CN108529941A - A kind of self-insulating light concrete wall - Google Patents
A kind of self-insulating light concrete wall Download PDFInfo
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- CN108529941A CN108529941A CN201810407140.9A CN201810407140A CN108529941A CN 108529941 A CN108529941 A CN 108529941A CN 201810407140 A CN201810407140 A CN 201810407140A CN 108529941 A CN108529941 A CN 108529941A
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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
- C04B2201/30—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
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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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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to concrete and its preparing technical fields, and in particular to a kind of self-insulating light concrete wall is made of the raw material of following parts by weight：25~45 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, 3~12 parts by weight of compound porous fiber, 15~48 parts by weight of lightweight aggregate, 3~8 parts by weight of waste old grain, 1~3 parts by weight of the first foaming agent, 0.5~1.5 parts by weight of water-reducing agent, 0~5 parts by weight of other auxiliary agents；The compound porous fiber is made of following substance：10~30 parts by weight of first polymer powder, 18~56 parts by weight of second polymer powder, 0.6~10 parts by weight of the second foaming agent, 1~6 parts by weight of carbonate, 10~30 parts by weight of chain extender, 5~20 parts by weight of graphene oxide.The self-insulating light concrete wall of the present invention has the characteristics that light-weight, intensity is high, good weatherability.
Description
Technical field
The present invention relates to concrete and its preparing technical fields, and in particular to a kind of self-insulating light concrete wall.
Background technology
Building energy conservation is to realize the very important one side of low-carbon economy.China will continue greatly within very long one period
Power carries out building energy conservation emission reduction, Development of Green Building and circular economy, and construction material greenization will be as wherein developing
Main way.A variety of excellent performances possessed by foam concrete, such as Lightness good, noninflammability is good, and thermal and insulating performance is good, ring
The characteristics of guaranteed cost is good, and anti-seismic performance is good, adjustable indoor humidity conforms exactly to the requirement of construction material greenization, along with bubble
Foam concrete can largely use industrial residue, and production and construction is convenient, and the performances such as cheap impart its higher cost performance
And economic efficient latent.
The most commonly used normal concrete wall in industry and civil buildings at present, although intensity (generally 20-
The requirement of building structure can 30MPa) be substantially met, but it is heavier.However, existing concrete wall and aerating coagulation
Cob wall body belongs to fragile material, it is easy to generate microcrack because of contraction, even completely destroy, cannot be satisfied building structure
It is required that the partition wall or thermal insulation material of non-bearing can only be done.Therefore, the foam with high-strength light, waterproof crack resistence function is prepared
Concrete wall 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 self-insulating light concrete walls are provided
Body, it has, and light-weight, intensity is high, and the feature that heat insulation effect is excellent, disclosure satisfy that construction industry refers to concrete wall performance
Mark requires, and has a good application prospect.
To achieve the goals above, the present invention provides a kind of self-insulating light concrete wall, by following parts by weight
Raw material is made：25~45 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, 3~12 parts by weight of compound porous fiber, 15~48 parts by weight of lightweight aggregate, 3~8 parts by weight of waste old grain, the first foaming agent
1~3 parts by weight, 0.5~1.5 parts by weight of water-reducing agent, 0~5 parts by weight of other auxiliary agents；
The compound porous fiber is made of following substance：10~30 parts by weight of first polymer powder, second polymer
18~56 parts by weight of powder, 0.6~10 parts by weight of the second foaming agent, 1~6 parts by weight of carbonate, 10~30 parts by weight of chain extender,
5~20 parts by weight of graphene oxide.
Through the above technical solutions, the present invention in concrete by being added the composite fibre with multiple pore structure, it is more
On the one hand pore structure can reduce the quality of system, on the other hand can also stop the propagation of sound and heat, play heat insulation
The effect of sound.Further, since the composite fibre is made of inner core and outer wall dual structure, there is higher intensity, can enhance
The intensity of concrete.
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 self-insulating light concrete wall, is made of the raw material of following parts by weight：Flyash 25
~45 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, compound porous fiber 3
~12 parts by weight, 15~48 parts by weight of lightweight aggregate, 3~8 parts by weight of waste old grain, 1~3 parts by weight of the first foaming agent, diminishing
0.5~1.5 parts by weight of agent, 0~5 parts by weight of other auxiliary agents；
The compound porous fiber is made of following substance：10~30 parts by weight of first polymer powder, second polymer
18~56 parts by weight of powder, 0.6~10 parts by weight of the second foaming agent, 1~6 parts by weight of carbonate, 10~30 parts by weight of chain extender,
5~20 parts by weight of graphene oxide.
Under optimum condition, the compound porous fiber is made of following substance：20~24 parts by weight of first polymer powder,
18~22 parts by weight of second polymer powder, 2~6 parts by weight of foaming agent, 2~4 parts by weight of carbonate, 20~24 weight of chain extender
Part, 10~15 parts by weight of graphene oxide.
According to the present invention, by mixing the second foaming agent with first polymer powder in the present invention, and Static Spinning is carried out
Silk generates the polymer fiber containing foaming agent, forms hole inside polymer fiber, therefore, foaming agent is to form polymerization
One of the important component of object internal voids, under preferable case, second foaming agent is selected from 4,4- oxobenzenesulfonyl hydrazide, azo
Diformamide, N, at least one of N '-dinitrosopentamethlyene tetramines.
Under optimum condition, the first polymer powder and second polymer powder are independently selected from poly- inclined fluorine
Ethylene powder, polyethylene terephthalate powder, polyarylate powder, polyvinyl acetate powder, 6 powder of nylon, poly- methyl-prop
At least one of e pioic acid methyl ester powder, polyaniline powder, polyethylene glycol oxide powder, polyvinylpyrrolidonepowder powder.
The matter of concrete wall can be reduced under conditions of not influencing concrete wall intensity by the way that aglite is added
Amount, under optimum condition, the lightweight aggregate in clay haydite, float stone, polyethylene foams, castor-oil plant bar straw and sawdust extremely
Few 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.
It can be in concrete wall internal performance stomata, to further decrease concrete wall by the way that foaming agent is added
Weight, under optimum condition, 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 selected from NF types water-reducing agent, FDN types water-reducing agent, UNF-2 types water-reducing agent, AF types and subtracts
One kind in aqua, S types water-reducing agent and MF type water-reducing agents.
In order to advanced optimize the comprehensive performance and workability of lightweight concrete wall, other auxiliary agents are selected from steady
At least one of infusion, 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 self-insulating light concrete wall, include the following steps：
(1) first polymer powder and the second foaming agent are subjected to spinning after mixing, obtain polymer fiber；Again will
Polymer fiber, chain extender, graphene oxide and carbonate are placed in second polymer powder, react 15 at 60~100 DEG C
~60min finally calcines 30~50min at 150~180 DEG C, obtains compound porous fiber；
(2) by flyash, cement, fine sand, diatomite, lightweight aggregate, compound porous fiber and waste old in mechanical agitation
Under the conditions of be uniformly mixed to obtain powders mixture；
(3) be added in above-mentioned powders mixture after water-reducing agent, other auxiliary agents being uniformly dispersed in water, continue stirring 60~
150s obtains mixed slurry；Finally the first foaming agent is added in mixture slurry, stirs evenly to obtain concrete presoma；
(4) concrete 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.
The polymer emulsion containing foaming agent is subjected to electrostatic spinning first in the present invention, obtains polymer fiber, then
Polymer fiber is placed in again in the polymer emulsion containing carbonate and is further reacted, can be generated in polymeric fiber surface
Then carbonate-doped composite fibre is calcined under composite fibre hot conditions so that foaming agent and carbonate decomposition, to raw
At the composite fibre of porous structure.
In the present invention, graphene oxide is added in the preparation process of compound porous fiber, be graphene oxide with it is porous
Fiber is further reacted, and graphene oxide is coated on to the surface of porous fibre, can improve the strong of porous composite fibre
Degree, reduces the shrinkage of porous fibre, to improve the intensity of concrete, reduces the contract with dry rate of concrete.
By being modified to waste old, charged functional groups can be introduced on the surface of rubber granule, it is mixed with other raw materials
By interacting between charge after conjunction, its binding force is improved, it is described waste and old under optimum condition to improve the intensity of concrete
The modified technique of rubber is：Waste old grain is impregnated into 3~5h in the acid solution that pH is 6~6.5, obtains acidification rubber,
In water after mixing by acidification rubber and PEG 400, it is stirred to react 1~2h at 80~120 DEG C, obtains modified rubber.
Under optimum condition, the maintenance process is with 80 DEG C of steam curing 1~16 day or natural curing 28 days, until material
Reach design strength；Or it is heated at 60 DEG C, form removal after 3 hours；Or after form removal, concrete wall is cut into respectively
The building block of kind size or wallboard, then carry out steam curing or natural curing.
The present invention is compound as aggregate using flyash, cement, fine sand, montmorillonite, diatomite and aglite, improves mixed
The interior porosity of solidifying cob wall body, significantly reduces the elasticity modulus of concrete wall, while the accumulation for reducing concrete wall is close
Degree and mass density, have the characteristics that lighting.The addition of compound porous fiber can significantly improve the cracking resistance of concrete wall
Performance and intensity, while reducing the thermal coefficient of concrete material achieve the effect that heat preservation, heat-insulated.
Embodiment 1
(1) 24kg polyethylene terephthalate powder, 6kg 4,4- oxobenzenesulfonyl hydrazide are carried out after mixing
Spinning, obtains dacron fibre, and spinning technique is：Supply voltage 30KV, spinning environment condition are temperature 25
DEG C, relative humidity 60%；Multi needle spinneret unit syringe needle spacing 15cm, spinneret unit syringe needle quantity are 45；Take poly- couple of 22kg
Polyethylene terephthalate fiber, 20kg ethylene glycol, 12kg graphene oxides and 3kg sodium carbonate are placed in 12kg poly terephthalic acid second
In diester powder, 45min is reacted at 80 DEG C, obtains polymer fiber, then calcines polymer fiber at 160 DEG C
40min obtains compound porous fiber；
4kg waste olds grain is impregnated into 4h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 10kg maleic anhydrides, it is stirred to react 1h at 100 DEG C, obtains modified rubber；
(2) by flyash 35kg, cement 25kg, fine sand 23kg, diatomite 8kg, clay haydite 10kg (1~5mm), float stone
10kg (1~5mm), polyethylene foams 10kg, compound porous fiber 5kg and modified rubber mix under mechanical agitation
It is uniform to obtain powders mixture；
(3) by polycarboxylate water-reducer (model PASP-Ca is purchased from Shandong Yuan Lian Chemical Co., Ltd.s) 1.2kg, 1kg 12
Sodium alkyl benzene sulfonate, 0.5kg calcium stearates, 0.5kg hydroxyethyl methyl reinforcing fiber elements ether, 0.5kg sodium aluminates and 0.5kg grapes
Sodium saccharate is added after being uniformly dispersed in water in above-mentioned powders mixture, is continued 60~150s of stirring and is obtained mixed slurry；Finally
2kg hydrogen peroxide (5wt%) is added in mixture slurry, concrete presoma is stirred evenly to obtain；
(4) concrete presoma pours into mold, and until reaching the 50% of mold volumes amount, and mold is covered envelope
Tightly, it waits for that hydrogen peroxide generates bubble and mix is made to expand, is full of mold, stands 1 hour, mix solidifies simultaneously after 6~8 hours
Reach after strength of mould stripping i.e. collapsible die, then natural curing 28 days, until material reaches design strength to get to self-insulating light
Concrete wall.
Embodiment 2
(1) A, by 6 powder of 20kg nylon and 2kg 4,4- oxobenzenesulfonyl hydrazide carries out spinning, obtains Buddhist nun after mixing
Imperial 6 fibers, spinning technique are：Supply voltage 30KV, spinning environment condition are 25 DEG C of temperature, relative humidity 60%；Multi needle sprays
Silk unit syringe needle spacing 15cm, spinneret unit syringe needle quantity are 45；Take 18kg nylon 6 fibers, 24kg 1,3 butylene glycols,
10kg graphene oxides and 2kg potassium carbonate are placed in 6 powder of 10kg nylon, react 30min at 80 DEG C, obtain polymer fibre
Dimension, then calcines 50min at 150 DEG C by polymer fiber, obtains compound porous fiber；
3kg waste olds grain is impregnated into 3h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 9kg maleic anhydrides, it is stirred to react 1h at 120 DEG C, obtains modified rubber；
(2) by flyash 25kg, cement 35kg, fine sand 15kg, diatomite 12kg, polyethylene foams 5kg (1~
5mm), castor-oil plant bar straw 10kg, compound porous fiber 1kg and modified rubber are uniformly mixed to obtain powder mixing under mechanical agitation
Object；
(3) by 1.5kg by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1kg ten
Dialkyl benzene sulfonic acids sodium, 1kg calcium stearates, 1kg hydroxyethyl methyl reinforcing fiber elements ether, 1kg sodium aluminates and 1kg sodium gluconates
It is added after being uniformly dispersed in water in above-mentioned powders mixture, continues 60~150s of stirring and obtain mixed slurry；It is finally that 1kg is bis-
Oxygen water (5wt%) is added in mixture slurry, stirs evenly to obtain concrete presoma；
(4) concrete presoma pours into mold, and until reaching the 50% of mold volumes amount, and mold is covered envelope
Tightly, it waits for that hydrogen peroxide generates bubble and mix is made to expand, is full of mold, stands 1 hour, mix solidifies simultaneously after 6~8 hours
Reach after strength of mould stripping i.e. collapsible die, then natural curing 28 days, until material reaches design strength to get to self-insulating light
Concrete wall.
Embodiment 3
(1) A, 10kg polyvinyl acetate powder and 2kg azodicarbonamides be subjected to spinning after mixing, obtain poly-vinegar
Sour vinyl fiber, spinning technique are：Supply voltage 30KV, spinning environment condition are 25 DEG C of temperature, relative humidity 60%；Multi needle
Spinneret unit syringe needle spacing 15cm, spinneret unit syringe needle quantity are 45；Take 9kg polyvinyl acetate fibers, 24kg neopentyl glycols
15kg graphene oxides and 4kg sodium carbonate are placed in 30kg polyvinyl acetate powder, are reacted 45min at 75 DEG C, are polymerize
Then polymer fiber is calcined 30min at 180 DEG C, obtains compound porous fiber by fibres；
6kg waste olds grain is impregnated into 5h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 15kg maleic anhydrides, it is stirred to react 2h at 80 DEG C, obtains modified rubber；
(2) by flyash 45kg, cement 15kg, fine sand 30kg, diatomite 5kg, clay haydite 10kg (1~5mm), float stone
18kg (1~5mm), polyethylene foams 20kg (1~5mm), compound porous fiber 5kg and modified rubber are in mechanical agitation item
Powders mixture is uniformly mixed to obtain under part；
(3) by 0.5kg by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1kg ten
Dialkyl benzene sulfonic acids sodium, 0.5kg calcium stearates, 1kg hydroxyethyl methyl reinforcing fiber elements ether, 0.5kg sodium aluminates and 1kg glucose
Sour sodium is added after being uniformly dispersed in water in above-mentioned powders mixture, is continued 60~150s of stirring and is obtained mixed slurry；Finally will
3kg hydrogen peroxide (5wt%) is added in mixture slurry, stirs evenly to obtain concrete presoma；
(4) concrete presoma pours into mold, and until reaching the 50% of mold volumes amount, and mold is covered envelope
Tightly, it waits for that hydrogen peroxide generates bubble and mix is made to expand, is full of mold, stands 1 hour, mix solidifies simultaneously after 6~8 hours
Reach after strength of mould stripping i.e. collapsible die, then natural curing 28 days, until material reaches design strength to get to self-insulating light
Concrete wall.
Embodiment 4
(1) A, 30kg polyarylates powder, 2- methyl-1,3-propanediols and 10kg azodicarbonamides be uniformly mixed it is laggard
Row spinning, obtains polyarylate fiber, and spinning technique is：Supply voltage 60KV, spinning environment condition are 35 DEG C of temperature, relative humidity
90%；Multi needle spinneret unit syringe needle spacing 30cm, spinneret unit syringe needle quantity are 90；Take 28kg polyarylate fibers, 30kg
2- methyl-1s, 3-propanediol, 5kg graphene oxides and 6kg potassium carbonate are placed in 20kg polyarylate powder, are reacted at 100 DEG C
15min obtains polymer fiber, and polymer fiber is then calcined 50min at 150 DEG C, obtains compound porous fiber；
8kg waste olds grain is impregnated into 3h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 20kg maleic anhydrides, it is stirred to react 1.5h at 120 DEG C, obtains modified rubber；
(2) by flyash 40kg, cement 30kg, fine sand 20kg, diatomite 10kg, float stone 10kg (1~5mm), polyethylene
Foamed plastics 10kg, compound porous fiber 2kg and modified rubber are uniformly mixed to obtain powders mixture under mechanical agitation；
(3) by 0.8kg by polycarboxylate water-reducer (model PASP-Ca, be purchased from Shandong Yuan Lian Chemical Co., Ltd.s), 1kg ten
Dialkyl benzene sulfonic acids sodium, 1kg sodium aluminates and 1kg sodium gluconates are added after being uniformly dispersed in water in above-mentioned powders mixture,
Continue 60~150s of stirring and obtains mixed slurry；Finally 1kg hydrogen peroxide (5wt%) is added in mixture slurry, is stirred evenly
Obtain concrete presoma；
(4) concrete presoma pours into mold, and until reaching the 50% of mold volumes amount, and mold is covered envelope
Tightly, it waits for that hydrogen peroxide generates bubble and mix is made to expand, is full of mold, stands 1 hour, mix solidifies simultaneously after 6~8 hours
Reach after strength of mould stripping i.e. collapsible die, then natural curing 28 days, until material reaches design strength to get to self-insulating light
Concrete wall.
Embodiment 5
(1) 15kg polymethylmethacrylate powders and 0.6kg 4,4- oxobenzenesulfonyl hydrazide are carried out after mixing
Spinning, obtains polymethylmethacrylate fibers, and spinning technique is：Supply voltage 10KV, spinning environment condition are 15 DEG C of temperature,
Relative humidity 25%；Multi needle spinneret unit syringe needle spacing 2cm, spinneret unit syringe needle quantity are 6；Take 13kg polymethyls
Sour methyl esters fiber, 10kg 1,8- ethohexadiols, 20kg graphene oxides and 1kg sodium carbonate are placed in 5kg polymethyl methacrylate powder
In end, 60min is reacted at 60 DEG C, obtains polymer fiber, polymer fiber is then calcined into 30min at 180 DEG C, is obtained
Compound porous fiber；
5kg waste olds grain is impregnated into 5h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 10kg maleic anhydrides, it is stirred to react 2h at 100 DEG C, obtains modified rubber；
(2) by flyash 30kg, cement 20kg, fine sand 25kg, diatomite 6kg, clay haydite 10kg (1~5mm), float stone
15kg (1~5mm), polyethylene foams 15kg, sawdust 5kg, compound porous fiber 5kg and modified rubber are in mechanical agitation item
Powders mixture is uniformly mixed to obtain under part；
(3) 2kg is divided polycarboxylate water-reducer in water (model PASP-Ca is purchased from Shandong Yuan Lian Chemical Co., Ltd.s)
It is added in above-mentioned powders mixture after dissipating uniformly, continues 60~150s of stirring and obtain mixed slurry；Finally by 1.5kg hydrogen peroxide
(5wt%) is added in mixture slurry, stirs evenly to obtain concrete presoma；
(4) concrete presoma pours into mold, and until reaching the 50% of mold volumes amount, and mold is covered envelope
Tightly, it waits for that hydrogen peroxide generates bubble and mix is made to expand, is full of mold, stands 1 hour, mix solidifies simultaneously after 6~8 hours
Reach after strength of mould stripping i.e. collapsible die, then natural curing 28 days, until material reaches design strength to get to self-insulating light
Concrete wall.
Comparative example 1
(1) 24kg polyethylene terephthalate powder, 6kg 4,4- oxobenzenesulfonyl hydrazide are carried out after mixing
Spinning, obtains dacron fibre, and spinning technique is：Supply voltage 30KV, spinning environment condition are temperature 25
DEG C, relative humidity 60%；Multi needle spinneret unit syringe needle spacing 15cm, spinneret unit syringe needle quantity are 45；
4kg waste olds grain is impregnated into 4h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 10kg maleic anhydrides, it is stirred to react 1h at 100 DEG C, obtains modified rubber；
(2) by flyash 35kg, cement 25kg, fine sand 23kg, diatomite 8kg, clay haydite 10kg (1~5mm), float stone
10kg (1~5mm), polyethylene foams 10kg, dacron fibre 5kg and modified rubber are in mechanical agitation
Under the conditions of be uniformly mixed to obtain powders mixture；
(3) molding of concrete wall wallboard and maintaining process are the same as embodiment 1.
Comparative example 2
(1) 20kg ethylene glycol and 3kg zinc nitrates is taken to be placed in 12kg polyethylene terephthalate powder, it is anti-at 80 DEG C
45min is answered, polymer fiber is obtained, polymer fiber is then calcined into 40min at 160 DEG C, obtains compound porous fiber；
4kg waste olds grain is impregnated into 4h in the acid solution that pH is 6~6.5, acidification rubber is obtained, rubber will be acidified
In water after mixing with 10kg maleic anhydrides, it is stirred to react 1h at 100 DEG C, obtains modified rubber；
(2) by flyash 35kg, cement 25kg, fine sand 23kg, diatomite 8kg, clay haydite 10kg (1~5mm), float stone
10kg (1~5mm), polyethylene foams 10kg, porous dacron fibre 5kg and modified rubber are in machinery
Powders mixture is uniformly mixed to obtain under stirring condition；
(3) molding of concrete wall wallboard and maintaining process are the same as embodiment 1.
Comparative example 3
(1) 4kg waste olds grain is impregnated into 4h in the acid solution that pH is 6~6.5, obtains acidification rubber, will be acidified
Rubber and 10kg maleic anhydrides after mixing, are stirred to react 1h at 100 DEG C, obtain modified rubber in water；
(2) by flyash 35kg, cement 25kg, fine sand 23kg, diatomite 8kg, clay haydite 10kg (1~5mm), float stone
10kg (1~5mm), polyethylene foams 10kg and modified rubber are uniformly mixed to obtain powder mixing under mechanical agitation
Object；
(3) molding of concrete wall wallboard and maintaining process are the same as embodiment 1.
Experimental example 1：The performance of concrete wall prepared in embodiment 1-5 and comparative example 1-3 is tested, is tested
The results are shown in Table 1.
The performance table of each concrete wall in table 1 embodiment 1-5 and comparative example 1-3
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 (9)
1. a kind of self-insulating light concrete wall, which is characterized in that be made of the raw material of following parts by weight：Flyash 25~
45 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, compound porous fiber 3~
12 parts by weight, 15~48 parts by weight of lightweight aggregate, 3~8 parts by weight of waste old grain, 1~3 parts by weight of the first foaming agent, water-reducing agent
0.5~1.5 parts by weight, 0~5 parts by weight of other auxiliary agents；
The compound porous fiber is made of following substance：10~30 parts by weight of first polymer powder, second polymer powder
18~56 parts by weight, 0.6~10 parts by weight of the second foaming agent, 1~6 parts by weight of carbonate, 10~30 parts by weight of chain extender, oxidation
5~20 parts by weight of graphene.
2. self-insulating light concrete wall according to claim 1, which is characterized in that the compound porous fiber by with
Lower substance is made：20~24 parts by weight of first polymer powder, 18~22 parts by weight of second polymer powder, 2~6 weight of foaming agent
Measure part, 2~4 parts by weight of carbonate, 20~24 parts by weight of chain extender, 10~15 parts by weight of graphene oxide.
3. self-insulating light concrete wall according to claim 2, which is characterized in that second foaming agent is selected from 4,
4- oxobenzenesulfonyl hydrazide, azodicarbonamide, N, at least one of N '-dinitrosopentamethlyene tetramines.
4. self-insulating light concrete wall according to claim 1, which is characterized in that the first polymer powder and
Second polymer powder be independently selected from Kynoar powder, polyethylene terephthalate powder, polyarylate powder,
Polyvinyl acetate powder, 6 powder of nylon, polymethylmethacrylate powder, polyaniline powder, polyethylene glycol oxide powder, poly- second
At least one of alkene pyrrolidone powder.
5. self-insulating light concrete wall according to claim 1, which is characterized in that the lightweight aggregate is made pottery selected from clay
At least one of grain, float stone, polyethylene foams, castor-oil plant bar straw and sawdust；
The grain size of the lightweight aggregate is 1~5mm.
6. self-insulating light concrete wall according to claim 1, which is characterized in that first foaming agent is aluminium
At least one of powder, magnesium powder, zinc powder, hydrogen peroxide and rosin soap.
7. self-insulating light concrete wall according to claim 1, which is characterized in that the water-reducing agent subtracts selected from NF types
One kind in aqua, FDN types water-reducing agent, UNF-2 types water-reducing agent, AF types water-reducing agent, S types water-reducing agent and MF type water-reducing agents.
8. self-insulating light concrete wall according to claim 1, which is characterized in that other auxiliary agents are selected from foam stabilizing
At least one of agent, hydrophober, water-retaining agent, early strength agent and retarder.
9. self-insulating light concrete wall according to claim 1, which is characterized in that the foam stabilizer is dodecyl
At least one of benzene sulfonic acid sodium salt, 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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| CN111677153A (en) * | 2020-04-30 | 2020-09-18 | 吴江笨鸟墙面科技有限公司 | Construction method of heat-insulating concrete wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443727A (en) * | 2003-02-27 | 2003-09-24 | 穆桢子 | High-strength light concrete and its production method |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443727A (en) * | 2003-02-27 | 2003-09-24 | 穆桢子 | High-strength light concrete and its production method |
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| Title |
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| 卫亚明: "泡沫纤维", 《广东化纤技术通讯》 * |
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| CN111677153A (en) * | 2020-04-30 | 2020-09-18 | 吴江笨鸟墙面科技有限公司 | Construction method of heat-insulating concrete wall |
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