CN109111173A - A kind of pervious concrete and preparation method thereof - Google Patents
A kind of pervious concrete and preparation method thereof Download PDFInfo
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- CN109111173A CN109111173A CN201811226557.1A CN201811226557A CN109111173A CN 109111173 A CN109111173 A CN 109111173A CN 201811226557 A CN201811226557 A CN 201811226557A CN 109111173 A CN109111173 A CN 109111173A
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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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
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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
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention discloses a kind of pervious concrete and preparation method thereof, be made of the raw material of following weight percent: cement 20 ~ 25%, coarse aggregate 50 ~ 60%, adhesive 5 ~ 10%, polyethylene glycol 5 ~ 10%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 5 ~ 10%, surplus is water；It is not only able to effectively enhance the cohesive force of cement slurry and aggregate by the pervious concrete that above-mentioned each raw material weight percent according to the invention is prepared, the working performance of concrete can also be effectively improved, improve resistance to compression, bending resistance, impact strength and the coefficient of permeability of concrete, to extend the service life of concrete.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of pervious concrete and preparation method thereof.
Background technique
With the fast development of economy and society, scale and the dynamics of urban construction are continued to increase, so that urban surface ring
Border is gradually hardened, and is greatly negatively affected to the ecological annulus in city；Traditional cement or asphalt floor can prevent rainwater from seeping
Underground is arrived thoroughly, is not only be easy to cause urban waterlogging, is influenced traffic, also will cause being largely lost for rainwater, be unfavorable for underground water
Supplement；If things go on like this, the problems such as decline that will cause level of ground water, influences vegetation growth, aggravates arid, the water shortage in city；And
And hard surface hinders atmospheric evaporation circulation, and air humidity in urban area is caused to reduce, temperature increases, and forms " heat island effect
It answers "；For this purpose, country advocates energetically and develops " sponge city ".
Pervious concrete is also known as celluar concrete, non-fine concrete, permeable terrace, be by aggregate, cement, reinforcing agent and
A kind of porous light concrete made of water mixing, it is free of fine aggregate, mutual by coarse aggregate surface cladding a thin layer cement slurry
It bonds and forms the equally distributed honeycomb structure in hole, therefore have the characteristics that ventilative, permeable and light-weight.
And pervious concrete while meeting intensity requirement first, it is also necessary to keep certain perforation hole to meet
Aqueous requirement, therefore when preparing other than selecting suitable raw material, will also by mix-design and preparation process with
And additive achievees the purpose that while proof strength and porosity.
Summary of the invention
In response to the problems existing in the prior art, the purpose of the present invention is to provide one kind, and resistance to compression, bending resistance, shock resistance can be improved
The high pervious concrete and preparation method thereof of the coefficient of permeability of intensity.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of pervious concrete is made of the raw material of following weight percent: cement 20 ~ 25%, coarse aggregate 50 ~ 60%, adhesive
5 ~ 10%, polyethylene glycol 5 ~ 10%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 5 ~ 10%, surplus is water.
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- (- 1 methyl of 4- hydroxyl)-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 ~ 10 g is weighed3ML acid with strong oxidizing property mixing, in 100 ~ 120kHz ultrasound
Handled 2 ~ 4 hours under wave, be then heated to 100 ~ 120 DEG C, the dry glass fibre of 1 ~ 103g is added, be stirred at reflux reaction 15~
24 hours, centrifuge separation, solid was washed with water to neutrality, was dried in vacuo at 40 DEG C to get carbon nanotube-glass fibre of acidification is arrived
Composite 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 is contained by the ionic liquid that the above method is prepared, structure is simple, and fusing point is low, dissolves
The ordinary organic solvents such as ability is strong, vapour pressure is low and the peculiar property that water does not have, by 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperazine
On the one hand pyridine bromide ionic liquid can be used as antifreezing agent as additive, the pumpability that enhancing concrete is constructed in winter mentions
The endurance quality of high concrete, at the same it is good using ion liquid dissolving performance, the compatibility between each component can be increased, improved mixed
Coagulate the workability of soil.
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 concrete crushing strength；The lamella reticular structure of carbon nanotube simultaneously, specific surface
Product is big, and porosity is high, and the coefficient of permeability of concrete on the one hand can be improved, and on the other hand utilizes the good mechanical property of carbon nanotube
Can, the curved drawing performance and impact resistance of concrete can be improved, to further improve the performance of concrete, extend concrete
Service life；It is combined simultaneously with (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid of 1,3- bis- by ionic bond and forms composite wood
Material, can effectively improve acidification carbon nanotube-glass fiber compound material dispersion performance, is allowed to evenly dispersed in system.
Preferably, the coarse aggregate is matched using single-stage, partial size 5-20mm.
Preferably, the adhesive is dispersibility latex；Adhesive can increase the consistency of cement slurry, make cement slurry
Body is easier to be adhered on aggregate, so that reducing cement slurry flows into concrete base, improves the coefficient of permeability of pervious concrete；
Meanwhile redispersible adhesive can be improved the cohesive force between cement slurry and aggregate, to improve the intensity of pervious concrete.
Preferably, the polyethylene glycol by PEG 20000, polyethylene glycol 400 by weight 1:0.5-1 mix and
At.
The mobility and dispersibility of concrete mortar, while polyethylene glycol branch can be improved in side-chain of polyelycol hydroxyl group
In oxygen atom can make the abundant aquation of mortar in conjunction with the water of free state in concrete glue mortar, and expand in concrete particle
The free state water that gelinite is included is released during dissipating, in conjunction with long-chain branch polyethylene group, is had significantly to slurry
Deferred action improves the workability of concrete, avoids generating asking for crack and fracture etc. after the concrete coagulation
Topic；The hydroxyl base of polyethylene glycol and piperidines ionic liquid in carbon nanotube-glass fibre-piperidines ionic liquid composite material simultaneously
By the interaction such as covalent bond, hydrogen bond and Van der Waals force between group and other components, the stability of concrete structure can be improved,
Improve concrete strength.
Preferably, the cement is portland cement, and label is not less than 42.5.
Preferably, the acid with strong oxidizing property is 1/100~100/1 molar ratio hydrogen peroxide and hydrochloric acid mixed solution.
The present invention also provides the preparation methods of the pervious concrete, and steps are as follows: by formulation weight percentage take cement,
Coarse aggregate, carbon nanotube-glass fibre-piperidines ionic liquid composite material are added sequentially in blender, are stirred,
Under agitation, adhesive, polyethylene glycol, water are added in blender respectively, continue to stir 5-10min, is made described
Water coagulation soil；The pervious concrete that preparation method according to the invention is prepared is not only able to effectively enhance cement slurry and bone
The cohesive force of material, additionally it is possible to be effectively improved the working performance of concrete, improve the intensity and coefficient of permeability of concrete, extend coagulation
The service life of soil.
Compared with prior art, the beneficial effects of the present invention are:
(1) for the present invention by cooperation addition carbon nanotube-glass fibre-piperidines ionic liquid composite material, utilization is modified
The compression strength of concrete can be improved in glass fibre；Piperidines ionic liquid can enhance the pumpability that concrete is constructed in winter, mention
The endurance quality of high concrete, while piperidines ion liquid dissolving performance is good, can increase the compatibility between each component, improves mixed
Coagulate the workability of soil；The curved drawing performance and compression strength of concrete can be improved in carbon nanotube, while improving the permeable of concrete
Performance；It is not only able to effectively using concrete made of carbon nanotube-glass fibre-piperidines ionic liquid composite material of the present invention
Enhance the cohesive force of cement slurry and aggregate, additionally it is possible to which the intensity and coefficient of permeability for significantly improving concrete extend concrete
Service life；
(2) polyethylene glycol in pervious concrete of the present invention, carbon nanotube-glass fibre-piperidines ionic liquid composite material with
By the interaction such as covalent bond, hydrogen bond and Van der Waals force between other components, the stability of concrete structure is improved, resistance to compression is made
Performance improves.
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.
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.
A kind of pervious concrete is made of the raw material of following weight percent: cement 20%, coarse aggregate 60%, adhesive 5%,
Polyethylene glycol 5%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 8%, surplus is water.
Wherein, the adhesive is the dispersibility latex that fineness is 100 mesh；The coarse aggregate size is 5-20mm；Institute
The cement stated is 42.5 ordinary portland cements；The polyethylene glycol by PEG 20000, polyethylene glycol 400 by weight
1:0.8 mixing.
The preparation method of the pervious concrete, steps are as follows: taking cement, coarse aggregate, carbon to receive by formulation weight percentage
Mitron-glass fibre-piperidines ionic liquid composite material is added sequentially in blender, is stirred, in stirring condition
Under, adhesive, polyethylene glycol, water are added in blender respectively, continues to stir 5-10min, the pervious concrete is made.
Embodiment 2
One kind 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperidines bromide ionic liquid preparation method is same as Example 1.
The preparation method of the carbon nanotube-glass fibre-piperidines ionic liquid composite material, includes the following steps:
S1, the carbon nanotube for weighing 1 g drying are mixed with 500mL acid with strong oxidizing property, are handled 3 hours under 120kHz ultrasonic wave,
120 DEG C are then heated to, the dry glass fibre of 1000g is added, is stirred at reflux reaction 24 hours, centrifuge separation, solid water
It is washed till neutrality, vacuum drying is at 40 DEG C to get the carbon nanotube-glass fiber compound material for arriving acidification；
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.
A kind of pervious concrete is made of the raw material of following weight percent: cement 25%, coarse aggregate 50%, adhesive 5%,
Polyethylene glycol 5%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 10%, surplus is water；The polyethylene glycol by
PEG 20000, polyethylene glycol 400 are mixed by weight 1:0.5.
The preparation method is the same as that of Example 1 for the pervious concrete.
Embodiment 3
One kind 1,3- bis- (- 1 methyl of 4- hydroxyl)-piperidines bromide ionic liquid preparation method 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 1 g is weighed3The mixing of mL acid with strong oxidizing property, is handled 6 hours under 110kHz ultrasonic wave,
90 DEG C are then heated to, the dry glass fibre of 1000g is added, is stirred at reflux reaction 15 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 1.1mg: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.
A kind of pervious concrete is made of the raw material of following weight percent: cement 20%, coarse aggregate 50%, adhesive
10%, polyethylene glycol 10%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 5%, surplus is water；The poly- second two
Alcohol is mixed by PEG 20000, polyethylene glycol 400 by weight 1:1.
The preparation method is the same as that of Example 1 for the pervious concrete.
Comparative example 1
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, by following weight percent
Raw material composition: cement 20%, coarse aggregate 60%, adhesive 5%, polyethylene glycol 13%, surplus are water, remaining is all the same with embodiment 1.
Comparative example 2
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, by following weight percent
Raw material composition: cement 20%, coarse aggregate 60%, adhesive 5%, polyethylene glycol 5%, carbon nanotube-piperidines ionic liquid composite material
8%, surplus is water；
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 3
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, by following weight percent
Raw material composition: cement 20%, coarse aggregate 50%, adhesive 10%, polyethylene glycol 8%, the carbon nanotube-glass fibre composite wood being acidified
Material 8%, surplus is water.
Comparative example 4
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, the polyethylene glycol is by poly- second
Glycol 20000, polyethylene glycol 400 are mixed by weight 1:1.5.
Comparative example 5
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, the coarse aggregate size is 1-
5mm。
Comparative example 6
The present embodiment provides a kind of pervious concretes, compared with Example 1, the difference is that, 1,3- bis- (- 1 first of 4- hydroxyl
Base)-piperidines bromide ionic liquid the preparation method is as follows: 4- hydroxy-N-methvl piperidines is dissolved in toluene, add 1,3- dibromo
Propane, 4- hydroxy-N-methvl piperidines and 1, the molar ratio of 3- dibromopropane are 1:1,80 DEG C of oil baths, are condensed back under nitrogen protection
React 12h to get.
Application examples
Conventional performance index test is carried out to the pervious concrete that embodiment 1 ~ 3 and comparative example 1 ~ 6 are prepared, as a result such as following table
Shown in 1.
By upper table result it is found that implementing to be mixed with carbon nanotube-glass fibre-piperidines provided by the present invention in 1 ~ 3
Ionic liquid composite material, the results showed that the pervious concrete that each raw material weight per distribution ratio is prepared according to the present invention
28d compression strength, 28d flexural tensile strength significantly improve, and so that pervious concrete is had higher coefficient of permeability, and can be improved
The freeze thawing resistance cycle-index of water coagulation soil, to extend the service life of pervious concrete, and the performance of embodiment 1 is best；
Pervious concrete described in comparative example 1 is not added with carbon nanotube-glass fibre-piperidines ionic liquid composite material, is prepared into
To every conventional performance index of pervious concrete reduce, illustrate that carbon nanotube-glass fibre-piperidines ionic liquid is compound
Material plays a key effect to the performance for improving pervious concrete of the present invention；
The composite material of 2 pervious concrete of comparative example addition is without glass fibre, the items for the pervious concrete being thus prepared
Conventional performance index significantly reduces, and the compression strength decline of especially concrete is the most obvious, illustrates that glass fibre is saturating to improving
The compression strength of water coagulation soil plays an important role；
The composite material of 3 pervious concrete of comparative example addition is not compound with pyridine ion liquid, and the items of pervious concrete are conventional
Performance indicator significantly reduces, especially freeze thawing resistance cycle-index, illustrates pyridine ion liquid to the freeze proof of improvement pervious concrete
Performance plays an important role；
Comparative example 4 changes the polyethylene glycol weight proportion, and the every traditional performance for the pervious concrete being thus prepared refers to
Mark significantly reduces, and illustrates the weight proportion for changing polyethylene glycol, will affect polyethylene glycol viscosity, makes to be prepared permeable mixed
Solidifying soil is unable to reach optimum performance；
5 pervious concrete of comparative example changes the coarse aggregate size size, and the porosity for the pervious concrete being prepared is significant
It reduces, this may be since the partial size of coarse aggregate becomes smaller, and the density of concrete increases；
Comparative example 6 changes the preparation method of 1,3-, bis- (- 1 methyl of 4- the hydroxyl)-piperidines bromide ionic liquid, changes 4- hydroxyl
Base-N- methyl piperidine and 1, the molar ratio of 3- dibromopropane can generate a small amount of 4- hydroxyl-1- methyl-1-(3- bromopropyl)-piperidines
Bromide, therefore the active force between ionic liquid and other components can weaken, the items for the pervious concrete being thus prepared are often
Advising performance indicator reduces.
In conclusion pervious concrete each raw material component compatibility provided by the present invention is reasonable, it can admirably meet phase
National standard and application request are closed, there is fabulous popularization, application prospect.
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, which is characterized in that be made of the raw material of following weight percent: cement 20 ~ 25%, coarse aggregate
50 ~ 60%, adhesive 5 ~ 10%, polyethylene glycol 5 ~ 10%, carbon nanotube-glass fibre-piperidines ionic liquid composite material 5 ~
10%, surplus is water.
2. a kind of pervious concrete according to claim 1, which is characterized in that the ionic liquid is (the 4- hydroxyl of 1,3- bis-
Base -1- methyl)-piperidines bromide ionic liquid.
3. a kind of pervious concrete according to claim 2, which is characterized in that 1, the 3- bis- (- 1 methyl of 4- hydroxyl)-
Piperidines bromide ionic liquid the preparation method is as follows: 4- hydroxy-N-methvl piperidines is dissolved in toluene, add 1,3- dibromo third
Alkane, 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 back under nitrogen protection
React 12h to get.
4. a kind of pervious concrete according to claim 3, which is characterized in that the carbon nanotube-glass fibre-piperidines
The preparation method of ionic liquid composite material, includes the following steps:
S1, the dry carbon nanotube and 1~1 × 10 of 1 ~ 10 g 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.
5. a kind of pervious concrete according to claim 4, which is characterized in that the coarse aggregate is matched using single-stage, partial size
For 5-20mm.
6. a kind of pervious concrete according to claim 5, which is characterized in that the adhesive is dispersibility latex.
7. a kind of pervious concrete according to claim 6, which is characterized in that the polyethylene glycol is by polyethylene glycol
20000, polyethylene glycol 400 is mixed by weight 1:0.5-1.
8. pervious concrete according to claim 7, which is characterized in that the cement is portland cement, and label is not low
In 42.5.
9. a kind of pervious concrete according to claim 8, which is characterized in that the acid with strong oxidizing property be 1/100~
100/1 molar ratio hydrogen peroxide and hydrochloric acid mixed solution.
10. the preparation method of any one of claim 1 ~ 9 pervious concrete, which is characterized in that steps are as follows: by formula weight
Amount percentage takes cement, coarse aggregate, carbon nanotube-glass fibre-piperidines ionic liquid composite material to be added sequentially to blender
In, it stirs, under agitation, adhesive, polyethylene glycol, water is added in blender respectively, continue to stir 5-
The pervious concrete is made in 10min.
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| CN201811226557.1A CN109111173B (en) | 2018-10-22 | 2018-10-22 | Pervious concrete and preparation method thereof |
| CN202010939177.3A CN112125602A (en) | 2018-10-22 | 2018-10-22 | Preparation method of pervious concrete |
| CN202010939176.9A CN112110698A (en) | 2018-10-22 | 2018-10-22 | Pervious concrete |
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| CN112358257A (en) * | 2020-11-02 | 2021-02-12 | 江苏新路德建设有限公司 | Pervious asphalt concrete and preparation method and application thereof |
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| CN112794673A (en) * | 2021-01-13 | 2021-05-14 | 同济大学 | Inorganic-organic composite powder reinforcing agent for pervious concrete and application thereof |
| CN114426418A (en) * | 2022-02-23 | 2022-05-03 | 上海拜石实业发展有限公司 | Preparation method of environment-friendly colorful pervious concrete |
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| CN109111173B (en) | 2020-10-30 |
| CN112125602A (en) | 2020-12-25 |
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