because internal void is more, and there is parts against wear on haydite surface, by smaller pressure
When will recurring structure destroy, so the cylindrical compress strength haydite intact well below surface is 2.；Haydite 3. with haydite 4. grain size compared with
Greatly, density is big, and when being under pressure effect, deformation is smaller, and cylindrical compress strength is high.Due to haydite, 1. cylindrical compress strength is too low, discomfort cooperation
For the material of sound-absorbing wall, select haydite 2. as thin haydite, 3. 4. haydite is used as crude pottery grain with haydite.
Three groups of standard specimens are made with the haydite of three kinds of grain sizes, and size is 100mm × 100mm × 100mm, every group five.
According to standard curing condition, reach and measure the density of every block of material and 7d compression strength after age, then with three test blocks
Typical value of the average value as material property, it is as shown in the table to obtain relevant parameter：
As shown above, 2. intensity of test block index is unsatisfactory for requiring haydite；The density of haydite 3. test block is larger, is unsatisfactory for making
With requiring；4. intensity and density are close to target call for haydite, and the density of test block is higher, and more closely knit, 7d compression strength is filled in inside
Higher, the cylindrical compress strength of haydite also has certain influence to the compression strength of test block, and general cylindrical compress strength is higher, and the test block made is strong
Degree is bigger.
The requirement of haydite sound-absorbing material is light, and density should be in 1200~1400kg/m3In the range of.Because the examination that single haydite is done
Block is difficult the requirement for meeting density and intensity simultaneously.So added using the haydite mixing of two kinds of variety classes, different-grain diameter
Mode reduces the density of test block while to realize intensity index, and uses the haydite mixing addition of different-grain diameter that can be formed
Preferable grain composition improves the sound absorbing performance of material.After screening, mixing haydite is chosen, wherein the grain size model of thin haydite
It encloses for 1-4mm, the particle size range of crude pottery grain is 3-5mm or 6-8mm.And the mass percent of crude pottery grain and thin haydite is respectively thin
Haydite 40-70%, crude pottery grain 30-60%.
The bulk density of wherein thin haydite is 550kg/ cubic metres, and the water absorption rate of one hour is 14.5%, and cylindrical compress strength is
2.4MPa。
Wherein the bulk density of crude pottery grain is 1210kg/ cubic metres, and the water absorption rate of one hour is 12.9%, and cylindrical compress strength is
12.3MPa。
The intensity of sound-absorbing material is mainly codetermined by the cohesive force between haydite intensity, strength of cement, haydite and cement,
As hydraulicity inorganic coagulation material, the strength development after hardening plays the mechanical property of sound-absorbing material vital cement
Effect.
The Portland cement of the invention for mainly using P.O42.5 and P.O52.5, the apparent density of this product reach
3100kg/m3, setting time, the compression strength after 28 days was more than or equal to 42.5MPa, and the anti-folding of 28 days is strong less than or equal to 600min
Degree is more than or equal to 6.5MPa.
In whipping process, cement can be wrapped in haydite surface for haydite and cement, then be bonded in one with other haydites
It rises, forms some holes, these holes are the key that ensure material sound absorbing performance.And when the amount increase of cement, extra water
Mud can block the hole inside sound-absorbing material, seriously affect the sound absorbing performance of material.If cement consumption is very few, whipping process
The not fully wrapped around haydite of middle cement, then cohesive force is not strong between haydite and haydite, causes to be difficult to form stable structural form, and
Final products intensity is insufficient, influences the construction and installation of product.
Polypropylene fibre is a kind of by polypropylene and a variety of inorganic material, the material being made through special complex technique,
There is good resistivity to bronsted lowry acids and bases bronsted lowry, used in normal environment, aging or damage will not occur, ensure fiber in material
Effect is played in material for a long time.Meanwhile polypropylene fibre Nature comparison stablize, with cement and additive will not occur it is any conflict,
There is good cracking resistance in concrete.
Suitable polypropylene fibre is added in sound-absorbing material can significantly improve the comprehensive performance of material.Mechanical property side
Face, polypropylene fibre add in the netted supporting role that three-dimensional random distribution can be played in concrete, and inside concrete is hindered to be formed
Micro-crack, so as to improve the cracking resistance of material.Simultaneously these unrest to the polypropylene fibre of dispersion can play connection, reinforcement work
With improving the flexural strength of material, while improve the toughness of sound-absorbing material, durability.In addition, poly- third is added in sound-absorbing material
Alkene fiber, can reinforcing material sound absorbing performance.When sound wave, which enters material internal, to be propagated, polypropylene fibre can be driven to shake
Dynamic, the vibration elastic of these polypropylene fibres can consume larger acoustic energy, so as to achieve the purpose that the sound absorbing performance of reinforcing material.
The water-reducing rate for the water-reducing agent that the present invention selects is 20% or so.When the cellular structure of sound-absorbing material requires its making
Using the smaller ratio of mud, when water consumption is less, mix is stiff and loose, and workability is bad, not easily molded.Add
After entering water-reducing agent, in the case where ensureing workability, the water consumption of mixture is reduced, it is strong so as to improve the early stage of sound-absorbing material
Degree and final strength.
As shown in Fig. 2, the processing method of cement base haydite sound-absorbing material is as follows：
Haydite is put into container, carries out pre-wetted treatment；
Haydite after pre-wetted treatment and cement are put into blender and carry out premixing 1min；
Water-reducing agent, polypropylene fibre object and water, which are added in, according to mass ratio is again stirring for 3min；
The material for stirring completion is put into compression moulding in mold；
Product is covered in plastic film in 24 hours after material compression moulding, and compression moulding was given at interval of 2 hours
Product watering, have condensation droplet in film, film thrown off after 7 days, complete the making of cement base haydite sound-absorbing material.
The water total water consumption added in blender is mwt=mwn+mwa；
mwa=ma*wa；
Wherein, mwtTotal water consumption for every cubic metre of cement base haydite sound-absorbing material；
mwnThe mixing water without haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
mwaThe water used of haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
maHaydite dosage for every cubic metre of cement base haydite sound-absorbing material；
waFor the haydite water absorption rate of 1 hour.
Sound-absorbing material is made using single specification haydite, lightweight index and intensity index are difficult to realize simultaneously, only not
The haydite mixing addition of same grain size, different stacking densities, adjusts the grading of haydite, can be only achieved material to density and intensity
It is required that.It is 65%~60% that haydite dosage is taken in the match ratio of sound-absorbing material, cement consumption 35%~40%, and the ratio of mud is
0.19, water-reducing agent volume is 1.2%, and fibers content 0.3% can make density in 1220~1430kg/m3In the range of, 7d
Sound-absorbing material of the compression strength in the range of 7.4~11.3MPa substantially meets the technical requirement of density and intensity.
And during implementation, the cement base haydite sound-absorbing material can according to the difference of mold and use environment and
The size of mold is adjusted so as to achieve the purpose that quickly to pile up, and since cement base haydite sound-absorbing material is concrete structure,
In Expressway Construction, it is possible to the making of synchronous progress sound-absorbing wall, and this sound-absorbing wall is firm in structure, manufactures cost
Low, construction cost is relatively low.
Haydite is to mix a small amount of binding agent, addition for raw material with industrial residue or discarded mineral waste, shale inferior etc.
Agent etc., a kind of artificial lightweight aggregate being made by techniques such as mixing, balling-up, high temperature sinterings belong to environmental type building
Material, simultaneously because haydite has bulk density low, cylindrical compress strength is high, thermal conductivity factor is low, heat safe characteristic, and is testing
By multiple comparison and optimization in journey, the mixture of crude pottery grain and thin haydite is selected, has further improved the strong of product
Degree.
Cement as hydraulicity inorganic coagulation material, the strength development after hardening the mechanical property of sound-absorbing material is played to
Close important role.
Polypropylene fibre Nature comparison stablize, with cement and additive will not occur it is any conflict, have in concrete
Good cracking resistance.Suitable fiber is added in sound-absorbing material can significantly improve the comprehensive performance of material.Mechanical property side
Face, fiber add in the netted supporting role that three-dimensional random distribution can be played in concrete, and inside concrete is hindered to form micro-crack,
So as to improve the cracking resistance of material.These unrest simultaneously can play the role of connection, reinforcement to the fiber of dispersion, improve material
Flexural strength, while improve the toughness of sound-absorbing material, durability.
Water-reducing agent in the case where ensureing workability, reduces the water consumption of mixture, so as to improve the early stage of sound-absorbing material
Intensity and final strength.
The bulk density of the sound-absorbing wall of the present invention is controlled in the range of 1200-1400kg/ cubic metres, and material meets lightweight will
It asks.
Although the present invention is disclosed above with preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of sound-absorbing wall, which is characterized in that the sound-absorbing wall is assembled by wall brick, and the wall brick is vertical along wall brick on
Direction is equipped at least one cavity through the wall brick, and is connected between adjacent two cavity by rib；
The wall brick is made of the material of following components, and the percentage of each component material is haydite 60-65%, cement 35-
40%th, the ratio of mud 0.19, water-reducing agent 1.2%, polypropylene fibre 0.3%, and the density of above-mentioned material is stood for 1220-1430kg/
Square rice, 7d compression strength are 7.4-11.3MPa.
2. sound-absorbing wall according to claim 1, which is characterized in that the haydite is mixing haydite, wherein the grain of thin haydite
Diameter ranging from 1-4mm, the particle size range of crude pottery grain is 3-5mm or 6-8mm.
3. sound-absorbing wall according to claim 2, which is characterized in that the mass percent of the crude pottery grain and thin haydite is distinguished
For thin haydite 40-70%, crude pottery grain 30-60%.
4. sound-absorbing wall according to claim 3, which is characterized in that the bulk density of wherein thin haydite is 550kg/ cubes
Rice, the water absorption rate of one hour is 14.5%, cylindrical compress strength 2.4MPa.
5. sound-absorbing wall according to claim 3, which is characterized in that wherein the bulk density of crude pottery grain is 1210kg/ cubes
Rice, the water absorption rate of one hour is 12.9%, cylindrical compress strength 12.3MPa.
6. sound-absorbing wall according to claim 1, which is characterized in that the processing method of the cement base haydite sound-absorbing material is such as
Under：
Haydite is put into container, carries out pre-wetted treatment；
Haydite after pre-wetted treatment and cement are put into blender and carry out premixing 1min；
Water-reducing agent, polypropylene fibre object and water, which are added in, according to mass ratio is again stirring for 3min；
The material for stirring completion is put into compression moulding in mold；
Product is covered in plastic film in 24 hours after material compression moulding, and at interval of the production that 2 hours give compression moulding
Product are sprinkled water, and have condensation droplet in film, and film is thrown off after 7 days, complete the making of cement base haydite sound-absorbing material.
7. sound-absorbing wall according to claim 6, which is characterized in that the water total water consumption added in blender is mwt=
mwn+mwa；
mwa=ma*wa；
Wherein, mwtTotal water consumption for every cubic metre of cement base haydite sound-absorbing material；
mwnThe mixing water without haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
mwaThe water used of haydite pre-wetted treatment for every cubic metre of cement base haydite sound-absorbing material；
maHaydite dosage for every cubic metre of cement base haydite sound-absorbing material；
waFor the haydite water absorption rate of 1 hour.
8. sound-absorbing wall according to claim 7, which is characterized in that the cylindrical compress strength refers to haydite being put into standard pressure
In cylinder, under forcing press effect, corresponding intensity value when being pressed into 20mm, fa=P/F, wherein faFor the cylindrical compress strength of haydite, P is
Pressure value when compression distance is 20mm；F is bearing area.
9. sound-absorbing wall according to claim 1, which is characterized in that the water-reducing rate of the water-reducing agent is 20%.
10. sound-absorbing wall according to claim 1, which is characterized in that the shape of the cross section of the cavity is rectangle, fillet
Rectangle, triangle, circle or ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492773.6A CN108249848A (en) | 2017-12-30 | 2017-12-30 | sound-absorbing wall |
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| CN201711492773.6A CN108249848A (en) | 2017-12-30 | 2017-12-30 | sound-absorbing wall |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892430A (en) * | 2018-08-23 | 2018-11-27 | 广东盖特奇新材料科技有限公司 | A kind of lightweight regenerated resources sound-absorbing material and preparation method thereof |
| CN112358234A (en) * | 2020-10-28 | 2021-02-12 | 天工俐德科技发展有限公司 | Ceramsite sound absorption plate and preparation method thereof |
| CN113173775A (en) * | 2021-01-25 | 2021-07-27 | 赖用玉 | Preparation method of high-strength porous sound insulation board |
-
2017
- 2017-12-30 CN CN201711492773.6A patent/CN108249848A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892430A (en) * | 2018-08-23 | 2018-11-27 | 广东盖特奇新材料科技有限公司 | A kind of lightweight regenerated resources sound-absorbing material and preparation method thereof |
| CN112358234A (en) * | 2020-10-28 | 2021-02-12 | 天工俐德科技发展有限公司 | Ceramsite sound absorption plate and preparation method thereof |
| CN113173775A (en) * | 2021-01-25 | 2021-07-27 | 赖用玉 | Preparation method of high-strength porous sound insulation board |
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