CN105924055B - A kind of pervious concrete with long-acting high permeability - Google Patents
A kind of pervious concrete with long-acting high permeability Download PDFInfo
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- CN105924055B CN105924055B CN201610254658.4A CN201610254658A CN105924055B CN 105924055 B CN105924055 B CN 105924055B CN 201610254658 A CN201610254658 A CN 201610254658A CN 105924055 B CN105924055 B CN 105924055B
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- pervious concrete
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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
Abstract
There is long-term high permeability rate and the long-acting high permeability pervious concrete of high anti-clogging rate the invention provides a kind of, the pervious concrete includes the ash concrete that weight proportion is 12~15%, 75~80% coarse aggregate, 5~10% water corrosion inhibiter, 1~2% active admixture, 0.3~0.5% redispersable latex powder, 0.01~0.02% cellulose ether and 0.2~0.3% water reducer, its reclaimed water corrosion inhibiter is after particle diameter is well mixed for 5 8mm graininess alum and Si-P crystal in 1 ︰ 24 ratio, the mixture even application of VAE emulsions+cement+water is formed in particle surface again, coarse aggregate is the 15mm of particle diameter 5 rubble.The pervious concrete of the present invention, it is combined using water corrosion inhibiter with metakaolin come instead of part of coarse aggregates and cement, it ensure that the due intensity of concrete, and it is used as corrosion inhibiter by the use of bright vanadium and the widely different composition of two kinds of water solubilities of Si-P crystal, it is combined by the quick dissolving of bright vanadium with the slow mechanism dissolved of Si-P crystal, to obtain high Initial Air Void and lasting permeable effect.
Description
Technical field
The present invention relates to a kind of concrete, more particularly to a kind of pervious concrete, specifically relate to a kind of with long-term
The long-acting high permeability pervious concrete of high permeability rate and high anti-clogging rate.
Background technology
In recent years, with urbanization and the quickening of process of industrialization, high buildings and large mansions stand in great numbers, densely-populated, and ground is more
Covered, road surface permeable breathable extreme difference, after heavy rain or heavy rain, rainwater can not permeate in time, flow into by armored concrete
The water of sewer increased dramatically, and cause city ponding serious, or even form waterlogging, and this has not only broken up original ecological ring
Border, and have a strong impact on health and the traffic in city.Frequent visible domestic many big cities were because in heavy rain generation in recent years
Flood and the report for the startling event such as cause people's lives and properties to sustain losses severely.
With the enhancing of people's environmental consciousness, the concept in sponge city has been suggested.So-called sponge city, is exactly city energy
Enough as sponge, there is " elasticity " well, namely energy when rainy in terms of environmental change and reply natural calamity is adapted to
Water suction, retaining, infiltration, water purification, it is necessary to when by the water stored " release " and can be used.Build sponge city most critical
Any is that road surface must use pervious concrete.
Pervious concrete is a kind of ecological environment-friendly type concrete, and it is selected by material, and matched somebody with somebody using single level
Aggregate, makes concrete have continuous hole, so as to obtain good rain penetration effect.With the permeable mixed of interconnected pore up and down
Solidifying soil can be effectively improved the circulation of water above and below the heat balance of earth's surface, enhancing earth's surface, increase city groundwater resources, alleviate heat island
Effect, improvement urban climate have great importance, but from the point of view of the applicable cases of current pervious concrete, the greatest problem existed
It is that initial permeable effect is good, but over time, silt, dust, rubbish for being brought into through rain drop erosion etc. can be blocked gradually
The firmly hole of pervious concrete, makes it lose infiltration effect, and this phenomenon is the vegetation such as park are more, personnel's comparatively dense region
It is especially apparent, typically 2 to three years road surfaces just lose the permeable function that seeps water completely.For this phenomenon, what is solved at present does
Method one is to use giant periodic flushing, but this method can only remove the silt, dust and rubbish of concrete surface, to the inside
Hole do not work, it is final or permeable continuation can not be ensured, and flushing repeatedly easily makes pervious concrete surface
Rubble peel off；Two be that using renovating again after rooting out, this method is uneconomical, while can also produce a large amount of building wastes.
The content of the invention
The problem of to exist more than solving, it is an object of the invention to provide one kind there is high initial porosity and height to continue hole
The long-acting high permeability pervious concrete of gap rate.
To realize object above, the pervious concrete with long-acting high permeability of the invention, including following component and Chong amounts Pei Bi ︰
Ash concrete 12~15%
Coarse aggregate 74~80%
Water corrosion inhibiter 4.5~10%
Active admixture 0.9~2%
Redispersable latex powder 0.3~0.5%
Cellulose ether 0.01~0.02%
Water reducer 0.15~0.3%
Its reclaimed water corrosion inhibiter is to be well mixed by particle diameter for 5-8mm graininess alum and Si-P crystal in 1 ︰ 2-4 ratio
Afterwards, then by the mixture even application of VAE emulsions+cement+water formed in particle surface, coarse aggregate size is broken for 5-15mm's
Stone.
Not deliquescence, non-efflorescing cementitious when being deposited in order to ensure water corrosion inhibiter, while it is easy to the dissolving of water corrosion inhibiter again, above-mentioned alum
The rate of charge preferably 1 ︰ 0.12-0.14 of+Si-P crystal and VAE emulsions+cement+water.
The weight ratio of above-mentioned VAE emulsions, cement and water preferably 2 ︰ 0.5-1.5 ︰ 6-8.
The portland cement that preferably 42.5 or 52.5 grades of above-mentioned ash concrete.
In order to improve the intensity of product, above-mentioned active spike preferable particle size≤1.3um's has the inclined of high pozzolanic activity
Kaolin.
In order to more preferably strengthen the interfacial effect between coarse aggregate and powder, above-mentioned redispersable latex powder, optimal ethylene-vinegar
Sour ethylene copolymer.
In order to more preferably improve the workability and encapsulation of slurry, above-mentioned cellulose ether preferred viscosities are 30000-
100000cps hydroxypropyl methyl cellulose ether.
More preferably to improve the compression strength of product, the above-mentioned preferred naphthalene sulfonate of water reducer, sulfonated melamine or polycarboxylic acids
Salt.
The long-acting high permeability pervious concrete of the present invention, is combined come thick instead of part using water corrosion inhibiter with metakaolin
Aggregate and cement, it is ensured that the due intensity of concrete, and utilize bright vanadium and the widely different group of two kinds of water solubilities of Si-P crystal
Compound is combined as corrosion inhibiter by the quick dissolving of bright vanadium with the slow mechanism dissolved of Si-P crystal, to obtain high initial void
Rate and lasting permeable effect.Bright vanadium and Si-P crystal self-strength height, neat appearance, particle diameter and rubble are close, 5-8mm particle diameters it is bright
Vanadium can be completely dissolved in the circulating water of about 6 hours, when rainwater is penetrated into by pervious concrete, can quickly dissolve water
The bright vanadium in part in corrosion inhibiter, makes inside concrete form continuous regular larger hole, so as to obtain than common permeable coagulation
The higher initial effective porosity of soil, is conducive to the infiltration of rainwater, can more make the debris such as silt, the dust of larger particles with dampening
Stream outflow, so as to reduce the blocked possibility in space；And Si-P crystal performance is stable, only ability slow mechanism dissolved, particle diameter in circulating water
5-8mm Si-P crystal usually requires just be completely dissolved in the long-term circulating water of 12 months, with very long incubation period, when
When rainwater flows through, the hole produced by Si-P crystal slow mechanism dissolved further increases effectively continuous hole, it is ensured that permeability rate begins
Higher level is maintained at eventually, reaches the effect of reduction plug-hole.The pervious concrete of the present invention, with good permeable breathable
And compression strength, and raw material prepare relatively simple, are conducive to promoting the use of.
Embodiment
Here is the specific embodiment of the present invention, and these embodiments are simply matched somebody with somebody to the long-acting high permeability pervious concrete of the present invention
Side is illustrated with preparation process, and is not used to limit the scope of the invention.
The Bei ︰ processed of corrosion inhibiter
The granular alum of 5-8mm and 5-8mm Si-P crystal is selected to be well mixed in 1 ︰ 2 ratio, by VAE emulsions+water
Mud+water, in particle surface, is made the diaphragm of particle surface formation layer, obtained by the mixed liquor even application of the ︰ 7 of 2 ︰ 1 formation
To not deliquescence, non-efflorescing cementitious during storage, while be conducive to improving the water corrosion inhibiter of interface interaction, it is stand-by.
Embodiment
1st, it is formulated（Dan Wei ︰ Kg）
2nd, prepare
Each raw material is well mixed by above-mentioned formula, the water of concrete total amount 35% is added, using forced mixer scene
Stirring, obtains pervious concrete.
3rd, performance test
（1）By pervious concrete sample made from above-mentioned each formula after standard curing again through flow velocity be 0.6-0.7/m3's
Flowing water is conserved 6 hours, according to CJJ/T135-2009《Water-permeable cement concrete pavement technique code》Standard is to each sample progressive
Can test, measure result and for example Xia ︰
It is can be seen that from the testing result in upper table because sample uses curing in water, with the addition of water corrosion inhibiter sample
Water penetration has with continuous porosity significantly to be improved, and its intensity decreases is not obvious, and wanting for C20 ranks can be met completely
Ask.
（2）Pervious concrete sample made from above-mentioned each formula is all placed in outdoor pavement 1 year（Wuhan 2015
Year:Number of days rain between -149 days 128 days, precipitation is between 1411.4 millimeters -1565.9 millimeters）, according to CJJ/T135-
2009《Water-permeable cement concrete pavement technique code》Its properties of standard testing, measure result and for example Xia ︰
It is can be seen that from the testing result of upper table by outdoor rain drop erosion in 1 year, the water penetration of traditional sample and company
Continuous porosity is greatly reduced, and water corrosion inhibiter volume is when being 5%, and the water penetration after one year is with continuous porosity also than common examination
Sample is much higher, at the same intensity and be not apparent from reduction.
The pervious concrete of the present invention is able to ensure that water penetration is maintained at higher level with continuous porosity, reaches reduction
The effect of blocking；Although the cost of water corrosion inhibiter is much higher compared to rubble, during because of addition for 5-10%, you can obtain non-
Normal obvious effect, from a cost perspective, water corrosion inhibiter improve the first current cost of pervious concrete, but its functional period makes
Greatly improved with the life-span, reduce maintenance cost, its final integrated cost is not significantly improved, is fully able to promote the use of.
Claims (8)
1. a kind of pervious concrete with long-acting high permeability, including following component and weight proportion：
Ash concrete 12~15%
Coarse aggregate 75~85%
Water corrosion inhibiter 5~10%
Active admixture 1~2%
Redispersable latex powder 0.3~0.5%
Cellulose ether 0.01~0.02%
Water reducer 0.2~0.3%
The Si-P crystal that the graininess alum and particle diameter that it is 5-8mm by particle diameter that its reclaimed water corrosion inhibiter, which is, are 5-8mm in 1 ︰ 2-4 ratio
After well mixed, then the mixture even application of VAE emulsions+cement+water formed in particle surface, coarse aggregate is particle diameter 5-
15mm rubble.
2. the pervious concrete according to claim 1 with long-acting high permeability, it is characterised in that：The alum+silicon phosphorus
The brilliant rate of charge with VAE emulsions+cement+water is 1 ︰ 0.12-0.14.
3. the pervious concrete according to claim 2 with long-acting high permeability, it is characterised in that：The VAE emulsions, water
The weight ratio of mud and water is 2 ︰ 0.5-1.5 ︰ 6-8.
4. the pervious concrete according to claim 3 with long-acting high permeability, it is characterised in that：The ash concrete is
42.5 or 52.5 grades of portland cements.
5. the pervious concrete according to claim 4 with long-acting high permeability, it is characterised in that：The active spike is
Particle diameter≤1.3um the metakaolin with high pozzolanic activity.
6. the pervious concrete according to claim 5 with long-acting high permeability, it is characterised in that：The redispersible breast
Rubber powder is ethylene-vinyl acetate copolymer.
7. the pervious concrete according to claim 6 with long-acting high permeability, it is characterised in that：The cellulose ether is
Viscosity 30000-100000cps hydroxypropyl methyl cellulose ether.
8. the pervious concrete according to claim 7 with long-acting high permeability, it is characterised in that：The water reducer is naphthalene
Sulfonate, sulfonated melamine or polycarboxylate.
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| CN201610254658.4A CN105924055B (en) | 2016-04-22 | 2016-04-22 | A kind of pervious concrete with long-acting high permeability |
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| CN105924055B true CN105924055B (en) | 2017-10-13 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106587833A (en) * | 2016-12-13 | 2017-04-26 | 河池永固混凝土有限责任公司 | Pervious concrete |
| CN106830824A (en) * | 2017-01-18 | 2017-06-13 | 郑州春晟装饰新材料科技股份有限公司 | A kind of water-permeable brick is mated formation with permeable bonding leveling mortar |
| CN106673475B (en) * | 2017-01-19 | 2018-01-30 | 天津沃佰艾斯科技有限公司 | A kind of porous fibre cotton substrate and its preparation method and application |
| CN108529933B (en) * | 2017-03-06 | 2021-02-09 | 北京城建银龙混凝土有限公司 | Pervious concrete |
| CN107098632A (en) * | 2017-06-06 | 2017-08-29 | 湖南三恒建设园林工程有限公司 | High-performance environment-friendly ecotype pervious concrete |
| CN109095844A (en) * | 2017-06-21 | 2018-12-28 | 防城港市明隆辉混凝土有限公司 | Efficient water storage permeable concrete |
| CN108101445A (en) * | 2017-11-29 | 2018-06-01 | 贵州省材料产业技术研究院 | The method that high permeability rate permeable terrace is prepared using molten circulation method |
| CN108069643A (en) * | 2017-11-29 | 2018-05-25 | 贵州省材料产业技术研究院 | Using method of the water-soluble granular as the circulation high permeability rate terrace of material preparation |
| CN109265108B (en) * | 2018-11-02 | 2020-12-01 | 嘉华特种水泥股份有限公司 | Water-purifying ecological concrete and preparation method thereof |
| CN110627447A (en) * | 2019-10-22 | 2019-12-31 | 深圳市信泰工业自动化设备有限公司 | Pervious concrete sewage filtering device and method thereof |
| CN112851218B (en) * | 2021-01-29 | 2022-05-24 | 桐庐宏基源混凝土有限公司 | Preparation method of energy-saving environment-friendly high-strength fast-permeable concrete |
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| US5931773A (en) * | 1995-06-09 | 1999-08-03 | Entact, Inc. | Method for treatment of solid waste to minimize permeability of the waste |
| CN102850077A (en) * | 2012-08-21 | 2013-01-02 | 西南科技大学 | Method for producing sludge-based ecological concrete product |
| CN103641411B (en) * | 2013-12-03 | 2016-08-17 | 西南科技大学 | A kind of method utilizing sludge-bentonite base material to prepare telescopic-pore ecological concrete |
| CN103910821B (en) * | 2014-03-14 | 2016-08-17 | 中科院广州化学有限公司南雄材料生产基地 | A kind of high pressure resistant water penetration porous material and preparation method thereof |
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