CN109095859A - A kind of self-healing anti-cracking waterproof root resistance concrete - Google Patents
A kind of self-healing anti-cracking waterproof root resistance concrete Download PDFInfo
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- CN109095859A CN109095859A CN201811070407.6A CN201811070407A CN109095859A CN 109095859 A CN109095859 A CN 109095859A CN 201811070407 A CN201811070407 A CN 201811070407A CN 109095859 A CN109095859 A CN 109095859A
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- root resistance
- resistance concrete
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- 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 present invention provides a kind of self-healing anti-cracking waterproof root resistance concrete, the self-healing anti-cracking waterproof root resistance concrete is made of the raw material of following mass parts: 250-300 parts of cement, 750-850 parts of sand, 1000-1100 parts of rubble, 2-5 parts of water-reducing agent, 10-30 parts of fiber, 15-35 parts of swelling agent, 1-5 parts of water-absorbing resin, 40-60 parts of copper ashes, 10-20 parts of cadmia.By above-mentioned raw materials in proportion uniform mixing to get arrive the self-healing anti-cracking waterproof root resistance concrete.Self-healing anti-cracking waterproof root resistance concrete provided by the invention, which is applied to green planting roofing, has good waterproof and root resistance effect, while having the function of self-healing micro-crack.Preparation method of the present invention is simple, and preparation cost is low, is with a wide range of applications.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of self-healing anti-cracking waterproof root resistance concrete.
Background technique
Green roof refers to paving with the building roof (including roof, balcony, balcony etc.) of planting soil planting plants or underground
Building top.It has neither land occupation resource, and can increase city's green areas, improve air quality, beautifying city scape
It sees, reduces PM2.5 pollution level, while alleviating that urban heat land effect, winter warming summer are heat-insulated, reduce roofing institute bearing temperature
Fluctuation range has become modern architecture development to extend the roofing service life, reduce many advantages, such as room conditioning energy consumption
New direction causes the attention of lot of domestic and foreign researcher.
Greatest problem existing for China's planted roof, that is, root-resistant puncturing problem, and the root-resistant puncturing material used is organic
Flexible composition waterproof root resistance, still, organic component highly volatile aging after being on active service for a long time.It is unable to reach and the building same longevity
Life, late maintenance cost are high.Therefore a kind of rigid root resistance waterproof material is developed to be of great significance for green planting roofing.
Summary of the invention
In consideration of it, the technical problem to be solved in the present invention is that provide it is a kind of have self-healing, cracking resistance, waterproof, root resistance, with build
Build object same service life, planted roof concrete at low cost.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of self-healing anti-cracking waterproof root resistance concrete is provided, the raw material for preparing the concrete include following parts by weight material
Material composition: 250-300 parts of cement, 750-850 parts of sand, 1000-1100 parts of rubble, 2-5 parts of water-reducing agent, 10-30 parts of fiber, expansion
15-35 parts of agent, 1-5 parts of water-absorbing resin, 40-60 parts of copper ashes, 10-20 parts of cadmia, 160-170 parts of water.
According to the above scheme, the cement is common portland cement.
According to the above scheme, the area Sha Weizhong sand, rubble are 5-16mm microlith.
According to the above scheme, the water-reducing agent be poly carboxylic acid series water reducer, aliphatic water reducing agent, how based water reducer, melamine
At least one of amine water-reducing agent.
According to the above scheme, the fiber be steel fibre, aramid fiber, polypropylene fibre, glass fibre, basalt fibre,
At least one of carbon fiber.
According to the above scheme, the swelling agent is the mixture of azodicarbonamide and magnesia, and mixing quality ratio is 1:
5。
According to the above scheme, the water-absorbing resin is ultra-fine hydroscopic high-molecular resin (> 250 mesh).
According to the above scheme, the copper ashes is the industrial residue of generation during copper metallurgy, and copper content is not less than 0.5wt%,
Average grain diameter is less than 10 μm;The cadmia is the waste residue for smelting zinc, and average grain diameter is less than 10 μm, Zn content 0.5wt%-1wt%.
The problem of for background technique, inventor have carried out functionalization improvement to existing concrete, including with
Lower content:
Fiber is added in component, under stress effect, inside concrete easily generates microcrack, and fiber can pass through increase
Crack growth tortuosity, improves the energy of crack consumption, to reduce crack generation, in green planting roofing, can be improved
The waterproof performance of concrete, while increasing the obstruction power in root system of plant puncture process.
It is added to swelling agent in component, can inhibit crack at the beginning of concrete hydrating condensation hardening and after hardening
It generates.Wherein, azodicarbonamide plays crack caused by inhibiting volume contraction at the beginning of concrete hardening and generates, and magnesia is swollen
Swollen dose is played the effect for compensating volume contraction after the concrete has hardened.Therefore the additive that the present invention adds can take in concrete
The labour phase plays the role of that crack is inhibited to generate.
Water-absorbing resin is added in component, the ultra-fine hydroscopic high-molecular resin on the one hand can be after the concrete has hardened
Hydrated environment is constantly provided, to keep hardened paste constantly closely knit, while the microcrack generated can be provided by water-absorbing resin
Water and cement, copper ashes and cadmia reaction constantly provide hydrated product, play the effect of self-healing;In addition, selected ultra-fine water suction
Resin avoid conventional water absorbent resins it is excessive caused by hardened paste voidage it is higher, the drawbacks of weakening mechanical property.
It is added to copper ashes and cadmia in component, contains root resistance ingredient in above-mentioned Industrial Solid Waste, wherein the common work of copper and zinc
With having the effect of that good root resistance punctures;In addition, the active component in copper ashes and cadmia can be with hydrolysis product of cement hydroxide
Calcium reaction generates hydrated calcium silicate and drated calcium aluminate, improves the consistency of hardened paste.Both the effect of physics root resistance had been played,
Also play the effect of chemical root resistance.
The beneficial effects of the present invention are:
1. concrete of the present invention uses the Optimal Mix Design of poly modified component, have the effect of water-proofing anticracking,
Crack has the effect of self-healing under conditions of generating, simultaneously because the incorporation of fiber, has the effect of physics root resistance.
2. the Industrial Solid Waste of incorporation can dissolve solid waste, while copper therein and zinc have the effect of chemical root resistance, this
Outside, the component in copper ashes and cadmia can be obviously improved the compactness extent of concrete by pozzolanic reaction, effectively improve physics
The effect of root resistance.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, to help the present invention, but this hair is more fully understood
Bright protection scope is not limited to these embodiments.
Embodiment 1-5
By 250-300 parts of cement, 750-850 parts of sand, 1000-1100 parts of rubble, 2-5 parts of water-reducing agent, 10-30 parts of fiber,
15-35 parts of swelling agent, 1-5 parts of water-absorbing resin, 40-60 parts of copper ashes, cadmia 160-170 parts of water of 10-20 parts of incorporations are uniformly mixed, i.e.,
Cement mortar is obtained, each embodiment is raw materials used and mass ratio is shown in Table 1.
Table 1
GB/T 29417-2012 " cement mortar and concrete drying shrinkage cracking performance test method " according to national standards
Detect the shrinking percentage of concrete;
It is mixed according to the regulation of national standard GB/T50082 " normal concrete long-term behaviour and durability test method standard "
The solidifying impervious coefficient determination of soil;
28d intensity test is carried out according to national standard GB/T 17671-1999 Test method for strength of hydraulic cement mortar
The basic performance of normal concrete made from above-mentioned component are as follows: be shown in Table 2.
Table 2
To sum up, root resistance water-proof concrete of the invention can effectively prevent the puncture of root system of plant, impermeable, do not crack,
Theoretical service life and roof structure concrete service life are close.And it is designed using the green roof structure of material of the present invention
Simple process, short construction period have all saved cost from construction to later maintenance, have there is vast market prospect.
Claims (8)
1. a kind of self-healing anti-cracking waterproof root resistance concrete, which is characterized in that be made by the following raw material in parts by weight: water
250-300 parts of mud, 750-850 parts of sand, 1000-1100 parts of rubble, 2-5 parts of water-reducing agent, 10-30 parts of fiber, swelling agent 15-35
Part, 1-5 parts of water-absorbing resin, 40-60 parts of copper ashes, 10-20 parts of cadmia, 160-170 parts of water.
2. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the cement is common Portland
Cement.
3. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the area Sha Weizhong sand, rubble
For the microlith of 5-16mm.
4. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the water-reducing agent is polycarboxylic-acid
Water-reducing agent, aliphatic water reducing agent, how at least one of based water reducer, melamine water reducing agent.
5. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the fiber is steel fibre, virtue
At least one of synthetic fibre fiber, polypropylene fibre, glass fibre, basalt fibre, carbon fiber.
6. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the swelling agent is azo diformazan
The mixture of amide and magnesia, mixing quality ratio are 1:5.
7. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the water-absorbing resin be diameter >
The ultra-fine hydroscopic high-molecular resin of 250 mesh.
8. self-healing anti-cracking waterproof root resistance concrete as described in claim 1, it is characterised in that: the copper ashes is during copper metallurgy
The industrial residue of generation, copper content are not less than 0.5wt%, and average grain diameter is less than 10 μm;The cadmia is the waste residue for smelting zinc,
Average grain diameter is less than 10 μm, Zn content 0.5wt%-1wt%.
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109836081A (en) * | 2018-12-29 | 2019-06-04 | 苏州科技大学 | A kind of water-proofing anticracking armored concrete |
CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
CN110698153A (en) * | 2019-09-25 | 2020-01-17 | 北京城市之光生态环境有限公司 | Pavement crack-resistant concrete and application thereof in garden construction |
US20200317568A1 (en) * | 2019-04-04 | 2020-10-08 | Richard Bueble | Method for the Production of Portland Cement Composition with Low Embodied Energy and Carbon for Abrasion Resistant Concrete and Mortar |
CN112499996A (en) * | 2020-12-02 | 2021-03-16 | 中建西部建设新疆有限公司 | Preparation method of shrinkage-reducing copper slag concrete |
CN112939550A (en) * | 2021-04-13 | 2021-06-11 | 山东科技大学 | High-ductility cement-based composite material |
CN112939510A (en) * | 2021-01-29 | 2021-06-11 | 湖北工业大学 | Preparation method of anti-crack, self-healing and root-blocking functional additive for concrete |
CN113387652A (en) * | 2021-06-30 | 2021-09-14 | 西安建祥建材科技有限公司 | Anti-cracking anti-seepage self-repairing C35 mass concrete |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109836081A (en) * | 2018-12-29 | 2019-06-04 | 苏州科技大学 | A kind of water-proofing anticracking armored concrete |
CN109836081B (en) * | 2018-12-29 | 2021-08-24 | 苏州科技大学 | Waterproof anti-crack reinforced concrete |
US20200317568A1 (en) * | 2019-04-04 | 2020-10-08 | Richard Bueble | Method for the Production of Portland Cement Composition with Low Embodied Energy and Carbon for Abrasion Resistant Concrete and Mortar |
US11608293B2 (en) * | 2019-04-04 | 2023-03-21 | Richard Bueble | Method for the production of Portland cement composition with low embodied energy and carbon for abrasion resistant concrete and mortar |
CN110510932A (en) * | 2019-09-12 | 2019-11-29 | 深圳市奇信集团股份有限公司 | A kind of self-healing polymer cement waterproof paint and preparation method thereof |
CN110698153A (en) * | 2019-09-25 | 2020-01-17 | 北京城市之光生态环境有限公司 | Pavement crack-resistant concrete and application thereof in garden construction |
CN110698153B (en) * | 2019-09-25 | 2022-04-12 | 北京城市之光生态环境有限公司 | Pavement crack-resistant concrete and application thereof in garden construction |
CN112499996A (en) * | 2020-12-02 | 2021-03-16 | 中建西部建设新疆有限公司 | Preparation method of shrinkage-reducing copper slag concrete |
CN112939510A (en) * | 2021-01-29 | 2021-06-11 | 湖北工业大学 | Preparation method of anti-crack, self-healing and root-blocking functional additive for concrete |
CN112939510B (en) * | 2021-01-29 | 2022-02-25 | 湖北工业大学 | Preparation method of anti-crack, self-healing and root-blocking functional additive for concrete |
CN112939550A (en) * | 2021-04-13 | 2021-06-11 | 山东科技大学 | High-ductility cement-based composite material |
CN113387652A (en) * | 2021-06-30 | 2021-09-14 | 西安建祥建材科技有限公司 | Anti-cracking anti-seepage self-repairing C35 mass concrete |
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