CN105731965A - Production method for lightweight aggregate for concrete - Google Patents
Production method for lightweight aggregate for concrete Download PDFInfo
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- CN105731965A CN105731965A CN201610065103.5A CN201610065103A CN105731965A CN 105731965 A CN105731965 A CN 105731965A CN 201610065103 A CN201610065103 A CN 201610065103A CN 105731965 A CN105731965 A CN 105731965A
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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
-
- 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
- C04B20/00—Use 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
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1022—Non-macromolecular compounds
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
Abstract
The invention relates to a production method for lightweight aggregate for concrete. The production method comprises the following steps: firstly preparing an aggregate semi-finished product for lightweight aggregate for concrete from the following raw materials in parts by weight: 18-20 parts of gel materials, 55-60 parts of fine aggregates, 3-5 parts of a regulator, 18-25 parts of a reinforcing agent, 0.25-0.3 part of a coagulation accelerator, 0.05-0.1 part of a foaming agent, 0.05-0.1 part of a foam stabilizer, and 0.15-0.2 part of an admixture; regulating a ratio of water to materials to be 0.45-0.55; and preparing a lightweight aggregate finished product for concrete from the following raw materials in parts by weight: 1 part of a water repellent, 15-20 parts of a diluent and 15-20 parts of aggregate semifinished product particles. A lightweight aggregate product produced by the production method is nontoxic and harmless, is high in cylinder compressive strength, is low in water absorption, is small in freeze thawing quality loss, and can meet the requirements of the northern cold region on the concrete light aggregates; the working environment and labor intensity of an industrial worker are improved; and the raw material cost can be reduced, the utilization rate of industrial wastes is increased, the energy consumption is reduced, and the benefits of enterprises and the social benefits are maximized.
Description
Technical field
The present invention relates to a kind of construction material, particularly relate to the production method of a kind of the reinforcement of concrete lightweight aggregate.
Background technology
The kind of current lightweight aggregate concrete lightweight aggregate mainly has natural weight aggregate such as Pumex, scoria；Industrial waste such as lytag, expanded slag pearl；Artificial light aggregate is haydites of book structure, leca, expanded perlite etc. such as.According to the term and definition of GB/T17431, light-weight aggregate refers to that bulk density is not more than 1200kg/m3The general name of thick, fine aggregate.Lightweight aggregate is divided into by generation type: artificial lightweight aggregate--light coarse aggregate (haydite etc.) and light fine aggregate (placer etc.)；Natural light-weight aggregate--Pumex, scoria etc.；Industrial residue light-weight aggregate--cinder, self-igniting coal gangue etc..
The intensity of lightweight aggregate barrel-shaped mast measures, and strength grade is divided into 11 grades by cube resistance to compression normal intensity.The water absorption rate of light coarse aggregate: the bulk density 200～1200kg/m of artificial lightweight aggregate and industrial residue light-weight aggregate3, 1h water absorption rate 10～30%；Lytag bulk density 600～900kg/m3, 1h water absorption rate is not more than 20%.
In the northern China especially cold district such as northeast, northwest, in construction material, the performance indications of most critical are that water absorption rate requires low, and requirement of strength is high, and life requirement is good, and freezing-thawing cycles should be greater than F50.But except natural weight aggregate--except Pumex, the water absorption rate of other lightweight aggregate 1h is all more than 10%.Owing to its water absorption rate is high, freeze thawing mass loss is big, causes that its freezing-thawing cycles is far smaller than F50, it is impossible to meet the demand producing or using lightweight aggregate concrete component of north cold area.At present, natural weight aggregate is prohibited exploitation by administration sections such as State Council's national environmental protection and tourisms, therefore northern China most area, and what building product and construction enterprises cannot solve lightweight aggregate carrys out source problem.If adopting existing artificial lightweight aggregate and industrial residue light-weight aggregate, can while production cost be high, secondary pollution is caused again to production environment, it it is one of this industrial workers's key factor suffering actual bodily harm, industrial workers remains high because of environmental pollution prevalence, wherein especially in the majority with pulmonary carcinoma and hepatocarcinoma.
Summary of the invention
The invention provides the production method of a kind of the reinforcement of concrete lightweight aggregate, this product is nontoxic, and cylindrical compress strength is high, and water absorption rate is low, and freeze thawing mass loss is little, it is possible to meet the north cold area demand to concrete light aggregate；Improve industrial working environment and labor intensity；Cost of material consumption can be reduced simultaneously, improve the utilization rate of trade waste, save energy resource consumption so that enterprise and social benefit maximize.
In order to achieve the above object, the present invention realizes by the following technical solutions:
The production method of a kind of the reinforcement of concrete lightweight aggregate, comprises the steps:
1) the aggregate semi-finished product of the reinforcement of concrete lightweight aggregate are prepared；
A) aggregate semi-finished product are made up of following raw materials in parts by weight ratio: Binder Materials 18～20 parts；Fine aggregate 55～60 parts；Regulator 3～5 parts；Reinforcing agent 18～25 parts；Coagulant 0.25～0.3 part；Foaming agent 0.05～0.1 part；Foam stabilizer 0.05～0.1 part；Additive 0.15～0.2 part；Ratio of water to material 0.45～0.55；Wherein: Binder Materials is Portland cement, fine aggregate is iron tailings powder, and regulator is Gypsum Fibrosum, and reinforcing agent is quick lime；
B) exported by material conveyor respectively by the raw material except foaming agent and water, electronic scale automatic gauge adds material agitator, after mixing and stirring, adds water stirring 1.5～2min by ratio of water to material；Foaming agent is poured in foaming machine, in foaming agent: the ratio of water=1:5～7 adds water and stirs into foaming suspension；
C) pouring into a mould front 0.5～1min addition foaming suspension at material and remix stirring 40～50s, injection molding machine is also incubated 50～60 DEG C on machine, preliminary more than maintenance 2h；
D) entering steam pressure groove after the aggregate semi-finished product demoulding after preliminary maintenance, deliver to autoclave and carry out steam press maintenance, the operating pressure in steam press maintenance process controls at 1.80～1.85MPa, and temperature controls at 205～215 DEG C；
E) after steam press maintenance terminates, natural curing 28～30 days, send into dry kiln, drying time >=24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is detected by GB/T11969 " steam-pressing aero-concrete method for testing performance ": entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；
F) qualified after testing aggregate semi-finished product are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 60～65%, bulk density 400～425kg/m3, cylindrical compress strength 3.2～4.2MPa, the aggregate semi-finished granules material made input semi-finished product storehouse is standby；
2) the reinforcement of concrete lightweight aggregate finished product is prepared；
G) following raw material ratio by weight is got the raw materials ready, hydrophober 1 part, diluent 15～20 parts, 15～20 parts of aggregate semi-finished granules material；
H) hydrophober and diluent are measured by weight, mix homogeneously after injection immersion trough；After immersion is made, aggregate semi-finished granules material is carried out immersion, immersion time 2～3s by bucket conveyor；Particles of aggregates material after immersion is promoted to dry in the sun control tower, and dry in the sun more than 24h hour is to being lightweight aggregate finished product after drying；
I) lightweight aggregate finished product is sent into finished bin after product inspection is qualified or dispatches from the factory.
Described Binder Materials is P.O42.5MPa Portland cement；Fine aggregate is the iron tailings powder of particle diameter 0.10～0.5mm, clay content < 3%；Regulator is the Gypsum Fibrosum of particle diameter 0.05～0.07mm, CaSO4·2H2O content >=90%；Reinforcing agent is the quick lime of particle diameter 0.05～0.07mm, CaO content >=80%；Coagulant is the compound early strength agent of polycarboxylic acids, solid content >=30%；Foaming agent is defat aluminium powder, particle diameter 0.013～0.018mm, Al content >=99.5%；Foam stabilizer is the one in oxirane, fatty alcohol ether, Oxidized paraffin wax；Additive is the one in barium stearate, zinc stearate, calcium stearate.
Described hydrophober is the one in fatty acid potassium, methyl silicon sodium alcoholate, ethyl sodium silanolate；Diluent is pure water.
Compared with prior art, the invention has the beneficial effects as follows:
1) trade waste is utilized to produce concrete light aggregate, its entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa；24h water absorption rate≤0.5%, freeze thawing mass loss is little, it is possible to meet the demand that north cold area produces and makes lightweight aggregate concrete；
2) product is nontoxic, has fire prevention, heat insulation simultaneously, insulation, freeze proof, sound insulation, energy-conserving and environment-protective, good endurance advantage；
3) production process environmental protection, improves industrial working environment and labor intensity；Cost of material consumption can be reduced simultaneously, improve the utilization rate of trade waste, save energy resource consumption so that enterprise and social benefit maximize.
Detailed description of the invention
The production method of a kind of the reinforcement of concrete lightweight aggregate of the present invention, comprises the steps:
1) the aggregate semi-finished product of the reinforcement of concrete lightweight aggregate are prepared；
A) aggregate semi-finished product are made up of following raw materials in parts by weight ratio: Binder Materials 18～20 parts；Fine aggregate 55～60 parts；Regulator 3～5 parts；Reinforcing agent 18～25 parts；Coagulant 0.25～0.3 part；Foaming agent 0.05～0.1 part；Foam stabilizer 0.05～0.1 part；Additive 0.15～0.2 part；Ratio of water to material 0.45～0.55；Wherein: Binder Materials is Portland cement, fine aggregate is iron tailings powder, and regulator is Gypsum Fibrosum, and reinforcing agent is quick lime；
B) exported by material conveyor respectively by the raw material except foaming agent and water, electronic scale automatic gauge adds material agitator, after mixing and stirring, adds water stirring 1.5～2min by ratio of water to material；Foaming agent is poured in foaming machine, in foaming agent: the ratio of water=1:5～7 adds water and stirs into foaming suspension；
C) pouring into a mould front 0.5～1min addition foaming suspension at material and remix stirring 40～50s, injection molding machine is also incubated 50～60 DEG C on machine, preliminary more than maintenance 2h；
D) entering steam pressure groove after the aggregate semi-finished product demoulding after preliminary maintenance, deliver to autoclave and carry out steam press maintenance, the operating pressure in steam press maintenance process controls at 1.80～1.85MPa, and temperature controls at 205～215 DEG C；
E) after steam press maintenance terminates, natural curing 28～30 days, send into dry kiln, drying time >=24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is detected by GB/T11969 " steam-pressing aero-concrete method for testing performance ": entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；
F) qualified after testing aggregate semi-finished product are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 60～65%, bulk density 400～425kg/m3, cylindrical compress strength 3.2～4.2MPa, the aggregate semi-finished granules material made input semi-finished product storehouse is standby；
2) the reinforcement of concrete lightweight aggregate finished product is prepared；
G) following raw material ratio by weight is got the raw materials ready, hydrophober 1 part, diluent 15～20 parts, 15～20 parts of aggregate semi-finished granules material；
H) hydrophober and diluent are measured by weight, mix homogeneously after injection immersion trough；After immersion is made, aggregate semi-finished granules material is carried out immersion, immersion time 2～3s by bucket conveyor；Particles of aggregates material after immersion is promoted to dry in the sun control tower, and dry in the sun more than 24h hour is to being lightweight aggregate finished product after drying；
I) lightweight aggregate finished product is sent into finished bin after product inspection is qualified or dispatches from the factory.
Described Binder Materials is P.O42.5MPa Portland cement；Fine aggregate is the iron tailings powder of particle diameter 0.10～0.5mm, clay content < 3%；Regulator is the Gypsum Fibrosum of particle diameter 0.05～0.07mm, CaSO4·2H2O content >=90%；Reinforcing agent is the quick lime of particle diameter 0.05～0.07mm, CaO content >=80%；Coagulant is the compound early strength agent of polycarboxylic acids, solid content >=30%；Foaming agent is defat aluminium powder, particle diameter 0.013～0.018mm, Al content >=99.5%；Foam stabilizer is the one in oxirane, fatty alcohol ether, Oxidized paraffin wax；Additive is the one in barium stearate, zinc stearate, calcium stearate.
Described hydrophober is the one in fatty acid potassium, methyl silicon sodium alcoholate, ethyl sodium silanolate；Diluent is pure water.
Following example are carried out under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.In following embodiment, method therefor is conventional method if no special instructions.
[embodiment 1]
The production process first step: materials described below ratio by weight is made aggregate semi-finished product.
Select and storage material by country's building standard, by conveyer, various raw materials are inputted raw material cabin；By conveyer output, electronic scale automatic gauge during production；Raw material ratio by weight includes:
P.O42.5MPa Portland cement 18 parts；60 parts of iron tailings powder；Gypsum Fibrosum 3 parts；Quick lime 18.45 parts；The compound early strength agent of polycarboxylic acids 0.25 part；0.1 part of oxirane；Barium stearate 0.15 part.
Above raw material adds material agitator, after mixing and stirring, adds water by ratio of water to material 0.55, stirs 1.5min.
Defat aluminium powder 0.05 weight portion is poured in foaming machine, additionally adds the water of 0.3 weight portion, stir into foaming suspension.
Before material cast, 1min adds foaming suspension and remixes and stir 40s, injection molding machine preliminary maintenance 2h at 50～60 DEG C of temperature on machine.
The aggregate semi-finished product demoulding voluntarily after preliminary maintenance, enters steam pressure groove, delivers to autoclave and carries out steam press maintenance, and the operating pressure in steam press maintenance process controls at 1.80MPa, and temperature controls at 215 DEG C.
After steam press maintenance terminates, natural curing 28 days, send into dry kiln, dry 24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is detected by GB/T11969 " steam-pressing aero-concrete method for testing performance ": entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；Actually detected result: entity density 850kg/m3, comprcssive strength 8.5；Aggregate semi-finished product qualified after testing are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 60, bulk density 400kg/m3；Cylindrical compress strength 3.3MPa；Aggregate semi-finished granules material is inputted semi-finished product storehouse standby.
Production process second step is that materials described below ratio by weight is made lightweight aggregate finished product.
By 1 part of fatty acid potassium, pure water 15 parts, measuring by weight, after injecting immersion trough, mix homogeneously makes immersion.
After immersion is made, aggregate semi-finished granules material 20 weight portion is carried out immersion, immersion time 3s by bucket conveyor；Being promoted to dry in the sun control tower after immersion, the dry in the sun time, 30h dried to particles of aggregates material.
Lightweight aggregate product inspection: water absorption rate≤0.5%.
Particles of aggregates material finished product after the assay was approved sends into finished bin.
[embodiment 2]
The production process first step: materials described below ratio by weight is made aggregate semi-finished product.
Select and storage material by country's building standard, by conveyer, various raw materials are inputted raw material cabin；By conveyer output, electronic scale automatic gauge during production；Raw material ratio by weight includes:
P.O42.5MPa Portland cement 18 parts；58 parts of iron tailings powder；Gypsum Fibrosum 3.4 parts；Quick lime 20 parts；The compound early strength agent of polycarboxylic acids 0.295 part；Fatty alcohol ether 0.1 part；Zinc stearate 0.15 part.
Above raw material adds material agitator, after mixing and stirring, adds water by ratio of water to material 0.50, stirs 1.5min.
Defat aluminium powder 0.055 weight portion is poured in foaming machine, additionally adds the water of 1.0 weight portions, stir into foaming suspension.
Before material cast, 0.5min adds foaming suspension and remixes and stir 50s, injection molding machine preliminary maintenance 2h at 50～60 DEG C of temperature on machine.
The aggregate semi-finished product demoulding voluntarily after preliminary maintenance, enters steam pressure groove, delivers to autoclave and carries out steam press maintenance, and the operating pressure in steam press maintenance process controls at 1.85MPa, and temperature controls at 205 DEG C.
After steam press maintenance terminates, natural curing 28 days, send into dry kiln, dry 28h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is tested by GB/T11969 " steam-pressing aero-concrete method for testing performance ".Entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；Actually detected result: entity density 875kg/m3, comprcssive strength 9.5MPa；Aggregate semi-finished product qualified after testing are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 63%, bulk density 410kg/m3；Cylindrical compress strength 3.4MPa.
Aggregate semi-finished granules material is inputted semi-finished product storehouse standby.
Production process second step is that materials described below ratio by weight is made lightweight aggregate finished product.
By methyl silicon sodium alcoholate 1 part, pure water 20 parts, measuring by weight, after injecting immersion trough, mix homogeneously makes immersion.
After immersion is made, aggregate semi-finished granules material 20 weight portion is carried out immersion, immersion time 3s by bucket conveyor；Being promoted to dry in the sun control tower after immersion, the dry in the sun time, 24h dried to particles of aggregates material.
Lightweight aggregate product inspection: water absorption rate≤0.5%.
Particles of aggregates material finished product after the assay was approved sends into finished bin.
[embodiment 3]
The production process first step: materials described below ratio by weight is made aggregate semi-finished product.
Select and storage material by country's building standard, by conveyer, various raw materials are inputted raw material cabin；By conveyer output, electronic scale automatic gauge during production；Raw material ratio by weight includes:
P.O42.5MPa Portland cement 18 parts；58.5 parts of iron tailings powder；Gypsum Fibrosum 3.36 parts；Quick lime 19.5 parts；The compound early strength agent of polycarboxylic acids: 0.28 part；Oxidized paraffin wax 0.1 part；Calcium stearate 0.2 part；
Above raw material adds material agitator, after mixing and stirring, adds water by ratio of water to material 0.50, stirs 1.5min.
Pouring in foaming machine by defat aluminium powder 0.06 weight portion, additionally add water 1.2 weight portions, stirs into foaming suspension.
Before material is poured into a mould, 1min addition foaming suspension remixes stirring 40s, injection molding machine 50～60 DEG C of preliminary maintenance 2h on machine.
The aggregate semi-finished product demoulding voluntarily after preliminary maintenance, enters steam pressure groove, delivers to autoclave and carries out steam press maintenance, and the operating pressure in steam press maintenance process controls at 1.85MPa, and temperature controls at 215 DEG C.
After steam press maintenance terminates, natural curing 28 days, send into dry kiln, dry 24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is tested by GB/T11969 " steam-pressing aero-concrete method for testing performance ".Entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；Actually detected result: entity density 880kg/m3, comprcssive strength 10.5MPa；Aggregate semi-finished product qualified after testing are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 63%, bulk density 418kg/m3；Cylindrical compress strength 3.75MPa.
Aggregate semi-finished granules material is inputted semi-finished product storehouse standby.
Production process second step is that materials described below ratio by weight is made lightweight aggregate finished product.
By ethyl sodium silanolate 1 part, pure water 18 parts, measuring by weight, after injecting immersion trough, mix homogeneously makes immersion.
After immersion is made, aggregate semi-finished granules material 18 weight portion is carried out immersion, immersion time 2s by bucket conveyor；Being promoted to dry in the sun control tower after immersion, the dry in the sun time, 26h dried to particles of aggregates material.
Lightweight aggregate product inspection: water absorption rate≤0.5%.
Particles of aggregates material finished product after the assay was approved sends into finished bin.
[embodiment 4]
The production process first step: materials described below ratio by weight is made aggregate semi-finished product.
Select and storage material by country's building standard, by conveyer, various raw materials are inputted raw material cabin；By conveyer output, electronic scale automatic gauge during production；Raw material ratio by weight includes:
P.O42.5MPa Portland cement 20 parts；55.5 parts of iron tailings powder；Gypsum Fibrosum 3.4 parts；Quick lime 20.5 parts；The compound early strength agent of polycarboxylic acids 0.3 part；Fatty alcohol ether 0.1 part；Calcium stearate 0.15 part；
Above raw material adds material agitator, after mixing and stirring, adds water by ratio of water to material 0.55, stirs 1.5min.
Defat aluminium powder 0.055 part is poured in foaming machine, additionally adds the water of 1.1 parts, stir into foaming suspension.
Before material is poured into a mould, 1min addition foaming suspension remixes stirring 40s, injection molding machine 50～60 DEG C of preliminary maintenance 2h on machine.
The aggregate semi-finished product demoulding voluntarily after preliminary maintenance, enters steam pressure groove, delivers to autoclave and carries out steam press maintenance, and the operating pressure in steam press maintenance process controls at 1.85MPa, and temperature controls at 215 DEG C.
After steam press maintenance terminates, natural curing 28 days, send into dry kiln, dry 24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is tested by GB/T11969 " steam-pressing aero-concrete method for testing performance ".Entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；Actually detected result: entity density 890kg/m3, comprcssive strength 10.8MPa；Aggregate semi-finished product qualified after testing are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 63%, bulk density 420kg/m3；Cylindrical compress strength 4.0MPa.
Aggregate semi-finished granules material is inputted semi-finished product storehouse standby.
Production process second step is that materials described below ratio by weight is made lightweight aggregate finished product.
By 1 part of fatty acid potassium, pure water 20 parts, measuring by weight, after injecting immersion trough, mix homogeneously makes immersion.
After immersion is made, aggregate semi-finished granules material 20 weight portion is carried out immersion, immersion time 3s by bucket conveyor；Being promoted to dry in the sun control tower after immersion, the dry in the sun time, 28h dried to particles of aggregates material.
Lightweight aggregate product inspection: water absorption rate≤0.5%.
Particles of aggregates material finished product after the assay was approved sends into finished bin.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (3)
1. the production method of a reinforcement of concrete lightweight aggregate, it is characterised in that comprise the steps:
1) the aggregate semi-finished product of the reinforcement of concrete lightweight aggregate are prepared；
A) aggregate semi-finished product are made up of following raw materials in parts by weight ratio: Binder Materials 18～20 parts；Fine aggregate 55～60 parts；Regulator 3～5 parts；Reinforcing agent 18～25 parts；Coagulant 0.25～0.3 part；Foaming agent 0.05～0.1 part；Foam stabilizer 0.05～0.1 part；Additive 0.15～0.2 part；Ratio of water to material 0.45～0.55；Wherein: Binder Materials is Portland cement, fine aggregate is iron tailings powder, and regulator is Gypsum Fibrosum, and reinforcing agent is quick lime；
B) exported by material conveyor respectively by the raw material except foaming agent and water, electronic scale automatic gauge adds material agitator, after mixing and stirring, adds water stirring 1.5～2min by ratio of water to material；Foaming agent is poured in foaming machine, in foaming agent: the ratio of water=1:5～7 adds water and stirs into foaming suspension；
C) pouring into a mould front 0.5～1min addition foaming suspension at material and remix stirring 40～50s, injection molding machine is also incubated 50～60 DEG C on machine, preliminary more than maintenance 2h；
D) entering steam pressure groove after the aggregate semi-finished product demoulding after preliminary maintenance, deliver to autoclave and carry out steam press maintenance, the operating pressure in steam press maintenance process controls at 1.80～1.85MPa, and temperature controls at 205～215 DEG C；
E) after steam press maintenance terminates, natural curing 28～30 days, send into dry kiln, drying time >=24h dries to aggregate semi-finished product；Then according to the half-finished performance of aggregate is detected by GB/T11969 " steam-pressing aero-concrete method for testing performance ": entity density 850～900kg/m3, comprcssive strength 8.5～11.0MPa be qualified；
F) qualified after testing aggregate semi-finished product are processed into the particulate material of particle diameter 5～20mm, and wherein the volume content of 10～15mm grade accounts for 60～65%, bulk density 400～425kg/m3, cylindrical compress strength 3.2～4.2MPa, the aggregate semi-finished granules material made input semi-finished product storehouse is standby；
2) the reinforcement of concrete lightweight aggregate finished product is prepared；
G) following raw material ratio by weight is got the raw materials ready, hydrophober 1 part, diluent 15～20 parts, 15～20 parts of aggregate semi-finished granules material；
H) hydrophober and diluent are measured by weight, mix homogeneously after injection immersion trough；After immersion is made, aggregate semi-finished granules material is carried out immersion, immersion time 2～3s by bucket conveyor；Particles of aggregates material after immersion is promoted to dry in the sun control tower, and dry in the sun more than 24h hour is to being lightweight aggregate finished product after drying；
I) lightweight aggregate finished product is sent into finished bin after product inspection is qualified or dispatches from the factory.
2. the production method of a kind of the reinforcement of concrete lightweight aggregate according to claim 1, it is characterised in that described Binder Materials is P.O42.5MPa Portland cement；Fine aggregate is the iron tailings powder of particle diameter 0.10～0.5mm, clay content < 3%；Regulator is the Gypsum Fibrosum of particle diameter 0.05～0.07mm, CaSO4·2H2O content >=90%；Reinforcing agent is the quick lime of particle diameter 0.05～0.07mm, CaO content >=80%；Coagulant is the compound early strength agent of polycarboxylic acids, solid content >=30%；Foaming agent is defat aluminium powder, particle diameter 0.013～0.018mm, Al content >=99.5%；Foam stabilizer is the one in oxirane, fatty alcohol ether, Oxidized paraffin wax；Additive is the one in barium stearate, zinc stearate, calcium stearate.
3. the production method of a kind of the reinforcement of concrete lightweight aggregate according to claim 1, it is characterised in that described hydrophober is the one in fatty acid potassium, methyl silicon sodium alcoholate, ethyl sodium silanolate；Diluent is pure water.
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| CN111116070A (en) * | 2019-12-19 | 2020-05-08 | 广东清大同科环保技术有限公司 | Baking-free aggregate prepared from iron tailings and preparation method thereof |
| CN111320445A (en) * | 2020-01-16 | 2020-06-23 | 湖北三鑫金铜股份有限公司 | Method for preparing cement-based recycled aggregate from fine copper tailings |
| CN111689727A (en) * | 2020-04-30 | 2020-09-22 | 吴江笨鸟墙面科技有限公司 | Preparation method of foam concrete thermal insulation brick |
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| CN113149691A (en) * | 2021-04-06 | 2021-07-23 | 广西军泰建材有限公司 | Shrinkage-resistant segregation-resistant concrete and preparation method thereof |
| CN114477592A (en) * | 2022-02-08 | 2022-05-13 | 广东台泉环保科技有限公司 | High-salt desalting evaporation equipment and method |
| CN114751684A (en) * | 2022-05-10 | 2022-07-15 | 合肥仁创铸造材料有限公司 | Baking-free iron tailing ceramsite and pervious concrete and preparation method thereof |
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Effective date of registration: 20181205 Address after: 114000 Leymus chinensis Villa in Lishan District, Anshan City, Liaoning Province Patentee after: Angang Steel Structure Co., Ltd. Address before: No. 34 Anle Street, Tiedong District, Anshan City, Liaoning Province Patentee before: Angang Construction Consortium Co., Ltd. |