CN108640631A - A method of preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite - Google Patents

A method of preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite Download PDF

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Publication number
CN108640631A
CN108640631A CN201810540688.0A CN201810540688A CN108640631A CN 108640631 A CN108640631 A CN 108640631A CN 201810540688 A CN201810540688 A CN 201810540688A CN 108640631 A CN108640631 A CN 108640631A
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CN
China
Prior art keywords
haydite
fibre reinforced
building block
plasma modification
rubber powder
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CN201810540688.0A
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Chinese (zh)
Inventor
喻林
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ANHUI ZUYUANJING NEW BUILDING MATERIAL Co Ltd
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ANHUI ZUYUANJING NEW BUILDING MATERIAL Co Ltd
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Priority to CN201810540688.0A priority Critical patent/CN108640631A/en
Publication of CN108640631A publication Critical patent/CN108640631A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a kind of methods preparing autoclave aerated concrete building block with plasma modification waste rubber powder fibre reinforced haydite, flyash and water are added in cement mortar mixer and stirred, the mix for putting into quick lime, cement and gypsum, is thoroughly mixed to obtain slurry;Tap water is injected into aluminium powder, is stirred evenly, is poured into above-mentioned gained slurry, after stirring, modified rubber particle, white carbon modified polycarboxylic acid water-reducing agent, fibre reinforced lightweight aggregate haydite is added and quickly stirs, slurry pours into mould;By the die horizontal after cast be put into it is quiet in Cement Concrete rapid curing case stop, taking-up cuts off the extra plush copper of mold with finer wire;Mold is gently put into reaction kettle and carries out steam press maintenance, is taken out, cooling, form removal.After mixing reinforcing agent carbon fiber, compression strength, anti-crack ability and the fracture toughness of building block can be improved;It is mutually modified using white carbon and polycarboxylate water-reducer, it is applied to the preparation of autoclave aerated concrete building block, the mechanical property of building block can be improved.

Description

It is a kind of to prepare steam pressure with plasma modification waste rubber powder-fibre reinforced haydite and add The method of gas concrete segment
Technical field
The invention belongs to autoclave aerated concrete building block fields, and in particular to a kind of plasma modification waste rubber powder- The method that fibre reinforced haydite prepares autoclave aerated concrete building block.
Background technology
With social progress and development, building energy conservation is increasingly valued by people, and is worked wall innovation
More stringent requirements are proposed, and steam-pressing aero-concrete has obtained good development contract as a kind of novel wall material
Machine.Since the working condition of steam-pressing aero-concrete is irregular, it is made to be susceptible to density and heat-insulating property not
The problems such as up to standard;Waste and old rubber particle is added to powder by the present invention on the basis of using for reference rubber concrete advantage
In coal ash steam-pressing aero-concrete, to improve the above problem.
The problem of Cracking that steam-pressing aero-concrete occurs in engineer application at present restricts its application in engineering, and hinders The popularization of its core technology is hindered.The present invention prepares haydite autoclaved aerated coagulation by mixing haydite in steam-pressing aero-concrete Soil solves low steam-pressing aero-concrete compression strength, dry apparent density, dry contraction, thermal coefficient greatly and pore structure is formed The problems such as.
Invention content
The purpose of the present invention is for existing problem, provide a kind of plasma modification waste rubber powder-carbon fiber The method that enhancing haydite prepares autoclave aerated concrete building block.
The present invention is achieved by the following technical solutions:
A method of autoclave aerated concrete building block being prepared with plasma modification waste rubber powder-fibre reinforced haydite, is wrapped Include following steps:
(1)67-68 parts of flyash and 40-50 DEG C of water are added in cement mortar mixer, stir 1-2min, then quickly stirring slowly 2-3min;The mix of 16-17 part quick limes, 13-14 part cement and 3-4 parts of gypsum is put into, stirring 4-5min makes it fully mix It closes, obtains slurry;
(2)Tap water is injected into 0.5-0.6 parts of foaming agent aluminium powders, is uniformly mixed, is poured into above-mentioned gained slurry, quickly After stirring 30-35s, it is quick that modified rubber particle, white carbon modified polycarboxylic acid water-reducing agent, fibre reinforced lightweight aggregate haydite is added 15-20s is stirred, slurry pours into mould, and mold is previously heated to 35-45 DEG C;
(3)By the die horizontal after cast be put into it is quiet in Cement Concrete rapid curing case stop, taken out after 2-4h, mould cut off with finer wire Has extra plush copper;Mold is gently put into reaction kettle and carries out steam press maintenance, is taken out after steam pressure 6-7h, cooling, form removal.
Further, in step (1), (2), (3) calcium silicon ratio be 0.6-0.7, ratio of water to material 0.5-0.6.
Further, step(2)The preparation of middle plasma modification waste and old rubber particle:
Grain size is evenly laid out in glassware for 4-6 part waste and old rubber particles of 200 mesh, it is dry to be put into 24-26 DEG C of air blast After drying 3-4h in dry case, it is put in cold-plasma surfaces treated instrument cavity, starts power supply and vacuum pump, beaten after vacuumizing Flow valve is opened, air is put into, high frequency electric source is opened and starts to discharge, turn off high frequency electric source, flow valve and vacuum after handling 2-4min Pump takes out, obtains modified rubber particle.
Further, step(2)The preparation of middle white carbon modified polycarboxylic acid water-reducing agent:
After the polycarboxylate superplasticizer mother liquor that 1-1.3 parts of solid contents are 40% is heated to 60-62 DEG C, 8-10 parts of white carbons are added, add Heat modification 5-6h obtains white carbon modified polycarboxylic acid water-reducing agent.
Further, step(2)Middle fibre reinforced lightweight aggregate haydite refers to by 17-20 parts of lightweight aggregate haydite and 5-6 The carbon fiber mixing and ball milling of part is uniform.
Further, step(2)Middle slurry pours the height of mold 2/3~3/4.
Further, step(3)The temperature of middle Cement Concrete rapid curing case is 60-70 DEG C, relative humidity 80-90%;Instead To answer the temperature of kettle be 180-185 DEG C, pressure 1.4-1.5MPa.
The present invention has the following advantages compared with prior art:
(1)Waste and old rubber particle belongs to hydrophobic organic material, and cement mortar poor compatibility, using cold-plasma surfaces treated Instrument carries out surface modification to rubber grain, is significantly improved by the hydrophily of rubber grain after corona treatment, point It is fine to dissipate property;Rubber particle surface forms C=C keys after plasma modification, and surface is modified to increase substantially steam pressurized mix Solidifying earth building blocks intensity, block interiors aperture becomes smaller after mixing rubber grain, and structure is more closely knit, the caking property of rubber grain and matrix Enhancing.
(2)It is anti-that polycondensation occurs for the hydroxy functional group of white carbon surface high activity silicone hydroxyl and polycarboxylate water-reducer molecule chain It answers, improves the absorption property of polycarboxylate water-reducer, improve the water reducing ability and adaptability of polycarboxylate water-reducer, can effectively realize White carbon it is evenly dispersed, give full play to it and induce hydrated cementitious and super-volcano ash active effect;Utilize white carbon and poly- carboxylic Sour water-reducing agent be mutually modified, and is applied to the preparation of autoclave aerated concrete building block, retains polycarboxylate water-reducer Efficient diminishing effect, improves the mechanical property of building block.
(3)Lightweight aggregate haydite and carbon fiber mixing and ball milling are uniformly obtained into fibre reinforced lightweight aggregate haydite, incorporation enhancing After agent carbon fiber, compression strength, anti-crack ability and the fracture toughness of building block can be improved;Haydite imparts steam-pressing aero-concrete block The porosity of block, preparing has many advantages, such as that apparent density is small, thermal and insulating performance is good, energy conservation and environmental protection steam pressurized coagulation Soil is a kind of novel environmental-friendly construction material;Solve low steam-pressing aero-concrete compression strength, dry apparent density, it is dry shrink, The problems such as thermal coefficient is big and pore structure is formed.
Specific implementation mode
Embodiment 1
A method of autoclave aerated concrete building block being prepared with plasma modification waste rubber powder-fibre reinforced haydite, is wrapped Include following steps:
(1)67 parts of flyash and 40-50 DEG C of water are added in cement mortar mixer, stir 1min, then quickly stirring 2min slowly; The mix of 16 parts of quick limes, 13 parts of cement and 3 parts of gypsum is put into, stirring 4min makes it be sufficiently mixed, obtains slurry;
(2)Tap water is injected into 0.5 part of foaming agent aluminium powder, is uniformly mixed, is poured into above-mentioned gained slurry, is quickly stirred After 30s, modified rubber particle, white carbon modified polycarboxylic acid water-reducing agent, fibre reinforced lightweight aggregate haydite is added and quickly stirs 15s, slurry pour into mould, and mold is previously heated to 35-45 DEG C;
(3)By the die horizontal after cast be put into it is quiet in Cement Concrete rapid curing case stop, taken out after 2h, mold cut off with finer wire Extra plush copper;Mold is gently put into reaction kettle and carries out steam press maintenance, is taken out after steam pressure 6h, cooling, form removal.
Further, in step (1), (2), (3) calcium silicon ratio be 0.6, ratio of water to material 0.5.
Further, step(2)The preparation of middle plasma modification waste and old rubber particle:
Grain size is evenly laid out in glassware for 4 parts of waste and old rubber particles of 200 mesh, it is put into 24-26 DEG C of forced air drying It after drying 3h in case, is put in cold-plasma surfaces treated instrument cavity, starts power supply and vacuum pump, stream is opened after vacuumizing Valve is measured, air is put into, high frequency electric source is opened and starts to discharge, turn off high frequency electric source, flow valve and vacuum pump after handling 2min, take Go out, obtains modified rubber particle.
Further, step(2)The preparation of middle white carbon modified polycarboxylic acid water-reducing agent:
After the polycarboxylate superplasticizer mother liquor that 1 part of solid content is 40% is heated to 60-62 DEG C, 8 parts of white carbons, heat modification is added 5h obtains white carbon modified polycarboxylic acid water-reducing agent.
Further, step(2)Middle fibre reinforced lightweight aggregate haydite refers to by 17 parts of lightweight aggregate haydite and 5 parts of carbon Fiber mixing and ball milling is uniform.
Further, step(2)Middle slurry pours the height of mold 2/3.
Further, step(3)The temperature of middle Cement Concrete rapid curing case is 60-70 DEG C, relative humidity 80%;Reaction The temperature of kettle is 180-185 DEG C, pressure 1.5MPa.
Embodiment 2
A method of autoclave aerated concrete building block being prepared with plasma modification waste rubber powder-fibre reinforced haydite, is wrapped Include following steps:
(1)68 parts of flyash and 40-50 DEG C of water are added in cement mortar mixer, stir 2min, then quickly stirring 3min slowly; The mix of 17 parts of quick limes, 14 parts of cement and 4 parts of gypsum is put into, stirring 5min makes it be sufficiently mixed, obtains slurry;
(2)Tap water is injected into 0.6 part of foaming agent aluminium powder, is uniformly mixed, is poured into above-mentioned gained slurry, is quickly stirred After 35s, modified rubber particle, white carbon modified polycarboxylic acid water-reducing agent, fibre reinforced lightweight aggregate haydite is added and quickly stirs 20s, slurry pour into mould, and mold is previously heated to 35-45 DEG C;
(3)By the die horizontal after cast be put into it is quiet in Cement Concrete rapid curing case stop, taken out after 4h, mold cut off with finer wire Extra plush copper;Mold is gently put into reaction kettle and carries out steam press maintenance, is taken out after steam pressure 7h, cooling, form removal.
Further, in step (1), (2), (3) calcium silicon ratio be 0.7, ratio of water to material 0.5.
Further, step(2)The preparation of middle plasma modification waste and old rubber particle:
Grain size is evenly laid out in glassware for 6 parts of waste and old rubber particles of 200 mesh, it is put into 24-26 DEG C of forced air drying It after drying 4h in case, is put in cold-plasma surfaces treated instrument cavity, starts power supply and vacuum pump, stream is opened after vacuumizing Valve is measured, air is put into, high frequency electric source is opened and starts to discharge, turn off high frequency electric source, flow valve and vacuum pump after handling 2min, take Go out, obtains modified rubber particle.
Further, step(2)The preparation of middle white carbon modified polycarboxylic acid water-reducing agent:
After the polycarboxylate superplasticizer mother liquor that 1.3 parts of solid contents are 40% is heated to 60-62 DEG C, 10 parts of white carbons are added, heating changes Property 6h, obtains white carbon modified polycarboxylic acid water-reducing agent.
Further, step(2)Middle fibre reinforced lightweight aggregate haydite refers to by 20 parts of lightweight aggregate haydite and 6 parts of carbon Fiber mixing and ball milling is uniform.
Further, step(2)Middle slurry pours the height of mold 3/4.
Further, step(3)The temperature of middle Cement Concrete rapid curing case is 60-70 DEG C, relative humidity 90%;Reaction The temperature of kettle is 180-185 DEG C, pressure 1.4MPa.
Comparative example 1
This comparative example 1 compared with Example 1, in step(2)Middle waste and old rubber particle of the addition without any modification, Method and step all same in addition to this.
Comparative example 2
This comparative example 2 compared with Example 2, in step(2)The lightweight aggregate haydite handled without carbon fiber is added, in addition to this Method and step all same.
Control group
Application No. is:201711048349.2 disclosed a kind of autoclave aerated concrete building block and preparation method thereof.
Resistance to compression after dry volume density, compression strength, jelly in order to compare autoclave aerated concrete building block produced by the present invention Intensity, drying shrinkage value and thermal coefficient, to above-described embodiment 1, embodiment 2, comparative example 1,2 method pair of comparative example The corresponding autoclave aerated concrete building block of autoclave aerated concrete building block and control group obtained is answered to be carried out according to professional standard Performance detection, specific correction data are as shown in table 1 below:
Table 1
The synthesis mechanics of autoclave aerated concrete building block made from the method for the present invention it can be seen from upper table 1 is obtained using quality Apparent improvement is promoted, and autoclave aerated concrete building block has very strong heat preservation and insulation, light, resistance to compression, anticracking, can keep Good mechanics uses quality, and stability is strong, safe to use, and service life is long, and great popularizing value and market are competing Strive power.

Claims (7)

1. a kind of method preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite, It is characterised in that it includes following steps:
(1)67-68 parts of flyash and 40-50 DEG C of water are added in cement mortar mixer, stir 1-2min, then quickly stirring slowly 2-3min;The mix of 16-17 part quick limes, 13-14 part cement and 3-4 parts of gypsum is put into, stirring 4-5min makes it fully mix It closes, obtains slurry;
(2)Tap water is injected into 0.5-0.6 parts of foaming agent aluminium powders, is uniformly mixed, is poured into above-mentioned gained slurry, quickly After stirring 30-35s, it is quick that modified rubber particle, white carbon modified polycarboxylic acid water-reducing agent, fibre reinforced lightweight aggregate haydite is added 15-20s is stirred, slurry pours into mould, and mold is previously heated to 35-45 DEG C;
(3)By the die horizontal after cast be put into it is quiet in Cement Concrete rapid curing case stop, taken out after 2-4h, mould cut off with finer wire Has extra plush copper;Mold is gently put into reaction kettle and carries out steam press maintenance, is taken out after steam pressure 6-7h, cooling, form removal.
2. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that in step (1), (2), (3) calcium silicon ratio be 0.6-0.7, ratio of water to material 0.5- 0.6。
3. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that step(2)The preparation of middle plasma modification waste and old rubber particle:
Grain size is evenly laid out in glassware for 4-6 part waste and old rubber particles of 200 mesh, it is dry to be put into 24-26 DEG C of air blast After drying 3-4h in dry case, it is put in cold-plasma surfaces treated instrument cavity, starts power supply and vacuum pump, beaten after vacuumizing Flow valve is opened, air is put into, high frequency electric source is opened and starts to discharge, turn off high frequency electric source, flow valve and vacuum after handling 2-4min Pump takes out, obtains modified rubber particle.
4. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that step(2)The preparation of middle white carbon modified polycarboxylic acid water-reducing agent:
After the polycarboxylate superplasticizer mother liquor that 1-1.3 parts of solid contents are 40% is heated to 60-62 DEG C, 8-10 parts of white carbons are added, add Heat modification 5-6h obtains white carbon modified polycarboxylic acid water-reducing agent.
5. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that step(2)Middle fibre reinforced lightweight aggregate haydite refers to light by 17-20 parts Aggregate haydite and 5-6 parts of carbon fiber mixing and ball milling are uniform.
6. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that step(2)Middle slurry pours the height of mold 2/3~3/4.
7. a kind of plasma modification waste rubber powder-fibre reinforced haydite preparation steam pressure according to claim 1 adds The method of gas concrete segment, which is characterized in that step(3)The temperature of middle Cement Concrete rapid curing case be 60-70 DEG C, it is relatively wet Degree is 80-90%;The temperature of reaction kettle is 180-185 DEG C, pressure 1.4-1.5MPa.
CN201810540688.0A 2018-05-30 2018-05-30 A method of preparing autoclave aerated concrete building block with plasma modification waste rubber powder-fibre reinforced haydite Pending CN108640631A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111087188A (en) * 2019-12-30 2020-05-01 深圳市宝金华混凝土有限公司 Concrete processing technology doped with waste concrete blocks
CN111441556A (en) * 2020-03-30 2020-07-24 惠州市金卓越实业有限公司 Construction method of damping sound insulation coating

Citations (1)

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CN105777184A (en) * 2016-02-04 2016-07-20 丁捷 Autoclaved aerated concrete building block adopting ceramic polishing waste and preparation method thereof

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CN105777184A (en) * 2016-02-04 2016-07-20 丁捷 Autoclaved aerated concrete building block adopting ceramic polishing waste and preparation method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111087188A (en) * 2019-12-30 2020-05-01 深圳市宝金华混凝土有限公司 Concrete processing technology doped with waste concrete blocks
CN111441556A (en) * 2020-03-30 2020-07-24 惠州市金卓越实业有限公司 Construction method of damping sound insulation coating

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