CN107827414A - A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide - Google Patents
A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide Download PDFInfo
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- CN107827414A CN107827414A CN201711056547.3A CN201711056547A CN107827414A CN 107827414 A CN107827414 A CN 107827414A CN 201711056547 A CN201711056547 A CN 201711056547A CN 107827414 A CN107827414 A CN 107827414A
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- water
- graphene oxide
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- coarse aggregate
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Classifications
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
-
- 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
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation method for the recycled high performance concrete for adulterating graphene oxide, it is characterized in that, Xiang Shuizhong adds cement, silica flour, fully mixes well into slurries, pours into regenerated coarse aggregate, interval stirring, when slurries reach pre-hardening state, after adding poly-vinyl alcohol solution immersion, pull out, drain, ventilating and cooling place natural air drying disposed within, strengthened pretreatment regenerated coarse aggregate；It is put into clear water after cotton stalk is rolled and fully soaks, taking-up drains, and cuts into broken section, dries to dry face state, and feeding enters pulverizing chamber high speed shear and broken up, and air-dries and obtains stalk fibre；Expanded and vitrified small ball and modifying agent are mixed evenly, solidification obtains modified expanded glass bead；By binder materials and the input stirrer for mixing stirring of part water, the hot fine aggregate stirring of intensive treatment regenerated coarse aggregate and day is added, adds stalk fibre, modified expanded glass bead and graphene oxide solution, water reducer and remaining water, stirring obtains the concrete.
Description
Technical field
The present invention relates to concrete field, and in particular to a kind of system for the recycled high performance concrete for adulterating graphene oxide
Preparation Method.
Background technology
As construction industry development is rapid, urbanization step is more and more faster, while reconstruction of the old city town project is more and more, and thus
Generate largely discarded building waste.In China, major part building castoff is all carried out at recovery not by way of science
Reason.Most building castoffs are disposed as rubbish, are arbitrarily piled up in outdoor countryside, or take simple landfill side
Formula is handled.By the way that the regeneration aggregate obtained after broken, screening, cleaning is taken discarded concrete, used coagulation
In autochthonal production, the utilization rate to building castoff can be improved.
The content of the invention
The present invention solves the technical problem of provide a kind of recycled high performance concrete for adulterating graphene oxide
Preparation method, the recycled high performance concrete prepared according to this method have good impact strength and compressive strength.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide, it is characterised in that carry out according to the following steps：
（1）Regenerated coarse aggregate strenuous primary treatment：
20-30 parts by weight regenerated coarse aggregate is added into soaking flushing in running water, is stirred continuously, cleans up, then soak 10-
15min, pull out, natural air drying to moisture content is 2-3% surface dry condition；
Under stirring, 7-9 parts by weight of cement, 8-10 parts by weight of silicon powder are added into water, fully mixes well into slurries；Pour into above-mentioned gained
In regenerated coarse aggregate, interval stirring, when slurries reach pre-hardening state, after adding poly-vinyl alcohol solution immersion 1-2d, pull out, drip
Dry, natural air drying is constantly stirred in ventilating and cooling place disposed within；
（2）The preparation of cotton stalk fibre：
3-4 parts by weight cotton stalk is first carried out to roll processing, places into and 3-4d is fully soaked in clear water, taking-up drains, and shears
Into broken section of 8-10mm, the dry face state for 65-70% is dried to water content, and then feeding enters pulverizing chamber progress high speed shear and beaten
6-10min is dissipated, air-dries and obtains stalk fibre；
（3）The surface coating modification of expanded and vitrified small ball：
9-11 parts by weight expanded and vitrified small balls are crossed into 40-60 mesh sieves, 1-2h are dried at 105-110 DEG C, with modifying agent phenolic aldehyde tree
Fat ethanol solution mixes, and modifying agent is coated uniformly on the surface of expanded and vitrified small ball, then solidifies at 160-162 DEG C
30-34min, obtain modified expanded glass bead；
（4）Recycled high performance concrete：
By 44-46 parts by weight of cement, 13-18 parts by weight fine mineral admixtures flyash, 90-100 parts by weight natural coarse aggregate rubbles
It is uniformly mixed so as to obtain binder materials；
By binder materials and part water input stirrer for mixing, water-cement ratio 0.2-0.25,60-70s is stirred, added in (1)
Gained regenerated coarse aggregate and 16-20 parts by weight fine aggregate natural sands, stir 90-100s, add (2), in (3) resulting material and
0.05-0.07 parts by weight graphene oxide solution, 0.6-0.7 parts by weight high-efficiency water-reducing agent of poly-carboxylic acid and remaining water, water-cement ratio are
0.35-0.4,90-100s is stirred, obtains the concrete.
Wherein, step（1）Middle regenerated coarse aggregate is broken for discarded concrete test block, particle diameter 5-20mm, water-cement ratio
For 0.9-1, poly-vinyl alcohol solution concentration is 10-12%.
Step（2）Middle shearing rotating speed is 20000-22000rpm.
Step（3）Middle modifying agent phenolic resin ethanol solution is to add nothing to the medium volume of 14-16 parts by weight of phenolic resin
Water-ethanol dilutes.
Step（4）Middle cement is 42.5 grades of Portland cements, ballast grain sizes 10-20mm, graphene oxide solution
Mass fraction is 1-2%.
The present invention reaction mechanism and have the beneficial effect that：
Discarded concrete test block is crushed and obtains regenerated coarse aggregate, impurity and dust is removed through rinsing, soaking pre- wet-treating, carries
The interface performance of high regenerated coarse aggregate, intensive treatment is carried out to it with cement-silica flour slurries, poly-vinyl alcohol solution, improves regeneration
The basic performance of coarse aggregate, the mechanical property and intensity of regeneration concrete can be improved, improve the interface of regenerated coarse aggregate-Behavior of Hardened Cement Paste
Transition region pattern；Graphene oxide is mixed in regeneration concrete, hydrated reaction of cement can be promoted, hence it is evident that improves concrete mechanicses
Performance and endurance quality, mortar strength is improved, after mixing graphene oxide, cement base interior porosity declines, hydrated cementitious production
Thing is more closely knit, and buildup effects become apparent from；Cotton stalk warp is tentatively rolled, dipping pretreatment, powder is carried out in saturated dry surface
It is broken, it is then scattered in the shearing of cutter high speed, producing fibre from cotton stalk is made, mixes in compound, has excellent high temperature steady
Qualitative, low-temperature cracking-resistance；Surface coating modification is carried out to expanded and vitrified small ball with thermosetting phenolic resin, improves a pressure
Degree, water absorption rate is reduced, bulk density increase, mixes in concrete, the impact strength and compressive strength of concrete can be improved.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment
A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide, it is characterised in that according to the following steps
Carry out：
（1）Regenerated coarse aggregate strenuous primary treatment：
20kg regenerated coarse aggregates are added into soaking flushing in running water, is stirred continuously, cleans up, then soak 15min, drag for
Go out, natural air drying to moisture content is 2-3% surface dry condition；
Under stirring, 7kg cement, 8kg silica flours are added into water, fully mixes well into slurries；Pour into above-mentioned gained regenerated coarse aggregate,
Interval stirring, when slurries reach pre-hardening state, after adding poly-vinyl alcohol solution immersion 2d, pull out, drain, ventilation disposed within
Shady place constantly stirs natural air drying；
（2）The preparation of cotton stalk fibre：
4kg cotton stalks are first carried out to roll processing, places into and 3d is fully soaked in clear water, taking-up drains, and cuts into 8-10mm
Broken section, dry to water content be 65-70% dry face state, then feeding enter pulverizing chamber carry out high speed shear break up 10min,
Air-dry and obtain stalk fibre；
（3）The surface coating modification of expanded and vitrified small ball：
9kg expanded and vitrified small balls are crossed into 40-60 mesh sieves, 1.5h is dried at 105-110 DEG C, it is molten with modifying agent phenolic resin ethanol
Liquid mixes, and modifying agent is coated uniformly on the surface of expanded and vitrified small ball, then solidifies 32min at 160-162 DEG C, obtain
To modified expanded glass bead；
（4）Recycled high performance concrete：
44kg cement, 13kg fine mineral admixtures flyash, 90kg natural coarse aggregate rubbles are uniformly mixed so as to obtain binder materials；
By binder materials and part water input stirrer for mixing, water-cement ratio 0.2-0.25,70s is stirred, add gained in (1)
Regenerated coarse aggregate and 16kg fine aggregate natural sands, 95s is stirred, add resulting material and 0.05kg graphene oxides in (2), (3)
Solution, 0.6kg high-efficiency water-reducing agent of poly-carboxylic acid and remaining water, water-cement ratio 0.35-0.4,100s is stirred, obtains the concrete.
Wherein, step（1）Middle regenerated coarse aggregate is broken for discarded concrete test block, particle diameter 5-20mm, water-cement ratio
For 0.9, poly-vinyl alcohol solution concentration is 10%.
Step（2）Middle shearing rotating speed is 20000rpm.
Step（3）Middle modifying agent phenolic resin ethanol solution is dilute to the medium volume addition absolute ethyl alcohol of 14kg phenolic resin
Release.
Step（4）Middle cement is 42.5 grades of Portland cements, ballast grain sizes 10-20mm, graphene oxide solution
Mass fraction is 1.5%.
Claims (6)
- A kind of 1. preparation method for the recycled high performance concrete for adulterating graphene oxide, it is characterised in that：Xiang Shuizhong adds water Mud, silica flour, fully mix well into slurries, pour into regenerated coarse aggregate, interval stirring, when slurries reach pre-hardening state, add poly- After glycohol solution immersion, pull out, drain, ventilating and cooling place natural air drying disposed within, the pretreatment that strengthened regenerates thick bone Material；It is put into clear water after cotton stalk is rolled and fully soaks, taking-up drains, and cuts into broken section, dries to dry face state, feeding Enter pulverizing chamber high speed shear to break up, air-dry and obtain stalk fibre；Expanded and vitrified small ball and modifying agent are mixed evenly, solidified Obtain modified expanded glass bead；By binder materials and the input stirrer for mixing stirring of part water, intensive treatment regeneration is added The hot fine aggregate stirring of coarse aggregate and day, add stalk fibre, modified expanded glass bead and graphene oxide solution, water reducer and Remaining water, stirring obtain the concrete.
- 2. a kind of preparation method for the recycled high performance concrete for adulterating graphene oxide, it is characterised in that enter according to the following steps OK：（1）Regenerated coarse aggregate strenuous primary treatment：20-30 parts by weight regenerated coarse aggregate is added into soaking flushing in running water, is stirred continuously, cleans up, then soak 10- 15min, pull out, natural air drying to moisture content is 2-3% surface dry condition；Under stirring, 7-9 parts by weight of cement, 8-10 parts by weight of silicon powder are added into water, fully mixes well into slurries；Pour into above-mentioned gained In regenerated coarse aggregate, interval stirring, when slurries reach pre-hardening state, after adding poly-vinyl alcohol solution immersion 1-2d, pull out, drip Dry, natural air drying is constantly stirred in ventilating and cooling place disposed within；（2）The preparation of cotton stalk fibre：3-4 parts by weight cotton stalk is first carried out to roll processing, places into and 3-4d is fully soaked in clear water, taking-up drains, and shears Into broken section of 8-10mm, the dry face state for 65-70% is dried to water content, and then feeding enters pulverizing chamber progress high speed shear and beaten 6-10min is dissipated, air-dries and obtains stalk fibre；（3）The surface coating modification of expanded and vitrified small ball：9-11 parts by weight expanded and vitrified small balls are crossed into 40-60 mesh sieves, 1-2h are dried at 105-110 DEG C, with modifying agent phenolic aldehyde tree Fat ethanol solution mixes, and modifying agent is coated uniformly on the surface of expanded and vitrified small ball, then solidifies at 160-162 DEG C 30-34min, obtain modified expanded glass bead；（4）Recycled high performance concrete：By 44-46 parts by weight of cement, 13-18 parts by weight fine mineral admixtures flyash, 90-100 parts by weight natural coarse aggregate rubbles It is uniformly mixed so as to obtain binder materials；By binder materials and part water input stirrer for mixing, water-cement ratio 0.2-0.25,60-70s is stirred, added in (1) Gained regenerated coarse aggregate and 16-20 parts by weight fine aggregate natural sands, stir 90-100s, add (2), in (3) resulting material and 0.05-0.07 parts by weight graphene oxide solution, 0.6-0.7 parts by weight high-efficiency water-reducing agent of poly-carboxylic acid and remaining water, water-cement ratio are 0.35-0.4,90-100s is stirred, obtains the concrete.
- 3. a kind of preparation method of recycled high performance concrete for adulterating graphene oxide according to claim 2, it is special Sign is, step（1）Middle regenerated coarse aggregate is broken for discarded concrete test block, particle diameter 5-20mm, water-cement ratio 0.9- 1, poly-vinyl alcohol solution concentration is 10-12%.
- 4. a kind of preparation method of recycled high performance concrete for adulterating graphene oxide according to claim 2, it is special Sign is, step（2）Middle shearing rotating speed is 20000-22000rpm.
- 5. a kind of preparation method of recycled high performance concrete for adulterating graphene oxide according to claim 2, it is special Sign is, step（3）Middle modifying agent phenolic resin ethanol solution is anhydrous to the medium volume addition of 14-16 parts by weight of phenolic resin Ethanol dilutes.
- 6. a kind of preparation method of recycled high performance concrete for adulterating graphene oxide according to claim 2, it is special Sign is, step（4）Middle cement is 42.5 grades of Portland cements, ballast grain sizes 10-20mm, graphene oxide solution matter Amount fraction is 1-2%.
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Cited By (8)
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|---|---|---|---|---|
| CN111470816A (en) * | 2020-03-09 | 2020-07-31 | 山东省产品质量检验研究院 | Curb for road and preparation method thereof |
| CN111732379A (en) * | 2020-07-09 | 2020-10-02 | 范凯 | High-strength corrosion-resistant concrete material and preparation method thereof |
| CN111943544A (en) * | 2020-07-29 | 2020-11-17 | 广东省水利水电科学研究院 | Plastic concrete and preparation method thereof |
| CN112279578A (en) * | 2020-11-26 | 2021-01-29 | 杭州易佰新材料科技有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
| CN112521038A (en) * | 2020-11-10 | 2021-03-19 | 河海大学 | Modification and application of concrete recycled aggregate |
| CN112521091A (en) * | 2020-12-07 | 2021-03-19 | 桂林理工大学 | Modified graphene modified cement-based composite material and preparation method thereof |
| CN114477873A (en) * | 2022-02-23 | 2022-05-13 | 深圳市宝金华混凝土有限公司 | Recycled aggregate self-compacting concrete and preparation method thereof |
| CN116444236A (en) * | 2023-06-12 | 2023-07-18 | 济南天荣祥混凝土有限公司 | High-strength high-permeability recycled aggregate concrete material and preparation process thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470816A (en) * | 2020-03-09 | 2020-07-31 | 山东省产品质量检验研究院 | Curb for road and preparation method thereof |
| CN111732379A (en) * | 2020-07-09 | 2020-10-02 | 范凯 | High-strength corrosion-resistant concrete material and preparation method thereof |
| CN111943544A (en) * | 2020-07-29 | 2020-11-17 | 广东省水利水电科学研究院 | Plastic concrete and preparation method thereof |
| CN112521038B (en) * | 2020-11-10 | 2022-04-08 | 河海大学 | Modification and application of concrete recycled aggregate |
| CN112521038A (en) * | 2020-11-10 | 2021-03-19 | 河海大学 | Modification and application of concrete recycled aggregate |
| CN112279578A (en) * | 2020-11-26 | 2021-01-29 | 杭州易佰新材料科技有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
| CN112279578B (en) * | 2020-11-26 | 2022-04-22 | 上海隧港建筑材料有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
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| CN112521091A (en) * | 2020-12-07 | 2021-03-19 | 桂林理工大学 | Modified graphene modified cement-based composite material and preparation method thereof |
| CN114477873A (en) * | 2022-02-23 | 2022-05-13 | 深圳市宝金华混凝土有限公司 | Recycled aggregate self-compacting concrete and preparation method thereof |
| CN114477873B (en) * | 2022-02-23 | 2022-08-23 | 深圳市宝金华混凝土有限公司 | Recycled aggregate self-compacting concrete and preparation method thereof |
| CN116444236A (en) * | 2023-06-12 | 2023-07-18 | 济南天荣祥混凝土有限公司 | High-strength high-permeability recycled aggregate concrete material and preparation process thereof |
| CN116444236B (en) * | 2023-06-12 | 2023-08-15 | 济南天荣祥混凝土有限公司 | High-strength high-permeability recycled aggregate concrete material and preparation process thereof |
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Application publication date: 20180323 |