CN109400074A - A kind of energy conservation anti-crack concrete - Google Patents
A kind of energy conservation anti-crack concrete Download PDFInfo
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- CN109400074A CN109400074A CN201811564660.7A CN201811564660A CN109400074A CN 109400074 A CN109400074 A CN 109400074A CN 201811564660 A CN201811564660 A CN 201811564660A CN 109400074 A CN109400074 A CN 109400074A
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of energy saving anti-crack concretes, belong to technical field of concrete, its key points of the technical solution are that score meter by weight, including 200-300 parts of cement, 60-120 parts of flyash, 150-200 parts of fine grinding admixture, 550-750 parts of river sand, 600-900 parts of coarse aggregate, 5-15 parts of high-performance carboxylic acid water reducer, 80-180 parts of gelling agent, 60-150 parts of external additive, 140-150 parts of water, the porosity of gelling agent and high-performance polycarboxylic acids water reducing agent reduction concrete.Achieve the effect that the cracking resistance for improving concrete.
Description
Technical field
The present invention relates to concrete field, in particular to a kind of energy saving anti-crack concrete.
Background technique
In recent years, concrete structure because of premature failure caused by Material degradation so that destroy the accident of avalanche at home and abroad repeatly between
It is not fresh.Common phenomenon has concrete surface cracking, peeling, steel bar corrosion exposed, to the resistance to of concrete and reinforced concrete structure
Long property constitutes a serious threat.
A kind of heterogeneous brittle material mixed by sandstone aggregate, cement, water and other materials when concrete.Due to
A series of problems, such as concrete construction and deformation itself, constraint, there is numerous micropores, gas in the concrete of hardened forming
Cave and microcrack reduce reinforced concrete since the presence and development in crack would generally make the materials such as internal reinforcing bar generate corrosion
Bearing capacity, durability and the impermeability of soil material, influence appearance, the service life of building, and serious person will threaten
People.
There are many distress in concrete Producing reason, mainly have drying shrinkage generate crack, have chemical reaction caused by crack and
There is plastic shrinkage cracks, the crack that these different reasons generate can have an impact the performance of concrete.Domestic Super High is built
It builds during construction using measures such as storehouse construction method, pre-buried cooling water pipe, placement layer by layer and block placements.But these are constructed
Method not only influences the structure of concrete, and complicated construction technique, and construction cost is high.
Summary of the invention
In view of the deficienciess of the prior art, reaching raising the object of the present invention is to provide a kind of energy saving anti-crack concrete
The effect of the cracking resistance of concrete.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of energy conservation anti-crack concrete, by weight score meter, including 200-300 parts of cement, 60-120 parts of flyash, fine grinding blending
Expect 150-200 parts, 550-750 parts of river sand, 600-900 parts of coarse aggregate, 5-15 parts of high-performance carboxylic acid water reducer, gelling agent 80-180
Part, 60-150 parts of external additive, 140-150 parts of water.
By using above-mentioned technical proposal, the shrinkage performance that the addition of flyash can change concrete reduces, and mixes simultaneously
The mobility for coagulating soil also improves, to improve cracking resistance, stagnating on the interface between cement and rubble has a large amount of hydroxide
Calcium, crystallization on interface and aligns, and causes the intensity of concrete and durability to reduce, the addition of polycarboxylate water-reducer
Voidage after concrete hardening can be greatly lowered lowers the heat of hydration, to reduce water so that concrete becomes dense
Dosage, while the use of high-performance polycarboxylic acids water reducing agent improves the slump and workability of concrete；Fine grinding admixture adds
Enter to reduce the dosage of cement, to reduce the ratio of mud, effectively improves the cracking resistance of concrete；Gelling agent and external additive
It is used cooperatively, can be good at being filled into the hole of glue material, reduce porosity, effectively prevent later concrete to shrink, expansion
Etc. crack caused by reasons, reduce the heat of hydration, improve the cracking resistance of coagulation.
The present invention is further arranged to, by weight score meter, and gelling agent includes 20 parts of epoxy resin, 30 parts of polyurethane, second
25 parts of acetoacetic ester, 0 part of phosphatase 11.
By using above-mentioned technical proposal, epoxy resin can be dissolved with ethyl acetate, and epoxy resin dissolves and acetic acid
After in ethyl ester, under the catalytic action of phosphoric acid, lysate and polyurethane reaction generate the addition product of hydrolysis-stable while also having
There is certain viscosity, this substance is filled into the gap in glue material, both plays the role of cohesion, while this addition to glue material
Object hydrolysis-stable can effectively reduce the heat of hydration of concrete, while when can also effectively prevent later period concrete coagulation, drying shrinkage occurs
The case where, to effectively improve the cracking resistance of concrete.
The present invention is further arranged to, by weight score meter, and external additive includes 75-125 parts of orthoaluminic acid calcium swelling agent, subtracts
55-95 parts of contracting agent, 45-105 parts of fiber.
By using above-mentioned technical proposal, orthoaluminic acid calcium swelling agent belongs to calcium sulphoaluminate type cement expansive material, orthoaluminic acid
The use of calcium swelling agent, reduces the dosage of cement, reduces the ratio of mud, and economization agent and orthoaluminic acid calcium swelling agent are used cooperatively,
The cracking resistance of concrete is effectively improved, while fiber diameter is small, when being filled in the hole of glue material, so that concrete becomes close
It is real, the dosage of water is reduced, when effectivelying prevent later period concrete water evaporation, drying shrinkage occurs in concrete, improves the cracking resistance of concrete
Performance；Orthoaluminic acid calcium swelling agent expansion energy is big, and later strength is high, and drying shrinkage is small, can be improved the cracking of concrete structure, mentions
High-impermeable waterproof performance.
The present invention is further arranged to, by weight score meter, and external additive includes 90 parts of orthoaluminic acid calcium swelling agent, economization agent
75 parts, 75 parts of fiber.
The present invention is further arranged to, by weight score meter, fiber include 35-75 parts of carbon fiber, 50-70 parts of steel fibre,
40-50 parts of polypropylene fibre.
By using above-mentioned technical proposal, carbon fiber is filled into the hole of concrete glue material, improves the corrosion resistant of concrete
Corrosion energy, while carbon fiber density is low, performance is high, and high temperature resistant, concrete can effectively prevent coagulation during long-time service
There is drying shrinkage in soil, and the addition of steel fibre can be improved the interfacial adhesion between glue material, can effectively prevent separating between glue material, split
Seam, while additions of steel fibre can be improved tension, the bending strength of concrete, and be greatly improved the toughness of concrete with
Impact strength；There is higher toughness when polypropylene fibre is distributed in concrete, one is played to steel fibre and carbon fiber
Fixed cohesion effectively prevent drying shrinkage phenomenon occur because of moisture evaporation between concrete glue material, to improve the anti-of concrete
Fragility energy.
The present invention is further arranged to, by weight score meter, including 250 parts of cement, 90 parts of flyash, fine grinding admixture
175 parts, 650 parts of river sand, 750 parts of coarse aggregate, 100 parts of swelling agent, 10 parts of high-performance carboxylic acid water reducer, 130 parts of gelling agent, add outside
Add 100 parts of agent, 145 parts of water.
The present invention is further arranged to, by weight score meter, and fine grinding admixture includes 130 parts of super finely ground slag, silicon ash 110
Part.
By using above-mentioned technical proposal, the equal very little of the partial size of super finely ground slag and silicon ash, so as to be filled into well
In the hole of concrete glue material, so that concrete compaction, while the addition of super finely ground slag and silicon ash, reduce the dosage of cement,
The addition of super finely ground slag and silicon ash simultaneously, effectively improves the compression strength of concrete, reduces the cost of concrete, reduces coagulation
The appearance in the crack that native early stage generates by temperature change, improves impervious and corrosion resistance.
The present invention is further arranged to, and cement uses ordinary portland cement.
By using above-mentioned technical proposal, the heat of hydration of ordinary portland cement is less than the heat of hydration of portland cement, mentions
The cracking resistance of high coagulation figure.
The present invention is further arranged to, by weight score meter, and coarse aggregate includes 100-150 parts of continuous grading cobble, tailing
80-120 parts of stone.
By using above-mentioned technical proposal, being used cooperatively for cobble and tailings stone achievees the effect that waste utilization, connects simultaneously
Good workability is formed between continuous gradation cobble and concrete aggregate, isolation is not likely to produce, is suitably vibrated, can be obtained closely knit
Concrete, to improve the intensity of concrete.
In conclusion the invention has the following advantages:
1, high-performance polycarboxylic acids water reducing agent and gelling agent are used cooperatively, and can change the row of the calcium hydroxide between concrete interface
Column, improve the intensity and durability of concrete, while the addition of gelling agent, a glue material are closely bonded together,
Porosity is reduced, the cracking resistance of concrete is improved；
2, the addition of fiber enables to super finely ground slag, silicon ash to be distributed between the glue material of concrete well, both fill concrete
Hole, while the polypropylene fibre in fiber have adhesive property, the various glue materials in concrete are closely glued
Knot together, reduces the porosity of concrete, improves the cracking resistance of concrete.
Specific embodiment
Embodiment 1
A kind of energy conservation anti-crack concrete, score meter by weight, including 200 parts of cement, 60 parts of flyash, 150 parts of fine grinding admixture,
550 parts of river sand, 600 parts of coarse aggregate, 5 parts of high-performance carboxylic acid water reducer, 80 parts of gelling agent, 60 parts of external additive, 140 parts of water,
Middle cement uses ordinary portland cement, and fine grinding admixture includes 130 parts of super finely ground slag, and 110 parts of silicon ash, coarse aggregate includes continuous
100 parts of gradation cobble, 80 parts of tailings stone, gelling agent include 20 parts of epoxy resin, 30 parts of polyurethane, 25 parts of ethyl acetate, phosphoric acid
10 parts, external additive includes 75 parts of orthoaluminic acid calcium swelling agent, 55 parts of economization agent, 45 parts of fiber, and wherein fiber includes carbon fiber 35
Part, 50 parts of steel fibre, 40 parts of polypropylene fibre.
Embodiment 2
A kind of energy conservation anti-crack concrete, by weight score meter, including 250 parts of cement, 90 parts of flyash, fine grinding admixture 175
Part, 650 parts of river sand, 750 parts of coarse aggregate, 100 parts of swelling agent, 10 parts of high-performance carboxylic acid water reducer, 130 parts of gelling agent, outer addition
100 parts of agent, 145 parts of water, wherein cement uses ordinary portland cement, and fine grinding admixture includes 130 parts of super finely ground slag, silicon ash
110 parts, coarse aggregate includes 125 parts of continuous grading cobble, 100 parts of tailings stone, and gelling agent includes 20 parts of epoxy resin, polyurethane 30
Part, 25 parts of ethyl acetate, 0 part of phosphatase 11, external additive include 90 parts of orthoaluminic acid calcium swelling agent, 75 parts of economization agent, 75 parts of fiber,
Wherein fiber includes 55 parts of carbon fiber, 60 parts of steel fibre, 45 parts of polypropylene fibre.
Embodiment 3
A kind of energy conservation anti-crack concrete, by weight score meter, including 300 parts of cement, 120 parts of flyash, fine grinding admixture 200
Part, 750 parts of river sand, 900 parts of coarse aggregate, 15 parts of high-performance carboxylic acid water reducer, 180 parts of gelling agent, 150 parts of external additive, water 140
Part, wherein cement uses ordinary portland cement, and fine grinding admixture includes 130 parts of super finely ground slag, and 110 parts of silicon ash, coarse aggregate packet
150 parts of continuous grading cobble, 120 parts of tailings stone are included, gelling agent includes 20 parts of epoxy resin, 30 parts of polyurethane, ethyl acetate 25
Part, 0 part of phosphatase 11, external additive includes 125 parts of orthoaluminic acid calcium swelling agent, 95 parts of economization agent, 105 parts of fiber, and wherein fiber includes
75 parts of carbon fiber, 70 parts of steel fibre, 50 parts of polypropylene fibre.
Comparative example 1
With embodiment 2 the difference is that without fiber in external additive.
Comparative example 2
With embodiment 2 the difference is that without polypropylene fibre in fiber.
Concrete made of embodiment 1-3 and comparative example 1-2 is detected.
Crack-resistant performance of concrete is detected according to " Standard for quality control of concrete " GB50164-2011, concrete early stage is anti-
Fragility energy grade classification table is as shown in table 1, and detection data is as shown in table 2.
1 concrete early-stage crack resistance of table obtains grade classification
| Grade | L1 | L2 | L3 | L4 | L5 |
| Total area of cracks C(mm on unit area2/m2) | C≥1000 | 700≤C < 1000 | 400≤C < 700 | 100≤C < 400 | C < 100 |
2 crack-resistant performance of concrete detection data of table
| Test specimen | Total area of cracks C(mm on unit area2/m2) |
| Embodiment 1 | 130 |
| Embodiment 2 | 96 |
| Embodiment 3 | 125 |
| Comparative example 1 | 350 |
| Comparative example 2 | 245 |
The analysis of table 2 can be obtained:
(1) embodiment 1-3, total area of cracks on unit area in embodiment 2 are less than embodiment 1 and embodiment 3, say
The cracking resistance of concrete made from various proportions in bright embodiment 2 is best, and the matching relationship between various proportions is preferably also；
(2) embodiment 2 and comparative example 1-2 are analyzed, the cracking resistance in comparative example 1-2 is respectively less than the crack resistance of embodiment 2
Can, and when there is no fiber in concrete, the cracking resistance of concrete is worst, when there is no polypropylene fibre in comparative example 2, comparison
The cracking resistance of concrete made from example 2 is more far short of what is expected than the cracking resistance of embodiment 2, illustrates polypropylene fibre in concrete
It plays an important role in cracking resistance.
It in conclusion the partial size of fiber is smaller, can be good at being filled into the hole of concrete glue material, reduce coagulation
The porosity of soil, improves the density of concrete, while polypropylene fibre toughness with higher, to concrete glue material, carbon
Fiber and steel fibre have cementitiousness, and steel fibre and carbon fiber is enabled closely to be bonded in the surface of glue material, thus
The porosity for reducing concrete, improves the breaking resistance of concrete.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of energy conservation anti-crack concrete, it is characterised in that: score meter by weight, including 200-300 parts of cement, flyash 60-
120 parts, 150-200 parts of fine grinding admixture, 550-750 parts of river sand, 600-900 parts of coarse aggregate, high-performance carboxylic acid water reducer 5-15
Part, 80-180 parts of gelling agent, 60-150 parts of external additive, 140-150 parts of water.
2. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: score meter by weight, gelling agent packet
Include 20 parts of epoxy resin, 30 parts of polyurethane, 25 parts of ethyl acetate, 0 part of phosphatase 11.
3. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: score meter by weight, external additive
Including 75-125 parts of orthoaluminic acid calcium swelling agent, 55-95 parts of economization agent, 45-105 parts of fiber.
4. a kind of energy saving anti-crack concrete according to claim 3, it is characterised in that: score meter by weight, external additive
Including 90 parts of orthoaluminic acid calcium swelling agent, 75 parts of economization agent, 75 parts of fiber.
5. a kind of energy saving anti-crack concrete according to claim 3, it is characterised in that: score meter, fiber include by weight
35-75 parts of carbon fiber, 50-70 parts of steel fibre, 40-50 parts of polypropylene fibre.
6. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: score meter by weight, including cement
250 parts, 90 parts of flyash, 175 parts of fine grinding admixture, 650 parts of river sand, 750 parts of coarse aggregate, 100 parts of swelling agent, high-performance carboxylic acid
10 parts of water-reducing agent, 130 parts of gelling agent, 100 parts of external additive, 145 parts of water.
7. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: score meter by weight, fine grinding blend
Material includes 130 parts of super finely ground slag, 110 parts of silicon ash.
8. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: cement uses normal silicate water
Mud.
9. a kind of energy saving anti-crack concrete according to claim 1, it is characterised in that: score meter by weight, coarse aggregate packet
Include 100-150 parts of continuous grading cobble, 80-120 parts of tailings stone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811564660.7A CN109400074A (en) | 2018-12-20 | 2018-12-20 | A kind of energy conservation anti-crack concrete |
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| CN201811564660.7A CN109400074A (en) | 2018-12-20 | 2018-12-20 | A kind of energy conservation anti-crack concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218045A (en) * | 2019-06-06 | 2019-09-10 | 北京泽华路桥工程有限公司 | A kind of crack resistance concrete and preparation method thereof |
| CN112174589A (en) * | 2020-10-10 | 2021-01-05 | 杭州瑞鼎建材有限公司 | Anti-crack concrete and preparation method thereof |
| CN114873968A (en) * | 2022-05-05 | 2022-08-09 | 中国建筑材料科学研究总院有限公司 | High-crack-resistance concrete and forming method and application thereof |
| CN115745475A (en) * | 2022-05-27 | 2023-03-07 | 潘平萍 | Concrete capable of improving crack resistance and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986477A (en) * | 2005-12-21 | 2007-06-27 | 靖富资源科技股份有限公司 | Cement plate and its production process |
| JP2009084118A (en) * | 2007-10-01 | 2009-04-23 | Denki Kagaku Kogyo Kk | Method for producing cement concrete tube by using cement concrete for centrifugal molding, and cement concrete tube produced by the method |
| KR20090127492A (en) * | 2008-06-09 | 2009-12-14 | 허정도 | Composition of soil-polymer-cement concretes using principles of polymer cement concretes |
| CN104482500A (en) * | 2014-12-22 | 2015-04-01 | 常熟史美特节能照明技术有限公司 | LED (Light Emitting Diode) lamp of small size |
| CN104817298A (en) * | 2015-04-20 | 2015-08-05 | 中建三局集团有限公司 | Pumpable steel slag concrete for controlling physical expansion and preparation method thereof |
| CN105481323A (en) * | 2016-02-02 | 2016-04-13 | 金陵科技学院 | Carbon fiber composite concrete and preparation method thereof |
| CN108609953A (en) * | 2018-05-21 | 2018-10-02 | 西南交通大学 | A kind of anti-folding, abrasion-proof concrete for prestressing force assembled road surface |
| CN108863133A (en) * | 2018-07-24 | 2018-11-23 | 广东粤盛特种建材有限公司 | A kind of efficient special fibre antimitotic agent and preparation method thereof |
-
2018
- 2018-12-20 CN CN201811564660.7A patent/CN109400074A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986477A (en) * | 2005-12-21 | 2007-06-27 | 靖富资源科技股份有限公司 | Cement plate and its production process |
| JP2009084118A (en) * | 2007-10-01 | 2009-04-23 | Denki Kagaku Kogyo Kk | Method for producing cement concrete tube by using cement concrete for centrifugal molding, and cement concrete tube produced by the method |
| KR20090127492A (en) * | 2008-06-09 | 2009-12-14 | 허정도 | Composition of soil-polymer-cement concretes using principles of polymer cement concretes |
| CN104482500A (en) * | 2014-12-22 | 2015-04-01 | 常熟史美特节能照明技术有限公司 | LED (Light Emitting Diode) lamp of small size |
| CN104817298A (en) * | 2015-04-20 | 2015-08-05 | 中建三局集团有限公司 | Pumpable steel slag concrete for controlling physical expansion and preparation method thereof |
| CN105481323A (en) * | 2016-02-02 | 2016-04-13 | 金陵科技学院 | Carbon fiber composite concrete and preparation method thereof |
| CN108609953A (en) * | 2018-05-21 | 2018-10-02 | 西南交通大学 | A kind of anti-folding, abrasion-proof concrete for prestressing force assembled road surface |
| CN108863133A (en) * | 2018-07-24 | 2018-11-23 | 广东粤盛特种建材有限公司 | A kind of efficient special fibre antimitotic agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 曹云来: "《密封胶：技术•配方•应用》", 30 September 2001, 化学工业出版社 * |
| 杨杨等: "《土木工程材料》", 31 July 2018, 武汉大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218045A (en) * | 2019-06-06 | 2019-09-10 | 北京泽华路桥工程有限公司 | A kind of crack resistance concrete and preparation method thereof |
| CN112174589A (en) * | 2020-10-10 | 2021-01-05 | 杭州瑞鼎建材有限公司 | Anti-crack concrete and preparation method thereof |
| CN112174589B (en) * | 2020-10-10 | 2021-12-28 | 杭州瑞鼎建材有限公司 | Anti-crack concrete and preparation method thereof |
| CN114873968A (en) * | 2022-05-05 | 2022-08-09 | 中国建筑材料科学研究总院有限公司 | High-crack-resistance concrete and forming method and application thereof |
| CN115745475A (en) * | 2022-05-27 | 2023-03-07 | 潘平萍 | Concrete capable of improving crack resistance and preparation method thereof |
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Application publication date: 20190301 |