CN109369061A - A kind of pervious concrete additive and pervious concrete - Google Patents
A kind of pervious concrete additive and pervious concrete Download PDFInfo
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- CN109369061A CN109369061A CN201811226548.2A CN201811226548A CN109369061A CN 109369061 A CN109369061 A CN 109369061A CN 201811226548 A CN201811226548 A CN 201811226548A CN 109369061 A CN109369061 A CN 109369061A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/128—Heterocyclic nitrogen compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D211/40—Oxygen atoms
- C07D211/44—Oxygen atoms attached in position 4
- C07D211/46—Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a kind of pervious concrete additive and using pervious concrete made of the additive, such pervious concrete additive is by parts by weight are as follows: 15~35 parts of redispersable latex powder, 15 ~ 25 parts of water-reducing agent, 5~10 parts of water-retaining agent, 8 ~ 15 parts of epoxy resin, carbon nanotube-glass fibre -10 ~ 20 parts of piperidines ionic liquid composite material, it is not only able to effectively enhance the cohesive force of cement slurry and aggregate using such pervious concrete additive, the working performance of pervious concrete can also be effectively improved, improve the intensity and coefficient of permeability of pervious concrete, extend the service life of pervious concrete.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of pervious concrete additive and pervious concrete.
Background technique
In Process of Urbanization Construction, the earth's surface of modern city is gradually covered by the hardening of the material water-proof materials such as building and concrete
Lid, forms " the artificial desert " on ecology, convenient and fast means of transportation are laid with smooth road and bring in the trip to people
While greatly convenience, great negative effect is also brought to the ecological environment in city in these fluid-tight road surfaces.
Firstly, traditional ground pavement it is emphasised that ground sturdy and durable and usability, but such paving is not
Valuable natural precipitation is but largely passed through sewerage system with lower soil and underground water blocking, precipitation completely by water penetration
Pipe network is discharged into the earth surface water sources such as rivers,lakes and seas, and the excessive of urban groundwater extracts in addition, leads to Urban Underground water level increasingly
It is low, " funnel type " level of ground water geologically is formd, ground decline is caused, coastal area also results in inwelling, this
The effective use of rainwater is just seriously affected, while rainwater is the drainage grade for first passing through ground when waterproof ground pavement rainfall
Or ground shows that ditch is discharged into sewer, rainwater before entering sewer will the rainwash Jing Guo relatively long distance with just can enter city
Lower drainage system.
The process makes the rainwater of initial relative clean dissolve in a large amount of urban surface pollutant, generates in this runoff process
Secondary pollution, peripheral ground natural water is entered by sewerage system, has aggravated the pollution level of natural water, influence
The growth of urban surface plant, destroys the urban surface ecological balance；Secondly the ground pavement of this surface compact is unfavorable for
Alleviate the noise pollution in city, the noise mainly generated from road traffic；In the rainy day due to that cannot drain in time, road is caused
Area water, is brought at phenomena such as making rainy day driving generate " drift slide ", " splashings ", " Night Glare " to pedestrian's trip and vehicle driving
It is inconvenient；In addition it is this it is fluid-tight mat formation and surrounding cities building collective effect, will increase " tropical island effect " in city；There are also by
Color in it is gloomy, lacks angry, modern city and is also referred to as " heat island of grey ".
One kind is needed to be able to satisfy pavement performance at present, while again can be comfortable for mankind's construction with natural environment coordinated growth
The paving material of living environment；Permeable concrete is also known as celluar concrete, non-fine concrete, and permeable terrace is a kind of
Environmental environment-friendly concrete, it is a kind of porous light concrete as made of aggregate, cement and water mixing, it is free of thin bone
Material is mutually bonded by coarse aggregate surface cladding a thin layer cement slurry and forms the equally distributed honeycomb structure in hole, it is existing
Certain intensity, and there is certain ventilative water permeability, it can be very good to alleviate the waterproof influence caused by environment of mating formation.
Nano material makes it have special performance in terms of structure, physics and chemical property, is current since size is small
The hot spot of materialogy area research is described as " century most promising material " by scientists.
The present invention provides pervious concretes made of a kind of pervious concrete additive, have excellent Physical Mechanical
Energy.
Summary of the invention
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of pervious concrete additives and use should
Pervious concrete made of additive is not only able to effectively enhance the cohesive force of cement slurry and aggregate using such additive,
The workability of pervious concrete can also be effectively improved, improve the intensity and coefficient of permeability of pervious concrete, extend permeable coagulation
The service life of soil.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of pervious concrete additive, is made of the raw material of following portions by weight: 15~35 parts of redispersable latex powder, diminishing
15 ~ 25 parts of agent, 5~10 parts of water-retaining agent, 8 ~ 15 parts of epoxy resin, carbon nanotube-glass fibre-piperidines ionic liquid composite material
10 ~ 20 parts.
Using pervious concrete additive of the invention, the performance indexes of pervious concrete can significantly improve,
In: redispersable latex powder can increase the consistency of cement slurry, and cement slurry is made to be easier to be adhered on aggregate, to reduce
Cement slurry flows into pervious concrete bottom, improves the coefficient of permeability of pervious concrete；Meanwhile redispersable latex powder can mention
Cohesive force between high cement slurry body and aggregate, to improve the intensity of pervious concrete；Water-retaining agent is improving properties of Portland cement
While, the later strength of pervious concrete can be enhanced；Water-reducing agent can then significantly improve the working performance of pervious concrete, lead to
The working performance for adjusting pervious concrete using water-reducing agent is crossed, both reduces cement consumption, in turn ensures the work of pervious concrete
Make performance, and avoids the problems such as coefficient of permeability caused by cement slurry is excessive or the ratio of mud is excessive is small or intensity is low；Carbon nanometer
Pipe-glass fibre-piperidines ionic liquid composite material can be effectively improved the coefficient of permeability and compression strength of pervious concrete；This
Outside, epoxy resin, carbon nanotube-glass fibre-pass through ionic bond, are total between piperidines ionic liquid composite material and other components
The interaction such as valence link, hydrogen bond and Van der Waals force, can improve the stability of pervious concrete structure, improve compressive property.
Preferably, the ionic liquid is 1,3- bis- (4- hydroxyl -1- methyl)-piperidines bromide ionic liquid.
The present invention also provides the preparation method of 1,3-, bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid, steps
It is as follows: 4- hydroxy-N-methvl piperidines being dissolved in toluene, adds 1,3- dibromopropane, 4- hydroxy-N-methvl piperidines and 1,3- bis-
The molar ratio of N-Propyl Bromide is 1:0.4,80 DEG C of oil baths, be condensed back under nitrogen protection reaction 12h to get.
1,3- bis- (4- hydroxyl -1- methyl)-piperidines bromide ionic liquid purity that preparation method through the invention obtains
And yield is very high, and preparation method is simple.
The present invention also provides the preparation methods of the carbon nanotube-glass fibre-piperidines ionic liquid composite material, including
Following steps:
S1, the dry carbon nanotube and 1~1 × 10 of 1 ~ 10g is weighed3ML acid with strong oxidizing property mixing, in 100 ~ 120kHz ultrasonic wave
Lower processing 2 ~ 4 hours, is then heated to 100 ~ 120 DEG C, is added 1 ~ 103G dry glass fibre, is stirred at reflux reaction 15~24
Hour, centrifuge separation, solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get multiple to carbon nanotube-glass fibre of acidification
Condensation material；
S2, the carbon nanotube-glass fiber compound material being acidified obtained by step S1 is added to 0.01mol L-1NaOH solution
In, solid-to-liquid ratio is (1.0-1.2) mg:1mL, stirs 2h, centrifugation, and solid is washed with water to neutrality, and vacuum drying is at 40 DEG C to get arriving
Carbon nanotube-glass fiber compound material of Alkalized forms；
S3, by the carbon nanotube-glass of described 1,3- bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid and Alkalized forms
The fibrous composite mass ratio of 1:8-12 in mass ratio is added in water, and 2h is stirred to react at 40 DEG C, and centrifuge separation, solid is used
Washing, then at 40 DEG C be dried in vacuo to get.
Wherein, hydroxyl group being contained by the ionic liquid that the above method is prepared, structure is simple, low with fusing point,
The ordinary organic solvents such as solvability is strong, vapour pressure is low and the peculiar property that water does not have, by (- 1 first of 4- hydroxyl of 1,3- bis-
Base)-piperidines bromide ionic liquid as additive, on the one hand can be used as antifreezing agent, and enhancing pervious concrete is constructed in winter
Pumpability, improve the endurance quality of pervious concrete, while good using ion liquid dissolving performance, can increase between each component
Compatibility, improve the workability of pervious concrete.
Carbon nanotube-glass fibre-piperidines the ionic liquid composite material being prepared by the above method, makes glass fibers
Dimension table face is grafted with carbon nanotube-piperidines ionic liquid, is modified fiberglass surfacing, glass fibre and cement can be improved
Interface binding intensity between slurry, to improve pervious concrete compression strength；The lamella reticular structure of carbon nanotube simultaneously, than
Surface area is big, and porosity is high, and the coefficient of permeability of pervious concrete on the one hand can be improved, on the other hand good using carbon nanotube
Mechanical property, can be improved the curved drawing performance and impact resistance of pervious concrete, to further improve pervious concrete
Performance extends the service life of pervious concrete；Pass through simultaneously with 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperidines bromide ionic liquid
Ionic bond combines and forms composite material, can effectively improve acidification carbon nanotube-glass fiber compound material dispersion performance, is allowed to
It is evenly dispersed in system.
Preferably, the acid with strong oxidizing property is 1/100~100/1 molar ratio hydrogen peroxide and hydrochloric acid mixed solution.
Preferably, the water-retaining agent is kaolin, polyacrylamide 1:1 ~ 3 in mass ratio mix.
Preferably, the water-reducing agent by 6- hydroxyl -2- sodium naphthalene sulfonate, 2,6- di-t-butyl sodium naphthalene sulfonate 1:2 in mass ratio ~
5 mix.
The present invention also provides pervious concretes made of the pervious concrete additive, by the raw material of following portions by weight
Composition: 100~250 parts of cement, 900~1200 parts of stone, 20~50 parts of pervious concrete additive, 100~120 parts of water.
It is not only able to effectively enhance the bonding of cement slurry and aggregate according to pervious concrete made of above-mentioned parts by weight
Power, intensity also with higher and coefficient of permeability, are able to extend the service life of pervious concrete.
Preferably, the cement is in portland cement or ordinary portland cement of the strength grade more than or equal to 42.5
Any one or combinations thereof.
Preferably, the size grading of the stone are as follows:
1≤partial size < 5mm 5-10%；
5≤partial size < 10mm 10-20%；
10≤partial size < 15mm 50-60%；
15≤partial size < 25mm 20-30%.
The stone is added in the preparation process of pervious concrete according to the above gradation mode, the lesser stone of partial size can
It is partially fill in the biggish stone of partial size, so as to improve the pressure-proof and snap-resistent intensity of pervious concrete.
Compared with prior art, the beneficial effects of the present invention are:
(1) additive of the present invention adds carbon nanotube-glass fibre-piperidines ionic liquid composite material, utilizes modified glass
The compression strength of pervious concrete can be improved in glass fiber；Piperidines ionic liquid can enhance the pumpable that pervious concrete is constructed in winter
Property, improves the endurance quality of pervious concrete, while piperidines ion liquid dissolving performance is good, can increase compatible between each component
Property, improve the workability of pervious concrete；The curved drawing performance and compression strength of pervious concrete can be improved in carbon nanotube, simultaneously
Improve the water permeability of pervious concrete；It is made of carbon nanotube-glass fibre-piperidines ionic liquid composite material of the present invention
Pervious concrete be not only able to effectively enhance cement slurry and aggregate cohesive force, additionally it is possible to significantly improve pervious concrete
Intensity and coefficient of permeability extend the service life of pervious concrete；
(2) epoxy resin in pervious concrete additive of the present invention, carbon nanotube-glass fibre-piperidines ionic liquid are compound
By the interaction such as ionic bond, covalent bond, hydrogen bond and Van der Waals force between material and other components, pervious concrete knot is improved
The stability of structure, improves compressive property.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention；
Unless stated otherwise, the present invention uses reagent, method and apparatus is the art conventional reagents, method and apparatus.
The present invention will be further described With reference to embodiment.
In following embodiment, redispersable latex powder is provided, trade mark RE5044N by Germany watt gram；Cement model
P.O 42.5。
Embodiment 1
One kind 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperidines bromide ionic liquid is the preparation method is as follows: by 4- hydroxy-N-methvl piperazine
Pyridine is dissolved in toluene, adds 1,3- dibromopropane, 4- hydroxy-N-methvl piperidines and 1, and the molar ratio of 3- dibromopropane is 1:0.4,
80 DEG C of oil baths, be condensed back under nitrogen protection reaction 12h to get.
The preparation method of the carbon nanotube-glass fibre-piperidines ionic liquid composite material, includes the following steps:
S1, it weighs the dry carbon nanotube of 1g and is mixed with 10mL acid with strong oxidizing property, handle 2 hours under 100kHz ultrasonic wave, so
After be heated to 100 DEG C, the dry glass fibre of 100g is added, is stirred at reflux reaction 20 hours, centrifuge separation, solid be washed with water to
Neutrality, vacuum drying is to get to carbon nanotube-glass fiber compound material of acidification at 40 DEG C；
S2, the carbon nanotube-glass fiber compound material being acidified obtained by step S1 is added to 0.01mol L-1NaOH solution
In, solid-to-liquid ratio 1.2mg:1mL stirs 2h, centrifugation, and solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get alkalization shape is arrived
Carbon nanotube-glass fiber compound material of formula；
S3, by the carbon nanotube-glass of described 1,3- bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid and Alkalized forms
The fibrous composite mass ratio of 1:10 in mass ratio is added in water, and 1h is stirred to react at 40 DEG C, centrifuge separation, solid water
Wash, then at 40 DEG C be dried in vacuo to get.
The acid with strong oxidizing property is that 1:100 is mixed in molar ratio for hydrogen peroxide and hydrochloric acid；The water-retaining agent is kaolinite
Soil, polyacrylamide 1:2 in mass ratio are mixed；The water-reducing agent is by 6- hydroxyl -2- sodium naphthalene sulfonate, 2,6- di-t-butyl naphthalin
Sodium sulfonate 1:3 in mass ratio is mixed.
The size grading of the stone are as follows:
1≤partial size < 5mm 5%；
5≤partial size < 10mm 15%；
10≤partial size < 15mm 50%；
15≤partial size < 25mm 30%.
The preparation (based on parts by weight) of pervious concrete additive: by 25 parts of redispersable latex powder, 20 parts of water-reducing agent,
8 parts of water-retaining agent, 10 parts of epoxy resin and above-mentioned resulting carbon nanotube-glass fibre-piperidines ionic liquid composite material are by weight
Amount number takes 15 parts to be uniformly mixed to get pervious concrete additive.
The preparation (based on parts by weight) of pervious concrete: first by 200 parts of cement, 1000 parts of stone and obtained above
Water pervious concrete additive takes in 30 parts of addition blenders and stirs 10min, adds 100 parts of water stirring 15min to get permeable
Concrete.
Embodiment 2
The preparation method of one kind 1,3- bis- (4- hydroxyl -1- methyl)-piperidines bromide ionic liquid is same as Example 1.
The preparation method of the carbon nanotube-glass fibre-piperidines ionic liquid composite material, includes the following steps:
S1, it weighs the dry carbon nanotube of 1g and is mixed with 500mL acid with strong oxidizing property, handle 3 hours under 120kHz ultrasonic wave, so
After be heated to 120 DEG C, the dry glass fibre of 1000g is added, is stirred at reflux reaction 24 hours, centrifuge separation, solid is washed with water
To neutrality, it is dried in vacuo at 40 DEG C to get carbon nanotube-glass fiber compound material of acidification is arrived；
S2, the carbon nanotube-glass fiber compound material being acidified obtained by step S1 is added to 0.01mol L-1NaOH solution
In, solid-to-liquid ratio 1.0mg:1mL stirs 2h, centrifugation, and solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get alkalization shape is arrived
Carbon nanotube-glass fiber compound material of formula；
S3, by the carbon nanotube-glass of described 1,3- bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid and Alkalized forms
The fibrous composite mass ratio of 1:12 in mass ratio is added in water, and 2h is stirred to react at 40 DEG C, centrifuge separation, solid water
Wash, then at 40 DEG C be dried in vacuo to get.
The acid with strong oxidizing property is that 1:1 is formed in molar ratio for hydrogen peroxide and hydrochloric acid；The water-retaining agent is kaolin, poly- third
Acrylamide 1:1 in mass ratio is mixed；The water-reducing agent is by 6- hydroxyl -2- sodium naphthalene sulfonate, 2,6- di-t-butyl sodium naphthalene sulfonate
1:2 is mixed in mass ratio.
The size grading of the stone are as follows:
1≤partial size < 5mm 10%；
5≤partial size < 10mm 10%；
10≤partial size < 15mm 60%；
15≤partial size < 25mm 20%.
The preparation (based on parts by weight) of pervious concrete additive: by 15 parts of redispersable latex powder, 25 parts of water-reducing agent,
10 parts of water-retaining agent, 15 parts of epoxy resin and above-mentioned resulting carbon nanotube-glass fibre-piperidines ionic liquid composite material are by weight
Amount number takes 10 parts to be uniformly mixed to get pervious concrete additive.
The preparation (based on parts by weight) of pervious concrete: first by 100 parts of cement, 1200 parts of stone and obtained above
Water coagulation soil additive takes in 20 parts of addition blenders and stirs 10min, adds 120 parts of water stirring 15min to get permeable coagulation
Soil.
Embodiment 3
The preparation method of one kind 1,3- bis- (4- hydroxyl -1- methyl)-piperidines bromide ionic liquid is same as Example 1.
Steps are as follows for the preparation method of the carbon nanotube-glass fibre-piperidines ionic liquid composite material:
S1, the dry carbon nanotube and 10 of 1g is weighed3The mixing of mL acid with strong oxidizing property, handles 6 hours, so under 110kHz ultrasonic wave
After be heated to 90 DEG C, the dry glass fibre of 1000g is added, is stirred at reflux reaction 15 hours, centrifuge separation, solid be washed with water to
Neutrality, vacuum drying is to get to carbon nanotube-glass fiber compound material of acidification at 40 DEG C；
S2, the carbon nanotube-glass fiber compound material being acidified obtained by step S1 is added to 0.01mol L-1NaOH solution
In, solid-to-liquid ratio 1.1mg:1mL stirs 2h, centrifugation, and solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get alkalization shape is arrived
Carbon nanotube-glass fiber compound material of formula；
S3, by the carbon nanotube-glass of described 1,3- bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid and Alkalized forms
The fibrous composite mass ratio of 1:8 in mass ratio is added in water, and 1h is stirred to react at 40 DEG C, centrifuge separation, solid water
Wash, then at 40 DEG C be dried in vacuo to get.
The acid with strong oxidizing property is that 100:1 is formed in molar ratio for hydrogen peroxide and hydrochloric acid；The water-retaining agent is kaolin, gathers
Acrylamide 1:3 in mass ratio is mixed；The water-reducing agent is by 6- hydroxyl -2- sodium naphthalene sulfonate, 2,6- di-t-butyl naphthalene sulfonic acids
Sodium 1:5 in mass ratio is mixed.
The size grading of the stone are as follows:
1≤partial size < 5mm 5%；
5≤partial size < 10mm 20%；
10≤partial size < 15mm 50%；
15≤partial size < 25mm 25%.
The preparation (based on parts by weight) of pervious concrete additive: by 35 parts of redispersable latex powder, 15 parts of water-reducing agent,
5 parts of water-retaining agent, 8 parts of epoxy resin and above-mentioned resulting carbon nanotube-glass fibre-piperidines ionic liquid composite material are by weight
Number takes 20 parts to be uniformly mixed to get pervious concrete additive.
The preparation (based on parts by weight) of pervious concrete: first by 250 parts of cement, 900 parts of stone and obtained above
Water coagulation soil additive takes in 50 parts of addition blenders and stirs 10min, adds 120 parts of water stirring 15min to get permeable coagulation
Soil.
Comparative example 1
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, first will
300 parts of cement, 880 parts of stone and pervious concrete additive obtained above, which take in 60 parts of addition blenders, stirs 10min, then
90 parts of water stirring 15min are added to get pervious concrete.
Comparative example 2
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, it is permeable
The preparation (based on parts by weight) of concrete admixture: by 25 parts of redispersable latex powder, 20 parts of water-reducing agent, 8 parts of water-retaining agent, ring
25 parts of oxygen resin are uniformly mixed to get pervious concrete additive.
Comparative example 3
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, it is permeable
The preparation (based on parts by weight) of concrete admixture: by 25 parts of redispersable latex powder, 20 parts of water-reducing agent, 8 parts of water-retaining agent, ring
15 parts of carbon nanotube-glass fiber compound material of 10 parts of oxygen resin and acidification are uniformly mixed to get pervious concrete additive.
Comparative example 4
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, it is permeable
The preparation (based on parts by weight) of concrete admixture: by 25 parts of redispersable latex powder, 20 parts of water-reducing agent, 8 parts of water-retaining agent, ring
10 parts of oxygen resin and carbon nanotube -15 parts of piperidines ionic liquid composite material are uniformly mixed to get pervious concrete additive；
The carbon nanotube-piperidines ionic liquid composite material the preparation method is as follows:
S1, it weighs the dry carbon nanotube of 1g and is mixed with 10mL acid with strong oxidizing property, handle 2 hours under 100kHz ultrasonic wave, so
After be heated to 100 DEG C, be stirred at reflux reaction 20 hours, centrifuge separation, solid is washed with water to neutrality, is dried in vacuo at 40 DEG C, i.e.,
The carbon nanotube being acidified；
S2, the carbon nanotube being acidified obtained by step S1 is added to 0.01mol L-1In NaOH solution, solid-to-liquid ratio 1.2mg:
1mL stirs 2h, centrifugation, and solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get the carbon nanotube of Alkalized forms is arrived；
S3, the carbon nanotube of (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid of 1,3- bis- and Alkalized forms is pressed into matter
It measures the mass ratio than 1:10 to be added in water, 1h is stirred to react at 40 DEG C, be centrifugated, solid is washed with water, then at 40 DEG C
Vacuum drying to get.
Comparative example 5
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, 1,3-
The preparation method of two (- 1 methyl of 4- hydroxyl)-piperidines bromide ionic liquids, 4- hydroxy-N-methvl piperidines and 1,3- dibromopropane
Molar ratio is 1:1, remaining is all the same with embodiment 1.
Comparative example 6
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, it is described
Carbon nanotube-glass fibre-piperidines ionic liquid composite material preparation method, 1,3- bis- (- 1 methyl of 4- hydroxyl)-in step S3
The carbon nanotube of piperidines bromide ionic liquid and Alkalized forms-glass fiber compound material mass ratio is 1:15.
Comparative example 7
The present embodiment provides a kind of pervious concrete (based on parts by weight), compared with Example 1, the difference is that, it is permeable
The preparation (based on parts by weight) of concrete admixture: by 25 parts of redispersable latex powder, 20 parts of water-reducing agent, 8 parts of water-retaining agent and
Carbon nanotube-glass fibre -25 parts of piperidines ionic liquid composite material is uniformly mixed to get pervious concrete additive.
Application examples
Conventional performance index test is carried out to the pervious concrete that embodiment 1 ~ 3 and comparative example 1 ~ 7 are prepared, as a result such as following table
It is shown.
By upper table result it is found that implementing to be mixed with pervious concrete additive provided by the present invention in 1 ~ 3, the results showed that this
Invent provided by pervious concrete additive can significantly improve the intensity of pervious concrete, and make pervious concrete have compared with
High coefficient of permeability, and can be improved the freeze thawing resistance cycle-index of pervious concrete, to extend the use longevity of pervious concrete
Life, and the performance of embodiment 1 is best；
Comparative example 1 change pervious concrete parts by weight proportion, every conventional performance index of pervious concrete under
Drop, the parts by weight proportion for showing pervious concrete of the present invention rationally, can effectively improve the performance indicator of pervious concrete, extend
The service life of pervious concrete；
2 pervious concrete additive of comparative example is not added with carbon nanotube-glass fibre-piperidines ionic liquid composite material, preparation
Every conventional performance index of obtained pervious concrete reduces, and illustrates that carbon nanotube-glass fibre-piperidines ionic liquid is multiple
Condensation material plays a key effect to the performance for improving pervious concrete；
3 pervious concrete of comparative example addition additive in composite material not with 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperidines bromide
Ionic liquid is compound, and every conventional performance index of pervious concrete significantly reduces, especially 28d chloride diffusion coefficient and anti-
Freezing-thawing cycles illustrate (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid of 1,3- bis- to the freeze proof of improvement pervious concrete
And endurance quality plays an important role；
Composite material is without glass fibre in the additive of 4 pervious concrete of comparative example addition, the permeable coagulation that is thus prepared
Every conventional performance index of soil significantly reduces, and the compression strength decline of especially pervious concrete is the most obvious, illustrates glass
Fiber plays an important role to the compression strength for improving pervious concrete；
Comparative example 5 changes 4- hydroxy-N-methvl piperidines and 1 in ionic liquid preparation process, and the molar ratio of 3- dibromopropane can produce
4- hydroxyl-1- methyl-1-(3- bromopropyl)-piperidines bromide of hydroxy functional group is contained in raw a small amount of one end, thus ionic liquid with
Active force between other components can weaken, and the every conventional performance index for the pervious concrete being thus prepared reduces；
Comparative example 6 changes (the 4- hydroxyl-of 1,3- bis- in carbon nanotube-glass fibre-piperidines ionic liquid composite material preparation method
1 methyl)-piperidines bromide ionic liquid and Alkalized forms carbon nanotube-glass fiber compound material mass ratio, be thus prepared into
Every conventional performance index of the pervious concrete arrived reduces, especially 28d flexural tensile strength；
7 pervious concrete additive of comparative example is not added with epoxy resin, and the items for the pervious concrete being thus prepared are conventional
Performance indicator significantly reduces, and the compression strength decline of especially pervious concrete is the most obvious, this may be due to without containing ring
Oxygen resin reduces the viscosity of pervious concrete, and compression strength reduces.
The above, only of the invention illustrates embodiment, not to the present invention in any form with substantial limitation,
It should be pointed out that for those skilled in the art, under the premise of not departing from the method for the present invention, that makes several changes
It also should be regarded as protection scope of the present invention into supplement.
All those skilled in the art, without departing from the spirit and scope of the present invention, using being taken off above
The equivalent variations of a little change, modification and differentiation that the technology contents shown are made is equivalent embodiment of the invention；Meanwhile
Change, modification and the differentiation for any equivalent variations that all substantial technologicals according to the present invention do above-described embodiment, still belong to
In protection scope of the present invention.
Claims (10)
1. a kind of pervious concrete additive, it is characterised in that: be made of the raw material of following portions by weight: redispersable latex powder
15~35 parts, 15 ~ 25 parts of water-reducing agent, 5~10 parts of water-retaining agent, 8 ~ 15 parts of epoxy resin, carbon nanotube-glass fibre-piperidines from
10 ~ 20 parts of sub- liquid composite.
2. a kind of pervious concrete additive according to claim 1, it is characterised in that: the ionic liquid is 1,3- bis-
(4- hydroxyl -1- methyl)-piperidines bromide ionic liquid.
3. a kind of pervious concrete additive according to claim 2, it is characterised in that: 1,3-, bis- (the 4- hydroxyl -1
Methyl)-piperidines bromide ionic liquid the preparation method is as follows: 4- hydroxy-N-methvl piperidines is dissolved in toluene, add 1,3- bis-
N-Propyl Bromide, 4- hydroxy-N-methvl piperidines and 1, the molar ratio of 3- dibromopropane are 1:0.4,80 DEG C of oil baths, are condensed under nitrogen protection
Back flow reaction 12h to get.
4. a kind of pervious concrete additive according to claim 3, it is characterised in that: the carbon nanotube-glass fibers
Dimension-piperidines ionic liquid composite material preparation method, includes the following steps:
S1, the dry carbon nanotube and 1~1 × 10 of 1 ~ 10g is weighed3ML acid with strong oxidizing property mixing, under 100 ~ 120kHz ultrasonic wave
Processing 2 ~ 4 hours is then heated to 100 ~ 120 DEG C, is added 1 ~ 103G dry glass fibre, it is small to be stirred at reflux reaction 15~24
When, centrifuge separation, solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get compound to carbon nanotube-glass fibre of acidification
Material；
S2, the carbon nanotube-glass fiber compound material being acidified obtained by step S1 is added to 0.01mol L-1In NaOH solution,
Solid-to-liquid ratio is (1.0-1.2) mg:1mL, stirs 2h, centrifugation, and solid is washed with water to neutrality, is dried in vacuo at 40 DEG C to get alkali is arrived
Carbon nanotube-glass fiber compound material of change form；
S3, by the carbon nanotube-glass of described 1,3- bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid and Alkalized forms
The fibrous composite mass ratio of 1:8-12 in mass ratio is added in water, and 2h is stirred to react at 40 DEG C, and centrifuge separation, solid is used
Washing, then at 40 DEG C be dried in vacuo to get.
5. a kind of pervious concrete additive according to claim 4, which is characterized in that the acid with strong oxidizing property is 1/
100~100/1 molar ratio hydrogen peroxide and hydrochloric acid mixed solution.
6. a kind of pervious concrete additive according to claim 1, which is characterized in that the water-retaining agent be kaolin,
Polyacrylamide 1:1 ~ 3 in mass ratio mix.
7. a kind of pervious concrete additive according to claim 6, which is characterized in that the water-reducing agent is by 6- hydroxyl-
2- sodium naphthalene sulfonate, 2,6- di-t-butyl sodium naphthalene sulfonate 1:2 ~ 5 in mass ratio mix.
8. pervious concrete made of pervious concrete additive described in claim 1, which is characterized in that the pervious concrete
It is made of the raw material of following portions by weight: 100~250 parts of cement, 900~1200 parts of stone, pervious concrete additive 20~
50 parts, 100~120 parts of water.
9. pervious concrete made of pervious concrete additive according to claim 8, it is characterised in that: the cement is
Strength grade is more than or equal to any one in 42.5 portland cement or ordinary portland cement or combinations thereof.
10. pervious concrete made of pervious concrete additive according to claim 9, it is characterised in that: the stone
Size grading are as follows:
1≤partial size < 5mm 5-10%；
5≤partial size < 10mm 10-20%；
10≤partial size < 15mm 50-60%；
15≤partial size < 25mm 20-30%.
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| CN201811226548.2A CN109369061B (en) | 2018-10-22 | 2018-10-22 | Pervious concrete additive and pervious concrete |
| CN202110381235.XA CN113087436A (en) | 2018-10-22 | 2018-10-22 | Preparation method of pervious concrete admixture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933440A (en) * | 2022-06-08 | 2022-08-23 | 宁波新力建材科技有限公司 | Pervious concrete additive and pervious concrete |
| CN115477497A (en) * | 2022-09-27 | 2022-12-16 | 赵康驭 | Concrete curing agent capable of reducing water and improving strength and preparation method thereof |
| CN115784657A (en) * | 2022-12-05 | 2023-03-14 | 南京腾恒新材料有限公司 | Pervious concrete additive and pervious concrete |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115321870B (en) * | 2022-08-05 | 2023-04-14 | 安徽皖科新科技发展有限公司 | Special additive for lightweight concrete and preparation method thereof |
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| CN107686274A (en) * | 2017-07-24 | 2018-02-13 | 中国十七冶集团有限公司 | A kind of pervious concrete additive and pervious concrete |
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| CN107686274A (en) * | 2017-07-24 | 2018-02-13 | 中国十七冶集团有限公司 | A kind of pervious concrete additive and pervious concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933440A (en) * | 2022-06-08 | 2022-08-23 | 宁波新力建材科技有限公司 | Pervious concrete additive and pervious concrete |
| CN114933440B (en) * | 2022-06-08 | 2022-11-08 | 宁波新力建材科技有限公司 | Pervious concrete additive and pervious concrete |
| CN115477497A (en) * | 2022-09-27 | 2022-12-16 | 赵康驭 | Concrete curing agent capable of reducing water and improving strength and preparation method thereof |
| CN115784657A (en) * | 2022-12-05 | 2023-03-14 | 南京腾恒新材料有限公司 | Pervious concrete additive and pervious concrete |
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| CN113087436A (en) | 2021-07-09 |
| CN109369061B (en) | 2021-11-26 |
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