CN109354464A - A kind of modification regeneration concrete and preparation method thereof - Google Patents
A kind of modification regeneration concrete and preparation method thereof Download PDFInfo
- Publication number
- CN109354464A CN109354464A CN201811500540.0A CN201811500540A CN109354464A CN 109354464 A CN109354464 A CN 109354464A CN 201811500540 A CN201811500540 A CN 201811500540A CN 109354464 A CN109354464 A CN 109354464A
- Authority
- CN
- China
- Prior art keywords
- modification
- aggregate
- rubber grain
- regeneration concrete
- modification regeneration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- 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
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of modification regeneration concrete and preparation method thereof, are related to building material technical field.Be characterized in that: the ingredient and weight ratio of the raw material of modification regeneration concrete are as follows: water 190-220kg/m3；Ordinary portland cement 440-460kg/m3；Natural river sand 350-400kg/m3；Polycarboxylate water-reducer 15-20kg/m3；Natural rubble 600-620kg/m3；Modification regeneration aggregate 600-650kg/m3；Alkali modification rubber grain 10-30kg/m3.The present invention has the advantages that improve mechanical performance of concrete and anti-freezing property.
Description
Technical field
The present invention relates to building material technical fields, more specifically, it relates to a kind of modification regeneration concrete and its system
Preparation Method.
Background technique
As construction industry development is rapid, urbanization step is getting faster, while reconstruction of the old city town project is more and more, and thus
Produce largely discarded building waste.It is not all carried out at recycling by way of science in China's major part building castoff
Reason.Most building castoffs are disposed as rubbish, are arbitrarily piled up in outdoor countryside, or take simple landfill side
Formula is handled.
A kind of regeneration concrete is disclosed in the Chinese invention patent of Publication No. CN106186945A, by including water
The raw material preparation of mud, water, fine aggregate, regenerated coarse aggregate, silicon powder, steel fibre, rubber grain, water-reducing agent, the regenerated coarse aggregate,
The mass ratio of steel fibre and rubber grain is (2.80~3.00): (0.20~0.25): (0.05~0.20).
For regenerated coarse aggregate in above-mentioned patent compared with natural aggregate, regenerated coarse aggregate is coated with the cement hardened
Slurry, therefore new and old cement mortar total content is high compared with normal concrete in regeneration concrete, therefore its porosity is higher than natural concrete,
Untreated regenerated coarse aggregate will affect the mechanical property and endurance quality of concrete.Rubber grain is to the resistance to of regeneration concrete
Long property generates advantageous effect, but can influence the intensity of regeneration concrete indirectly.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of modification regeneration concrete, tool
The advantages of being improved mechanical performance of concrete.
The purpose of the present invention two is to provide a kind of preparation method of modification regeneration concrete have and improve concrete power
The advantages of learning performance.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of modification regeneration concrete, the ingredient and weight ratio of raw material are as follows:
Water 190-220kg/m3；
Ordinary portland cement 440-460kg/m3；
Natural river sand 350-400kg/m3；
Polycarboxylate water-reducer 15-20kg/m3；
Natural rubble 600-620kg/m3；
Modification regeneration aggregate 600-650kg/m3；
Alkali modification rubber grain 10-30kg/m3。
By using above-mentioned technical proposal, since additive zinc stearate, stearic acid can be added in rubber in process of production
Zinc is a kind of white fine-powder, has soapy feeling, and not soluble in water, and zinc stearate is enriched in rubber particle surface, can reduce rubber
The bonding force of glue particle and cement mortar.And after alkali modification processing, alkali occurs chemical reaction with zinc stearate and makes it dissolve, and improves
The degree of roughness of rubber particle surface improves the bonding force with cement matrix, to improve the mechanical property of modification regeneration concrete
Energy.
Further preferably, the alkali modification rubber grain the preparation method comprises the following steps:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 6-10% and submerge rubber grain, stirring is mixed
It closes uniformly, is heated to 30-50 DEG C, constant temperature 10-15min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
By using above-mentioned technical proposal, aqueous slkali is selected from sodium hydroxide or potassium hydroxide, stearic under heating conditions
Sour zinc be easier from rubber grain internal migration to its surface, aqueous slkali under heating conditions with the tristearin of rubber particle surface
Sour zinc occurs chemical reaction and makes it dissolve, and further increases the degree of roughness of rubber particle surface, improves viscous with cement matrix
Relay.
Further preferably, the rubber grain carries out sided corona treatment before container is added, and corona intensity is 4.0kV/cm
~4.2kV/cm.
By using above-mentioned technical proposal, rubber grain passes through sided corona treatment, and the zinc stearate inside rubber grain can move
Its surface is moved to, is conducive to aqueous slkali and reacts with it.
Further preferably, the partial size of the rubber grain is 1-3mm.
By using above-mentioned technical proposal, the partial size of rubber grain is too big, can reduce the pressure resistance of modification regeneration concrete
Degree, the partial size of rubber grain are too small, it is difficult to carry biggish load.
Further preferably, the modification regeneration aggregate processing method are as follows:
(1) by discarded concrete disintegrating at the aggregate of 5-25mm, then broken aggregate is washed with water, natural air drying obtains
To dry aggregate；
(2) bleeding agent, nano-titanium dioxide and water are uniformly mixed and form modification liquid, dry aggregate is put into modification liquid, stirring
It is uniformly mixed, obtains suspension；
(3) suspension is put into closed container, carbon dioxide gas is passed through into suspension, filtered, after aggregate is air-dried
To modification regeneration aggregate.
By using above-mentioned technical proposal, the dust for being adhered to aggregate surface, nanometer titanium dioxide can be removed by cleaning aggregate
Titanium is to make it more in order to which larger hole and crack existing for filler aggregate, bleeding agent increase the permeability of nano-titanium dioxide
The hole being easily accessible inside aggregate and crack enhance the structural strength of aggregate, when carbon dioxide gas is passed through suspension, one
Point carbon dioxide solubility in water after, generate calcium carbonate with the hydrated product calcium hydroxide reaction in aggregate, calcium carbonate can change
The contact interface of kind aggregate and cement slurry, enhances the intensity of concrete, reduces recycled aggregate porosity, enhances regeneration concrete
Mechanical performance.
Further preferably, the parts by weight of the bleeding agent in the step (2), nano-titanium dioxide and water are respectively
10-15 parts, 1-3 parts, 80-90 parts.
By using above-mentioned technical proposal, under said ratio, nano-titanium dioxide can be uniformly dispersed, and be easily accessible
Hole and crack inside dry aggregate.
Further preferably, the volume ratio of the dry aggregate in the step (2) and modification liquid is (20-30): 100.
By using above-mentioned technical proposal, the volume of dry aggregate is too small, and the nano-titanium dioxide in modification liquid cannot be abundant
It utilizes, the volume of dry aggregate is too big, is unfavorable for nano-titanium dioxide and dry aggregate comes into full contact with, therefore, dry aggregate and modification liquid
Volume ratio be (20-30): 100.
Further preferably, the bleeding agent in the step (2) is selected from octyl phenol polyoxyethylene ether, Nonyl pheno
Any one in ether, fatty alcohol polyoxyethylene ether.
By using above-mentioned technical proposal, above-mentioned bleeding agent belongs to nonionic surfactant, and the ehter bond in molecule is not easy
It is destroyed by acid, alkali, so high stability, water-soluble preferable, electrolyte-resistant is readily biodegradable, and foam is small, is suitable for this hair
Bright dry aggregate modification.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation method of modification regeneration concrete, comprising the following steps:
Natural river sand, natural rubble, modification regeneration aggregate are uniformly mixed, obtain the first mixture by step 1；
Water, ordinary portland cement, polycarboxylate water-reducer are uniformly mixed by step 2, obtain the second mixture；
First mixture is added in the second mixture, adds alkali modification rubber grain by step 3, is uniformly mixed, is changed
Property regeneration concrete.
By using above-mentioned technical proposal, after being modified to recycled aggregate, reduce recycled aggregate porosity, cooperation alkali changes
Property rubber grain, enhance the compatibility of modification regeneration aggregate and alkali modification rubber grain, it is synergistic, enhance regeneration concrete
Mechanical performance.Discarded concrete is recycled, it is environmentally protective.
In conclusion compared with prior art, the invention has the following advantages:
(1) by carrying out sided corona treatment to rubber grain, the zinc stearate inside rubber grain can be migrated to its surface the present invention,
Alkali modification processing is carried out again, and the zinc stearate generation chemical reaction of alkali and rubber particle surface makes it dissolve, and improves rubber grain
The degree of roughness on surface improves the bonding force with cement matrix, to improve the mechanical property of modification regeneration concrete；
(2) present invention can remove the dust for being adhered to aggregate surface by cleaning aggregate, and nano-titanium dioxide is to fill
Larger hole and crack existing for aggregate, bleeding agent increase the permeability of nano-titanium dioxide, make it easier to enter aggregate
Internal hole and crack, enhances the structural strength of aggregate, when carbon dioxide gas is passed through suspension, a part of carbon dioxide is molten
Solution in water after, generate calcium carbonate with the hydrated product calcium hydroxide reaction in aggregate, calcium carbonate can improve aggregate and cement
The contact interface of slurry enhances the mechanical performance of modification regeneration concrete；
(3) present invention can recycle discarded concrete, reduce pollution, environmentally protective.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1: a kind of modification regeneration concrete, the ingredient and weight ratio of raw material are as follows:
Water 190kg/m3；
Ordinary portland cement 440kg/m3；
Natural river sand 350kg/m3；
Polycarboxylate water-reducer 15kg/m3；
Natural rubble 620kg/m3；
Modification regeneration aggregate 600kg/m3；
Alkali modification rubber grain 10kg/m3。
The grain graininess of natural river sand is less than 5mm, and the partial size of natural rubble is 5-20mm, clay content 0.45%, crushing
Index is 9%.
Alkali modification rubber grain the preparation method comprises the following steps:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 6% and submerge rubber grain, is stirred
Uniformly, 30 DEG C are heated to, constant temperature 15min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
Wherein, aqueous slkali is sodium hydroxide solution, and the partial size of rubber grain is 1mm, and rubber grain mainly passes through various
Waste old includes that scrap rubber, sneakers bottom, leftover pieces, cable skin, rubber leftover pieces, car mat band, automobile tire etc. are waste and old
Rubber raw materials processing.
Modification regeneration aggregate processing method are as follows:
(1) by discarded concrete disintegrating at the aggregate of 5-25mm, then broken aggregate is washed with water, natural air drying obtains
To dry aggregate, the moisture content of dry aggregate is 2.5%；
(2) bleeding agent, nano-titanium dioxide and water are uniformly mixed and form modification liquid, bleeding agent, nano-titanium dioxide and water
Parts by weight are respectively 10 parts, 1 part, 90 parts, and bleeding agent is octyl phenol polyoxyethylene ether, and dry aggregate is put into modification liquid, are done
The volume ratio of aggregate and modification liquid is 20:100, is uniformly mixed, obtains suspension；
(3) suspension is put into closed container, carbon dioxide gas is passed through into suspension, the flow of carbon dioxide gas is
5L/min, filtering obtain modification regeneration aggregate after air-drying aggregate.
A kind of preparation method of modification regeneration concrete, comprising the following steps:
Step 1 natural river sand, natural rubble, modification regeneration aggregate is mixed evenly, mixing time 10min, and stirring turns
Fast 500rpm obtains the first mixture；
Water, ordinary portland cement, polycarboxylate water-reducer are uniformly mixed by step 2, mixing time 10min, speed of agitator
800rpm obtains the second mixture；
First mixture is added in the second mixture, adds alkali modification rubber grain, be mixed evenly, stir by step 3
Time 10min is mixed, speed of agitator 500rpm obtains modification regeneration concrete.
Embodiment 2: a kind of modification regeneration concrete, difference from example 1 is that, the ingredient and weight of raw material
Than as follows:
Water 195kg/m3；
Ordinary portland cement 445kg/m3；
Natural river sand 360kg/m3；
Polycarboxylate water-reducer 16kg/m3；
Natural rubble 615kg/m3；
Modification regeneration aggregate 610kg/m3；
Alkali modification rubber grain 15kg/m3。
Embodiment 3: a kind of modification regeneration concrete, difference from example 1 is that, the ingredient and weight of raw material
Than as follows:
Water 200kg/m3；
Ordinary portland cement 450kg/m3；
Natural river sand 370kg/m3；
Polycarboxylate water-reducer 17kg/m3；
Natural rubble 610kg/m3；
Modification regeneration aggregate 615kg/m3；
Alkali modification rubber grain 20kg/m3。
Embodiment 4: a kind of modification regeneration concrete, difference from example 1 is that, the ingredient and weight of raw material
Than as follows:
Water 210kg/m3；
Ordinary portland cement 455kg/m3；
Natural river sand 390kg/m3；
Polycarboxylate water-reducer 19kg/m3；
Natural rubble 605kg/m3；
Modification regeneration aggregate 640kg/m3；
Alkali modification rubber grain 25kg/m3。
Embodiment 5: a kind of modification regeneration concrete, difference from example 1 is that, the ingredient and weight of raw material
Than as follows:
Water 220kg/m3；
Ordinary portland cement 460kg/m3；
Natural river sand 400kg/m3；
Polycarboxylate water-reducer 20kg/m3；
Natural rubble 600kg/m3；
Modification regeneration aggregate 650kg/m3；
Alkali modification rubber grain 30kg/m3。
Embodiment 6: a kind of modification regeneration concrete, difference from example 1 is that, the system of alkali modification rubber grain
Preparation Method are as follows:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 8% and submerge rubber grain, is stirred
Uniformly, 40 DEG C are heated to, constant temperature 12min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
Embodiment 7: a kind of modification regeneration concrete, difference from example 1 is that, the system of alkali modification rubber grain
Preparation Method are as follows:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 10% and submerge rubber grain, is stirred
Uniformly, 50 DEG C are heated to, constant temperature 10min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
Embodiment 8: a kind of modification regeneration concrete, difference from example 1 is that, the preparation of modified rubber particle
Method are as follows: (1) rubber grain is subjected to sided corona treatment, corona treatment equipment is Schumann corona machine, and corona intensity is 4.0kV/cm,
Rubber grain is added to the container again, the aqueous slkali that mass concentration is 6% is added and submerges rubber grain, be uniformly mixed,
30 DEG C are heated to, constant temperature 15min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
Embodiment 9: a kind of modification regeneration concrete, the difference is that, corona intensity is 4.1kV/ with embodiment 8
cm。
Embodiment 10: a kind of modification regeneration concrete, the difference is that, corona intensity is 4.2kV/ with embodiment 8
cm。
Embodiment 11: a kind of modification regeneration concrete, difference from example 1 is that, the partial size of rubber grain is
2mm, aqueous slkali are potassium hydroxide solution.
Embodiment 12: a kind of modification regeneration concrete, difference from example 1 is that, the partial size of rubber grain is
3mm。
Embodiment 13: a kind of modification regeneration concrete, difference from example 1 is that, bleeding agent, nanometer titanium dioxide
The parts by weight of titanium and water are respectively 13 parts, 2 parts, 87 parts.
Embodiment 14: a kind of modification regeneration concrete, difference from example 1 is that, bleeding agent, nanometer titanium dioxide
The parts by weight of titanium and water are respectively 15 parts, 3 parts, 80 parts.
Embodiment 15: a kind of modification regeneration concrete, difference from example 1 is that, bleeding agent is that nonyl phenol is poly-
Ethylene oxide ether.
Embodiment 16: a kind of modification regeneration concrete, difference from example 1 is that, bleeding agent is poly alkyl alcohol
Ethylene oxide ether.
Comparative example 1: a kind of modification regeneration concrete, difference from example 1 is that, raw material includes following weight
The component of number:
Water 190kg/m3；
Ordinary portland cement 440kg/m3；
Natural river sand 350kg/m3；
Polycarboxylate water-reducer 15kg/m3；
Natural rubble 620kg/m3；
Modification regeneration aggregate 600kg/m3；
Rubber grain 10kg/m3；
Rubber grain refers to the General Purpose Rubber particle without modification.
Comparative example 2: a kind of modification regeneration concrete, difference from example 1 is that, raw material includes following weight
The component of number:
Water 190kg/m3；
Ordinary portland cement 440kg/m3；
Natural river sand 350kg/m3；
Polycarboxylate water-reducer 15kg/m3；
Natural rubble 620kg/m3；
Common recycled aggregate 600kg/m3；
Alkali modification rubber grain 10kg/m3。
Common recycled aggregate refers to the aggregate by discarded concrete disintegrating at 5-25mm.
Comparative example 3: a kind of modification regeneration concrete, difference from example 1 is that, raw material includes following weight
The component of number:
Water 190kg/m3；
Ordinary portland cement 440kg/m3；
Natural river sand 350kg/m3；
Polycarboxylate water-reducer 15kg/m3；
Natural rubble 620kg/m3；
Common recycled aggregate 600kg/m3；
Rubber grain 10kg/m3。
Common recycled aggregate refer to will be discarded concrete disintegrating at the aggregate of 5-25mm, rubber grain refers to without changing
Property processing General Purpose Rubber particle.
Comparative example 4: a kind of modification regeneration concrete, difference from example 1 is that, the system of alkali modification rubber grain
Preparation Method are as follows:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 2% and submerge rubber grain, is stirred
Uniformly, 15min is impregnated；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
Comparative example 5: a kind of modification regeneration concrete, difference from example 1 is that, the partial size of rubber grain is
6mm。
Comparative example 6: using the preparation regeneration coagulation of embodiment 1 in the Chinese invention patent of Publication No. CN106186945A
Soil.
Performance test
Test specimen: using the regeneration concrete obtained in embodiment 1-16 as test specimen 1-16, using in comparative example 1-6
The regeneration concrete of acquisition is as control sample 1-6.
Test method: according to the requirement of specification " mechanical test method standard on common coagulation ", test specimen 1-
16 and control sample 1-6 is added to steel die trial, and brings up to shake table and vibrate, and the 30s that vibrates is until concrete surface bleeding
?.It places at room temperature and carries out demoulding afterwards for 24 hours, then concrete sample is put into standard curing box, setting maintenance box temperature
Degree is 20 DEG C, humidity 98%.Test specimen is taken out after maintenance 28d to be tested, and the mechanical property and anti-freezing property of concrete are measured.
Test result and analysis: the test result of test specimen 1-16 and control sample 1-6 are as shown in table 3.It can by table 1
Know, after modified rubber particle and modification regeneration aggregate is added in modification regeneration concrete, compression strength and tensile splitting strength
Have and significantly promoted, and relative dynamic elastic modulus is also increase accordingly after 300 Frozen-thawed cycleds, compared with single addition modified rubber
The amplitude that particle or modification regeneration aggregate increase is bigger, illustrates that modification regeneration aggregate cooperates alkali modification rubber grain, synergistic,
Enhance the mechanical performance and anti-freezing property of regeneration concrete.After rubber grain carries out sided corona treatment and alkali modification simultaneously, it is modified again
The mechanical property value added of growing concrete is maximum.
The test result of table 1 test specimen 1-16 and control sample 1-6
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of modification regeneration concrete, which is characterized in that the ingredient and weight ratio of its raw material are as follows:
Water 190-220kg/m3；
Ordinary portland cement 440-460kg/m3；
Natural river sand 350-400kg/m3；
Polycarboxylate water-reducer 15-20kg/m3；
Natural rubble 600-620kg/m3；
Modification regeneration aggregate 600-650kg/m3；
Alkali modification rubber grain 10-30kg/m3。
2. modification regeneration concrete according to claim 1, which is characterized in that the preparation side of the alkali modification rubber grain
Method are as follows:
(1) rubber grain is added to the container, adds the aqueous slkali that mass concentration is 6-10% and submerge rubber grain, stirring is mixed
It closes uniformly, is heated to 30-50 DEG C, constant temperature 10-15min；
(2) rubber grain is taken out, after being cleaned with clear water, dries, obtains alkali modification rubber grain.
3. modification regeneration concrete according to claim 2, which is characterized in that container advance is being added in the rubber grain
Row sided corona treatment, corona intensity are 4.0kV/cm ~ 4.2kV/cm.
4. modification regeneration concrete according to claim 2, which is characterized in that the partial size of the rubber grain is 1-3mm.
5. modification regeneration concrete according to claim 1, which is characterized in that the modification regeneration aggregate processing method
Are as follows:
(1) by discarded concrete disintegrating at the aggregate of 5-25mm, then broken aggregate is washed with water, natural air drying obtains
To dry aggregate；
(2) bleeding agent, nano-titanium dioxide and water are uniformly mixed and form modification liquid, dry aggregate is put into modification liquid, stirring
It is uniformly mixed, obtains suspension；
(3) suspension is put into closed container, carbon dioxide gas is passed through into suspension, filtered, after aggregate is air-dried
To modification regeneration aggregate.
6. modification regeneration concrete according to claim 5, which is characterized in that bleeding agent, nanometer in the step (2)
The parts by weight of titanium dioxide and water are respectively 10-15 parts, 1-3 parts, 80-90 parts.
7. modification regeneration concrete according to claim 5, which is characterized in that dry aggregate in the step (2) with change
Property liquid volume ratio be (20-30): 100.
8. modification regeneration concrete according to claim 5, which is characterized in that the bleeding agent in the step (2) is selected from
Octyl phenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, any one in fatty alcohol polyoxyethylene ether.
9. a kind of preparation method of modification regeneration concrete, which comprises the following steps:
Natural river sand, natural rubble, modification regeneration aggregate are uniformly mixed, obtain the first mixture by step 1；
Water, ordinary portland cement, polycarboxylate water-reducer are uniformly mixed by step 2, obtain the second mixture；
First mixture is added in the second mixture, adds alkali modification rubber grain by step 3, is uniformly mixed, is changed
Property regeneration concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500540.0A CN109354464B (en) | 2018-12-08 | 2018-12-08 | Modified recycled concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500540.0A CN109354464B (en) | 2018-12-08 | 2018-12-08 | Modified recycled concrete and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109354464A true CN109354464A (en) | 2019-02-19 |
| CN109354464B CN109354464B (en) | 2021-02-26 |
Family
ID=65331899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811500540.0A Active CN109354464B (en) | 2018-12-08 | 2018-12-08 | Modified recycled concrete and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109354464B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942255A (en) * | 2019-04-13 | 2019-06-28 | 北京国旺混凝土有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN110590284A (en) * | 2019-09-27 | 2019-12-20 | 同济大学 | Damping modified recycled concrete slab and preparation method thereof |
| CN110981327A (en) * | 2019-10-08 | 2020-04-10 | 徐思钰 | Modified rubber particle anti-abrasion ultra-high-toughness concrete and preparation method thereof |
| CN112694302A (en) * | 2021-02-06 | 2021-04-23 | 河北宏京新型建材有限公司 | Glass fiber concrete and preparation process thereof |
| CN112746608A (en) * | 2021-01-05 | 2021-05-04 | 陕西隆岳地基基础工程有限公司 | Underground continuous wall construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090097575A (en) * | 2008-03-12 | 2009-09-16 | 충주대학교 산학협력단 | Ready-mixed concrete with recycle coarse aggregate and its manufacturing method |
| CN102786243A (en) * | 2012-07-27 | 2012-11-21 | 深圳大学 | Modified recycled aggregate and recycled aggregate high-performance concrete |
| CN103290753A (en) * | 2013-05-28 | 2013-09-11 | 深圳海龙建筑制品有限公司 | Nano-composite environment-friendly water permeable brick and production method thereof |
| CN103641417A (en) * | 2013-12-18 | 2014-03-19 | 中铁二十局集团第四工程有限公司 | Semi-rigid concrete and preparation process thereof |
| CN108484022A (en) * | 2018-04-25 | 2018-09-04 | 扬州市职业大学 | A kind of fiber reinforcement regeneration concrete and preparation method thereof |
-
2018
- 2018-12-08 CN CN201811500540.0A patent/CN109354464B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090097575A (en) * | 2008-03-12 | 2009-09-16 | 충주대학교 산학협력단 | Ready-mixed concrete with recycle coarse aggregate and its manufacturing method |
| CN102786243A (en) * | 2012-07-27 | 2012-11-21 | 深圳大学 | Modified recycled aggregate and recycled aggregate high-performance concrete |
| CN103290753A (en) * | 2013-05-28 | 2013-09-11 | 深圳海龙建筑制品有限公司 | Nano-composite environment-friendly water permeable brick and production method thereof |
| CN103641417A (en) * | 2013-12-18 | 2014-03-19 | 中铁二十局集团第四工程有限公司 | Semi-rigid concrete and preparation process thereof |
| CN108484022A (en) * | 2018-04-25 | 2018-09-04 | 扬州市职业大学 | A kind of fiber reinforcement regeneration concrete and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942255A (en) * | 2019-04-13 | 2019-06-28 | 北京国旺混凝土有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN110590284A (en) * | 2019-09-27 | 2019-12-20 | 同济大学 | Damping modified recycled concrete slab and preparation method thereof |
| CN110981327A (en) * | 2019-10-08 | 2020-04-10 | 徐思钰 | Modified rubber particle anti-abrasion ultra-high-toughness concrete and preparation method thereof |
| CN112746608A (en) * | 2021-01-05 | 2021-05-04 | 陕西隆岳地基基础工程有限公司 | Underground continuous wall construction method |
| CN112694302A (en) * | 2021-02-06 | 2021-04-23 | 河北宏京新型建材有限公司 | Glass fiber concrete and preparation process thereof |
| CN112694302B (en) * | 2021-02-06 | 2022-08-05 | 河北宏京新型建材有限公司 | Glass fiber concrete and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109354464B (en) | 2021-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109354464A (en) | A kind of modification regeneration concrete and preparation method thereof | |
| CN110526610B (en) | High-strength recycled concrete and preparation method thereof | |
| CN109456002B (en) | High-strength recycled concrete and preparation method thereof | |
| CN109456003B (en) | Anti-permeability recycled concrete and preparation method thereof | |
| CN107586053B (en) | A kind of concrete regenerating technique and concrete formulation | |
| CN106045412B (en) | A kind of eco-concrete | |
| CN106186945A (en) | A kind of regeneration concrete and preparation method thereof | |
| CN107814530A (en) | A kind of High Strength Regenerated Concrete porous brick | |
| CN110451877B (en) | Building waste concrete-brick mixed self-repairing concrete and preparation method thereof | |
| CN105884308A (en) | Waste concrete regeneration method | |
| CN113105170B (en) | 3D printing alkali-activated geopolymer composite material doped with kenaf bast fiber crop straw and preparation method thereof | |
| CN109516707A (en) | A kind of preparation method for the recycled aggregate inhibiting alkali-aggregate reaction | |
| CN108558324A (en) | A kind of impervious regeneration concrete | |
| CN111620584A (en) | Method for modifying recycled aggregate | |
| CN112759329A (en) | Recycled concrete and production process thereof | |
| CN109206037A (en) | The surface treatment method and cement base water-permeable brick surface layer of clay brick recycled fine aggregate | |
| CN110436857A (en) | Recycled aggregate pervious concrete formula and its production technology containing common brick | |
| CN110510947A (en) | The method that microwave curing prepares the low-quality mine spike recycled cement based articles of large dosage | |
| CN108821685A (en) | A kind of concrete road surface mending agent | |
| CN106045558A (en) | Aerated concrete block preparation method | |
| CN108751863B (en) | Cementing material based on saline soil and preparation method thereof | |
| CN107721287A (en) | A kind of diatomite modified concrete and preparation method thereof | |
| CN111377635B (en) | Concrete modified recycled aggregate, modification method thereof and application thereof in cement-based permeable material | |
| CN112159178A (en) | Concrete containing waste brick powder and fly ash | |
| CN106348663A (en) | Preparation technology of waste-rubber baking-free bricks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |