CN108218375A - A kind of environmentally protective air-entrained concrete building block and preparation method thereof - Google Patents
A kind of environmentally protective air-entrained concrete building block and preparation method thereof Download PDFInfo
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- CN108218375A CN108218375A CN201810069761.0A CN201810069761A CN108218375A CN 108218375 A CN108218375 A CN 108218375A CN 201810069761 A CN201810069761 A CN 201810069761A CN 108218375 A CN108218375 A CN 108218375A
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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
- C04B28/14—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 calcium sulfate 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
- C04B2111/00017—Aspects relating to the protection of the environment
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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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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of environmentally protective air-entrained concrete building blocks and preparation method thereof, belong to building material field.The environmentally protective air-entrained concrete building block, is counted, raw material includes in parts by weight：70~80 parts of flyash, 50~60 parts of construction waste, 30~36 parts of sand, 24~28 parts of fine sand, 62~68 parts of lime, 45~49 parts of gypsum, 26~36 parts of portland cement, 14~16 parts of aluminium powder, 5.4~6.0 parts of polycarboxylate water-reducer, 6~12 parts of glycyl D leucines, 6~12 parts of 4 carboxyl benzocyclobutene.This kind of environmentally protective air-entrained concrete building block internal porosity is uniform, and water absorption rate is consistent, be applied to building block outer surface mortar and building block bonding force it is higher, reduce the probability that comes off from air-entrained concrete building block surface of mortar.
Description
Technical field
The present invention relates to building material field, more specifically, it be related to a kind of environmentally protective air-entrained concrete building block and
Preparation method.
Background technology
Air entrained concrete is the New Building Materials of a kind of lightweight, high intensity, wherein, building block is main for air entrained concrete
One of product.Air-entrained concrete building block is because having many advantages, such as light weight, heat insulation effect and sound-absorbing effect are good, gradually
It substitutes traditional solid clay brick and is widely used.Stomata in air-entrained concrete building block account for about its volume 60%~
70%, therefore the shape of stomata, size, quantity and distribution almost determine air-entrained concrete building block in air-entrained concrete building block
Most of performance, such as intensity, water suction, heat preservation etc..
During air-entrained concrete building block is prepared, air-entrainment is mixed into material system first, air-entrainment can produce
Angry body is so as to make to generate uniform stomata in air entrained concrete.But during air entrained concrete gets angry and rests, concrete
In bubble rise, effusion, the stomata connection in upper layer concrete, therefore the density of upper strata air-entrained concrete building block is small is average
Aperture is small, and pore size distribution range is wide, and lower floor's air-entrained concrete building block is opposite with upper strata air entrained concrete.Which results in be prepared into
To air-entrained concrete building block in aperture it is inconsistent, it is inconsistent so as to cause the water absorption rate of air-entrained concrete building block.
During air-entrained concrete building block is used, this structure makes the wet transmitting performance of air-entrained concrete building block be deteriorated,
Even if watering is not easy to inside moistening air-entrained concrete building block.Block surfaces moisture evaporation is fast after watering, and inside is not moistened
Wet, after building by laying bricks or stones or plastering, building block directly absorbs moisture from mortar, can cause mortar and the part dehydration of building block contact position and
It cannot be replenished in time, so as to desiccation layering occur, the bonding force between mortar and building block be caused to decline.External wall plastering has good
Good waterproof action, but the destructions such as will appear hollowing when mortar is not Nian Jie with building block firm, come off, so as to cause rainwater edge
It these defects and enters wall, wall is damaged.
Invention content
The purpose of the present invention is to provide a kind of environmentally protective air-entrained concrete building blocks and preparation method thereof, this kind of aerating mixes
Solidifying earth building blocks internal porosity is uniform, and water absorption rate is consistent, be applied to building block outer surface mortar and building block bonding force it is higher, reduce
The probability that mortar comes off from air-entrained concrete building block surface.
The present invention above-mentioned purpose technical scheme is that：A kind of environmentally protective air entrained concrete is built
Block is counted in parts by weight, and raw material includes：70~80 parts of flyash, 50~60 parts of construction waste, 30~36 parts of sand, fine sand
24~28 parts, 62~68 parts of lime, 45~49 parts of gypsum, 26~36 parts of portland cement, 14~16 parts of aluminium powder, polycarboxylic acids diminishing
5.4~6.0 parts of agent, 6~12 parts of glycyl-D-Leu, 6~12 parts of 4- carboxyls benzocyclobutene.
Preferably, the mass ratio of the glycyl-D-Leu and 4- carboxyl benzocyclobutenes is 2:1~2.
Preferably, the mass ratio of the glycyl-D-Leu and 4- carboxyl benzocyclobutenes is 2:1.
Preferably, the construction waste includes cement, plasterboard, concrete, stone, brick, red mud；The construction waste
Average grain diameter be 0.2~0.3mm.
Preferably, the polycarboxylate water-reducer is the mixed of quaternary ammonium salt polycarboxylate water-reducer and maleic amide polycarboxylate water-reducer
Close object.
Preferably, the mass ratio of the quaternary ammonium salt polycarboxylate water-reducer and maleic amide polycarboxylate water-reducer is 1:1.
Preferably, the fineness modulus of the fine sand is 1.6~2.0, average grain diameter is 0.25~0.35mm；The sand
Fineness modulus is 2.7~3.1, average grain diameter is 0.35~0.5mm.
Another object of the present invention is to provide the preparation method of air-entrained concrete building block described above.
The present invention above-mentioned purpose technical scheme is that：A kind of environmentally protective air entrained concrete is built
The preparation method of block, includes the following steps：
Coarse aggregate mixes：It takes flyash, construction waste, sand, fine sand, water, after uniform stirring, weeds out impurity, obtain coarse aggregate
Mixture；
Fine aggregate mixes：Lime, gypsum, portland cement, aluminium powder, polycarboxylate water-reducer, water are taken, increases material system temperature,
After uniform stirring, fine aggregate mixture is obtained；
Blending：Fine aggregate mixture, glycyl-D-Leu, 4- carboxyls benzocyclobutene are added in coarse aggregate mixture,
After even stirring, blend is obtained；
It pours and rests：Rest after blend is poured to mold, environment temperature of resting is 14~18 DEG C, ambient humidity for 45~
It is demoulded after 60%, the 2~4h that rests, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, high temperature and pressure
Steam-cured 4~5 days in environment；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 13~17 days in normal temperature environment.
Preferably, in the steam-cured step of the high temperature and pressure, steam-cured pressure is 1.6~1.8MPa, and temperature is 60~70 DEG C.
Preferably, in the fine aggregate mixing step, 35~45 DEG C of material system temperature.
In conclusion the invention has the advantages that：
1st, the uniform stomata containing 70%-80% in the environmentally protective air-entrained concrete building block that the present invention is prepared, aerating mix
The density of solidifying earth building blocks only has the 1/5 of normal concrete, the 1/3 of solid clay brick, so as to reduce build house basic charge,
Improve the efficiency of construction.Meanwhile the intensity of air-entrained concrete building block is significantly larger than the intensity of solid clay brick.
2nd, the environmentally protective concrete segment that the present invention is prepared can not only utilize the concrete in construction waste, also
The waste material of other calcics can be utilized, e.g., cement, plasterboard, stone, brick, red mud etc. expand available waste material model
It encloses, saves the yield of natural limestone ore deposit, the discharge of exploitation reducig limestone mine percent of greenhouse gases, protecting ecology resource.
3rd, during air-entrained concrete building block is prepared, aluminium powder generates gas in concrete slurry first, and gas makes
Uniform stomata, during air entrained concrete gets angry and rests, glycyl-D-Leu and 4- are generated inside air entrained concrete
Polymerisation occurs for carboxyl benzocyclobutene, and protective film is formed on air vent wall, protects the shape of air vent wall, even if lower floor's coagulation
Gas in soil escapes upward, but the stomata in lower-layer concrete still has, and therefore, the air entrained concrete being prepared is built
Stomata inside block is uniform, and the water absorption rate of air-entrained concrete building block is consistent, when mortar is applied to air-entrained concrete building block outer surface
When, the moisture that building block is absorbed from mortar greatly reduces, and the adhesive strength of mortar and building block increases, and reduces mortar and is mixed from aerating
The probability that solidifying earth building blocks surface comes off.
Specific embodiment
Involved all substances are commercially available in the embodiment of the present invention.
First, embodiment is made
Embodiment 1
Coarse aggregate mixes：Take flyash 75kg, construction waste 55kg, sand 33kg, fine sand 26kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.25mm, and the fineness modulus of fine sand is 1.8, average grain diameter 0.3mm, and the fineness modulus of sand is
2.9th, average grain diameter 0.425mm；
Fine aggregate mixes：Take lime 65kg, gypsum 47kg, portland cement 31kg, aluminium powder 15kg, quaternary ammonium salt polycarboxylate water-reducer
2.85kg, maleic amide polycarboxylate water-reducer 2.85kg, water 80kg, raising material system temperature after uniform stirring, are obtained to 40 DEG C
To fine aggregate mixture；
Blending：Fine aggregate mixture, glycyl-D-Leu 12kg, 4- carboxyl benzocyclobutene 6kg are added in coarse aggregate and mixed
In object, after uniform stirring, blend is obtained；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 16 DEG C, and ambient humidity 52.5% is quiet
It is demoulded after supporting 3h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
65 DEG C, pressure is steam-cured 4.5 day in the environment of 1.7MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 15 days in normal temperature environment.
Embodiment 2
Coarse aggregate mixes：Take flyash 70kg, construction waste 50kg, sand 30kg, fine sand 28kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.3mm, and the fineness modulus of fine sand is 1.6, average grain diameter 0.3mm, and the fineness modulus of sand is
3.1st, average grain diameter 0.35mm；
Fine aggregate mixes：Take lime 62kg, gypsum 45kg, portland cement 26kg, aluminium powder 16kg, quaternary ammonium salt polycarboxylate water-reducer
3kg, maleic amide polycarboxylate water-reducer 2.7kg, water 80kg, raising material system temperature is to 40 DEG C, after uniform stirring, obtains thin
Aggregate mix；
Blending：Fine aggregate mixture, glycyl-D-Leu 9kg, 4- carboxyl benzocyclobutene 9kg are added in coarse aggregate and mixed
In object, after uniform stirring, blend is obtained；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 14 DEG C, and ambient humidity 45% is rested
It is demoulded after 2h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
70 DEG C, pressure is steam-cured 4 day in the environment of 1.8MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 15 days in normal temperature environment.
Embodiment 3
Coarse aggregate mixes：Take flyash 80kg, construction waste 50kg, sand 30kg, fine sand 28kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.2mm, and the fineness modulus of fine sand is 2, average grain diameter 0.35mm, the fineness modulus of sand is 3.1,
Average grain diameter is 0.35mm；
Fine aggregate mixes：Take lime 68kg, gypsum 45kg, portland cement 26kg, aluminium powder 16kg, quaternary ammonium salt polycarboxylate water-reducer
2.7kg, maleic amide polycarboxylate water-reducer 3kg, water 80kg, raising material system temperature is to 45 DEG C, after uniform stirring, obtains thin
Aggregate mix；
Blending：Fine aggregate mixture, glycyl-D-Leu 12kg, 4- carboxyl benzocyclobutene 12kg are added in coarse aggregate and mixed
It closes in object, after uniform stirring, obtains blend；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 18 DEG C, and ambient humidity 45% is rested
It is demoulded after 2h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
70 DEG C, pressure is steam-cured 5 day in the environment of 1.6MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 17 days in normal temperature environment.
Embodiment 4
Coarse aggregate mixes：Take flyash 70kg, construction waste 50kg, sand 36kg, fine sand 24kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.3mm, and the fineness modulus of fine sand is 1.8, average grain diameter 0.25mm, and the fineness modulus of sand is
2.9th, average grain diameter 0.5mm；
Fine aggregate mixes：Take lime 62kg, gypsum 45kg, portland cement 36kg, aluminium powder 14kg, quaternary ammonium salt polycarboxylate water-reducer
3kg, maleic amide polycarboxylate water-reducer 2.85kg, water 80kg, raising material system temperature after uniform stirring, are obtained to 35 DEG C
Fine aggregate mixture；
Blending：Fine aggregate mixture, glycyl-D-Leu 9kg, 4- carboxyl benzocyclobutene 12kg are added in coarse aggregate and mixed
In object, after uniform stirring, blend is obtained；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 14 DEG C, and ambient humidity 45% is rested
It is demoulded after 4h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
60 DEG C, pressure is steam-cured 4.5 day in the environment of 1.8MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 13 days in normal temperature environment.
Embodiment 5
Coarse aggregate mixes：Take flyash 80kg, construction waste 60kg, sand 36kg, fine sand 24kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.2mm, and the fineness modulus of fine sand is 1.6, average grain diameter 0.3mm, and the fineness modulus of sand is
2.9th, average grain diameter 0.5mm；
Fine aggregate mixes：Take lime 68kg, gypsum 49kg, portland cement 36kg, aluminium powder 14kg, quaternary ammonium salt polycarboxylate water-reducer
2.7kg, maleic amide polycarboxylate water-reducer 2.7kg, water 80kg, raising material system temperature after uniform stirring, are obtained to 40 DEG C
Fine aggregate mixture；
Blending：Fine aggregate mixture, glycyl-D-Leu 9kg, 4- carboxyl benzocyclobutene 12kg are added in coarse aggregate and mixed
In object, after uniform stirring, blend is obtained；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 18 DEG C, and ambient humidity 60% is rested
It is demoulded after 4h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
60 DEG C, pressure is steam-cured 4 day in the environment of 1.6MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 15 days in normal temperature environment.
Embodiment 6
Coarse aggregate mixes：Take flyash 70kg, construction waste 60kg, sand 30kg, fine sand 24kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.3mm, and the fineness modulus of fine sand is 2, average grain diameter 0.35mm, the fineness modulus of sand is 2.7,
Average grain diameter is 0.5mm；
Fine aggregate mixes：Take lime 62kg, gypsum 49kg, portland cement 26kg, aluminium powder 14kg, quaternary ammonium salt polycarboxylate water-reducer
3kg, maleic amide polycarboxylate water-reducer 3kg, water 80kg, raising material system temperature after uniform stirring, are carefully collected to 45 DEG C
Expect mixture；
Blending：Fine aggregate mixture, glycyl-D-Leu 6kg, 4- carboxyl benzocyclobutene 12kg are added in coarse aggregate and mixed
In object, after uniform stirring, blend is obtained；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 14 DEG C, and ambient humidity 60% is rested
It is demoulded after 2h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
60 DEG C, pressure is steam-cured 5 day in the environment of 1.8MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 17 days in normal temperature environment.
2nd, comparative example is made
Comparative example 1：Commercially available solid clay building block.
Comparative example 2：
Coarse aggregate mixes：Take flyash 75kg, construction waste 55kg, sand 33kg, fine sand 26kg, water 120kg, uniform stirring
Afterwards, impurity is weeded out, obtains coarse aggregate mixture, wherein, including cement, plasterboard, concrete, stone, brick, red mud, building
The average grain diameter of waste material is 0.25mm, and the fineness modulus of fine sand is 1.8, average grain diameter 0.3mm, and the fineness modulus of sand is
2.9th, average grain diameter 0.425mm；
Fine aggregate mixes：Take lime 65kg, gypsum 47kg, portland cement 31kg, aluminium powder 15kg, quaternary ammonium salt polycarboxylate water-reducer
2.85kg, maleic amide polycarboxylate water-reducer 2.85kg, water 80kg, raising material system temperature after uniform stirring, are obtained to 40 DEG C
To fine aggregate mixture；
Blending：Fine aggregate mixture is added in coarse aggregate mixture, after uniform stirring, obtains blend；
It pours and rests：It rests after blend is poured to mold, environment temperature of resting is 16 DEG C, and ambient humidity 52.5% is quiet
It is demoulded after supporting 3h, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, is in temperature
65 DEG C, pressure is steam-cured 4.5 day in the environment of 1.7MPa；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 15 days in normal temperature environment.
3rd, the performance by the building block in above example and comparative example is tested.
Building block in Example and comparative example is positioned on ground, and ground 300mm above sections are upper strata, ground
300mm tests its compression strength and full water voids rate respectively using lower part as lower floor.
The results are shown in Table 1 for each evaluation index.
The performance test results of building block in 1 each embodiment of table and comparative example
As can be seen that containing 70%-80% in the environmentally protective air-entrained concrete building block that the present invention is prepared from above-mentioned table
Uniform stomata, the density of air-entrained concrete building block only has the 1/5 of normal concrete, the 1/3 of solid clay brick, built so as to reduce
It makes the basic charge in house, improve the efficiency of construction.Meanwhile the intensity of air-entrained concrete building block is significantly larger than solid clay brick
Intensity.
Wherein, comparative example 1 is commercially available solid clay building block, and solid clay builds no a large amount of stomata in the block, strong
Degree is less than the air-entrained concrete building block that the present embodiment is prepared.
Glycyl-D-Leu and 4- carboxyl benzocyclobutenes are added without in comparative example 2, is preparing air-entrained concrete building block
During, aluminium powder generates gas in concrete slurry, and after gas generates stomata in air entrained concrete, air entrained concrete is built
Gas below block rises, and gas is made to be escaped from top, at this point, the density of lower floor's air-entrained concrete building block is big, average pore size is big,
Pore size distribution narrow range causes aperture inside air-entrained concrete building block inconsistent, so as to cause the water suction of air-entrained concrete building block
Rate is inconsistent.After building by laying bricks or stones or plastering, building block directly absorbs moisture from mortar, and mortar can be caused locally to be lost with building block contact position
It water and cannot be replenished in time, so as to desiccation layering occur, the bonding force between mortar and building block be caused to decline.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of no creative contribution after this specification is read, but as long as at this
It is all protected in the right of invention by Patent Law.
Claims (10)
1. a kind of environmentally protective air-entrained concrete building block, it is characterized in that, it counts in parts by weight, raw material includes：Flyash 70~
80 parts, 50~60 parts of construction waste, 30~36 parts of sand, 24~28 parts of fine sand, 62~68 parts of lime, 45~49 parts of gypsum, silicon
26~36 parts of acid salt cement, 14~16 parts of aluminium powder, 5.4~6.0 parts of polycarboxylate water-reducer, 6~12 parts of glycyl-D-Leu,
6~12 parts of 4- carboxyls benzocyclobutene.
2. a kind of environmentally protective air-entrained concrete building block according to claim 1, it is characterized in that, the glycyl-D- is bright
The mass ratio of propylhomoserin and 4- carboxyl benzocyclobutenes is 2:1~2.
3. a kind of environmentally protective air-entrained concrete building block according to claim 2, it is characterized in that, the glycyl-D- is bright
The mass ratio of propylhomoserin and 4- carboxyl benzocyclobutenes is 2:1.
4. a kind of environmentally protective air-entrained concrete building block according to claim 1, it is characterized in that, the construction waste includes
Cement, plasterboard, concrete, stone, brick, red mud；The average grain diameter of the construction waste is 0.2~0.3mm.
5. a kind of environmentally protective air-entrained concrete building block according to claim 1, it is characterized in that, the polycarboxylate water-reducer
For quaternary ammonium salt polycarboxylate water-reducer and the mixture of maleic amide polycarboxylate water-reducer.
6. a kind of environmentally protective air-entrained concrete building block according to claim 5, it is characterized in that, the quaternary ammonium salt polycarboxylic acids
The mass ratio of water-reducing agent and maleic amide polycarboxylate water-reducer is 1:1.
7. a kind of environmentally protective air-entrained concrete building block according to claim 1, it is characterized in that, the fineness mould of the fine sand
Number is 1.6~2.0, average grain diameter is 0.25~0.35mm；The fineness modulus of the sand is 2.7~3.1, average grain diameter is
0.35~0.5mm.
8. a kind of method for preparing environmentally protective air-entrained concrete building block as described in claim 1, it is characterized in that, including following
Step：Coarse aggregate mixes：It takes flyash, construction waste, sand, fine sand, water, after uniform stirring, weeds out impurity, obtain coarse aggregate
Mixture；
Fine aggregate mixes：Lime, gypsum, portland cement, aluminium powder, polycarboxylate water-reducer, water are taken, increases material system temperature,
After uniform stirring, fine aggregate mixture is obtained；
Blending：Fine aggregate mixture, glycyl-D-Leu, 4- carboxyls benzocyclobutene are added in coarse aggregate mixture,
After even stirring, blend is obtained；
It pours and rests：Rest after blend is poured to mold, environment temperature of resting is 14~18 DEG C, ambient humidity for 45~
It is demoulded after 60%, the 2~4h that rests, obtains concrete block；
High temperature and pressure is steam-cured：Concrete block is cut into the air-entrained concrete building block of 600mm × 240mm × 100mm, high temperature and pressure
Steam-cured 4~5 days in environment；
Maintenance：Air-entrained concrete building block after will be steam-cured stands 13~17 days in normal temperature environment.
9. a kind of preparation method of environmentally protective air-entrained concrete building block according to claim 8, it is characterized in that, the height
In warm high-pressure steaming and cultivating step, steam-cured pressure is 1.6~1.8MPa, and temperature is 60~70 DEG C.
10. a kind of preparation method of environmentally protective air-entrained concrete building block according to claim 8, it is characterized in that, it is described
In fine aggregate mixing step, 35~45 DEG C of material system temperature.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110483003A (en) * | 2019-09-05 | 2019-11-22 | 徐州永腾建材有限公司 | A kind of manufacturing method of environment-friendly aerated concrete block |
| CN111187051A (en) * | 2020-01-16 | 2020-05-22 | 佛冈豪鑫环保建材有限公司 | Autoclaved aerated concrete block brick utilizing construction waste |
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| RU2467974C1 (en) * | 2011-11-11 | 2012-11-27 | Юлия Алексеевна Щепочкина | Crude mixture for making brick |
| CN106045558A (en) * | 2016-06-02 | 2016-10-26 | 湖州汇能新材料科技有限公司 | Aerated concrete block preparation method |
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| RU2467974C1 (en) * | 2011-11-11 | 2012-11-27 | Юлия Алексеевна Щепочкина | Crude mixture for making brick |
| CN106045558A (en) * | 2016-06-02 | 2016-10-26 | 湖州汇能新材料科技有限公司 | Aerated concrete block preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110483003A (en) * | 2019-09-05 | 2019-11-22 | 徐州永腾建材有限公司 | A kind of manufacturing method of environment-friendly aerated concrete block |
| CN111187051A (en) * | 2020-01-16 | 2020-05-22 | 佛冈豪鑫环保建材有限公司 | Autoclaved aerated concrete block brick utilizing construction waste |
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| CN108218375B (en) | 2021-06-22 |
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