CN108863180A - A kind of cracking resistance water-tight concrete and preparation method thereof - Google Patents
A kind of cracking resistance water-tight concrete and preparation method thereof Download PDFInfo
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- CN108863180A CN108863180A CN201810710448.0A CN201810710448A CN108863180A CN 108863180 A CN108863180 A CN 108863180A CN 201810710448 A CN201810710448 A CN 201810710448A CN 108863180 A CN108863180 A CN 108863180A
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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
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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
- C04B20/02—Treatment
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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
- 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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of cracking resistance water-tight concretes, it relates generally to the field of building materials, according to the mass fraction, including following components, 36~42 parts of cement, 13~17 parts of flyash, 0.7~1.3 part of water-reducing agent, 16~22 parts of sand, 14~18 parts of rubble, 7~13 parts of conch meal, 5~9 parts of diphenyl methane dimaleimide, 3~7 parts of alkylcellulose, 1.3~1.7 parts of iodized salt, 4~8 parts of grinding wheel ash, 1.6~2.2 parts of metal oxide, 1.3~1.7 parts of sodium dialkyl sulfate, 1.2~1.8 parts of complexing agent, 45~65 parts of water.This kind of concrete has the intensity of stronger resistance to compression and stretch-proof, can be effectively reduced concrete and be occurred slight crack by mechanism and damage.Meanwhile also having the function of antibacterial, it can effectively extend the service life of concrete.In addition preparation method is simple, is suitble to largely be produced.
Description
Technical field
The present invention relates to field the field of building materials, more specifically, it relates to a kind of cracking resistance water-tight concrete and its system
Preparation Method.
Background technique
Concrete is the main material of modern project structure, and the dosage of the annual concrete in China is about 2,000,000,000 m3, occupies the world
Forefront.With the continuous development of material science and engineering technology and the continuous improvement of concrete performance, concrete is more and more
Ground is used in the important structure position such as super high-rise building, water resources dam, nuclear power station, underground structure.
Since design problem, construction problem and concrete own physical shrink the influence with unfavorable factors such as internal-external temperature differences, make
Concrete structure generates damage accumulation and degradation resistance, thus the problems such as generating crack and leakage.Therefore, crack and leakage always
It is all the significant problem that concrete structure faces.
Meanwhile with the rapid development of skyscraper, higher and higher to the construction requirement of concrete, pump concrete has become
The important means of concrete construction.In order to improve the working performance of concrete, the water consumption of concrete inevitably will increase,
The cracking infiltration problem of concrete also just more becomes increasingly conspicuous.Moreover, requirement of the high-rise to basement structure is also more next
Higher, the especially higher area of level of ground water, the problem of preventing leakage is more prominent.But skyscraper coagulation at present
The phenomenon that native basement wall crackle, is generally existing, and the use of building is not only influenced because of leakage, but also seriously reduces building
The durability of object remedies processing from now on and causes extreme difficulties.According to statistics, the water leakage ratio of current China's City Building is about
60%, the leak house of completion is up to 37%, every year because leakage of buildings maintenance just consumes substantial contribution.
For this reason, it is necessary to develop a kind of concrete that cracking resistance is impervious, to extend the service life of building, building weight is reduced
The number and expense repaired again.
Summary of the invention
It, can in view of the deficiencies of the prior art, the present invention intends to provide a kind of cracking resistance water-tight concrete
Enhance the cracking resistance and impervious function of building entirety, and then helps to extend the service life of building, and its preparation side
Method is relatively simple, is suitble to be produced on a large scale.
To achieve the above object, the present invention provides following technical solutions：A kind of cracking resistance water-tight concrete, by mass fraction
Meter, including following components, 36~42 parts of cement, 13~17 parts of flyash, 0.7~1.3 part of water-reducing agent, 16~22 parts of sand, rubble
14~18 parts, 7~13 parts of conch meal, 5~9 parts of diphenyl methane dimaleimide, 3~7 parts of alkylcellulose, iodized salt 1.3
~1.7 parts, 4~8 parts of grinding wheel ash, 1.6~2.2 parts of metal oxide, 1.3~1.7 parts of sodium dialkyl sulfate, complexing agent 1.2~
1.8 parts, 45~65 parts of water.
By using above-mentioned technical proposal, alkylcellulose is capable of forming mixed and disorderly fiber frame body in concrete, thus
It can link together each substance, thus after concrete curing, the intensity of resistance to compression and the stretch-proof of concrete itself
It just will increase, and then the performance that the cracking resistance for being also advantageous for raising concrete is impervious.
Meanwhile grinding wheel ash directly abandons as solid waste and is easy pollution environment, while its main ingredient is titanium dioxide
Silicon, and the granularity of general grinding wheel ash is 3000 mesh or so, is added in concrete in this way, it can effectively
Fill up the gap of each storeroom of concrete, thus can not only improve it is concrete curing after intensity, while can also increase mixed
The density for coagulating soil, improves the anti-permeability performance of concrete.
Furthermore the addition of iodized salt improves the thermal stability of concrete, facilitated to promote alkylcellulose class by it
Thermal stability, so that alkylcellulose can also guarantee relatively stable when building is when summer receives high temperature and scorches
State, and then also just further improve the cracking resistance of concrete.
Preferably, the conch meal is by the enzyme solution processing containing alkali protease, papain and trypsase.
After concrete long-time use, surface is easy to grow each quasi-microorganism, and microorganism gives birth at itself
Acidic materials are often generated in long process, to be easy to cause to corrode to concrete, its surface are accelerated to generate slight crack.And shellfish
Shell powder into cross enzyme solution processing after, inside can generate chitin.Chitin not only has stronger antibacterial characteristics, can be effective
Ground inhibits microorganism to grow in concrete surface, while itself also has stronger viscosity, to be conducive to enhance concrete
Internal adhesion strength, and then also improve concrete itself cracking resistance.
Preferably, the iodized salt is lithium iodide.
By using above-mentioned technical proposal, lithium iodide is compared to other iodized salts, not only due to the physical property of itself has
Conducive to the stability for improving nylon.Meanwhile the lithium ion in lithium iodide can also be deposited between the carbonyl in alkylcellulose
In mating reaction, the structure of similar network is produced, hinders the movement of the strand and corresponding free radical of alkylcellulose, because
And make polymer molecular chain that need to overcome bigger energy barrier than entirely free on his strand when being thermally decomposed, to have higher
Thermal decomposition temperature.
Preferably, mixture of the water-reducing agent by triglyceride and lignosulfonates, and triglyceride and wood
The mass ratio 1 of mahogany sulfonate：1.3~1.7.
By using above-mentioned technical proposal, water-reducing agent can not only reduce the water consumption of concrete herein, meanwhile, three acid are sweet
Grease can be easy to happen saponification with the partial alkaline substance in conch meal, and the higher fatty acid salt generated has well
Wetting function and dispersion performance, to may advantageously facilitate concrete in the construction process, each material can have good stream
Flat effect, and then the density of concrete is effectively improved, further enhance the impervious performance of the cracking resistance of concrete.
Meanwhile the fatty acid radical of the higher aliphatic salt of formation can also be with the Ca in conch meal2+ 、CaHCO3 + 、CaOH+Deng
Ionic reaction generates fatty acid calcium sediment, and is coated on conch meal particle surface, also, the alkyl in fatty acid calcium makes shellfish
Shell powder surface nature becomes oleophylic by hydrophilic, to be conducive to improve the ability of agent on crack resistance of concrete raindrop erosion.In addition, due to fat
The caking property of sour calcium is also relatively strong, so that being conducive to each material forms good bond effect, and then increases concrete
Crack resistance.
Preferably, the alkylcellulose is in hydroxyethyl cellulose, hydroxymethyl cellulose and hydroxypropyl methyl cellulose
One or more of mixtures.
When the higher fatty acid salt that saponification generates is fine by hydroxyethyl cellulose, hydroxymethyl cellulose and hydroxypropyl methyl
Dimension element wetting after, then to concrete dry solidification after, hydroxyethyl cellulose, hydroxymethyl cellulose and hydroxypropyl methyl cellulose
Toughness will get a promotion, thus be also beneficial to improve concrete toughness, reduce concrete and hit or pressed
In the case where power, there is the probability of slight crack.
Preferably, the content of tetra calcium aluminoferrite is 32~38%wt in the cement, and the content of tricalcium aluminate is 8~14%
wt。
By using above-mentioned technical proposal, using tetra calcium aluminoferrite content is high and cement that the content of tricalcium aluminate is low is made
If standby concrete, the limit stretch value of concrete just be will increase, to be also beneficial to improve the cracking resistance of concrete.
Preferably, the metal oxide is the mixture of one or more of magnesia, calcium oxide and iron oxide.
By using above-mentioned technical proposal, metal oxide can produce high concentration basic environment, so that in raw material
Fracture-recombining reaction occurs for silicon oxygen bond and alumina key, and being formed has the inorganic non-of high intensity, long-term chemical durability and permanent seal cooling
Metal material.
Preferably, the complexing agent is any one in disodium ethylene diamine tetraacetate and tetrasodium ethylenediamine tetraacetate.
By using above-mentioned technical proposal, complexing agent is added, so that complexing-precipitating occurs for the calcium ion in itself and cement base
Reaction, that is, generate crystallization not soluble in water, to block the blocking pore in concrete, and then its arrived it is good impervious
Function.
A kind of preparation method of cracking resistance water-tight concrete, includes the following steps：
Step 1: by 36~42 parts of cement, 13~17 parts of flyash, 0.7~1.3 part of water-reducing agent, 16~22 parts of sand, 14~18 parts
Rubble, 7~13 parts of conch meals, 5~9 parts of diphenyl methane dimaleimides and gross mass 2/3rds water be added in blender
It is stirred mixing；
Step 2: by 3~7 parts of alkylcelluloses, 1.3~1.7 parts of iodized salts, 4~8 parts of grinding wheel ashes, 1.6~2.2 parts of metal oxygens
Compound, 1.3~1.7 parts of sodium dialkyl sulfates, 1.2~1.8 parts of complexing agents and remaining gross mass one third water be added to step
Mixing is futher stirred in rapid one blender, obtains finished product concrete.
Preferably, in step 2 when each material is when mixing, to being constantly passed through air inside material.
By using above scheme, concrete is agitated using air, is conducive to the flowing for improving inside concrete in this way
Property, to be conducive to that inside concrete realization is promoted to be uniformly dispersed.
In conclusion the invention has the advantages that：
1, it using the physical structure of alkylcellulose itself, to maintain the connection between each material, to also just can be improved, mixes
Coagulate the breaking resistance of soil；
2, grinding wheel ash mainly becomes silica as solid refuse, and its granularity is 3000 mesh or so, so as to have
Effect fill up small hole, improve the density of concrete, so while promoting concrete structural strength but also
It has good anti-permeability performance；
3, the conch meal of enzyme solution treatment process is added in concrete, the anti-microbial property of concrete can be enhanced in this way, thus
Also concrete can be reduced by the probability of microbial attack.
Detailed description of the invention
Fig. 1 is a kind of preparation flow figure of cracking resistance water-tight concrete.
Specific embodiment
Below in conjunction with attached drawing 1, invention is further described in detail.
Embodiment one：
A kind of preparation method of cracking resistance water-tight concrete, includes the following steps：
Step 1: by 36Kg cement, 13Kg flyash, 0.7Kg water-reducing agent, 16Kg sand, 14Kg rubble, 7Kg conch meal, 5Kg bis-
Phenylmethane bismaleimide and 30Kg water are added in blender, are stirred mixing, and the revolving speed of stirring is 100rpm；
Step 2: by 3Kg hydroxyethyl cellulose, 1.3Kg lithium iodide, 4Kg grinding wheel ash, 1.6Kg magnesia, 1.3~1.7 parts of dioxanes
Base sodium sulphate, 1.2Kg disodium ethylene diamine tetraacetate and 15Kg water be added in the blender of step 1 futher stir it is mixed
It closes, the revolving speed of agitating paddle is 80rpm, and is passed through air and is agitated, and obtains finished product concrete.
Wherein, water-reducing agent is the mixture of triglyceride and lignosulfonates, and what is selected herein is lignin sulfonic acid
Calcium, their mass ratio are 1：1.3.
And the preparation method of conch meal：The sodium sulfite buffer solution that pH is 8.0 is first prepared, is made with a small amount of Qula is logical
For surfactant, it is catalyzed respectively using the group synthase of the enzymes such as alkali protease, papain and trypsase, by shell
It is soaked in wherein, control constant temperature shaker temperature is 50 DEG C, is hydrolyzed 2 hours under conditions of 300 r/min of revolving speed.Later,
The conch meal for being 10 μm at average particle size by grinding shells.
And the content of tetra calcium aluminoferrite is 32%wt in cement, the content of tricalcium aluminate is 8%wt.
Embodiment two is identical as the preparation method of embodiment one to embodiment five, and difference is only that each object as shown in the table
The quality of material：
| Name of material | Embodiment two | Embodiment three | Example IV | Embodiment five |
| Cement/Kg | 42 | 39 | 36 | 42 |
| Flyash/Kg | 17 | 15 | 17 | 13 |
| Water-reducing agent/Kg | 1.3 | 1.0 | 1.3 | 0.7 |
| Sand/Kg | 22 | 19 | 19 | 22 |
| Rubble/Kg | 18 | 16 | 14 | 16 |
| Conch meal/Kg | 13 | 10 | 13 | 7 |
| Diphenyl methane dimaleimide/Kg | 9 | 7 | 9 | 7 |
| Hydroxyethyl cellulose/Kg | / | / | 1 | / |
| Hydroxymethyl cellulose/Kg | 7 | / | 2 | 3 |
| Hydroxypropyl methyl cellulose/Kg | / | 5 | / | 4 |
| Lithium iodide/Kg | 1.7 | 1.5 | 1.7 | 1.3 |
| Grinding wheel ash/Kg | 8 | 6 | 4 | 6 |
| Magnesia/Kg | / | / | / | 1.1 |
| Calcium oxide/Kg | 2.2 | / | 1.0 | / |
| Iron oxide/Kg | / | 1.9 | 0.9 | 1.1 |
| Sodium dialkyl sulfate/Kg | 1.7 | 1.5 | 1.3 | 1.7 |
| Disodium ethylene diamine tetraacetate/Kg | / | 1.5 | / | 1.2 |
| Tetrasodium ethylenediamine tetraacetate/Kg | 1.8 | / | 1.2 | / |
| Water/Kg | 65 | 55 | 65 | 45 |
Wherein, the matter of embodiment two, embodiment three, example IV and triglyceride and lignosulfonates in embodiment five
Amount is than being respectively 1：1.7,1：1.5,1：1.7,1：1.3.And the water of embodiment two, embodiment three, example IV and embodiment five
The content of tetra calcium aluminoferrite and the content of tricalcium aluminate are respectively 38%wt, 14%wt, 35%wt, 11%wt, 32%wt, 14% in mud
Wt, 38%wt, 11%wt.
Following table is to compression strength and tensile strength behind 28 days of concrete and 56 days and the bacteriostasis rate after 56 days
With 56 days seepage-resistant grades.
| Test item | Embodiment one | Embodiment two | Embodiment three | Example IV | Embodiment five |
| 28d compression strength/Mpa | 150.4 | 167.2 | 160.7 | 158.6 | 161.9 |
| 56d compression strength/Mpa | 149.0 | 165.4 | 158.5 | 156.4 | 159.1 |
| 28d tensile strength/N/mm2 | 46 | 58 | 51 | 53 | 54 |
| 56d tensile strength/N/mm2 | 43 | 57 | 49 | 52 | 52 |
| Bacteriostasis rate/% | 98.1 | 99.3 | 98.5 | 98.7 | 98. |
| Seepage-resistant grade | P10 | P10 | P10 | P10 | P10 |
It can be clearly seen from upper table, the concrete of the invention property that not only self structure has good cracking resistance impervious
Can, meanwhile, it has been also equipped with good antibacterial action, to ensure that the impervious performance of its cracking resistance, can all have been kept for a long time,
Thus be suitble to large area carry out using.
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 (10)
1. a kind of cracking resistance water-tight concrete, according to the mass fraction, including following components,
36~42 parts of cement
13~17 parts of flyash
0.7~1.3 part of water-reducing agent
16~22 parts of sand
14~18 parts of rubble
7~13 parts of conch meal
5~9 parts of diphenyl methane dimaleimide
3~7 parts of alkylcellulose
1.3~1.7 parts of iodized salt
4~8 parts of grinding wheel ash
1.6~2.2 parts of metal oxide
1.3~1.7 parts of sodium dialkyl sulfate
1.2~1.8 parts of complexing agent
45~65 parts of water.
2. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The conch meal passes through containing alkalinity
The enzyme solution of protease, papain and trypsase is handled.
3. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The iodized salt is lithium iodide.
4. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The water-reducing agent is by triglyceride
With the mixture of lignosulfonates, and the mass ratio 1 of triglyceride and lignosulfonates：1.3~1.7.
5. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The alkylcellulose is ethoxy
The mixture of one or more of cellulose, hydroxymethyl cellulose and hydroxypropyl methyl cellulose.
6. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：Tetra calcium aluminoferrite in the cement
Content is 32~38%wt, and the content of tricalcium aluminate is 8~14%wt.
7. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The metal oxide is oxidation
The mixture of one or more of magnesium, calcium oxide and iron oxide.
8. a kind of cracking resistance water-tight concrete according to claim 1, it is characterised in that：The complexing agent is ethylenediamine tetrem
Any one in acid disodium and tetrasodium ethylenediamine tetraacetate.
9. a kind of preparation method of cracking resistance water-tight concrete as described in any one of claim 1 to 8 claim, including
Following steps：
Step 1: by 36~42 parts of cement, 13~17 parts of flyash, 0.7~1.3 part of water-reducing agent, 16~22 parts of sand, 14~18 parts
Rubble, 7~13 parts of conch meals, 5~9 parts of diphenyl methane dimaleimides and gross mass 2/3rds water be added in blender
It is stirred mixing；
Step 2: by 3~7 parts of alkylcelluloses, 1.3~1.7 parts of iodized salts, 4~8 parts of grinding wheel ashes, 1.6~2.2 parts of metal oxygens
Compound, 1.3~1.7 parts of sodium dialkyl sulfates, 1.2~1.8 parts of complexing agents and remaining gross mass one third water be added to step
Mixing is futher stirred in rapid one blender, obtains finished product concrete.
10. a kind of preparation method of cracking resistance water-tight concrete according to claim 9, it is characterised in that：In step 2 when
Each material is constantly passed through air when mixing, to material inside.
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| CN111484293A (en) * | 2020-04-26 | 2020-08-04 | 上海兆捷实业发展有限公司 | Anti-freezing high-performance concrete and preparation method thereof |
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