CN109503208A - High-intensitive pervious concrete and preparation method thereof - Google Patents
High-intensitive pervious concrete and preparation method thereof Download PDFInfo
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- CN109503208A CN109503208A CN201811374095.8A CN201811374095A CN109503208A CN 109503208 A CN109503208 A CN 109503208A CN 201811374095 A CN201811374095 A CN 201811374095A CN 109503208 A CN109503208 A CN 109503208A
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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
- 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
- C04B2111/40—Porous or lightweight materials
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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
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high-intensitive pervious concretes and preparation method thereof.High-intensitive pervious concrete contains the following parts by weight: 260-320 parts of cement, 35-50 parts of sands, 800-1000 parts of stones, 100-110 parts of water, 5.6-8.6 parts of adhesives, 1-5 parts of hydrophobically modified polyacrylamides, 2-5 parts of water-reducing agents, 200-300 parts of permeable aggregates, 300-400 parts of reinforcing agents, 5-10 parts of toughened fibers；Permeable aggregate is mixed by diatomite, lotus leaf hydrophobing agent and the active carbon that mass ratio is 1:0.6-1:1-2；Toughened fiber includes the microcrystalline cellulose and ramee that mass ratio is 1:2-3；Preparation method are as follows: the first mixture preparation；The preparation of second mixture；Finished product preparation.High-intensitive pervious concrete of the invention has the advantages that water penetration is high and intensity is high.
Description
Technical field
The present invention relates to technical field of concrete, more specifically, it relates to a kind of high intensity pervious concrete and its system
Preparation Method.
Background technique
With the development of social economy and the process of urban construction, the earth's surface of modern city is gradually by the room of armored concrete
Room building and fluid-tight road surface are covered, and compared with natural soil, modernization earth's surface carrys out a series of problem to urban belt,
It is mainly shown as the following aspects: fluid-tight road surface hinders the lower infiltration of rainwater, so that supplement of the rainwater to underground water
It is blocked, along with the overdraft of underground water, urban ground is easy to produce sinking.Traditional closely knit road surfaces, tyre noise
Greatly.Traditional cities road surface is water-tight structure, and rainwater is excluded by road table, and discharge capacity is limited, when encountering heavy rain or heavy rain,
Rainwater is easy to collect on road surface, largely concentrates on motor vehicle and cycle track, leads to a wide range of ponding in road surface.
To alleviate the above problems, the water penetration for improving road surface is urgent problem.In the prior art, application No. is
The Chinese invention patent application file of CN20181066405.2 discloses a kind of pervious concrete and preparation method thereof, including
One component, the second component, third component and the 4th component, by weight, first component include: 15-20 parts of water, hydrophobic
0.01-0.05 parts of modified polyacrylamide, 0.2-0.4 parts of lotus leaf hydrophobing agent；Second component includes: coarse aggregate 120-140
Part, 40-60 parts of cement；The partial size of the coarse aggregate is 6-12mm；The third component includes: 1-2.5 parts of adhesive, early strength agent
0.1-0.3 parts；4th component includes: 0.3-0.6 parts of nano silica, and 1-1.8 parts of organic silicon emulsion, fluorine-containing
0.3-0.6 parts of lotion.
Existing this pervious concrete has excellent permeable effect, but after being formed because of concrete hardening, because of inside
Hole is more, causes concrete quality lighter, and intensity is poor, and therefore, for this disadvantage, R & D intensity is high and good water permeability
Concrete is problem to be solved.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of permeable coagulation of high intensity
Soil, has the advantages that good water permeability and intensity is high.
Second object of the present invention is to provide a kind of preparation method of high-intensitive pervious concrete, has and prepare
Concrete have the advantages that intensity is high and good water permeability.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of high intensity pervious concrete, packet
Component containing following parts by weight: 260-320 parts of cement, 35-50 parts of sands, 800-1000 parts of stones, 100-110 parts of water, 5.6-
8.6 parts of adhesives, 1-5 parts of hydrophobically modified polyacrylamides, 2-5 parts of water-reducing agents, 200-300 parts of permeable aggregates, 300-400 parts of increasings
Strong agent, 5-10 parts of toughened fibers；
The permeable aggregate is mixed by diatomite, lotus leaf hydrophobing agent and the active carbon that mass ratio is 1:0.6-1:1-2；
The toughened fiber is mixed by the microcrystalline cellulose that mass ratio is 1:2-3 and ramee.
By using above-mentioned technical proposal, by adding permeable aggregate, reinforcing agent and toughened fiber, three cooperates,
Good water permeability and the high concrete of intensity is made, wherein the basic overlap joint skeleton of stone and sand as concrete mortar, and
The dosage of sand is few, and the dosage of stone is more, and the mutual overlap joint between stone is built into permeable gap, promotes the draining of concrete
Property, and the partial noise on road surface can be absorbed in permeable gap, play the role of absorbing sound and lowering noise, sand, cement and stone with
After water mixes and stirs, slurry is formed, is wrapped in the outside of stone and sand, increases the adhesiveness between stone and sand, and modified
Hydrophobic polyacrylamide, water and adhesive, it helps the viscosity for increasing slurry is improved, the bond strength between aggregate is increased,
During concrete formation, the resistance of slurry flowing is increased, helps to reduce slurry sinking, to reduce slurry to coagulation
The blocking of the hole of native bottom improves the permeable effect of concrete；The addition of permeable aggregate and reinforcing agent can reduce cement
Dosage reduces the heat of hydration of concrete, and permeable aggregate can enhance the water penetration of concrete, improves the drainage effect of concrete,
Wherein diatomite and active carbon have that porosity is big, absorbability is strong, permeability is strong, chemical property is stable, wear-resisting, heat-resisting etc. special
Point, since it has biggish volume, and main component is silicic acid matter, and there are countless pores on surface, can be conducive to moisture and pass through,
It is flowed out convenient for the moisture on ground, realizes the water penetration effect of concrete, lotus leaf hydrophobing agent is non-ionic lotion, in concrete grout
In body, so that the pore surface inside slurry is formed hydrophobic surface, slip over moisture quickly in the hole of inside concrete, accelerates saturating
The permeability time of water coagulation soil, improves permeable effect.
Reinforcing agent and toughened fiber can increase the intensity of concrete, wherein in toughened fiber microcrystalline cellulose have it is high
Mechanical moduli, can effectively solve the problem that dispersion is reunited, and microcrystalline cellulose can generate many needle bar shape crystal between cement
Structure realizes the filling and bridge formation function of rigid particles, prevents the extension of blind crack, and resistance to deformation improves toughness, and ramie is fine
Dimension has good sucting wet air permeability, at the same in ramee containing give repeated exhortations, the beneficial elements such as pyrimidine, purine, have it is antibacterial, remove
Smelly, moisture absorption, ventilative function, exclusive active cavity lead sweat fibre structure, in the moisture penetration to cavity that can make sucking
And quickly export, when moisture is fallen on concrete, ramee can absorb rapidly moisture, the water penetration of concrete is improved,
And ramee is very tough and tensile, strength is big and ductility is small, to improve the intensity and toughness of concrete.
Further, the reinforcing agent comprises the following components in parts by weight: 2-4 parts of hollow glass micropearls, 5-8 parts of nanometers two
Silica, 6-10 part porous polymer bead, 3-7 parts of organic silicon emulsions, 10-15 parts of haydites, 1-5 parts of silicon carbide whiskers, 3-6 parts
Water-based polyurethane-acrylate emulsion.
By using above-mentioned technical proposal, nano silica and organic silicon emulsion have lower surface energy, aqueous poly-
Urethane-acrylic acid ester emulsion combines the advantages of both polyaminoester emulsion and polypropylene acid value lotion, applies with excellent surface
Film properties introduce organic silicon emulsion and nano-silicon dioxide particle in water-based polyurethane-acrylate emulsion, can significantly mention
The hydrophobic properties of the surface of high film；Haydite internal structure is in fine and closely woven honeycomb micropore, and water absorption rate is low, but its intensity is high, durability
Can be excellent with anti-freezing property, the density of hollow glass micropearl is smaller compared with glass microballoon, has the advantages that compression strength is high, macromolecule
The inside of porous microsphere has three-dimensional space solid pore structure, has high mechanical strength, the good advantage of thermal stability, silicon carbide whisker
Must have excellent high temperature resistant, wear-resisting property, and hardness is high, modulus is big, and tensile strength is big, makes aqueous polyurethane-acrylate
Lotion can form one layer of film with hydrophobic function on the surface of haydite, hollow glass micropearl and porous polymer bead,
It can be improved the water penetration of haydite, hollow glass micropearl and porous polymer bead.
Further, the reinforcing agent is prepared by following methods: (1) by hollow glass micropearl, high-molecular porous micro-
Ball, silicon carbide whisker and haydite are put into reactor, are stirred evenly under the revolving speed of 400-600r/min；(2) by nano-silica
SiClx, organic silicon emulsion and water-based polyurethane-acrylate emulsion stir 1-2 hours at 80-100 DEG C；(3) by step (1)
It is uniformly mixed with step (2) gains, obtains reinforcing agent.
By using above-mentioned technical proposal, first by hollow glass micropearl, porous polymer bead, silicon carbide whisker and pottery
Grain, is stirred mixing, then organic silicon emulsion, nano silica and water-based polyurethane-acrylate emulsion are mixed,
Improve the hydrophobic properties of the surface of water-based polyurethane-acrylate emulsion, then by water-based polyurethane-acrylate emulsion and haydite,
Hollow glass micropearl, porous polymer bead and silicon carbide whisker are uniformly mixed, more in haydite, hollow glass micropearl, macromolecule
Hole microballoon and silicon carbide whisker surface coat a coating film, improve haydite, hollow glass micropearl, porous polymer bead and carbonization
The hydrophobicity of silicon wafer palpus makes moisture in inside concrete quickly through reduction moisture is stopped in inside concrete, and then is improved mixed
Coagulate the water penetration of soil.
Further, described adhesive is the hydroxypropyl methyl cellulose and Pluronic F-127 that mass ratio is 1:1-2.
By using above-mentioned technical proposal, hydroxypropyl methyl cellulose can be improved the dispersibility of concrete, improve coagulation
The adhesive property of soil paste body and stone surface improves the intensity of concrete, and the cementation between cement slurry and stone increases
Qiang Hou is conducive to the sinking for slowing down cement slurry, improves the water penetration of concrete.
Further, the water-reducing agent is the naphthalene series high-efficiency water-reducing agent and maleic anhydride type carboxylic acid that mass ratio is 1:1-1.5
Water-reducing agent.
By using above-mentioned technical proposal, naphthalene water reducer and maleic anhydride type carboxylic acid water reducer have cement good
Peptizaiton and plastication disperse cement in water more uniform, reduce the dosage of water, so that concrete has preferably
Workability and homogeneity.
Further, the partial size of the stone is 5-10mm continuous grading.
By using above-mentioned technical proposal, use the stone of 5-10mm continuous grading as coarse aggregate, the stone of different-grain diameter
Son accumulation forms the overlap joint skeleton of dense packing effect, reduces porosity, improves the intensity of concrete.
Further, high-intensitive pervious concrete further includes ingredient reinforcing fiber, and the dosage of the reinforcing fiber is 10-15
Part, the reinforcing fiber includes the bamboo fibre and carbon fiber that mass ratio is 1:2-3.
By using above-mentioned technical proposal, use bamboo fibre and carbon fiber as the reinforcing fiber of concrete, bamboo fibre tool
There are good gas permeability, instant water absorption, stronger wearability, and has the function of natural antibacterial, antibacterial, deodorization, bamboo fibre
Cross section it is uneven, be covered with the hole of similar ellipse, capillary effect is strong, can be in transient absorption and evaporation water, can
Guiding role is played with the moisture to ground, so that moisture is absorbed into the inside of concrete from concrete surface rapidly, and pass through
Diatomite and active carbon are absorbed, and achieve the effect that concrete drains rapidly, at the same bamboo fibre and ramee antibacterial and
Bactericidal effect can reduce the bacterium bred under hygrothermal environment, improve the organic materials such as bamboo fibre, ramee, carbon fiber
Service life；Carbon fiber is high intensity, the new fiber materials of high modulus fibre of a kind of phosphorus content 95% or more, carbon fiber
Quality is lighter than metallic aluminium, but intensity is higher than steel, and density is low, fatigue durability and good corrosion resistance, shape have significant
Anisotropy it is soft, the strength and toughness of concrete can be improved, to improve the mechanical property of concrete.
Further, the length of the bamboo fibre is 6-8mm, fiber number 1.57-1.7D.
By using above-mentioned technical proposal, degree of scatter of the bamboo fibre in concrete can be improved, increase bamboo fibre and
The dispersion performance of other raw material.
Further, the length of the carbon fiber is 8-10mm, fiber number 1.5-2.0D.
By using above-mentioned technical proposal, degree of scatter of the carbon fiber in concrete can be improved, increase carbon fiber and
The dispersion performance of other raw material.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of high intensity pervious concrete
Preparation method, comprising the following steps:
First mixture preparation: by cement, sand, stone, permeable aggregate, reinforcing fiber, toughened fiber and hydrophobically modified poly- third
Acrylamide is sufficiently mixed uniformly, obtains the first mixture；
The preparation of second mixture: adhesive, water-reducing agent and reinforcing agent are added to the water, and are uniformly mixed, are obtained the second mixture；
Finished product preparation: the first mixture is added in the second mixture, is sufficiently mixed uniformly, is obtained high-intensitive pervious concrete.
By using above-mentioned technical proposal, first by cement, sand, stone, permeable aggregate, reinforcing fiber and toughened fiber
And hydrophobically modified polyacrylamide is mixed, and is conducive to the dispersion effect for improving raw material, then by adhesive, water-reducing agent and increasing
Strong agent is mixed with water, improves the degree of scatter of adhesive, reinforcing agent and water-reducing agent.
In conclusion the invention has the following advantages:
The first, due to the present invention using diatomite, lotus leaf hydrophobing agent and active carbon as permeable aggregate, lotus leaf hydrophobing agent can be
Inside concrete pore surface forms hydrophobic surface, slips over moisture quickly in inside concrete, and by with multi-pore structure
Diatomite and activated carbon adsorption improve permeable effect to accelerate the permeability time of pervious concrete.
The second, hollow glass micropearl, porous polymer bead, silicon carbide whisker and haydite are in reinforcing agent in the present invention
High mechanical strength and substance with high hardness, with the aqueous polyurethane-acrylate for mixing nano silica and organic silicon emulsion
After lotion mixing, one layer of aqueous polyurethane-is coated on hollow glass micropearl, porous polymer bead, silicon carbide whisker and haydite
Acrylate film, making hollow glass micropearl, porous polymer bead, silicon carbide whisker and haydite, not only intensity is high, but also has
There is good hydrophobicity, when moisture enters inside concrete, can quickly be skidded off along film, to improve the permeable of concrete
Property and intensity.
Third, the present invention are since using microcrystalline cellulose and ramee, as toughened fiber, microcrystalline cellulose is in coagulation
It is filled and builds bridge as rigid particles in soil, prevent the generation of blind crack, improve toughness, resistance to deformation, ramee
Exclusive active cavity leads sweat fibre structure, can make in the moisture penetration of sucking to cavity and quickly to export, have good
Sucting wet air permeability, and ramee is very tough and tensile, strength is big and ductility is small, so ramee can not only improve concrete
Water permeability, moreover it is possible to improve the intensity and toughness of concrete.
4th, the present invention is used as reinforcing fiber using bamboo fibre and carbon fiber, wherein bamboo fibre with good gas permeability,
Instant water absorption, cross section is uneven, is covered with hole, gram transient absorption and evaporation water, can be to concrete upper surface
Moisture play guiding role, so that moisture is absorbed into inside concrete from concrete surface rapidly, by diatomite and active carbon
Absorption, and carbon fiber quality is lighter than metallic aluminium, but intensity is higher than steel, and density is low, fatigue durability and good corrosion resistance,
Shape has significant anisotropy soft, the strength and toughness of concrete can be improved, to improve the mechanical property of concrete
Energy.
5th, bamboo fibre and ramee all have antibacterial, antibacterial and deodorization function in the present invention, can reduce damp and hot
Bacteria breed amount under environment improves the service life of bamboo fibre, carbon fiber, microcrystalline cellulose and ramee.
6th, it uses sand and the stone of 5-10mm continuous grading as overlap joint aggregate in the present invention, conveniently fills up hole,
It is built into good water permeability and the overlap joint skeleton with some strength.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The preparation example 1-3 of reinforcing agent
Water-based polyurethane-acrylate emulsion is selected from the JAZO type water of Nanjing Jia Zhong Chemical Industry Science Co., Ltd in following preparation example
Property polyurethane-acrylic ester emulsion, organic silicon emulsion be ESASIL505 organic silicon emulsion of the Shanghai to haze Chemical Co., Ltd.,
Similar other type products can also be used in above-mentioned every kind of component.
Preparation example 1:(1) according to the proportion in table 1,2 kilograms by hollow glass micropearl, 6 kilograms of porous polymer beads, 1
Kilogram silicon carbide whisker and 10 kilograms of haydites are put into reactor, are stirred evenly under the revolving speed of 400r/min；Wherein hollow glass
Glass microballon partial size is 10 μm, and 1 μm of wall thickness, the diameter of porous polymer bead is 10 μm, and the length of silicon carbide whisker is 5nm, directly
Diameter is 1nm, and haydite is the continuous grading of 5-10mm, bulk density 650kg/m3；
(2) by 5 kilograms of nano silicas, 3 kilograms of organic silicon emulsions and 3 kilograms of water-based polyurethane-acrylate emulsions, 80
It is stirred 1 hour at DEG C；
(3) step (1) and step (2) gains are uniformly mixed, obtain reinforcing agent.
The raw material proportioning of reinforcing agent in 1 preparation example 1-3 of table
Preparation example 2:(1) according to the proportion in table 1,3 kilograms by hollow glass micropearl, 8 kilograms of porous polymer beads, 3 kilograms
Silicon carbide whisker and 13 kilograms of haydites are put into reactor, are stirred evenly under the revolving speed of 500r/min；Wherein hollow glass is micro-
Bead diameter is 20 μm, and 3 μm of wall thickness, the diameter of porous polymer bead is 15 μm, and the length of silicon carbide whisker is 10nm, and diameter is
3nm, haydite are the continuous grading of 5-10mm, bulk density 700kg/m3；
(2) by 6 kilograms of nano silicas, 5 kilograms of organic silicon emulsions and 5 kilograms of water-based polyurethane-acrylate emulsions, 90
It is stirred 1.5 hours at DEG C；
(3) step (1) and step (2) gains are uniformly mixed, obtain reinforcing agent.
Preparation example 3:(1) according to the proportion in table 1,4 kilograms by hollow glass micropearl, 10 kilograms of porous polymer beads, 5
Kilogram silicon carbide whisker and 15 kilograms of haydites are put into reactor, are stirred evenly under the revolving speed of 600r/min；Wherein hollow glass
Glass microballon partial size is 30 μm, and 5 μm of wall thickness, the diameter of porous polymer bead is 20 μm, and the length of silicon carbide whisker is 15nm, directly
Diameter is 5nm, and haydite is the continuous grading of 5-10mm, bulk density 750kg/m3；
(2) by 8 kilograms of nano silicas, 7 kilograms of organic silicon emulsions and 6 kilograms of water-based polyurethane-acrylate emulsions,
It is stirred 2 hours at 100 DEG C；
(3) step (1) and step (2) gains are uniformly mixed, obtain reinforcing agent.
Embodiment
Lotus leaf hydrophobing agent is purchased from Zhengzhou Yu Xiang chemical products Co., Ltd in following embodiment；Naphthalene series high-efficiency water-reducing agent choosing
From the sh-ll type naphthalene series high-efficiency water-reducing agent of Shanghai Yao Qian building coating Co., Ltd, maleic anhydride type carboxylic acid water reducer is selected from thoroughfare
The XF-35 type high-efficiency water-reducing agent of poly-carboxylic acid of state Xi Weimai construction material Science and Technology Ltd., above-mentioned every kind of component can also be used similar
Other type products.
A kind of embodiment 1: preparation method of high intensity pervious concrete, comprising the following steps:
First mixture preparation: according to the proportion in table 2, by 260 kilograms of cement, 35 kilograms of sands, 800 kilograms of stones, 200,000
Gram permeable aggregate, 10 kilograms of reinforcing fibers, 5 kilograms of toughened fibers and 1 kilogram of hydrophobically modified polyacrylamide are sufficiently mixed uniformly,
Obtain the first mixture；Wherein cement is P.O42.5 grades of silicate concretes, and sand is middle sand, fineness modulus 2.5, accumulation
Density is 1.60g/cm3, stone is the continuous grading that partial size is 5-10mm, and the apparent density of stone is 2830kg/m3, loose heap
Product porosity is 45%, loose bulk density 1560kg/m3, diatomite, lotus leaf that permeable aggregate is 1:0.6:1 by mass ratio
Hydrophobing agent and active carbon mix, and reinforcing fiber includes the bamboo fibre and carbon fiber that mass ratio is 1:2, and the length of bamboo fibre is
6mm, fiber number 1.57D, the length of carbon fiber are 8mm, fiber number 1.5D, the microcrystalline cellulose that toughened fiber is 1:2 by mass ratio
Element and ramee, the length of microcrystalline cellulose are 30 μm, and diameter is 5 μm rodlike, and the length of ramee is 60mm, diameter
It is 20 μm；
The preparation of second mixture: 5.6 kilograms of adhesives, 2 kilograms of water-reducing agents and 300 kilograms of reinforcing agents are added to the water, and are mixed
Uniformly, the second mixture is obtained；Wherein adhesive is the hydroxypropyl methyl cellulose and Pluronic F-127 that mass ratio is 1:1, is subtracted
Aqua is that the naphthalene series high-efficiency water-reducing agent of 1:1 and maleic anhydride type carboxylic acid water reducer, reinforcing agent are prepared by preparation example 1；
Finished product preparation: the first mixture is added in the second mixture, is sufficiently mixed uniformly, is obtained high-intensitive pervious concrete.
Embodiment 2: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, raw material proportioning is such as
Shown in table 1, sand is middle sand, fineness modulus 2.8, bulk density 1.65g/cm3, stone is that partial size is the continuous of 5-10mm
Gradation, the apparent density of stone are 2860kg/m3, loosely-packed porosity is 48%, loose bulk density 1600kg/m3, increase
Strong fiber includes the bamboo fibre and carbon fiber that mass ratio is 1:2.4, and the length of bamboo fibre is 6.5mm, fiber number 1.62D, carbon fiber
The length of dimension is 8.5mm, fiber number 1.7D, the microcrystalline cellulose and ramee that toughened fiber is 1:2.4 by mass ratio, crystallite
The length of cellulose is 35 μm, and diameter is 8 μm rodlike, and the length of ramee is 65mm, and diameter is 25 μm；Adhesive is matter
Amount is than the hydroxypropyl methyl cellulose and Pluronic F-127 for 1:1.4, naphthalene series high-efficiency water-reducing agent and Malaysia that water-reducing agent is 1:1.2
Acid anhydrides type carboxylic acid water reducer, reinforcing agent are prepared by preparation example 2.
Embodiment 3: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, raw material proportioning is such as
Shown in table 1, sand is middle sand, fineness modulus 2.9, bulk density 1.70g/cm3, stone is that partial size is the continuous of 5-10mm
Gradation, the apparent density of stone are 2890kg/m3, loosely-packed porosity is 49%, loose bulk density 1650kg/m3, increase
Strong fiber includes the bamboo fibre and carbon fiber that mass ratio is 1:2.8, and the length of bamboo fibre is 7.5mm, fiber number 1.66D, carbon fiber
The length of dimension is 9mm, fiber number 1.8D, the microcrystalline cellulose and ramee that toughened fiber is 1:2.8 by mass ratio, crystallite fibre
The length of dimension element is 40 μm, and diameter is 10 μm rodlike, and the length of ramee is 70mm, and diameter is 30 μm；Adhesive is matter
Amount is than the hydroxypropyl methyl cellulose and Pluronic F-127 for 1:1.8, naphthalene series high-efficiency water-reducing agent and Malaysia that water-reducing agent is 1:1.4
Acid anhydrides type carboxylic acid water reducer, reinforcing agent are prepared by preparation example 3.
Embodiment 4: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, raw material proportioning is such as
Shown in table 1, sand is middle sand, fineness modulus 3.0, bulk density 1.75g/cm3, stone is that partial size is the continuous of 5-10mm
Gradation, the apparent density of stone are 2900kg/m3, loosely-packed porosity is 50%, loose bulk density 1700kg/m3, increase
Strong fiber includes the bamboo fibre and carbon fiber that mass ratio is 1:3, and the length of bamboo fibre is 8mm, fiber number 1.7D, the length of carbon fiber
Spending is 10mm, fiber number 2.0D, the microcrystalline cellulose and ramee that toughened fiber is 1:3 by mass ratio, microcrystalline cellulose
Length is 45 μm, and diameter is 12 μm rodlike, and the length of ramee is 75mm, and diameter is 35 μm；Adhesive is that mass ratio is
The hydroxypropyl methyl cellulose and Pluronic F-127 of 1:2, water-reducing agent are the naphthalene series high-efficiency water-reducing agent and maleic anhydride type carboxylic of 1:1.5
Sour water-reducing agent, reinforcing agent are prepared by preparation example 3.
The raw material proportioning of high-intensitive pervious concrete in 2 embodiment 1-4 of table
Embodiment 5: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, permeable aggregate is by quality
It is mixed than diatomite, lotus leaf hydrophobing agent and the active carbon for 1:0.8:1.5.
Embodiment 6: it is a kind of high intensity pervious concrete preparation method, the difference from embodiment 1 is that, permeable aggregate by
Mass ratio is that diatomite, lotus leaf hydrophobing agent and the active carbon of 1:1:2 mixes.
Comparative example
Comparative example 1: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, it is free of in permeable aggregate
Diatomite.
Comparative example 2: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, in permeable aggregate
Without active carbon.
Comparative example 3: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, in permeable aggregate
Without lotus leaf hydrophobing agent.
Comparative example 4: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, in permeable aggregate
The mass ratio of diatomite, lotus leaf hydrophobing agent and active carbon is 1:0.4:0.5.
Comparative example 5: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, in permeable aggregate
The mass ratio of diatomite, lotus leaf hydrophobing agent and active carbon is 1:1.4:2.5.
Comparative example 6: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, it is free of in raw material
Toughened fiber.
Comparative example 7: a kind of preparation method of high intensity pervious concrete, the difference from embodiment 1 is that, it is free of in raw material
Reinforcing agent.
Comparative example 8: using Authorization Notice No. to be used as control for the embodiment 1 of CN101857403B pairs of Chinese patent,
A kind of pervious concrete and preparation method thereof is disclosed, (1) prepares composite gelled material first；To prepare 100kg plural gel
For material.Cement 75kg, concrete ash 22kg are weighed respectively, styrene-propene phenol latex powder 3kg is sequentially added into mixing machine,
It is sufficiently stirred, obtains composite gelled material.It is spare.(2), pervious concrete is prepared；Above-mentioned composite gelled material is weighed respectively
200kg, Aggregate of recycled concrete 714kg, is put into blender and stirs evenly, and adds water 86kg, then stir, i.e.,
Casting, smooth and maintenance processes can be achieved, pervious concrete is made.
Performance detection test
High-intensitive pervious concrete slurry is prepared according to the method in embodiment 1-6 and in comparative example 1-8, concrete mortar is put
Enter in 150mm × 150mm × 150mm mold, mold is put and is conserved under the same conditions, test cube is made, by implementing
Test cube made from example 1-6 marked as sample 1-6, the test cube as made from comparative example 1-8 marked as 7-14, according to
Following methods test the properties of concrete, and with each in CJJ/T135-2009 " pervious concrete pavement technical regulation "
Performance indicator is used as testing standard, and wherein compression strength and flexural strength are subject to the performance requirement of C30 strength grade, tests
The results are shown in Table 3:
1, compression strength and bend resistance intensity: according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete "
It is tested；
2, the test cube of sample 1-14 porosity: is impregnated to the quality m after testing each sample immersion for 24 hours in water1, it
Each sample is air-dried afterwards, tests the quality m of each sample2, porosity P, the P=[1- of concrete test block are calculated according to the following formula
(m2-m1)/V × ρ] × 100%, in formula: V is the volume of test cube, and ρ is the density of water；
3, coefficient of permeability: according to " fixed height of water level method " test；
4, anti-freezing property is tested: for 24 hours by the test cube immersion of sample 1-14, surface being dried, compression strength P is tested1With
Quality m3, it is put into quick refrigerator and carries out freezing-thawing cycles test, after 25 circulations, tests compression strength P2And m4, by P1/P2
× 100% ratio is as the coefficient of resistance to jelly, and with (P1-P2)/P1× 100% calculates compression strength loss rate after 25 freeze thawing resistances,
With (m3-m4)/m3× 100% calculates mass loss rate after 25 freeze thawing resistances.
The performance test results of high-intensitive pervious concrete in table 3 embodiment 1-6 and comparative example 1-8
The concrete prepared it can be seen from data in table 3 according to method in embodiment 1-6 is in 28 days compression strength in 56.7-
Between 57.5MPa, flexural strength is higher than CJJ/T135-2009 " pervious concrete pavement technology rule between 17.8-18.9MPa
Journey " in requirement, porosity and permeability rate are higher, have ventilative well and water permeability, and after 25 freeze thawing, resistance to jelly
Coefficient is small, and compression strength and mass loss are small, has good anti-freezing property；Because making without addition diatomite in comparative example 1
The compression strength and flexural strength that obtain concrete are less than the numerical value in embodiment 1, and porosity and coefficient of permeability are small, and resistance to jelly is
Number, compression strength loss rate and mass loss rate are larger, illustrate that diatomite can increase the intensity of concrete, and improve coagulation
The water penetration and freezing and thawing performance of soil；Because being not added with active carbon in comparative example 2 so that the coefficient of permeability of concrete and porosity compared with
It is small, and freexing tolerance can it is poor, illustrate that active carbon can be improved the intensity and freexing tolerance energy of concrete, and make concrete have compared with
Good water penetration；It is not added with lotus leaf hydrophobing agent in comparative example 3, compression strength, flexural strength and the porosity of concrete and resistance to
Freeze performance compared with Example 1 without large change, but coefficient of permeability is smaller compared with Example 1, illustrates that lotus leaf hydrophobing agent can
Improve the water penetration of concrete；Because in permeable aggregate, the content of lotus leaf hydrophobing agent and active carbon is less, concrete in comparative example 4
Compression strength, flexural strength, freexing tolerance can it is poor, and the coefficient of permeability of concrete and porosity compared with Example 1 also compared with
It is small, illustrate that lotus leaf hydrophobing agent, active carbon and diatomite cooperate, can be improved the intensity of concrete, freeze-thaw resistance and thoroughly
It is aqueous；Because the content of lotus leaf hydrophobing agent and active carbon is larger in comparative example 5, compared with Example 1, the performance of concrete is without much
It influences, to save cost, makes the mass ratio 1:0.6-1:1-2 of diatomite, lotus leaf hydrophobing agent and active carbon；In comparative example 6 because
Without toughener, the compression strength of concrete, flexural strength are poor, and coefficient of permeability and porosity, illustrate toughener energy
Enough increase the intensity and toughness of concrete, and can be improved the water penetration of concrete；In comparative example 7 in the raw material of concrete not
Reinforcing agent is added, the compression strength of concrete test block, flexural strength are respectively less than the numerical value in embodiment 1, and porosity and permeable
Coefficient is small, illustrates that reinforcing agent can be improved the intensity and toughness of concrete, and can be improved the water penetration and freeze-thawing resistant of concrete
Property.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of high intensity pervious concrete, which is characterized in that contain the following parts by weight: 260-320 parts of cement, 35-
50 parts of sands, 800-1000 parts of stones, 100-110 parts of water, 5.6-8.6 parts of adhesives, 1-5 parts of hydrophobically modified polyacrylamides,
2-5 parts of water-reducing agents, 200-300 parts of permeable aggregates, 300-400 parts of reinforcing agents, 5-10 parts of toughened fibers；
The permeable aggregate is mixed by diatomite, lotus leaf hydrophobing agent and the active carbon that mass ratio is 1:0.6-1:1-2；
The toughened fiber is mixed by the microcrystalline cellulose that mass ratio is 1:2-3 and ramee.
2. high intensity pervious concrete according to claim 1, which is characterized in that the reinforcing agent includes following parts by weight
Component: 2-4 parts of hollow glass micropearls, 5-8 parts of nano silicas, 6-10 parts of porous polymer beads, 3-7 parts of organosilicons cream
Liquid, 10-15 part haydite, 1-5 parts of silicon carbide whiskers, 3-6 parts of water-based polyurethane-acrylate emulsions.
3. high intensity pervious concrete according to claim 2, which is characterized in that the reinforcing agent is prepared by following methods
It forms: (1) hollow glass micropearl, porous polymer bead, silicon carbide whisker and haydite being put into reactor, in 400-
It is stirred evenly under the revolving speed of 600r/min；(2) by nano silica, organic silicon emulsion and aqueous polyurethane-acrylate cream
Liquid stirs 1-2 hours at 80-100 DEG C；(3) step (1) and step (2) gains are uniformly mixed, obtain reinforcing agent.
4. high intensity pervious concrete according to claim 1, which is characterized in that described adhesive is that mass ratio is 1:1-
2 hydroxypropyl methyl cellulose and Pluronic F-127.
5. high intensity pervious concrete according to claim 1, which is characterized in that the water-reducing agent is that mass ratio is 1:1-
1.5 naphthalene series high-efficiency water-reducing agent and maleic anhydride type carboxylic acid water reducer.
6. high intensity pervious concrete according to claim 1, which is characterized in that the partial size of the stone is 5-10mm company
Continuous gradation.
7. high intensity pervious concrete according to claim 1, which is characterized in that high-intensitive pervious concrete further includes into
Divide reinforcing fiber, the dosage of the reinforcing fiber is 10-15 parts, and reinforcing fiber includes the bamboo fibre and carbon that mass ratio is 1:2-3
Fiber.
8. high intensity pervious concrete according to claim 7, which is characterized in that the length of the bamboo fibre is 6-8mm,
Fiber number is 1.57-1.7D.
9. high intensity pervious concrete according to claim 7, which is characterized in that the length of the carbon fiber is 8-
10mm, fiber number 1.5-2.0D.
10. a kind of preparation method of -9 any high-intensitive pervious concretes according to claim 1, which is characterized in that packet
Include following steps:
First mixture preparation: by cement, sand, stone, permeable aggregate, reinforcing fiber, toughened fiber and hydrophobically modified poly- third
Acrylamide is sufficiently mixed uniformly, obtains the first mixture；
The preparation of second mixture: adhesive, water-reducing agent and reinforcing agent are added to the water, and are uniformly mixed, are obtained the second mixture；
Finished product preparation: the first mixture is added in the second mixture, is sufficiently mixed uniformly, is obtained high-intensitive pervious concrete.
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