CN109626911A - A kind of pervious concrete and preparation method thereof with lasting water purification function - Google Patents
A kind of pervious concrete and preparation method thereof with lasting water purification function Download PDFInfo
- Publication number
- CN109626911A CN109626911A CN201910069460.2A CN201910069460A CN109626911A CN 109626911 A CN109626911 A CN 109626911A CN 201910069460 A CN201910069460 A CN 201910069460A CN 109626911 A CN109626911 A CN 109626911A
- Authority
- CN
- China
- Prior art keywords
- pervious concrete
- water
- light
- weight aggregate
- water purification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
-
- 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
- C04B2111/40—Porous or lightweight 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
Abstract
The invention discloses a kind of pervious concrete and preparation method thereof with lasting water purification function.The pervious concrete is made of chitosan, inorganic coagulation material, light-weight aggregate, additive and water；Pervious concrete described in every cubic metre includes 300~500kg/m3The inorganic coagulation material, 400~800kg/m3The light-weight aggregate and 90kg~250kg/m3The water；The quality of the chitosan is the 0.1%~10% of inorganic coagulation material quality.Aggregate ingredient of the present invention uses light-weight aggregate, high, the porous feature using light-weight aggregate water absorption rate, light-weight aggregate is not prewetted simultaneously, and the water absorption rate matching relationship that gathers materials with cementitious material between the two of researching and designing, so that the polluters such as heavy metal ion of surface slurry absorption pass through the transfer of moisture or the migration of ion, the light-weight aggregate of internal porous is transferred to by surface slurry, detergent power has obtained significant enhancing, and has the function of lasting water purification.
Description
Technical field
The present invention relates to concrete fields, and in particular to a kind of pervious concrete and its preparation with lasting water purification function
Method.
Background technique
In recent years, with the irregular variation of amblent air temperature, the problems such as urban waterlogging, tropical island effect, becomes increasingly tighter
Weight, simultaneous increased population, the exploitation to cienega cordless degree, this makes the highly desirable transformation Urban Underground of people
Aquaporin, and rainwater outflow and recharge of groundwater resource are limited, it denounces so that fluid-tight concrete road surface is increasingly behaved.This
When, become the optimal path of solution and the direction of China's construction of future cities using pervious concrete.Rainwater is logical simultaneously
The pore structure for crossing pervious concrete directly penetrates into soil, into lithic drainage, this can recharge of groundwater, can also alleviate
Rainwash.But itself also contains some polluters in rainwater, it, will polluted underground water resource if handled not in time.
Good catharsis is played to rainwater this requires pervious concrete needs to have, reduces non-point pollution.
Pervious concrete has good water purification characteristic, and main function shows as adsorbing, when rain pollutant in water with
When seeping under pervious concrete pore channel, due to suction-operated, polluter (such as heavy metal ion) can be adsorbed to permeable
In the layer of slurry of the inner surface of concrete pore.However, suction-operated and its internal void of the pervious concrete to polluter
Effective adsorption area of surface slurry is proportional, with the increase of rainwater infiltration number, the hole inner wall of pervious concrete
Finite surface area, slurry surface is easily absorbing saturation, so that the conversion characteristic of pervious concrete be made to be gradually reduced even
Detergent power is lost, so that it becomes the common porous pavement without detergent power.How the lasting water purification of pervious concrete is extended
Ability becomes a problem instantly urgently to be resolved.
Summary of the invention
The present invention provides a kind of pervious concrete with lasting water purification function and preparation to solve above-mentioned technical problem
Method.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of pervious concrete with lasting water purification function, the pervious concrete is by chitosan, inorganic gel material
Material, light-weight aggregate, additive and water composition；Pervious concrete described in every cubic metre includes 300~500kg/m3It is described inorganic
Cementitious material and 400~800kg/m3The light-weight aggregate and 90~250kg/m3The water；The quality of the chitosan is nothing
The 0.1%~10% of machine cementitious material quality.
In above scheme, the chitosan be carboxymethyl chitosan, N- carboxymethyl chitosan, O-CMC or N,
The mixing of one or more of O-CMC arbitrary proportion.
In above scheme, the inorganic coagulation material is appointed for one or both of portland cement or sulphate aluminium cement
The mixing of meaning ratio.
In above scheme, the light-weight aggregate is one or more of haydite, float stone, scoria or expanded slag pearl
The mixing of arbitrary proportion.
In above scheme, the haydite is one of leca, lytag, red mud porcelain granule or coal gangue haydite
Or the mixing of two or more arbitrary proportions.
In above scheme, the additive is made of water-reducing agent, tackifier and early strength agent, and the dosage of the additive is
The 0.4%~2.0% of chitin modified inorganic coagulation material quality.
In above scheme, the additive by the water-reducing agent of 30~60wt%, the tackifier of 10~30wt% and 20~
The early strength agent of 40wt% forms.
In above scheme, the water-reducing agent is lignin sulfonic acid sodium salt water-reducing agent, naphthalene water reducer, amino water-reducing agent or poly-
The mixing of one or more of carboxylic acid water reducer arbitrary proportion.
In above scheme, the tackifier are one of cellulose ether, natural rubber, propylene class lotion or polyvinyl alcohol
Or the mixing of two or more arbitrary proportions.
In above scheme, the early strength agent is the mixed of one or more of triethanolamine, calcium formate arbitrary proportion
It closes.
The preparation method that there is the pervious concrete for continuing water purification function, which comprises the following steps:
1) in agitating device, the chitosan, inorganic coagulation material are mixed evenly, mixing time is not less than
30s prepares chitin modified inorganic coagulation material；
2) then the light-weight aggregate is added in chitin modified inorganic coagulation material, is mixed, stirs 1min
Then the water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；
3) it discharges after the completion of stirring, layer-by-layer distribution vibration presses or plugs and pounds molding, and the pervious concrete is obtained after maintenance.
In above scheme, the water absorption rate of the light-weight aggregate is greater than the water absorption rate of chitin modified inorganic coagulation material.
In above scheme, light-weight aggregate keeps dry state before mixing, and its water content is no more than light-weight aggregate quality
1%.
In the present invention, chitosan is a kind of organic substance with good adsorption effect, and chitosan, which is added, to be enhanced
The absorption property of inorganic coagulation material slurry, and its is low in cost, but since chitosan is not readily dissolved in water and acid solution, because
This has selected the derivative-carboxymethyl chitosan and its derivative of chitosan, it has good water-soluble and green environmental protection,
More powerful adsorptivity etc..
In the present invention, light-weight aggregate is that one or more of haydite, float stone, scoria, expanded slag pearl are any
The mixing of ratio.Compared with the aggregate of previous pervious concrete, the present invention uses light-weight aggregate, it has light, porous and inhales
The high feature of water rate.When rainwater passes through pervious concrete pavement, rainwater penetrates into ground by the pore channel of pervious concrete
Under, while the polluters such as heavy metal ion present in water can be adsorbed by the slurry of hole inner wall.The surface slurry that rainwater impregnates
The humidity of body is generally higher than the humidity gathered materials inside it, simultaneously because the water absorption rate of light-weight aggregate is higher, thus promote moisture by from
The high position of the humidity position transfer low to humidity, then on the polluters such as heavy metal ion carried in moisture and hole inner wall
The polluter of slurry attachment can also be shifted to light-weight aggregate；In addition, the humidity when surface slurry is consistent with the humidity that inside gathers materials
When, according to diffusion theory, the concentration of the polluters such as adsorbed heavy metal ion of surface slurry is higher than in internal light-weight aggregate
The pollutants such as heavy metal ion also concentration, the polluters such as heavy metal ion can be from high concentration region to low concentration region
Domain transfer, i.e., equally can be from surface slurry to light-weight aggregate and interior shifting.The polluters such as the heavy metal ion by surface are from table
Starch adhesive body is stored into internal porous light-weight aggregate, this can all make the slurry surface with characterization of adsorption restore its suction again
Attached characteristic, improves the detergent power of pervious concrete, to realize pervious concrete to the sustainable net of pollutant
Change function.It is emphasized that existing between the chitin modified inorganic coagulation material in the present invention and the water absorption rate of light-weight aggregate
Matching relationship, light-weight aggregate water absorption rate need to be greater than chitin modified inorganic coagulation material water absorption rate.This is this patent successful one
Key point, according to adsorption theory and diffusion theory, only when the water absorption rate of light-weight aggregate is greater than chitin modified inorganic coagulation material
Water absorption rate, could make adsorption substance ecto-entad migrate, thus obtain have continue water purification function permeable coagulation
Soil.
In the present invention, light-weight aggregate keeps dry state before mixing, does not absorb water or prewets in advance.This is also this patent
An innovative point, tradition uses the concrete of light-weight aggregate, and light-weight aggregate will first prewet, and otherwise concrete water amount can be made excessive；
But this patent is not prewetted, and light-weight aggregate itself has good water absorption rate, using the light-weight aggregate that do not prewet, improves internal light-weight aggregate
Water suction carrying capacity and surface slurry and internal light-weight aggregate psychrometric difference, the heavy metal ion etc. for having promoted surface slurry to adsorb
Polluter with moisture internally light-weight aggregate transfer.
Compared with prior art, the invention has the benefit that
1. using chitin modified inorganic coagulation material, chitosan is utilized with good adsorptivity, using its modification
Inorganic coagulation material significantly improves the characterization of adsorption of slurry.
2. aggregate ingredient uses light-weight aggregate, high, the porous feature using light-weight aggregate water absorption rate, while light-weight aggregate is not prewetted,
And the water absorption rate matching relationship that gathers materials with cementitious material between the two of researching and designing so that the heavy metal of surface slurry absorption from
The polluters such as son are transferred to the light-weight aggregate of internal porous by surface slurry by the transfer of moisture or the migration of ion, are purified
Ability has obtained significant enhancing, and has the function of lasting water purification.
Detailed description of the invention
Fig. 1 is the water purification test device of pervious concrete.
Wherein, 1- inlet, 2- storage cylinder of water, 3- overflow sink；4- collecting tank；5- liquid outlet.
Specific embodiment
Specific embodiment is only explanation of the invention, further describes this hair referring to specific embodiment
Bright, so that those skilled in the art's refer to the instruction text can be implemented accordingly, the scope of the present invention is not limited to this hair
Bright embodiment.
Comparative example 1
The comparative example provides a kind of common pervious concrete: 400kg/m3Ordinary portland cement, 1400kg/m3It is broken
Stone coarse aggregate, 160kg/m3Water, 4kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent, 0.8kg/m3Tackifier and 1.6kg/m3
Early strength agent.
The water-reducing agent is lignin sulfonic acid sodium salt water-reducing agent；The tackifier are cellulose ether；Described is early strong
Agent is triethanolamine.
Common pervious concrete preparation: in agitating device, by the carboxymethyl chitosan and normal silicate water
Mud stirring, mixing time are not less than 30s, and rubble coarse aggregate is then added and is mixed evenly, stirs 1min；By the water and outside
Add agent to be mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；It discharges after the completion of stirring, layering
Charging vibration pressure plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, after being put into fog room maintenance 28 days, finally obtains pervious concrete.
Comparative example 2
The comparative example provides a kind of pervious concrete (weight) with lasting water purification function: 400kg/m3Normal silicate
Cement, 750kg/m3Spheroidal lytag, 160kg/m3Water, 4kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent,
0.8kg/m3Tackifier and 1.6kg/m3Early strength agent.
According to GB/T17431.1-1998 " light-weight aggregate and its experimental method ", the suction for 24 hours of spheroidal lytag is measured
Water rate is 2.1%, and the water absorption rate for 24 hours of chitin modified ordinary portland cement slurry is 6.2%, it is known that light-weight aggregate water absorption rate is small
In slurry.
The water-reducing agent is lignin sulfonic acid sodium salt water-reducing agent；The tackifier are cellulose ether；Described is early strong
Agent is triethanolamine.
Pervious concrete preparation with lasting water purification function: in agitating device, by the carboxymethyl chitosan with
Ordinary portland cement stirring, mixing time are not less than 30s, and spheroidal lytag is then added and is mixed evenly, stirs
Mix 1min；The water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；
It discharges after the completion of stirring, layer-by-layer distribution vibration presses or plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, fog room is put into, after maintenance 28 days
Finally obtain pervious concrete.
Comparative example 3
The comparative example provides a kind of pervious concrete (weight) with lasting water purification function: 400kg/m3Normal silicate
Cement, 750kg/m3Gravel haydites of book structure, 160kg/m3Water, 4kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent, 0.8kg/m3
Tackifier and 1.6kg/m3Early strength agent.
According to GB/T17431.1-1998 " light-weight aggregate and its experimental method ", the water suction for 24 hours of gravel haydites of book structure is measured
Rate is 6.0%, and the water absorption rate for 24 hours of chitin modified ordinary portland cement is 6.2%.The water absorption rate for obtaining light-weight aggregate is approximately equal to
Slurry.
Pervious concrete preparation with lasting water purification function: in agitating device, by the carboxymethyl chitosan with
Ordinary portland cement stirring, mixing time are not less than 30s, and gravel haydites of book structure is then added and is mixed evenly, stirs
1min；The water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；It stirs
It discharges after the completion of mixing, layer-by-layer distribution vibration presses or plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, is put into fog room, after maintenance 28 days most
Pervious concrete is obtained eventually.
Embodiment 1
The present embodiment provides a kind of pervious concrete (weight) with lasting water purification function: 400kg/m3Normal silicate
Cement, 750kg/m3Pillared clays haydite, 160kg/m3Water, 4kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent, 0.8kg/m3Increase
Stick and 1.6kg/m3Early strength agent.
According to GB/T17431.1-1998 " light-weight aggregate and its experimental method ", the water absorption rate for 24 hours of pillared clays haydite is measured
It is 19.6%, the water absorption rate for 24 hours of chitin modified ordinary portland cement is 6.2%.The water absorption rate for obtaining light-weight aggregate is greater than slurry
Body.
Pervious concrete preparation with lasting water purification function: in agitating device, by the carboxymethyl chitosan with
Ordinary portland cement stirs mixing time and is not less than 30s, and pillared clays rock ceramic granule is then added and is mixed evenly, stirs
1min；The water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；It stirs
It discharges after the completion of mixing, layer-by-layer distribution vibration presses or plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, is put into fog room, after maintenance 28 days most
Pervious concrete is obtained eventually.
Embodiment 2
The present embodiment provides a kind of pervious concrete (weight) with lasting water purification function: 300kg/m3Normal silicate
Cement, 400kg/m3Pillared clays haydite, 90kg/m3Water, 3kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent, 0.8kg/m3Part
Tackifier and 1.6kg/m3Early strength agent.
According to GB/T17431.1-1998 " light-weight aggregate and its experimental method ", the water absorption rate for 24 hours of pillared clays haydite is measured
It is 19.6%, the water absorption rate for 24 hours of chitin modified ordinary portland cement is 6.2%.The water absorption rate for obtaining light-weight aggregate is greater than slurry
Body.
Pervious concrete preparation with lasting water purification function: in agitating device, by the carboxymethyl chitosan with
Ordinary portland cement stirring, mixing time are not less than 30s, and pillared clays haydite is then added and is mixed evenly, stirs
1min；The water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；It stirs
It discharges after the completion of mixing, layer-by-layer distribution vibration presses or plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, is put into fog room, after maintenance 28 days most
Pervious concrete is obtained eventually.
Embodiment 3
The present embodiment provides a kind of pervious concrete (weight) with lasting water purification function: 500kg/m3Normal silicate
Cement, 800kg/m3Pillared clays haydite, 250kg/m3Water, 5kg/m3Carboxymethyl chitosan, 2kg/m3Water-reducing agent, 0.8kg/m3Part
Tackifier and 1.6kg/m3Early strength agent.
According to GB/T17431.1-1998 " light-weight aggregate and its experimental method ", the water absorption rate for 24 hours of pillared clays haydite is measured
It is 19.6%, the water absorption rate for 24 hours of chitin modified ordinary portland cement is 6.2%.The water absorption rate for obtaining light-weight aggregate is greater than slurry
Body.
Pervious concrete preparation with lasting water purification function: in agitating device, by the carboxymethyl chitosan with
Ordinary portland cement stirring, mixing time are not less than 30s, and pillared clays rock ceramic granule is then added and is mixed evenly, stirs
1min；The water and additive are mixed to join in agitating device, it is sufficiently stirred, mixing time is not less than 2min；It stirs
It discharges after the completion of mixing, layer-by-layer distribution vibration presses or plugs and pounds molding, demoulds afterwards for 24 hours at room temperature, is put into fog room, after maintenance 28 days most
Pervious concrete is obtained eventually.
Configuration concentration is the lead ion solution of 0.01mol/L, by the sample and embodiment of above-mentioned comparative example 1 to comparative example 3
1,2,3 samples are individually placed to device as shown in Figure 1.Laboratory operating procedures are that test specimen surrounding is spread sealing material or butter fills
Enter in metal sleeve (note: test specimen upper and lower surface cannot contact sealing material), is put into vacuum plant after waiting sealing materials to solidify
It is interior, after being kept for the regular hour, it is put into overflow sink 3, then storage cylinder of water 2 injects heavy metal solution, heavy metal by inlet 1
Lead ion solution by pervious concrete test specimen, under infilter into collecting tank 4, collect filtered solution in liquid outlet 5, survey its from
Sub- concentration obtains solution residual concentration.Carry out loop test.When every group of test, sample is remained unchanged, and every time after circulation,
Replacement lead ion solution is constant to guarantee the initial concentration always for recycling beginning lead ion solution every time, and it is whole to measure each solution
After sample, the concentration of heavy metal ion in the solution of lower section, so that heavy metal solution concentration drops after circulation every time is calculated
Low rate (%), if depletion factor remains unchanged (or being basically unchanged), illustrates permeable coagulation with the increase of cycle-index
There is soil sustainable water purification function to illustrate that its water purification function gradually fails if depletion factor gradually decreases.Test data
It is listed in the table below:
As shown above, the sample done according to the present invention, increase of the embodiment 1,2 and 3 with cycle-index, purification
Ion decline concentration amplitude totally remain unchanged, illustrate with pervious concrete designed by the present invention have continue water purification function
Energy.The common blank sample of comparative example 1 and comparative example 2 and 3, with the increase of cycle-index, Pb in solution after recycling every time2+Ion
The trend gradually weakened is presented in the reduction amplitude of concentration, illustrates its absorption heavy metal ion of the pervious concrete of comparative example 1,2 and 3
The abilities such as equal pollutants gradually weaken, and do not have the function of sustainable purification, this and water absorption rate matching relationship described in this patent
Corresponding, the water absorption rate just to gather materials as designed is greater than the water absorption rate of surface slurry.
To the disclosed embodiments and above description, professional and technical personnel in the field is made to can be realized or use this hair
It is bright.All the equivalent structure or equivalent process transformation made by using the contents of the present specification, are applied directly or indirectly in it
His relevant technical field, is included in scope of patent protection of the invention.Therefore, the present invention is not intended to be limited to herein
Shown in these embodiments, and be to fit to the widest scope consistent with principles disclosed herein and feature.
Claims (10)
1. a kind of pervious concrete with lasting water purification function, which is characterized in that the pervious concrete is by chitosan, nothing
Machine cementitious material, light-weight aggregate, additive and water composition；Pervious concrete described in every cubic metre includes 300~500kg/m3's
The inorganic coagulation material, 400~800kg/m3The light-weight aggregate and 90kg~250kg/m3The water；The chitosan
Quality be inorganic coagulation material quality 0.1%~10%.
2. according to claim 1 have the pervious concrete for continuing water purification function, which is characterized in that the chitosan is
Carboxymethyl chitosan, N- carboxymethyl chitosan, O-CMC or N, one or both of O-CMC with
The mixing of upper arbitrary proportion.
3. according to claim 1 have the pervious concrete for continuing water purification function, which is characterized in that the inorganic gel
Material is the mixing of one or both of portland cement or sulphate aluminium cement arbitrary proportion.
4. according to claim 1 have the pervious concrete for continuing water purification function, which is characterized in that the light-weight aggregate is
The mixing of one or more of haydite, float stone, scoria or expanded slag pearl arbitrary proportion.
5. according to claim 4 have the pervious concrete for continuing water purification function, which is characterized in that the haydite is viscous
The mixing of one or more of native haydite, lytag, red mud porcelain granule or coal gangue haydite arbitrary proportion.
6. it is according to claim 1 have continue water purification function pervious concrete, which is characterized in that the additive by
Water-reducing agent, tackifier and early strength agent composition, the dosage of the additive are chitin modified inorganic coagulation material quality
0.4%~2.0%.
7. according to claim 6 have the pervious concrete for continuing water purification function, which is characterized in that described plus agent is by 30
The early strength agent of the water-reducing agent of~60wt%, the tackifier of 10~30wt% and 20~40wt% forms.
8. the preparation method with the pervious concrete for continuing water purification function according to any one of claims 1 to 7, special
Sign is, comprising the following steps:
1) in agitating device, the chitosan, inorganic coagulation material are mixed evenly, mixing time is not less than 30s,
Prepare chitin modified inorganic coagulation material；
2) then the light-weight aggregate is added in chitin modified inorganic coagulation material, stirring；Then by the water and additive
It is mixed to join in agitating device, it is sufficiently stirred；
3) it discharges after the completion of stirring, layer-by-layer distribution vibration presses or plugs and pounds molding, and the pervious concrete is obtained after maintenance.
9. the preparation method with the pervious concrete for continuing water purification function according to claim 8, which is characterized in that institute
The water absorption rate for stating light-weight aggregate is greater than the water absorption rate of chitin modified inorganic coagulation material.
10. the preparation method with the pervious concrete for continuing water purification function according to claim 8, which is characterized in that
Step 2) light-weight aggregate keeps dry state before addition, and its water content is no more than the 1% of light-weight aggregate quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069460.2A CN109626911B (en) | 2019-01-24 | 2019-01-24 | Pervious concrete with continuous water purification function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069460.2A CN109626911B (en) | 2019-01-24 | 2019-01-24 | Pervious concrete with continuous water purification function and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109626911A true CN109626911A (en) | 2019-04-16 |
| CN109626911B CN109626911B (en) | 2021-07-20 |
Family
ID=66063539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910069460.2A Active CN109626911B (en) | 2019-01-24 | 2019-01-24 | Pervious concrete with continuous water purification function and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109626911B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950612A (en) * | 2019-12-25 | 2020-04-03 | 成都新豪鼎盛建材有限公司 | Colored pervious concrete and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09206523A (en) * | 1996-02-07 | 1997-08-12 | Kanemitsu:Kk | Concrete block for water purification |
| CN105439609A (en) * | 2015-11-11 | 2016-03-30 | 合肥李诺新材料贸易有限公司 | Long-acting antibacterial sand-based water permeable brick and manufacture method thereof |
| CN107021693A (en) * | 2017-06-02 | 2017-08-08 | 重庆大学 | It is a kind of can water purification pervious concrete preparation method |
| CN107902987A (en) * | 2017-11-07 | 2018-04-13 | 扬州大学 | Decontamination pervious concrete and preparation method |
-
2019
- 2019-01-24 CN CN201910069460.2A patent/CN109626911B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09206523A (en) * | 1996-02-07 | 1997-08-12 | Kanemitsu:Kk | Concrete block for water purification |
| CN105439609A (en) * | 2015-11-11 | 2016-03-30 | 合肥李诺新材料贸易有限公司 | Long-acting antibacterial sand-based water permeable brick and manufacture method thereof |
| CN107021693A (en) * | 2017-06-02 | 2017-08-08 | 重庆大学 | It is a kind of can water purification pervious concrete preparation method |
| CN107902987A (en) * | 2017-11-07 | 2018-04-13 | 扬州大学 | Decontamination pervious concrete and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 高原主编: "《图文精解建筑工程施工职业技能系列 混凝土工》", 31 January 2017, 中国计划出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110950612A (en) * | 2019-12-25 | 2020-04-03 | 成都新豪鼎盛建材有限公司 | Colored pervious concrete and preparation process thereof |
| CN110950612B (en) * | 2019-12-25 | 2021-07-16 | 成都新豪鼎盛建材有限公司 | Colored pervious concrete and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109626911B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107140902B (en) | A kind of permeable foam concrete and preparation method thereof | |
| CN106167380A (en) | A kind of iron tailings anti-block water permeable concrete road surface and preparation method thereof | |
| CN107098637A (en) | A kind of novel ecological pervious concrete material and preparation method thereof | |
| CN103936346B (en) | A kind of haydites of book structure pervious ecological concrete | |
| CN105693124B (en) | For the preparation method and application method of the recycled fine aggregate conserved in concrete | |
| CN107973548A (en) | A kind of high anti-freezing pervious concrete additive and preparation method thereof | |
| CN110407540B (en) | Light-emitting concrete permeates water and contains its road pavement system | |
| CN102674764A (en) | High water concrete for sidewalks and preparation method thereof | |
| CN110981366A (en) | Preparation and construction method of porous coral aggregate permeable purified concrete | |
| CN108516772B (en) | Pervious concrete and preparation method thereof | |
| CN110467400A (en) | One kind mixing the freeze proof pervious concrete of rubber | |
| CN105130349A (en) | Foundation pit engineering waterproof curtain material based on industrial waste residue | |
| CN107216092B (en) | A kind of cement-based flexible water-permeable brick | |
| CN109265139A (en) | A kind of pair of pollutant has the Ceramsite water permeable brick and preparation method of interception effect | |
| CN110272245A (en) | A kind of the sponge urban water-through concrete and preparation method of high intensity | |
| CN109626911A (en) | A kind of pervious concrete and preparation method thereof with lasting water purification function | |
| CN106699058A (en) | Ecological concrete | |
| CN109293313A (en) | A kind of brick made of mud and its preparation process | |
| CN108793896A (en) | A kind of pervious concrete and preparation method thereof | |
| CN106946496A (en) | A kind of pulvis additive suitable for pervious concrete | |
| CN109809769A (en) | A kind of thickening type high-strength water-permeable superfine sand concrete | |
| CN109293294A (en) | A kind of side slope deep layer gutter enhancement eco-concrete | |
| CN109056455A (en) | A kind of sponge urban construction permeable side walk slab and method for paving | |
| CN107721226A (en) | It is a kind of to be prewetted duration control method rich in brick regenerated coarse aggregate | |
| CN104045282B (en) | Nonporous closed water-permeable drainage ditch cover plate and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |