CN108546034A - A kind of concrete composition of sound-insulating - Google Patents
A kind of concrete composition of sound-insulating Download PDFInfo
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- CN108546034A CN108546034A CN201810414844.9A CN201810414844A CN108546034A CN 108546034 A CN108546034 A CN 108546034A CN 201810414844 A CN201810414844 A CN 201810414844A CN 108546034 A CN108546034 A CN 108546034A
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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
- C04B28/02—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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
Abstract
The invention belongs to technical field of concrete; more particularly to a kind of concrete composition of sound-insulating, the concrete composition includes waste sand-slag, portland cement, fine sand, kaolin, glass bead, porous composite fibre, aglite, waste old material, foaming agent, water-reducing agent and other auxiliary agents；The porous composite fibre includes that polymer powder, metal powder and glass fibre are prepared；The present invention reduces the dead weight of concrete system by porous composite fibre, meanwhile, which can effectively stop the transmission of sound and heat, to play the role of sound-insulating；By in fiberglass surfacing composite porous polymer layer, improving buffering effect of the glass fibre to external force, to improve the intensity of concrete finished product, solve the problems, such as that breakage occurs after being hit for concrete finished product.
Description
Technical field
The invention belongs to technical field of concrete, and in particular to a kind of concrete composition of sound-insulating.
Background technology
Concrete refers to by cementitious material by the general designation of the cementing integral engineered composite material of aggregate, the coagulation usually said
A native word refers to using cement as cementitious material, and sand, stone do aggregate, and with water, additive and admixture coordinate by a certain percentage, warp
Cement concrete obtained from stirring, also referred to as normal concrete, it is widely used in civil engineering.
With economic continuous development, we also destroy directly when enjoying high building caused by armored concrete
Environment makes living environment constantly deteriorate.For building trade, energy consumption is reduced, environmental protection always all will not be out-of-date,
During warming oneself in winter, a large amount of heat is discharged by wall in external environment, and during cooling in summer, largely
Heat invaded by wall indoor, cause the utilization rate of heat to reduce.For this purpose, people have invented heat preservation technology, in building
Wall on insulating layer is set, reduce the heat exchange speed of indoor and outdoor；Traditional heat-preserving wall is largely using granular polystyrene
Thermal insulation board made of main material, at low cost, heat insulation effect is also good, the disadvantage is that being easy burning, and will produce play after burning
Poisonous gas easily causes great personnel casualty accidents；Foam concrete is also used, will be foamed by the foamed system of foaming machine
Agent is mechanically fully foamed, and foam is uniformly mixed with cement mortar, and the pumping system for then passing through foaming machine is showed
Construction or mold molding are poured, a kind of light heat insulation material containing a large amount of sealed porositys is formed through natural curing, however, this bubble
Foam concrete wall belongs to fragile material, is easy to generate microcrack because of contraction, even completely destroy, lightweight coagulation in the market
The intensity of cob wall body is very low, generally less than 5Mpa, cannot be satisfied the requirement of building structure, partition wall that can only be as non-bearing or guarantor
Adiabator；Secondly, this foam concrete water absorption rate is big, reduces heat-insulating property；Furthermore the mechanics of this foam concrete is strong
Spend low, the cracky in transport, work progress.Meanwhile the sound insulation value of the interior wall used in the prior art is poor, adjacent room
The sound of generation is easy to influence each other.
Invention content
For the problems of the prior art, the purpose of the present invention is to provide a kind of concrete with sound-insulating effect
Composition solves the problems, such as that the intensity of concrete wall is low and durability is poor.
To achieve the goals above, the present invention is achieved by the following scheme：
A kind of concrete composition of sound-insulating, including waste sand-slag, portland cement, fine sand, kaolin, vitreous are micro-
Pearl, porous composite fibre, aglite, waste old material, foaming agent, water-reducing agent and other auxiliary agents；
The porous composite fibre includes that polymer powder, metal powder and glass fibre are prepared.
Preferably, the concrete composition includes the raw material of following parts by weight：42~50 parts by weight of waste sand-slag, silicon
15~22 parts by weight of acid salt cement, 15~30 parts by weight of fine sand, 0.5~2 parts by weight of kaolin, 0.5~2 weight of glass bead
Part, 1~5 parts by weight of porous composite fibre, 3~8 parts by weight of aglite, 1~2.5 parts by weight of waste old material, foaming agent 1.5
~3 parts by weight, 0.1~0.8 parts by weight of water-reducing agent, 0~3 parts by weight of other auxiliary agents；
The porous composite fibre includes that following substance is made：30~55 parts by weight of polymer powder, metal powder 0.5
~1.2 parts by weight, 5~15 parts by weight of glass fibre.
Preferably, the concrete composition includes the raw material of following parts by weight：45~48 parts by weight of waste sand-slag, silicon
18~20 parts by weight of acid salt cement, 20~26 parts by weight of fine sand, 1~1.6 parts by weight of kaolin, 1~1.5 weight of glass bead
Part, 2~5 parts by weight of porous composite fibre, 5~7 parts by weight of aglite, 1.5~2.0 parts by weight of waste old material, foaming agent
2.0~2.5 parts by weight, 0.4~0.7 parts by weight of water-reducing agent, 0~3 parts by weight of other auxiliary agents；
The porous composite fibre includes that following substance is made：35~43 parts by weight of polymer powder, metal powder 0.8
~1.0 parts by weight, 8~12 parts by weight of glass fibre.
Preferably, the polymer powder is selected from polyethylene terephthalate, polyarylate, polyvinyl acetate, gathers
At least one of methyl methacrylate, polyethylene glycol oxide, polyvinylpyrrolidone.
Preferably, the metal powder is one kind or combinations thereof in iron powder, magnesium powder, aluminium powder or zinc powder.
Preferably, the aglite be natural pumice, scoria, lytag, expanded slag pearl, leca,
One or more kinds of mixtures in glass bead.
Preferably, the foaming agent is hydrogen peroxide or rosin soap.
Preferably, the grain size of the waste rubber powder is 0.5~3mm.
Preferably, the water-reducing agent be NF types water-reducing agent, FDN types water-reducing agent, UNF-2 types water-reducing agent, AF types water-reducing agent,
One kind in S types water-reducing agent, MF type water-reducing agents.
Preferably, other auxiliary agents in foam stabilizer, hydrophober, water-retaining agent, early strength agent and retarder at least one
Kind.
Compared with prior art, the present invention has the following technical effects：
In concrete composition provided by the invention, the dead weight of concrete system is reduced by porous composite fibre, meanwhile,
The porous composite fibre can effectively stop the transmission of sound and heat, to play the role of sound-insulating；
By in fiberglass surfacing composite porous polymer layer, improving buffering effect of the glass fibre to external force, from
And the intensity of concrete finished product is improved, solve the problems, such as that breakage occurs after being hit for concrete finished product.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is furture elucidated.
The present invention provides a kind of concrete composition of sound-insulating, the concrete composition includes antiquated sand stove
Slag, fine sand, kaolin, glass bead, porous composite fibre, aglite, waste old material, foaming agent, subtracts portland cement
Aqua and other auxiliary agents；
The porous composite fibre includes that polymer powder, metal powder and glass fibre are prepared.
Further, the preparation method of the porous composite fibre includes, by glass fibre, polymer powder and metal powder
It is placed in water, 20~30min of ultrasonic reaction at a temperature of 80~100 DEG C, is then dried to exhausted at a temperature of 50~60 DEG C
It is dry, in this way, obtaining composite fibre, the composite fibre is then immersed into 20~30min of immersion treatment in acid solution, you can
To porous composite fibre.
The glass fibre is a kind of inorganic non-metallic material haveing excellent performance, heat-resist, main component two
Silica, aluminium oxide, calcium oxide, boron oxide, magnesia, sodium oxide molybdena etc..The present invention on the surface of glass fibre by forming one
Layer is filled with the polymeric layer of metal powder, in an acidic solution, metal powder solution modeling, in fiberglass surfacing
Pore structure is formed in polymeric layer, should be filled in concrete with the cellular glass fiber of pore structure, it can be effective
The transmission for stopping sound and heat, to realize the effect of concrete soundproof heat preservation；In addition, cladding porous polymeric nitride layer
There is glass fibre preferable buffering effect to be avoided when by outer force effect to improve the impact strength of concrete
Broken problem occurs.
The present invention does not do specific restriction to the type of the acid solution, can be known to those skilled in the art
, the acid solution can be inorganic acid or organic acid, the inorganic acid can be hydrochloric acid, nitric acid, sulfuric acid, boric acid,
One kind in perchloric acid, hypochlorous acid；The organic acid can be one kind in formic acid, acetic acid, benzoic acid.
Further, according to the present invention, the content of each raw material in the concrete composition can be in wider model
Interior selection is enclosed, in order to ensure concrete has preferable comprehensive performance, the concrete composition includes following parts by weight
Raw material：42~50 parts by weight of waste sand-slag, 15~22 parts by weight of portland cement, 15~30 parts by weight of fine sand, kaolin 0.5~
2 parts by weight, 0.5~2 parts by weight of glass bead, 1~5 parts by weight of porous composite fibre, 3~8 parts by weight of aglite, waste and old rubber
1~2.5 parts by weight of sizing material, 1.5~3 parts by weight of foaming agent, 0.1~0.8 parts by weight of water-reducing agent, 0~3 parts by weight of other auxiliary agents；
The porous composite fibre includes that following substance is made：30~55 parts by weight of polymer powder, metal powder 0.5
~1.2 parts by weight, 5~15 parts by weight of glass fibre.
Further, the concrete composition includes the raw material of following parts by weight：45~48 parts by weight of waste sand-slag,
18~20 parts by weight of portland cement, 20~26 parts by weight of fine sand, 1~1.6 parts by weight of kaolin, 1~1.5 weight of glass bead
Part, 2~5 parts by weight of porous composite fibre, 5~7 parts by weight of aglite, 1.5~2.0 parts by weight of waste old material, foaming agent
2.0~2.5 parts by weight, 0.4~0.7 parts by weight of water-reducing agent, 0~3 parts by weight of other auxiliary agents；
The porous composite fibre includes that following substance is made：35~43 parts by weight of polymer powder, metal powder 0.8
~1.0 parts by weight, 8~12 parts by weight of glass fibre.
In the present invention, the waste sand-slag is a large amount of discarded sand, clinker, dust that foundry generates, these are discarded
Object, which is timely cleared up to transport, avoids pollution workshop condition.
The glass bead is a kind of environmental protection inorganic light heat-insulating material, is the ore in sand form by selected particular particle size in electricity
It is puffing under stove heat mode, by being accurately controlled to temperature and raw material hang time so that product surface melts, stomata envelope
It closes, forms internal porous cavity structure, the closed aglite of surface vitreous, since to form certain particle strong for surface vitreous
Degree, physicochemical property is sufficiently stable, and ageing-resistant fire resistance is strong.Glass bead of the present invention be preferably granularity be 0.5~
1.5mm can specifically enumerate the glass bead produced purchased from Xinyang Heng Ye heat insulating pearlite materials Co., Ltd.
According to the present invention, the polymer powder is selected from polyethylene terephthalate, polyarylate, poly-vinegar acid second
At least one of alkene, polymethyl methacrylate, polyethylene glycol oxide, polyvinylpyrrolidone.
In the present invention, the metal powder is one kind or combinations thereof in iron powder, magnesium powder, aluminium powder or zinc powder.
According to the present invention, the aglite is natural pumice, scoria, lytag, expanded slag pearl, clay pottery
One or more kinds of mixtures in grain, glass bead.
According to the present invention, the foaming agent is hydrogen peroxide or rosin soap, and foaming agent is in concrete, prefabricated profiled
In the process, it foams under certain conditions, forms porous structure, to improve the sound insulation value of concrete wall, reduce coagulation
The thermal coefficient of cob wall body.
According to the present invention, the waste rubber powder is the elastic granule object that waste old particle obtains after crushed,
With stronger voltage endurance capability, certain buffering surplus is provided when concrete is shunk, concrete wall is avoided to split
Seam, it is further preferred that the grain size of the waste rubber powder is 0.5~3mm.
According to the present invention, the water-reducing agent is NF types water-reducing agent, FDN types water-reducing agent, UNF-2 types water-reducing agent, AF types subtract
One kind in aqua, S types water-reducing agent, MF type water-reducing agents.
In the present invention, for the comprehensive performance of further optimised coagulation soil composition and the application property of raising concrete
Can, other auxiliary agents are also contained in concrete composition, other auxiliary agents are selected from foam stabilizer, hydrophober, water-retaining agent, early strength agent
At least one of with retarder.
Wherein, the foam stabilizer be neopelex, dodecyldimethylamine oxide, alkylolamides,
At least one of polyacrylamide, odium stearate, silicone amide；
The hydrophober is at least one of organosilicon moisture repellent, silylation hydrophober, calcium stearate；
The water-retaining agent is hydroxypropyl methyl reinforcing fiber element ether or hydroxyethyl methyl reinforcing fiber element ether；
The early strength agent is at least one of sodium aluminate, lithium carbonate, anhydrous sodium sulfate；
The retarder is citric acid, sodium cellulose glycolate, hydroxyethyl cellulose, tartaric acid, potassium tartrate, winestone
Sour calcium, calcium sulphate dihydrate, calcium sulfite, ferrous sulfate, sodium gluconate, calgon, phosphoric acid, disodium hydrogen phosphate, tricresyl phosphate
At least one of sodium.
The present invention also provides a kind of methods preparing precast concrete wall using above-mentioned concrete composition, including will
Above-mentioned concrete composition is added to stirrer for mixing and obtains powders mixture, and the powders mixture is then poured into mold
In, pouring volume is the 60~70% of mold capacity, then covers mold and is tamping, and the bubble that infusion pending generates makes powder
Expect that mixture expansion is simultaneously full of mold, stand 1h, until powders mixture solidifies and reaches after strength of mould stripping i.e. collapsible die, then
Conserve up to prefabricated concrete wall.
Further, 70 DEG C of steam curing 1~3 day may be used in the maintenance process.
Concrete composition provided by the invention contains porous composite fibre, glass bead and the conduct of waste old material and fills out
Charge, the pore structure of above-mentioned filler material it is of different sizes, in concrete in such a way that multi-level granularity pore structure is compound
Middle formation pore structure, to improve the sound-insulating effect of concrete；
In addition, certain impact resistance is all had in above-mentioned filler material, so as to avoid existing foam concrete wall
Body is excessively fragile, the damaging problem being susceptible to during transport or construction, and improve concrete can workability；
In concrete composition provided by the invention, many obsolete materials in the prior art are used, such as waste sand-slag,
Waste old material provides new processing path for waste in the prior art, avoids waste pollution environment.
The advantages of concrete composition provided by the invention further elucidated above with reference to specific embodiment.
Embodiment 1
A kind of concrete composition, including：Waste sand-slag 47kg, portland cement 19kg, fine sand 24kg, kaolin
1.4kg, glass bead 1.3kg, porous composite fibre 4kg, expanded slag pearl 6kg, waste old material 1.8kg, foaming agent dioxygen
Water 2.3kg, NF type water-reducing agent 0.6kg, foam stabilizer neopelex 1kg, early strength agent sodium aluminate 1kg；
The porous composite fibre includes that following substance is made：Polyethylene terephthalate (Dupont, FR530-
BK) 40kg, iron powder 0.9kg, glass fibre 10kg；
The method that above-mentioned concrete composition prepares precast concrete wall is：
(1) glass fibre, polyethylene terephthalate (Dupont, FR530-BK) and iron powder are placed in water,
Ultrasonic reaction 30min at a temperature of 90 DEG C is then dried to over dry at a temperature of 55 DEG C, is obtained composite fibre, then should
Composite fibre is immersed into immersion treatment 30min in acid solution, you can obtains porous composite fibre；
(2) by waste sand-slag, portland cement, fine sand, kaolin, glass bead, porous composite fibre, expanded slag
Pearl, waste old material, NF types water-reducing agent and other auxiliary agents are added in blender and are uniformly mixed, and foaming agent dioxygen is then added
Water continues to obtain powders mixture after being uniformly mixed；
(3) powders mixture in step (2) is poured into mold, pouring volume is the 60% of mold capacity, then
Mold is covered and is tamping, the bubble that agent hydrogen peroxide to be foamed generates makes powders mixture expand and is full of mold, stands 1h, etc.
I.e. collapsible die is solidified and reached after strength of mould stripping to powders mixture, then uses 70 DEG C of steam curing 1 day to get prefabricated
Concrete wall.
Embodiment 2
A kind of concrete composition, including：Waste sand-slag 45kg, portland cement 18kg, fine sand 20kg, kaolin 1kg,
Glass bead 1kg, porous composite fibre 2kg, expanded slag pearl 5kg, waste old material 1.5kg, foaming agent hydrogen peroxide 2.0kg,
NF type water-reducing agents 0.4kg；
The porous composite fibre includes that following substance is made：Polyethylene terephthalate (Dupont, FR530-
BK) 35kg, iron powder 0.8kg, glass fibre 8kg；
The method of the preparation precast concrete wall of the present embodiment is identical as the preparation method of embodiment 1.
Embodiment 3
A kind of concrete composition, including：Waste sand-slag 48kg, portland cement 20kg, fine sand 26kg, kaolin
1.6kg, glass bead 1.5kg, porous composite fibre 5kg, expanded slag pearl 7kg, waste old material 2.0kg, foaming agent dioxygen
Water 2.5kg, NF type water-reducing agent 0.7kg, foam stabilizer neopelex 0.5kg, water-retaining agent hydroxypropyl methyl reinforcing fiber
Plain ether 1kg, early strength agent sodium aluminate 1kg, retarder citric acid 0.5kg；
The porous composite fibre includes that following substance is made：Polyethylene terephthalate (Dupont, FR530-
BK) 43kg, iron powder 1.0kg, glass fibre 12kg；
The method of the preparation precast concrete wall of the present embodiment is identical as the preparation method of embodiment 1.
Embodiment 4
A kind of concrete composition, including：Waste sand-slag 42kg, portland cement 15kg, fine sand 15kg, kaolin
0.5kg, glass bead 0.5kg, porous composite fibre 1kg, expanded slag pearl 3kg, waste old material 1kg, foaming agent hydrogen peroxide
1.5kg, NF type water-reducing agent 0.1kg；
The porous composite fibre includes that following substance is made：Polyethylene terephthalate (Dupont, FR530-
BK) 30kg, iron powder 0.5kg, glass fibre 5kg；
The method of the preparation precast concrete wall of the present embodiment is identical as the preparation method of embodiment 1.
Embodiment 5
A kind of concrete composition, including：Waste sand-slag 50kg, portland cement 22kg, fine sand 30kg, kaolin 2kg,
Glass bead 2kg, porous composite fibre 5kg, expanded slag pearl 8kg, waste old material 2.5kg, foaming agent hydrogen peroxide 3kg, NF
Type water-reducing agent 0.8kg, foam stabilizer dodecyldimethylamine oxide 0.5kg, water-retaining agent hydroxypropyl methyl reinforcing fiber element ether
1kg, early strength agent anhydrous sodium sulfate 1kg, retarder citric acid 0.5kg；；
The porous composite fibre includes that following substance is made：Polyethylene terephthalate (Dupont, FR530-
BK) 55kg, iron powder 1.2kg, glass fibre 15kg；
The method of the preparation precast concrete wall of the present embodiment is identical as the preparation method of embodiment 1.
Comparative example 1
A kind of concrete composition, including：Waste sand-slag 47kg, portland cement 19kg, fine sand 24kg, kaolin
1.4kg, expanded slag pearl 6kg, waste old material 1.8kg, foaming agent hydrogen peroxide 2.3kg, NF type water-reducing agent 0.6kg, foam stabilizer
Neopelex 1kg, early strength agent sodium aluminate 1kg；
The concrete composition prepare precast concrete wall method be：
(1) by waste sand-slag, portland cement, fine sand, kaolin, expanded slag pearl, waste old material, NF type water-reducing agents
It is added in blender and is uniformly mixed with other auxiliary agents, foaming agent hydrogen peroxide is then added, continue to obtain after being uniformly mixed
To powders mixture；
(2) powders mixture in step (1) is poured into mold, pouring volume is the 60% of mold capacity, then
Mold is covered and is tamping, the bubble that agent hydrogen peroxide to be foamed generates makes powders mixture expand and is full of mold, stands 1h, etc.
I.e. collapsible die is solidified and reached after strength of mould stripping to powders mixture, then uses 70 DEG C of steam curing 1 day to get prefabricated
Concrete wall.
Performance test：
1, the thermal coefficient for the precast concrete wall being prepared according to the test of the test method of GB/T10294, and will
Test result is recorded in table 1；
2, the acoustic absorptivity for the precast concrete wall being prepared according to the test of the method for JJF 223-2009, and will survey
Test result is recorded in table 1；
3, the density for the precast concrete wall being prepared according to the test of the test method of GB/T2542-2003, and will
Test result is recorded in table 1；
4, the compression strength for the precast concrete wall being prepared according to the test of the test method of GB/T29062-2012,
And test result is recorded in table 1；
Table 1：
The precast concrete that concrete composition provided by the invention is prepared is can be seen that in conjunction with above-mentioned test data
Wall has excellent sound-insulating effect, and its compression strength is high, not cracky.
The basic principles and main features and the features of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (10)
1. a kind of concrete composition of sound-insulating, it is characterised in that：Including waste sand-slag, portland cement, fine sand, kaolinite
Soil, glass bead, porous composite fibre, aglite, waste old material, foaming agent, water-reducing agent and other auxiliary agents；
The porous composite fibre includes that polymer powder, metal powder and glass fibre are prepared.
2. the concrete composition of sound-insulating according to claim 1, wherein the concrete composition include with
The raw material of lower parts by weight：42~50 parts by weight of waste sand-slag, 15~22 parts by weight of portland cement, 15~30 parts by weight of fine sand,
0.5~2 parts by weight of kaolin, 0.5~2 parts by weight of glass bead, 1~5 parts by weight of porous composite fibre, 3~8 weight of aglite
Measure part, 1~2.5 parts by weight of waste old material, 1.5~3 parts by weight of foaming agent, 0.1~0.8 parts by weight of water-reducing agent, other auxiliary agents 0
~3 parts by weight；
The porous composite fibre includes that following substance is made：30~55 parts by weight of polymer powder, metal powder 0.5~
1.2 parts by weight, 5~15 parts by weight of glass fibre.
3. the concrete composition of sound-insulating according to claim 1, wherein the concrete composition include with
The raw material of lower parts by weight：45~48 parts by weight of waste sand-slag, 18~20 parts by weight of portland cement, 20~26 parts by weight of fine sand,
1~1.6 parts by weight of kaolin, 1~1.5 parts by weight of glass bead, 2~5 parts by weight of porous composite fibre, 5~7 weight of aglite
Measure part, 1.5~2.0 parts by weight of waste old material, 2.0~2.5 parts by weight of foaming agent, 0.4~0.7 parts by weight of water-reducing agent, other
0~3 parts by weight of auxiliary agent；
The porous composite fibre includes that following substance is made：35~43 parts by weight of polymer powder, metal powder 0.8~
1.0 parts by weight, 8~12 parts by weight of glass fibre.
4. the concrete composition of sound-insulating according to claim 1, wherein the polymer powder is selected from poly- pair
Ethylene terephthalate, polyarylate, polyvinyl acetate, polymethyl methacrylate, polyethylene glycol oxide, polyvinylpyrrolidone
At least one of.
5. the concrete composition of sound-insulating according to claim 1, wherein the metal powder is iron powder, magnesium
One kind or combinations thereof in powder, aluminium powder or zinc powder.
6. the concrete composition of sound-insulating according to claim 1, wherein the aglite be natural pumice,
One or more kinds of mixtures in scoria, lytag, expanded slag pearl, leca, glass bead.
7. the concrete composition of sound-insulating according to claim 1, wherein the foaming agent is hydrogen peroxide or pine
Perfumed soap.
8. the concrete composition of sound-insulating according to claim 1, wherein the grain size of the waste rubber powder is
0.5~3mm.
9. the concrete composition of sound-insulating according to claim 1, wherein the water-reducing agent is NF type diminishings
One kind in agent, FDN types water-reducing agent, UNF-2 types water-reducing agent, AF types water-reducing agent, S types water-reducing agent, MF type water-reducing agents.
10. the concrete composition of sound-insulating according to claim 1, wherein other auxiliary agents be selected from foam stabilizer,
At least one of hydrophober, water-retaining agent, early strength agent and retarder.
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| CN112174692A (en) * | 2020-09-11 | 2021-01-05 | 东南大学 | Sound-absorbing concrete material and preparation method thereof |
| CN113202255A (en) * | 2021-04-29 | 2021-08-03 | 山东高速齐鲁建设集团有限公司 | House sound insulation floor and preparation method thereof |
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