CN108424167A - A kind of preparation method of light-weight foam composite concrete wallboard - Google Patents
A kind of preparation method of light-weight foam composite concrete wallboard Download PDFInfo
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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
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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
- C04B2111/40—Porous or lightweight 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
- 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
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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
- 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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Abstract
The present invention relates to concrete and its preparing technical fields, and in particular to a kind of preparation method of light-weight foam composite concrete wallboard, the preparation method of the light-weight foam composite concrete wallboard include the following steps：30~50 parts by weight of flyash, 15~35 parts by weight of cement, 15~30 parts by weight of fine sand, 5~12 parts by weight of diatomite, 3~15 parts by weight of amino modified silica, 3~12 parts by weight of aluminium polychloride, 15~48 parts by weight of lightweight aggregate, 1~5 parts by weight of reinforcing fiber and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；Then water-reducing agent, auxiliary agent and foaming agent is added after mixing, carries out pressing mold to get to concrete panel.The light-weight foam composite concrete wallboard that method through the invention is prepared has the characteristics that light-weight, intensity is high, shock resistance is excellent, disclosure satisfy that construction industry to concrete performance index requirement, has preferable application prospect.
Description
Technical field
The present invention relates to concrete and its preparing technical fields, and in particular to a kind of light-weight foam composite concrete wallboard
Preparation method.
Background technology
In recent years, as the driving of Building Energy Conservation Policy, energy-saving building technology and energy-saving material have rapid development.It is mixed
Solidifying soil is the most commonly used construction material of construction industry, and with the development of economy with the progress of technology, people want construction material
It asks and is also continuously improved, not only require concrete that there is high intensity, durable requirement, and concrete should also meet lightweight, environmental protection
Requirement.The most commonly used normal concrete in industry and civil buildings at present, although intensity (generally 20-30MPa) energy
The requirement of building structure is enough substantially met, but it is heavier.However, at present normal concrete and air entrained concrete belong to it is crisp
Property material, it is easy to generate microcrack because of contraction, even completely destroy.The intensity very low (one of lightweight concrete in the market
As ＜ 5MPa), cannot be satisfied the requirement of building structure, the partition wall or thermal insulation material of non-bearing can only be done.In addition, aerating coagulation wall
Plate is highly brittle, it is easy to transport and work progress in be crushed, and cannot nailing on wallboard again.Therefore, preparing has lightweight high
By force, the foam concrete of waterproof crack resistence function is urgent needs.
Invention content
It is of the existing technology the purpose of the invention is to overcome the problems, such as, a kind of light-weight foam complex coagulation cob wall is provided
The preparation method of plate, the concrete panel being prepared by this method is with light-weight, intensity is high, shock resistance and anti-seismic performance
It is excellent, it disclosure satisfy that construction industry to concrete performance index requirement, has a good application prospect.
To achieve the goals above, the present invention provides a kind of preparation method of light-weight foam composite concrete wallboard, including
Following steps：
(1) waste old grain in the acid solution that pH is 6~6.5 is impregnated into 3~5h, obtains acidification rubber, will be acidified
Rubber and maleic anhydride after mixing, are stirred to react 1~2h at 80~120 DEG C, obtain modified rubber in water；
(2) by 30~50 parts by weight of flyash, 15~35 parts by weight of cement, 15~30 parts by weight of fine sand, diatomite 5~12
Parts by weight, 3~15 parts by weight of amino modified silica, 3~12 parts by weight of aluminium polychloride, 15~48 parts by weight of lightweight aggregate,
1~5 parts by weight of reinforcing fiber and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；
(3) it is added after 0.5~1.5 parts by weight water-reducing agent, the other auxiliary agents of 0~5 parts by weight being uniformly dispersed in water above-mentioned
In mixture, continues 60~150s of stirring and obtain mixed slurry；Finally 1~3 parts by weight of blowing agent is added in mixture slurry,
Stir evenly to obtain concrete material presoma；
(4) concrete material presoma pours into mold, and until reaching the 20~60% of mold volumes amount, by mold
It covers and is tamping, infusion pending, which generates bubble, makes mix expand, and is full of mold, stands 1 hour, the mix after 6~8 hours
I.e. collapsible die is solidified and reached after strength of mould stripping, is then conserved.
Through the above technical solutions, the present invention uses flyash, cement, fine sand, amino modified silica and diatomite
It is compound to be used as aggregate, the interior porosity of concrete is improved, the elasticity modulus of concrete is significantly reduced, while reducing concrete
Bulk density and mass density, have the characteristics that lighting, can be on the surface of rubber granule by being modified to waste old
It introduces charged functional groups and its binding force is improved, by interacting between charge after being mixed with other raw materials to improve concrete
Shock resistance and anti-seismic performance can significantly improve the cracking resistance and intensity of concrete by the way that reinforcing fiber is added, polymerize chlorine
The intensity of concrete can be improved by changing aluminium.The present invention is adjusted by the mutual cooperation between each component, significantly reduces concrete panel
Mass density, improve the strong impact strength and anti-seismic performance of concrete panel, which can be widely applied to build
Build object enclosed structure and horizontal weighing structure.
Specific implementation mode
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of light-weight foam composite concrete wallboard, is made of the raw material of following parts by weight：Flyash
30~50 parts by weight, 15~35 parts by weight of cement, 15~30 parts by weight of fine sand, 5~12 parts by weight of diatomite, amino modified dioxy
3~15 parts by weight of SiClx, 3~12 parts by weight of aluminium polychloride, 15~48 parts by weight of lightweight aggregate, 3~8 weight of waste old grain
Part, 1~5 parts by weight of reinforcing fiber, 1~3 parts by weight of foaming agent, 0.5~1.5 parts by weight of water-reducing agent, 0~5 weight of other auxiliary agents
Part.
In order to further increase the intensity of the lightweight concrete, under optimum condition, the light-weight foam composite concrete
Wallboard is made of the raw material of following parts by weight：35~45 parts by weight of flyash, 20~30 parts by weight of cement, fine sand 20~25
It is parts by weight, 6~10 parts by weight of diatomite, 5~12 parts by weight of amino modified silica, 5~10 parts by weight of aluminium polychloride, light
20~45 parts by weight of aggregate, 2~5 parts by weight of reinforcing fiber, 1~3 parts by weight of foaming agent, subtract 3~6 parts by weight of waste old grain
0.5~1.5 parts by weight of aqua, 0~5 parts by weight of other auxiliary agents.It is furthermore preferred that the light-weight foam composite concrete wallboard, by
The raw material of following parts by weight is made：40 parts by weight of flyash, 25 parts by weight of cement, 23 parts by weight of fine sand, 8 weight of diatomite
Part, 8 parts by weight of amino modified silica, 6 parts by weight of aluminium polychloride, 30 parts by weight of lightweight aggregate, 3~5 weight of waste old grain
Measure part, 5 parts by weight of reinforcing fiber, 2 parts by weight of foaming agent, 1.2 parts by weight of water-reducing agent, 3 parts by weight of other auxiliary agents.
The quality of concrete, preferred stripe can be reduced under conditions of not influencing concrete strength by the way that aglite is added
Under part, the lightweight aggregate in clay haydite, float stone, polyethylene foams, castor-oil plant bar straw and expanded vermiculite at least one
Kind；The grain size of the lightweight aggregate is 1~5mm.
Under optimum condition, the grain size of the rubber granule is 1~5mm.
The present invention, as one of aggregate, can be formed relatively strong using amino modified enough silica between other components
Binding force, to improve the intensity and shock resistance of concrete, under optimum condition, the grain of the amino modified silica
Diameter is 0.5~1mm.
By the way that reinforcing fiber is added in the present invention, the cracking resistance and intensity of concrete can be improved, under optimum condition, institute
It states reinforcing fiber and is selected from least one of polypropylene fibre, poly fibre, glass fibre and alumina silicate fibre.
It can be excellent to further decrease the quality of concrete in inside concrete performance stomata by the way that foaming agent is added
Under the conditions of choosing, the foaming agent is at least one of aluminium powder, magnesium powder, zinc powder, hydrogen peroxide and rosin soap.
Under optimum condition, the water-reducing agent is NF types or FDN types or UNF-2 types or AF types or S types or the efficient diminishing of MF types
Agent.
In order to advanced optimize the comprehensive performance and workability of lightweight concrete, other auxiliary agents are selected from foam stabilizing
At least one of agent, hydrophober, water-retaining agent, early strength agent and retarder.Wherein, the foam stabilizer is dodecyl benzene sulfonic acid
At least one of sodium, polyacrylamide, odium stearate；The hydrophober is organosilicon moisture repellent, silylation hydrophober, tristearin
At least one of sour calcium；The water-retaining agent is hydroxypropyl methyl cellulose ether or hydroxyethyl methyl reinforcing fiber element ether；It is described
Early strength agent is at least one of sodium aluminate, lithium carbonate, anhydrous sodium sulfate；The retarder is citric acid, tartaric acid, glucose
At least one of sour sodium.
The present invention also provides a kind of preparation methods of the light-weight foam composite concrete wallboard, include the following steps：
(1) waste old grain in the acid solution that pH is 6~6.5 is impregnated into 3~5h, obtains acidification rubber, will be acidified
Rubber and maleic anhydride after mixing, are stirred to react 1~2h at 80~120 DEG C, obtain modified rubber in water；
(2) by 30~50 parts by weight of flyash, 15~35 parts by weight of cement, 15~30 parts by weight of fine sand, diatomite 5~12
Parts by weight, 3~15 parts by weight of amino modified silica, 3~12 parts by weight of aluminium polychloride, 15~48 parts by weight of lightweight aggregate,
1~5 parts by weight of reinforcing fiber and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；
(3) it is added after 0.5~1.5 parts by weight water-reducing agent, the other auxiliary agents of 0~5 parts by weight being uniformly dispersed in water above-mentioned
In mixture, continues 60~150s of stirring and obtain mixed slurry；Finally 1~3 parts by weight of blowing agent is added in mixture slurry,
Stir evenly to obtain concrete material presoma；
(4) concrete material presoma pours into mold, and until reaching the 20~60% of mold volumes amount, by mold
It covers and is tamping, infusion pending, which generates bubble, makes mix expand, and is full of mold, stands 1 hour, the mix after 6~8 hours
I.e. collapsible die is solidified and reached after strength of mould stripping, is then conserved.
Under optimum condition, the preparation method of the amino modified silica is：By positive tetrabutyl silicate pH be 10~
It is uniformly mixed in 12 sodium hydrate aqueous solution, 120~150min is then stood at 60~80 DEG C, centrifuge washing obtains nanometer
The nano silicon dioxide is uniformly mixed with Silane coupling agent KH550 in toluene, then at 100~120 DEG C by silica
5~8h of lower reflux.
Under optimum condition, the maintenance process is with 80 DEG C of steam curing 1~16 day, until material reaches design strength；
Or it is heated at 60 DEG C, form removal after 3 hours；Or after form removal, concrete is cut into building block or the wall of various sizes
Plate, then carry out steam curing or natural curing.
The present invention, as aggregate, is improved using flyash, cement, fine sand, amino modified silica and composite diatomite
The interior porosity of concrete panel, significantly reduces the elasticity modulus of concrete panel, while reducing the bulk density of concrete
And mass density, have the characteristics that lighting, by being modified to waste old, can introduce and charge on the surface of rubber granule
Its binding force improves, to improve the anti-of concrete panel by interacting between charge after being mixed with other raw materials in functional group
Impact and anti-seismic performance can significantly improve the cracking resistance and intensity of concrete wall, polymerize chlorine by the way that reinforcing fiber is added
The intensity of concrete can be improved by changing aluminium.The present invention is adjusted by the mutual cooperation between each component, significantly reduces concrete panel
Mass density, improve the strong impact strength and anti-seismic performance of concrete panel, which can be widely applied to build
Build object enclosed structure and horizontal weighing structure.
Embodiment 1
(1) 4 parts by weight waste old grains are impregnated into 4h in the acid solution that pH is 6~6.5, obtains acidification rubber, it will
It is acidified rubber and 10 parts by weight maleic anhydride in water after mixing, is stirred to react 1h at 100 DEG C, obtains modified rubber；
Positive tetrabutyl silicate is uniformly mixed in the sodium hydrate aqueous solution that pH is 10~12, is then stood at 60 DEG C
120min, centrifuge washing obtain nano silicon dioxide, and the nano silicon dioxide and Silane coupling agent KH550 are mixed in toluene
It closes uniformly, then flow back at 100~120 DEG C 6h, and it is 0.5mm to obtain grain size, and surface amino groups content is the amino of 0.6mmol/g
Improved silica；
(2) by 40 parts by weight of flyash, 25 parts by weight of cement, 23 parts by weight of fine sand, 8 parts by weight of diatomite, amino modified
8 parts by weight of silica, 6 parts by weight of aluminium polychloride, 10 parts by weight of clay haydite (1~5mm), 10 parts by weight of float stone (1~
5mm), 10 parts by weight of polyethylene foams, 5 parts by weight of polypropylene fibre and modified rubber mix under mechanical agitation
It is even to obtain mixture；
(3) by polycarboxylate water-reducer (model PASP-Ca is purchased from Shandong Yuan Lian Chemical Co., Ltd.s) 1.2 parts by weight, 1 weight
Measure part neopelex, 0.5 parts by weight of calcium stearate, 0.5 parts by weight hydroxyethyl methyl reinforcing fiber element ether, 0.5 weight
Above-mentioned powder China is added in amount part sodium aluminate and 0.5 parts by weight sodium gluconate after being uniformly dispersed in water, continue stirring 60~
150s obtains mixed slurry；Finally 2 parts by weight hydrogen peroxide (5wt%) are added in mixture slurry, stir evenly to obtain concrete
Material precursor；
(4) concrete material presoma pours into mold, and until reaching the 30% of mold volumes amount, mold is covered
It is tamping, waits for that hydrogen peroxide generates bubble and mix is made to expand, be full of mold, stand 1 hour, mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then into natural curing 28 days.
Embodiment 2
(1) 3 parts by weight waste old grains are impregnated into 3h in the acid solution that pH is 6~6.5, obtains acidification rubber, it will
It is acidified rubber and 9 parts by weight maleic anhydride in water after mixing, is stirred to react 1h at 120 DEG C, obtains modified rubber；
Positive tetrabutyl silicate is uniformly mixed in the sodium hydrate aqueous solution that pH is 11~12, is then stood at 80 DEG C
150min, centrifuge washing obtain nano silicon dioxide, and the nano silicon dioxide and Silane coupling agent KH550 are mixed in toluene
It closes uniformly, then flow back at 120 DEG C 5h, and it is 1mm to obtain grain size, and surface amino groups content is amino modified the two of 0.8mmol/g
Silica；
(2) 35 parts by weight of flyash, 35 parts by weight of cement, 15 parts by weight of fine sand, 12 parts by weight of diatomite, polyethylene are steeped
5 parts by weight of foam plastics (1~5mm), 10 parts by weight of expanded vermiculite, 12 parts by weight of aluminium polychloride, poly fibre 1
Parts by weight and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；
(3) by 1.5 parts by weight by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1
Parts by weight neopelex, 1 parts by weight of calcium stearate, 1 parts by weight hydroxyethyl methyl reinforcing fiber element ether, 1 parts by weight
Above-mentioned powder China is added in sodium aluminate and 1 parts by weight sodium gluconate after being uniformly dispersed in water, continue 60~150s of stirring and obtain
To mixed slurry；Finally 1 parts by weight hydrogen peroxide (5wt%) is added in mixture slurry, stir evenly before concrete material
Drive body；
(4) concrete material presoma pours into mold, and until reaching the 20% of mold volumes amount, mold is covered
It is tamping, waits for that hydrogen peroxide generates bubble and mix is made to expand, be full of mold, stand 1 hour, mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then into natural curing 28 days.
Embodiment 3
(1) 6 parts by weight waste old grains are impregnated into 5h in the acid solution that pH is 6~6.5, obtains acidification rubber, it will
It is acidified rubber and 15 parts by weight maleic anhydride in water after mixing, is stirred to react 2h at 80 DEG C, obtains modified rubber；
Positive tetrabutyl silicate is uniformly mixed in the sodium hydrate aqueous solution that pH is 10~11, is then stood at 70 DEG C
120min, centrifuge washing obtain nano silicon dioxide, and the nano silicon dioxide and Silane coupling agent KH550 are mixed in toluene
It closes uniformly, then flow back at 100 DEG C 8h, and it is 1mm to obtain grain size, and surface amino groups content is amino modified the two of 1.2mmol/g
Silica；
(2) by 45 parts by weight of flyash, 15 parts by weight of cement, 30 parts by weight of fine sand, 5 parts by weight of diatomite, amino modified
48 parts by weight of silica, 3 parts by weight of aluminium polychloride, 10 parts by weight of clay haydite (1~5mm), 18 parts by weight of float stone (1~
5mm), 20 parts by weight of expanded vermiculite (1~5mm), 5 parts by weight of poly fibre and modified rubber are in mechanical agitation item
Mixture is uniformly mixed to obtain under part；
(3) by 0.5 parts by weight by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1
Parts by weight neopelex, 0.5 parts by weight of calcium stearate, 1 parts by weight hydroxyethyl methyl reinforcing fiber element ether, 0.5 weight
Above-mentioned powder China is added in amount part sodium aluminate and 1 parts by weight sodium gluconate after being uniformly dispersed in water, continue stirring 60~
150s obtains mixed slurry；Finally 3 parts by weight hydrogen peroxide (5wt%) are added in mixture slurry, stir evenly to obtain concrete
Material precursor；
(4) concrete material presoma pours into mold, and until reaching the 60% of mold volumes amount, mold is covered
It is tamping, waits for that hydrogen peroxide generates bubble and mix is made to expand, be full of mold, stand 1 hour, mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then into natural curing 28 days.
Embodiment 4
(1) 8 parts by weight waste old grains are impregnated into 3h in the acid solution that pH is 6~6.5, obtains acidification rubber, it will
It is acidified rubber and 20 parts by weight maleic anhydride in water after mixing, is stirred to react 1.5h at 120 DEG C, obtains being modified rubber
Glue；
Positive tetrabutyl silicate is uniformly mixed in the sodium hydrate aqueous solution that pH is 11, is then stood at 75 DEG C
120min, centrifuge washing obtain nano silicon dioxide, and the nano silicon dioxide and Silane coupling agent KH550 are mixed in toluene
It closes uniformly, then flow back at 120 DEG C 8h, and it is 0.5mm to obtain grain size, and surface amino groups content is the amino modified of 0.5mmol/g
Silica；
(2) by 30 parts by weight of flyash, 30 parts by weight of cement, 20 parts by weight of fine sand, 10 parts by weight of diatomite, amino modified
5 parts by weight of silica, 10 parts by weight of aluminium polychloride, 10 parts by weight of float stone (1~5mm), 10 weight of polyethylene foams
Part, 2 parts by weight of glass fibre and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；
(3) by 0.8 parts by weight by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1
Parts by weight neopelex, 1 parts by weight sodium aluminate and 1 parts by weight sodium gluconate are added after being uniformly dispersed in water
Powder China is stated, continues 60~150s of stirring and obtains mixed slurry；1 parts by weight hydrogen peroxide (5wt%) is finally added to mixing
In slurry, concrete material presoma is stirred evenly to obtain；
(4) concrete material presoma pours into mold, and until reaching the 30% of mold volumes amount, mold is covered
It is tamping, waits for that hydrogen peroxide generates bubble and mix is made to expand, be full of mold, stand 1 hour, mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then into natural curing 28 days.
Embodiment 5
(1) 5 parts by weight waste old grains are impregnated into 5h in the acid solution that pH is 6~6.5, obtains acidification rubber, it will
It is acidified rubber and 10 parts by weight maleic anhydride in water after mixing, is stirred to react 2h at 100 DEG C, obtains modified rubber；
Positive tetrabutyl silicate is uniformly mixed in the sodium hydrate aqueous solution that pH is 12, is then stood at 45 DEG C
150min, centrifuge washing obtain nano silicon dioxide, and the nano silicon dioxide and Silane coupling agent KH550 are mixed in toluene
It closes uniformly, then flow back at 110 DEG C 6h, and it is 1mm to obtain grain size, and surface amino groups content is amino modified the two of 0.8mmol/g
Silica；
(2) by 50 parts by weight of flyash, 20 parts by weight of cement, 25 parts by weight of fine sand, 6 parts by weight of diatomite, amino modified
2 parts by weight of silica 1,5 parts by weight of aluminium polychloride, 10 parts by weight of clay haydite (1~5mm), 15 parts by weight of float stone (1~
5mm), 15 parts by weight of polyethylene foams, 5 parts by weight of expanded vermiculite, 2 parts by weight of glass fibre, 3 parts by weight of alumina silicate fibre
Mixture is uniformly mixed to obtain under mechanical agitation with modified rubber；
(3) by 2 parts by weight by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s) in water
In be uniformly dispersed after above-mentioned powder China is added, continue 60~150s of stirring and obtain mixed slurry；Finally by 1.5 parts by weight dioxygens
Water (5wt%) is added in mixture slurry, stirs evenly to obtain concrete material presoma；
(4) concrete material presoma pours into mold, and until reaching the 50% of mold volumes amount, mold is covered
It is tamping, waits for that hydrogen peroxide generates bubble and mix is made to expand, be full of mold, stand 1 hour, mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then into natural curing 28 days.
Comparative example 1
According to the method for embodiment 1, the difference is that：Waste old is not modified.
Comparative example 2
According to the method for embodiment 1, the difference is that：Amino modified silica is substituted using silica.
Experimental example 1：The performance of concrete panel prepared by embodiment 1-5 and comparative example 1-2 is tested, experiment knot
Fruit is as shown in table 1.
The performance table of each concrete panel in table 1 embodiment 1-5 and comparative example 1-2
| Density rating/kg/m3 | Compression strength/MPa | Water absorption rate/% | |
| GB/T2542-2003 | GB/T29062-2012 | GB/T11970-1997 | |
| Embodiment 1 | 580 | 5.3 | 7.5 |
| Embodiment 2 | 650 | 5.8 | 7.6 |
| Embodiment 3 | 650 | 4.9 | 8.3 |
| Embodiment 4 | 700 | 4.5 | 8.5 |
| Embodiment 5 | 750 | 4.8 | 9.6 |
| Comparative example 1 | 600 | 3.1 | 11.0 |
| Comparative example 2 | 615 | 2.9 | 9.8 |
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In the skill of the present invention
In art conception range, technical scheme of the present invention can be carried out a variety of simple variants, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to
Protection scope of the present invention.
Claims (8)
1. a kind of preparation method of light-weight foam composite concrete wallboard, which is characterized in that include the following steps：
(1) waste old grain in the acid solution that pH is 6~6.5 is impregnated into 3~5h, obtains acidification rubber, rubber will be acidified
In water after mixing with maleic anhydride, it is stirred to react 1~2h at 80~120 DEG C, obtains modified rubber；
(2) by 30~50 parts by weight of flyash, 15~35 parts by weight of cement, 15~30 parts by weight of fine sand, 5~12 weight of diatomite
Part, 3~15 parts by weight of amino modified silica, 3~12 parts by weight of aluminium polychloride, 15~48 parts by weight of lightweight aggregate, enhancing
1~5 parts by weight of fiber and modified rubber are uniformly mixed to obtain mixture under mechanical agitation；
(3) above-mentioned mixing is added after 0.5~1.5 parts by weight water-reducing agent, the other auxiliary agents of 0~5 parts by weight being uniformly dispersed in water
In object, continues 60~150s of stirring and obtain mixed slurry；Finally 1~3 parts by weight of blowing agent is added in mixture slurry, is stirred
It is uniform to obtain concrete material presoma；
(4) concrete material presoma pours into mold, and until reaching the 20~60% of mold volumes amount, mold is covered
It is tamping, infusion pending, which generates bubble, makes mix expand, and is full of mold, stands 1 hour, and mix solidifies after 6~8 hours
And reach after strength of mould stripping i.e. collapsible die, then conserved.
2. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the amino
The preparation method of improved silica is：Positive tetrabutyl silicate is mixed in the sodium hydrate aqueous solution that pH is 10~12
It is even, 120~150min is then stood at 60~80 DEG C, centrifuge washing obtains nano silicon dioxide, by the nanometer titanium dioxide
Silicon is uniformly mixed with Silane coupling agent KH550 in toluene, and then flow back at 100~120 DEG C 5~8h.
3. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the light bone
Material is selected from least one of clay haydite, float stone, polyethylene foams, castor-oil plant bar straw and expanded vermiculite.
4. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the enhancing
Fiber is selected from least one of polypropylene fibre, poly fibre, glass fibre and alumina silicate fibre.
5. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the foaming
Agent is at least one of aluminium powder, magnesium powder, zinc powder, hydrogen peroxide and rosin soap.
6. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the diminishing
Agent is NF types or FDN types or UNF-2 types or AF types or S types or MF type high efficiency water reducing agents.
7. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that described other
Auxiliary agent is selected from least one of foam stabilizer, hydrophober, water-retaining agent, early strength agent and retarder.
8. the preparation method of light-weight foam composite concrete wallboard according to claim 1, which is characterized in that the foam stabilizing
Agent is at least one of neopelex, polyacrylamide, odium stearate；
The hydrophober is at least one of organosilicon moisture repellent, silylation hydrophober, calcium stearate；
The water-retaining agent is hydroxypropyl methyl cellulose 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 at least one of citric acid, tartaric acid, sodium gluconate.
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| CN201810407080.0A CN108424167A (en) | 2018-05-02 | 2018-05-02 | A kind of preparation method of light-weight foam composite concrete wallboard |
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| CN108424167A true CN108424167A (en) | 2018-08-21 |
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| CN111689727A (en) * | 2020-04-30 | 2020-09-22 | 吴江笨鸟墙面科技有限公司 | Preparation method of foam concrete thermal insulation brick |
| WO2021035585A1 (en) * | 2019-08-28 | 2021-03-04 | 黄贺明 | Artificial porous volcanic rock board and preparation method therefor |
| CN112624690A (en) * | 2020-12-18 | 2021-04-09 | 金华职业技术学院 | Manufacturing method of ceramsite aerated concrete light wall board |
| CN113416032A (en) * | 2021-08-24 | 2021-09-21 | 南通惠雅建材科技有限公司 | Concrete wallboard |
| CN113582717A (en) * | 2021-07-24 | 2021-11-02 | 重庆鑫科混凝土有限公司 | Light aggregate concrete and preparation process thereof |
| CN113929389A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | High-strength lightweight concrete and preparation method thereof |
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2018
- 2018-05-02 CN CN201810407080.0A patent/CN108424167A/en not_active Withdrawn
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| WO2021035585A1 (en) * | 2019-08-28 | 2021-03-04 | 黄贺明 | Artificial porous volcanic rock board and preparation method therefor |
| CN111689727A (en) * | 2020-04-30 | 2020-09-22 | 吴江笨鸟墙面科技有限公司 | Preparation method of foam concrete thermal insulation brick |
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| CN112624690A (en) * | 2020-12-18 | 2021-04-09 | 金华职业技术学院 | Manufacturing method of ceramsite aerated concrete light wall board |
| CN113582717A (en) * | 2021-07-24 | 2021-11-02 | 重庆鑫科混凝土有限公司 | Light aggregate concrete and preparation process thereof |
| CN113582717B (en) * | 2021-07-24 | 2022-07-22 | 重庆鑫科新型建筑材料有限责任公司 | Light aggregate concrete and preparation process thereof |
| CN113416032A (en) * | 2021-08-24 | 2021-09-21 | 南通惠雅建材科技有限公司 | Concrete wallboard |
| CN113929389A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | High-strength lightweight concrete and preparation method thereof |
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