CN109503078A - A kind of preparation method of clear-water concrete - Google Patents
A kind of preparation method of clear-water concrete Download PDFInfo
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- CN109503078A CN109503078A CN201811555656.4A CN201811555656A CN109503078A CN 109503078 A CN109503078 A CN 109503078A CN 201811555656 A CN201811555656 A CN 201811555656A CN 109503078 A CN109503078 A CN 109503078A
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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
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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
- 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
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1077—Cements, e.g. waterglass
- C04B20/1085—Waterglass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation methods of clear-water concrete, belong to the technical field of concrete, its key points of the technical solution are that by weight, the raw material for preparing of clear-water concrete includes following components: 350-400 parts of cement, 20-60 parts of flyash, 60-80 parts of miberal powder, 500-600 parts of water sand, 200-300 parts of fine sand, 230-260 parts of regenerated coarse aggregate, 680-720 parts of rubble, 140-170 parts of water, 1.5-2.5 parts of water-reducing agent；Preparation method includes following steps: regenerated coarse aggregate impregnates 1-3h before mixing with other raw materials in modification liquid, by weight, modification liquid includes: 60-80 parts of the waterglass that mass concentration is 5%, 5-10 parts of silane coupling agent, 10-20 parts of organic siliconresin, 5-10 parts of kaolin, has achieved the effect that improve clear-water concrete compression strength.
Description
Technical field
The present invention relates to the technical field of clear-water concrete, in particular to a kind of preparation method of clear-water concrete.
Background technique
Clear-water concrete is directly using the natural texture after fair-faced concrete molding as the clear water coagulation of finishing effect
Soil no longer needs to carry out the surface treatment such as spraying, can not only show individual character, and be good for the environment, as people's personalization chases after
It asks and the enhancing of environmental consciousness, the occupation rate of market of clear-water concrete gradually expands.
In clear-water concrete, aggregate dosage ranks first, and is the maximum component of bulk specific gravity.Because aggregate application bring is natural
The random mining of sand and stone resources causes massif vegetation deterioration, river damage.It is thick using discarded concrete building waste as regeneration
Aggregate develops and applies, and on the one hand solves a large amount of discarded concrete processing difficulties and ecological environment resulting from increasingly
The problems such as deterioration；On the other hand consumption of the construction industry to rubble can be reduced, to reduce the exploitation to natural sand stone, solved broken
Stone is increasingly deficient and a large amount of Exploit sand and stones are to the destruction problem of ecological environment, protects the living environment of the mankind.
However, the rough surface of regenerated coarse aggregate, porosity is big relative to natural aggregate, it is applied to clear water coagulation
In soil, the compression strength of the clear-water concrete after solidification is low.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of preparation method of clear-water concrete, it is mixed to reach raising clear water
The effect of solidifying soil compression strength.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of preparation method of clear-water concrete:
By weight, the raw material for preparing of clear-water concrete includes following components: 350-400 parts of cement, flyash 20-60
Part, 60-80 parts of miberal powder, 500-600 parts of water sand, 200-300 parts of fine sand, 230-260 parts of regenerated coarse aggregate, 680-720 parts of rubble,
140-170 parts of water, 1.5-2.5 parts of water-reducing agent；
Preparation method includes following steps: regenerated coarse aggregate impregnates 1-3h before mixing with other raw materials in modification liquid, presses
Parts by weight meter, modification liquid include: 60-80 parts of the waterglass that mass concentration is 5%, 5-10 parts of silane coupling agent, organic siliconresin
10-20 parts, 5-10 parts of kaolin.
By using above scheme, firstly, since the hydro-thermalization of cement acts on, clear-water concrete is interior in process of setting
Portion can discharge a large amount of heat, cause inside clear-water concrete and the temperature difference of external environment is larger, so that clear-water concrete mix
Material is easy to appear the cracking phenomenas such as crackle in process of setting, the compression strength after thus reducing clear-water concrete solidification.And this
The preparation reasonable raw material proportioning of invention can substantially reduce the hydro-thermalization effect in clear-water concrete process of setting, thus reduce
Internal-external temperature difference in clear-water concrete process of setting, the compression strength after thus improving clear-water concrete solidification.
Secondly, regenerated coarse aggregate porosity usually with higher, makes it have stronger water absorption rate, it to be used for clear water coagulation
After in soil, water absorption is big, and the cohesiveness of the slurry in clear-water concrete is caused to be deteriorated, can not preferable package aggregate so that clearly
The compression strength of water coagulation soil is deteriorated.In the present invention, by the way that regenerated coarse aggregate to be soaked in modification liquid, to regenerated coarse aggregate
Hole is closed, and the porosity of regenerated coarse aggregate is reduced, to improve the compression strength of clear-water concrete.
To sum up, the present invention is obtained by preparing rational proportion between raw material and to the sealing of hole modification of regenerated coarse aggregate
Obtained the clear-water concrete with high compressive strength.
The present invention is further arranged to: including following components by weight: 375 parts of cement, 40 parts of flyash, mine
75 parts of powder, 550 parts of water sand, 250 parts of fine sand, 250 parts of regenerated coarse aggregate, 705 parts of rubble, 155 parts of water, 1.85 parts of water-reducing agent.
By using above scheme, above-mentioned analysis is pointed out, the proportion for preparing raw material of clear-water concrete is solidified for reducing
Hydro-thermalization effect in the process, improves being affected for the compression strength of clear-water concrete, and test proves, this kind proportion obtains
The compression strength of clear-water concrete is maximum, that is, it is the most reasonable to prepare raw material proportioning.
The present invention is further arranged to: by weight, modification liquid includes: 70 parts of the waterglass that mass concentration is 5%, silicon
8 parts of alkane coupling agent, 15 parts of organic siliconresin, 7 parts of kaolin.
By using above scheme, test is proved, is carried out sealing of hole to regenerated coarse aggregate using the modifying agent of this kind proportion and is changed
Property processing after, the compression strength of the clear-water concrete finally obtained is maximum, illustrates the modified effect of the modifying agent of this kind proportion most
Be it is obvious, match it is the most reasonable.
The present invention is further arranged to: the partial size of the regenerated coarse aggregate is 5-10mm.
The present invention is further arranged to: the partial size of the rubble is 5-25mm.
The present invention is further arranged to: the water-reducing agent is polycarboxylate water-reducer.
The present invention is further arranged to: the cement is P.O42.5.
The present invention is further arranged to: the miberal powder is S95 miberal powder.
In conclusion the invention has the following advantages:
1, preparation reasonable raw material proportioning of the invention can substantially reduce the hydro-thermalization effect in clear-water concrete process of setting,
Thus the internal-external temperature difference in clear-water concrete process of setting is reduced, the compression strength after thus improving clear-water concrete solidification；
2, in the present invention, by the way that regenerated coarse aggregate to be soaked in modification liquid, the hole of regenerated coarse aggregate is closed, is reduced
The porosity and water absorption rate of regenerated coarse aggregate improve the cohesiveness of the slurry in clear-water concrete, thus improve clear-water concrete
Compression strength.
Specific embodiment
Invention is further described in detail below.
For the partial size of the rubble used in following embodiment for 5-25mm, water-reducing agent is polycarboxylate water-reducer, and cement is
P.O42.5, miberal powder are S95 miberal powder, and the fineness modulus of water sand is 3.0, and the fineness modulus of fine sand is 2.0, the partial size of recycled aggregate
Range is 5-10mm, water absorption rate 11.4%, apparent density 2310kgm-3。
Embodiment 1
A kind of preparation method of clear-water concrete,
By weight, the raw material for preparing of clear-water concrete includes following components: 350 parts of cement, 20 parts of flyash, miberal powder 60
Part, 500 parts of water sand, 200 parts of fine sand, 230 parts of regenerated coarse aggregate, 680 parts of rubble, 140 parts of water, 1.5 parts of water-reducing agent；Preparation method
Include following steps: regenerated coarse aggregate impregnates 1h, by weight, modification liquid before mixing with other raw materials in modification liquid
It include: 60 parts of the waterglass that mass concentration is 5%, 5 parts of silane coupling agent, 10 parts of organic siliconresin, 5 parts of kaolin.
Embodiment 2
A kind of preparation method of clear-water concrete,
By weight, the raw material for preparing of clear-water concrete includes following components: 375 parts of cement, 40 parts of flyash, miberal powder 75
Part, 550 parts of water sand, 250 parts of fine sand, 250 parts of regenerated coarse aggregate, 705 parts of rubble, 155 parts of water, 1.85 parts of water-reducing agent；Preparation side
Method includes following steps: regenerated coarse aggregate impregnates 2h before mixing with other raw materials in modification liquid, by weight, modified
Liquid includes: 70 parts of the waterglass that mass concentration is 5%, 8 parts of silane coupling agent, 15 parts of organic siliconresin, 7 parts of kaolin.
Embodiment 3
A kind of preparation method of clear-water concrete,
By weight, the raw material for preparing of clear-water concrete includes following components: 400 parts of cement, 60 parts of flyash, miberal powder 80
Part, 600 parts of water sand, 300 parts of fine sand, 260 parts of regenerated coarse aggregate, 720 parts of rubble, 170 parts of water, 2.5 parts of water-reducing agent；Preparation method
Include following steps: regenerated coarse aggregate impregnates 3h, by weight, modification liquid before mixing with other raw materials in modification liquid
It include: 80 parts of the waterglass that mass concentration is 5%, 10 parts of silane coupling agent, 20 parts of organic siliconresin, 10 parts of kaolin.
Embodiment 4
A kind of preparation method of clear-water concrete is carried out according to the method for embodiment 2, the difference is that: by weight, clearly
The raw material for preparing of water coagulation soil includes following components: 350 parts of cement, 20 parts of flyash, 60 parts of miberal powder, 500 parts of water sand, fine sand
200 parts, 230 parts of regenerated coarse aggregate, 680 parts of rubble, 140 parts of water, 1.5 parts of water-reducing agent.
Embodiment 5
A kind of preparation method of clear-water concrete is carried out according to the method for embodiment 2, the difference is that: by weight, clearly
The raw material for preparing of water coagulation soil includes following components: 400 parts of cement, 60 parts of flyash, 80 parts of miberal powder, 600 parts of water sand, fine sand
300 parts, 260 parts of regenerated coarse aggregate, 720 parts of rubble, 170 parts of water, 2.5 parts of water-reducing agent.
Embodiment 6
A kind of preparation method of clear-water concrete is carried out according to the method for embodiment 2, the difference is that: regenerated coarse aggregate exists
1h is impregnated in modification liquid before mixing with other raw materials, by weight, modification liquid includes: the waterglass that mass concentration is 5%
60 parts, 5 parts of silane coupling agent, 10 parts of organic siliconresin, 5 parts of kaolin.
Embodiment 7
A kind of preparation method of clear-water concrete is carried out according to the method for embodiment 2, the difference is that: regenerated coarse aggregate exists
3h is impregnated in modification liquid before mixing with other raw materials, by weight, modification liquid includes: the waterglass that mass concentration is 5%
80 parts, 10 parts of silane coupling agent, 20 parts of organic siliconresin, 10 parts of kaolin.
Comparative example 1
A kind of preparation method of clear-water concrete is carried out according to the method for embodiment 2, the difference is that: regenerated coarse aggregate is not
Immersion modification is carried out, directly raw material is prepared with other and is mixed.
Performance detection
The compression strength of embodiment 1-7 and comparative example 1 clear-water concrete prepared is detected, testing result is as shown in table 1.
The compression strength testing result of 1 clear-water concrete of table
According to table 1, preparing raw material proportioning it can be seen from embodiment 2,4,5 has larger shadow to the compressive property of clear-water concrete
It rings, wherein the compression strength of the clear-water concrete of the preparation in embodiment 2 is maximum, illustrates the preparation raw material proportioning in embodiment 2
The most rationally.This is because the hydro-thermalization due to cement acts on, in process of setting, inside can discharge largely clear-water concrete
Heat, cause inside clear-water concrete and the temperature difference of external environment be larger, so that clear-water concrete mix is in process of setting
In be easy to appear the cracking phenomenas such as crackle, thus reduce clear-water concrete solidification after compression strength.And preparation of the invention is former
Material proportion rationally, can substantially reduce the hydro-thermalization effect in clear-water concrete process of setting, it is solidifying thus to reduce clear-water concrete
Internal-external temperature difference during Gu, the compression strength after thus improving clear-water concrete solidification.
The compression strength of the clear-water concrete of embodiment 1-7 preparation is greatly increased compared with comparative example 1, illustrates this
Invention can effectively improve the compression strength of clear-water concrete to the modification of regenerated coarse aggregate.This is because regenerating thick bone
Expect usually porosity with higher, make it have stronger water absorption rate, after in clear-water concrete, water absorption is big, causes
The cohesiveness of slurry in clear-water concrete is deteriorated, can not preferable package aggregate so that the compression strength of clear-water concrete becomes
Difference, and in the present invention, by the way that regenerated coarse aggregate to be soaked in the reasonable modification liquid of proportion, the hole of regenerated coarse aggregate is carried out
Closing, reduces the porosity of regenerated coarse aggregate, to improve the compression strength of clear-water concrete.In conjunction with comparative example 2,6,7
As can be seen that the compressive property with comparison clear-water concrete of the modifying agent in the present invention has larger impact, wherein embodiment 2
In modifying agent proportion it is the most reasonable.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (8)
1. a kind of preparation method of clear-water concrete, which is characterized in that
By weight, the raw material for preparing of clear-water concrete includes following components: 350-400 parts of cement, flyash 20-60
Part, 60-80 parts of miberal powder, 500-600 parts of water sand, 200-300 parts of fine sand, 230-260 parts of regenerated coarse aggregate, 680-720 parts of rubble,
140-170 parts of water, 1.5-2.5 parts of water-reducing agent；
Preparation method includes following steps: regenerated coarse aggregate impregnates 1-3h before mixing with other raw materials in modification liquid, presses
Parts by weight meter, modification liquid include: 60-80 parts of the waterglass that mass concentration is 5%, 5-10 parts of silane coupling agent, organic siliconresin
10-20 parts, 5-10 parts of kaolin.
2. a kind of preparation method of clear-water concrete according to claim 1, which is characterized in that by weight, including
Have following components: 375 parts of cement, 40 parts of flyash, 75 parts of miberal powder, 550 parts of water sand, 250 parts of fine sand, 250 parts of regenerated coarse aggregate,
705 parts of rubble, 155 parts of water, 1.85 parts of water-reducing agent.
3. a kind of preparation method of clear-water concrete according to claim 1, which is characterized in that by weight, modified
Liquid includes: 70 parts of the waterglass that mass concentration is 5%, 8 parts of silane coupling agent, 15 parts of organic siliconresin, 7 parts of kaolin.
4. a kind of preparation method of clear-water concrete according to claim 1, it is characterised in that: the regenerated coarse aggregate
Partial size is 5-10mm.
5. a kind of preparation method of clear-water concrete according to claim 1, it is characterised in that: the partial size of the rubble is
5-25mm。
6. a kind of preparation method of clear-water concrete according to claim 1, it is characterised in that: the water-reducing agent is poly- carboxylic
Sour water-reducing agent.
7. a kind of preparation method of clear-water concrete according to claim 1, it is characterised in that: the cement is
P.O42.5。
8. a kind of preparation method of clear-water concrete according to claim 1, it is characterised in that: the miberal powder is S95 mine
Powder.
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| CN201811555656.4A CN109503078B (en) | 2018-12-18 | 2018-12-18 | Preparation method of fair-faced concrete |
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| CN201811555656.4A CN109503078B (en) | 2018-12-18 | 2018-12-18 | Preparation method of fair-faced concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN110818366A (en) * | 2019-12-25 | 2020-02-21 | 泸州临港思源混凝土有限公司 | Fair-faced concrete and preparation process thereof |
| CN110845184A (en) * | 2019-11-18 | 2020-02-28 | 北京太平洋水泥制品有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN111056776A (en) * | 2019-12-17 | 2020-04-24 | 深圳市恒星建材有限公司 | High slump retaining recycled concrete and preparation method thereof |
| CN112010602A (en) * | 2020-08-18 | 2020-12-01 | 湖州上建混凝土有限公司 | High-strength recycled aggregate concrete and preparation method thereof |
| CN112358248A (en) * | 2020-11-25 | 2021-02-12 | 北京城建九秋实混凝土有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN112960953A (en) * | 2021-03-04 | 2021-06-15 | 河北建筑工程学院 | Nano metakaolin recycled concrete and preparation method thereof |
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| CN112010602A (en) * | 2020-08-18 | 2020-12-01 | 湖州上建混凝土有限公司 | High-strength recycled aggregate concrete and preparation method thereof |
| CN112358248A (en) * | 2020-11-25 | 2021-02-12 | 北京城建九秋实混凝土有限公司 | Recycled aggregate concrete and preparation method thereof |
| CN112960953A (en) * | 2021-03-04 | 2021-06-15 | 河北建筑工程学院 | Nano metakaolin recycled concrete and preparation method thereof |
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| CN109503078B (en) | 2021-02-09 |
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