CN110330293A - A kind of pervious concrete and its processing technology - Google Patents
A kind of pervious concrete and its processing technology Download PDFInfo
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- CN110330293A CN110330293A CN201910609281.3A CN201910609281A CN110330293A CN 110330293 A CN110330293 A CN 110330293A CN 201910609281 A CN201910609281 A CN 201910609281A CN 110330293 A CN110330293 A CN 110330293A
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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
-
- 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
Abstract
The present invention relates to the technical fields of concrete processing, more particularly to a kind of pervious concrete and its processing technology, it includes the raw material components of following parts by weight: 200-350 parts of cementitious material, 800-1200 parts of coarse aggregate, 10-25 parts of fly ash float, 0.2-1 parts of additive and 90-130 parts of water, the additive is by including that the raw material of following parts by weight is formulated: 3-15 parts of polycarboxylic acids mother liquor, 1.5-3.5 parts of glucose, 2-5 parts and water 3-6 parts of casein；The pervious concrete that the present invention processes, water permeability is excellent, and load-carrying properties are good, and 28d compression strength is up to 48.0 MPa, compression strength loss rate minimum 12.0% after 25 Frozen-thawed cycleds, mass loss rate minimum 2.5% after 25 Frozen-thawed cycleds.
Description
Technical field
The present invention relates to the technical fields of concrete processing, and in particular to a kind of pervious concrete and its processing technology.
Background technique
Pervious concrete is also known as celluar concrete, non-fine concrete, permeable terrace, usually by aggregate, cement, reinforcing agent
With a kind of porous light concrete made of water mixing.Fine aggregate is free of in the raw material components of pervious concrete, by coarse aggregate
Surface cladding a thin layer cement slurry mutually bonds and forms the equally distributed honeycomb structure in hole, has ventilative, permeable and again
Measure light feature.Pervious concrete can allow rainwater to flow into underground, effective recharge of groundwater, under alleviating the level of ground water in city sharply
Some Urban Environmental Problems of drop etc.；The pollution on the environments such as the oil compounds on ground danger can be effectively eliminated
Evil；Meanwhile pervious concrete still protects underground water, maintaining ecological balance, can alleviate the excellent of urban heat land effect and mat formation
Material.To sum up, pervious concrete is a kind of benign development for being conducive to environment for human survival and urban rainwater management and water pollution
The green product of the work such as prevention and treatment has special significance.
Due to not adding fine aggregate in pervious concrete, cement slurry is wrapped up by coarse aggregate surface and forms porous structure, with
Meet its water permeability, therefore, the mobile performance of pervious concrete and to mix and stir performance poor stirs electricity during causing it to mix and stir
Machine is painstaking, and abrasion and energy consumption are larger；It is difficult to automatically flow into tank car because of poor fluidity when charging after mixing and stirring, leads to cargo handling process
It needs to further increase energy consumption by external force；Fresh concrete be packed into tank car after, during transportation jolt, vibrate or
It is easier to slurry sinking occur under concrete self gravity, blocks hole.
In order to solve the above problem of pervious concrete, the Chinese patent application of CN 201810821525.X discloses one
Kind pervious concrete special additive, each component is by mass percentage are as follows: and water-reducing agent 10%~12%, slump retaining agent 8%~
10%, retarder 3.5%~4.5%, cellulose ether 0.05%~0.1%, viscosity improver 0.8%~1.3%, hydrophilic resin
0.5%~1.0%, surfactant 0.01%~0.05%, rubber powder 4%~4.5%, surplus are water；This application passes through addition
Water-reducing agent and retarder, can the opposite workability for improving concrete and handling ease for operation；It is viscous that increase is all had by addition
Cellulose ether, viscosity improver and the rubber powder of degree effect, the opposite caking property improved between concrete rubber cement and aggregate, thus
The flowing velocity that can delay slurry reduces the harm of the blocking hole phenomenon in transportational process.
But in above-mentioned patent application, although the poly carboxylic acid series water reducer of addition can play lubrication to cementitious material and make
With, assign the certain workability of concrete batching system and convenient for mixing and stirring and charge and discharge operations, but the carboxylic in poly carboxylic acid series water reducer
Calcium ion in acid ion and cement acts on forming complex compound, it is suppressed that the formation of calcium hydroxide crystallization, to inhibit water
Muddy water, and be not easy spontaneous to discharge calcium ion.At present in the pervious concrete added with poly carboxylic acid series water reducer
There are about the hydrated reaction of cement of 15%-25% is insufficient, so that the adhesive property and intensity of cement cannot be given full play to, make permeable
It is smaller and problem of Cracking occur that the cohesive force between coarse aggregate often occurs after construction in concrete, influences the carrying of pervious concrete
Power.
Summary of the invention
The first purpose of this invention is to provide a kind of pervious concrete, can get well with workability and compression strength is high
Advantage.
The first purpose of this invention is achieved through the following technical solutions:
A kind of pervious concrete comprising the raw material components of following parts by weight: 200-350 parts of cementitious material, coarse aggregate 800-
1200 parts, 10-25 parts of fly ash float, 0.2-1 parts of additive and 90-130 parts of water, the additive is by including following parts by weight
Raw material be formulated: 3-15 parts of polycarboxylic acids mother liquor, 1.5-3.5 parts of glucose, 2-5 parts of casein and water 3-6 parts.
By using above-mentioned technical proposal, fly ash float chemical component is based on silica and aluminum oxide
A kind of fly ash hollow ball is in canescence, and wall is thin hollow, very light in weight, bulk density 720kg/m3(heavy), 418.8kg/m3It is (light
Matter), about 0.1 millimeter of partial size, surface-closed and it is smooth, have that thermal conductivity is small, high-intensitive, wear-resisting, high temperature resistant, heat preservation insulation, resistance
The characteristics such as combustion；Fly ash float is dispersed in the netted mix of pervious concrete and cementitious material by additive
Together, play the role of filling skeleton；The thermal conductivity of fly ash float itself allows to reduce inside concrete simultaneously
Temperature becomes, and improves the anti-cracking ability of concrete.The addition of glucose in additive can increase additive to concrete batching system
Lubricating action, improve the viscosity and workability of pervious concrete.Casein, also known as casein, it can be with different type glue
Calcium binding in gel material forms soluble complex, improves the Yi Hexing of pervious concrete；After casein absorbs moisture
It can expand rapidly, and not combined between the molecule of casein itself, therefore casein can carry different type in expansion process
Calcium ion in cementitious material is sufficiently spread in mix.Polycarboxylic acids mother liquor then makes negative electrical charge on gel particles band, to make
Electrostatic repulsion is generated between gel particles and disperses gel particles, is inhibited the cohesion of gel particles, is increased gel particles
With the contact area of water；The casein of expansion carries calcium ion and is well dispersed in mix, tiles when mix is constructed
Afterwards, the contact area of mix and air greatly increases, after the hydrated cementitious in a part of gel particles, fully dispersed calcium from
Under the carrying of casein " chain reaction " occurs for son, promotes the abundant aquation of the cement in pervious concrete, improves permeable mixed
Coagulate the compression strength of soil.
Preferably, it includes the raw material components of following parts by weight: 250-300 parts of cementitious material, coarse aggregate 900-1100
Part, 15-20 parts of fly ash float, 0.4-0.8 parts of additive and 100-120 parts of water, the additive is by including following parts by weight
Raw material be formulated: 5-12 parts of polycarboxylic acids mother liquor, 2-3 parts of glucose, 3-4 parts of casein and water 4-5 parts.
Preferably, the additive is by including that the raw material of following parts by weight is formulated: 5-20 parts of polycarboxylic acids mother liquor, Portugal
1-3 parts of grape sugar, 3-5 parts of casein, 2.5-5 parts and water 2-8 parts of carboxymethyl chitosan.
By using above-mentioned technical proposal, carboxymethyl chitosan joined into additive, it is interior to contain-NH2,-OH etc.
The strong polar group with water affinity cooperates the-COOH polar group in polycarboxylic-acid mother liquor, passes through absorption, dispersion, lubrication etc.
Surface-active action provides further dispersion to gel particles, so that it is strong to being adhered for concrete skeleton to improve gel particles
Degree, improves the bearing capacity of concrete；By reducing the frictional resistance between gel particles, reduce gel particles and water termination from
By energy, to further increase the workability of fresh concrete.
Preferably, the additive is by including that the raw material of following parts by weight is formulated: 10-15 parts of polycarboxylic acids mother liquor,
1.5-2.5 parts of glucose, 3.5-4.5 parts of casein, 3-4.5 parts and water 3-6 parts of carboxymethyl chitosan.
Preferably, the additive is by including that the raw material of following parts by weight is formulated: 10-20 parts of polycarboxylic acids mother liquor,
1-3 parts of glucose, 2-5 parts of casein, 2-5 parts and water 8-15 parts of turkey red oil.
By using above-mentioned technical proposal, turkey red oil joined into additive, turkey red oil is yellow or palm fibre
Color stiff oily transparency liquid has excellent diffusivity and wetability, can introduce in concrete batching system suitably homogenous
And tiny bubble.Due to that can generate more gap in cement hydration process, tiny and uniform bubble introducing is improved to water
The diminishing peptizaiton of mud, reduces the free water content of cement slurry, and the average pore size after making hydrated cementitious reduces, it might even be possible to
Closed pore is formed inside cement after making hardening, to further improve the intensity of pervious concrete.
Preferably, the additive is by including that the raw material of following parts by weight is formulated: 12-18 parts of polycarboxylic acids mother liquor,
1.5-2.5 parts of glucose, 3-4 parts of casein, 3-4.5 parts and water 10-13 parts of turkey red oil.
Preferably, recycle-water of the water from cleaning concrete tank car and/or sieve from sand-stone separator obtains
Recycle-water, the solid content of the water is 6-8%.
By using above-mentioned technical proposal, a part can be remained after concrete transportation is complete, in tank car and is adhered on inner wall
Concrete, the part need be rinsed with water, thus guarantee the transport of lower batch concrete is not impacted.Cleaning
If solidliquid mixture direct emission will cause environmental pollution, and will cause a large amount of water resource waste every month.Applicant will
The solidliquid mixture of this part is after sandstone separation screening, and bulk stone sifts out recycling and continues with, and cementitious material is with water one
It after playing recycling, is handled by secondary settlement, chooses the raw water that the supernatant liquor that solid content is 6-8% is used as concrete processing,
It not only will not influence the performance of pervious concrete, but also reduce processing cost, every month can save 1,000,000 yuan or so
Water resource.
Preferably, the cementitious material includes cement and flyash, the weight of the flyash accounts for cementitious material gross weight
The 22-30% of amount.
By using above-mentioned technical proposal, flyash is one of biggish industrial residue of the current discharge capacity in China, with electric power
The flyash discharge capacity of industrial expansion, coal-burning power plant increases year by year.A large amount of flyash is untreated will to generate fugitive dust, dirt
Contaminate atmosphere；Silt up if being discharged into water system and will cause river, and toxic chemical substance therein can also cause damages to human body and biology,
Using flyash as the admixture of concrete, i.e. energy conservation and environmentally friendly, and the intensity of pervious concrete is not influenced.
Preferably, the coarse aggregate is the stone that partial size is 10-20mm, crush values 7.0%, clay content is not more than
0.6%.
By using above-mentioned technical proposal, the partial size for controlling stone and clay content, can be in equivalent weights no more than 0.6%
Stone in the case of, the opposite hardness and strength for improving stone, thus the opposite compression strength for improving concrete.
A second object of the present invention is to provide a kind of processing technologys of above-mentioned pervious concrete, by processing work as follows
Skill obtains:
The water of cementitious material, coarse aggregate and water gross weight 50% is added by above-mentioned parts by weight, is uniformly mixed, obtains mixture
A；Additive and fly ash float is added by above-mentioned parts by weight, is uniformly mixed, obtains mixture B；It is added into mixture A
The water of mixture B and surplus, are uniformly mixed, and obtain pervious concrete.
By using above-mentioned technical proposal, the water of cementitious material, coarse aggregate and half is first mixed to form preliminary mix
And object；Additive and fly ash float are mixed, it is therefore an objective to guarantee that additive is first evenly dispersed and be wrapped in fly ash float
Surface, allow fly ash float under the wetting action of additive, be well dispersed in mix, avoid fly ash float
It deposits because itself is light and most and floats on mix surface；Finally by the fly ash float after additive soaks in additive
It under carrying, is added in preliminary mix and is uniformly dispersed, obtain good fluidity, workability is high, high permeable mixed of later period bearing capacity
Solidifying soil.
In conclusion the invention has the following beneficial effects:
Pervious concrete of the invention, coefficient of permeability reach 0.6mm/s；Compression strength loss rate is minimum after 25 Frozen-thawed cycleds
12.0%, mass loss rate minimum 2.5% after 25 Frozen-thawed cycleds；The addition of additive makes the pressure resistance of later concrete
Degree is up to 48.0MPa, has significant humidification to the intensity of later concrete；And improve pervious concrete
The addition of workability and mobility, especially casein, compression strength and workability to pervious concrete of the present invention exist compared with
Big positive facilitation.
Specific embodiment
The contents of the present invention are further detailed combined with specific embodiments below.
32.5 ordinary portland cement of cement selection PC in the present invention；Coarse aggregate is the stone that partial size is 10-20mm, pressure
Broken value is 7.0%, and clay content is not more than 0.6%；Flyash is level-one selection by winnowing flyash；Casein is selected from the biological work of Hebei letter sheath or bow case
Journey Co., Ltd；Polycarboxylic acids mother liquor is selected from outside ZY-HL700 standard High Performance high performance concrete additive polycarboxylate superplasticizer mother liquor
Add agent；Turkey red oil is selected from the equal commerce and trade Co., Ltd in Jinan.
Embodiment 1
According to the parts by weight of table 1, the water of cementitious material, coarse aggregate and half is mixed, stirs 30s, is uniformly mixed
To mixture A；Additive is squeezed into additive agitator tank by the parts by weight of table 1, puts into fly ash float, stirs 40s, mixing
Uniformly, mixture B is obtained；Mixture B and remaining half water are squeezed into mixture A, stirs 60s, are uniformly mixed, are obtained
Water coagulation soil.Wherein, recycle-water of the water from cleaning concrete tank car, solid content 6%；The composition and content of additive are specific
It is shown in Table 2.
Embodiment 2
According to the parts by weight of table 1, the water of cementitious material, coarse aggregate and half is mixed, stirs 30s, is uniformly mixed
To mixture A；Additive is squeezed into additive agitator tank by the parts by weight of table 1, puts into fly ash float, stirs 40s, mixing
Uniformly, mixture B is obtained；Mixture B and remaining half water are squeezed into mixture A, stirs 60s, are uniformly mixed, are obtained
Water coagulation soil.Wherein, water includes that 2/3 recycle-water from cleaning concrete tank car and 1/3 are sieved from sand-stone separator and obtained
Recycle-water, the water in two kinds of sources settles after mixing by second level, and after mixing, choosing upper layer solid content is 7%
Clear liquid, the as water in the present embodiment 2；The composition and content of additive are specifically shown in Table 2.
Embodiment 3
According to the parts by weight of table 1, the water of cementitious material, coarse aggregate and half is mixed, stirs 30s, is uniformly mixed
To mixture A；Additive is squeezed into additive agitator tank by the parts by weight of table 1, puts into fly ash float, stirs 40s, mixing
Uniformly, mixture B is obtained；Mixture B and remaining half water are squeezed into mixture A, stirs 60s, are uniformly mixed, are obtained
Water coagulation soil.Wherein, water is the recycle-water sieved from sand-stone separator, solid content 8%；The composition of additive and contain
Measurer body is shown in Table 2.
Embodiment 4
The pervious concrete of embodiment 4 is identical as the processing technology of embodiment 2, and difference is the content of each raw material according to 1 institute of table
Show addition, the composition and content of additive are specifically shown in Table 2.
Embodiment 5
The pervious concrete of embodiment 5 is identical as the processing technology of embodiment 2, and difference is the content of each raw material according to 1 institute of table
Show addition, the composition and content of additive are specifically shown in Table 2.
Embodiment 6
The pervious concrete of embodiment 6 is identical as the processing technology of embodiment 2, and difference is the content of each raw material according to 1 institute of table
Show addition, the composition and content of additive are specifically shown in Table 2.
Embodiment 7
The pervious concrete of embodiment 7 is identical as the processing technology of embodiment 2, and difference is the content of each raw material according to 1 institute of table
Show addition, the composition and content of additive are specifically shown in Table 2.
The material content (units/kg) of the pervious concrete of 1 embodiment 1-7 of table
| Cement | Flyash | Coarse aggregate | Fly ash float | Additive | Water | |
| Embodiment 1 | 156 | 44 | 800 | 10 | 0.2 | 90 |
| Embodiment 2 | 156 | 44 | 800 | 10 | 0.2 | 90 |
| Embodiment 3 | 156 | 44 | 800 | 10 | 0.2 | 90 |
| Embodiment 4 | 190 | 60 | 1000 | 15 | 0.4 | 112 |
| Embodiment 5 | 212.8 | 67.2 | 900 | 17.8 | 0.6 | 100 |
| Embodiment 6 | 222 | 78 | 1100 | 20 | 0.8 | 120 |
| Embodiment 7 | 245 | 105 | 1200 | 25 | 1 | 130 |
The material content (units/kg) of the additive of 2 embodiment 1-7 of table
| Polycarboxylic acids mother liquor | Glucose | Casein | Water | |
| Embodiment 1 | 3 | 1.5 | 2 | 3 |
| Embodiment 2 | 3 | 1.5 | 2 | 3 |
| Embodiment 3 | 3 | 1.5 | 2 | 3 |
| Embodiment 4 | 5 | 2 | 3 | 4 |
| Embodiment 5 | 8.5 | 2.5 | 3.5 | 4.5 |
| Embodiment 6 | 12 | 3 | 4 | 5 |
| Embodiment 7 | 15 | 3.5 | 5 | 6 |
Embodiment 8
The pervious concrete of embodiment 8 is identical as the processing technology of embodiment 2, distinguishes the composition for being only that additive and content not
Together, it is specifically shown in Table 3.
Embodiment 9
The pervious concrete of embodiment 9 is identical as the processing technology of embodiment 2, distinguishes the composition for being only that additive and content not
Together, it is specifically shown in Table 3.
Embodiment 10
The pervious concrete of embodiment 10 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 3.
Embodiment 11
The pervious concrete of embodiment 11 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 3.
Embodiment 12
The pervious concrete of embodiment 12 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 3.
The material content (units/kg) of the additive of 3 embodiment 8-12 of table
| Polycarboxylic acids mother liquor | Glucose | Casein | Carboxymethyl chitosan | Water | |
| Embodiment 8 | 5 | 1 | 3 | 2.5 | 2 |
| Embodiment 9 | 10 | 1.5 | 3.5 | 3 | 3 |
| Embodiment 10 | 15 | 2 | 4 | 3.5 | 5 |
| Embodiment 11 | 13 | 2.5 | 4.5 | 4.5 | 6 |
| Embodiment 12 | 20 | 3 | 5 | 5 | 8 |
Embodiment 13
The pervious concrete of embodiment 13 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 4.
Embodiment 14
The pervious concrete of embodiment 14 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 4.
Embodiment 15
The pervious concrete of embodiment 15 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 4.
Embodiment 16
The pervious concrete of embodiment 16 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 4.
Embodiment 17
The pervious concrete of embodiment 17 is identical as the processing technology of embodiment 2, and difference is only that the composition and content of additive
Difference is specifically shown in Table 4.
The material content (units/kg) of the additive of 4 embodiment 13-17 of table
| Polycarboxylic acids mother liquor | Glucose | Casein | Turkey red oil | Water | |
| Embodiment 13 | 10 | 1 | 2 | 2 | 8 |
| Embodiment 14 | 12 | 1.5 | 3 | 3 | 10 |
| Embodiment 15 | 14 | 2 | 3.6 | 3.8 | 12 |
| Embodiment 16 | 18 | 2.5 | 4 | 4.5 | 13 |
| Embodiment 17 | 20 | 3 | 5 | 5 | 15 |
Comparative example 1
The pervious concrete of comparative example 1, using with the identical processing technology of embodiment 2, raw material is as follows: cement 200kg, slightly
Aggregate 800kg, fly ash float 10kg, additive 0.2kg and water 90kg；The composition of additive is in the same manner as in Example 2.
Comparative example 2
The pervious concrete of comparative example 2, using with the identical processing technology of embodiment 2, raw material is as follows: cement 156kg, powder
Coal ash 44kg, coarse aggregate 800kg, additive 0.2kg and water 90kg；The composition of additive is in the same manner as in Example 2.
Comparative example 3
The pervious concrete of comparative example 3 is only that the composition of additive and content are different from the difference of embodiment 2, specifically: it is poly-
Carboxylic acid mother liquor 3kg, glucose 1.5kg and water 3kg.
Comparative example 4
The pervious concrete of comparative example 3, the difference from example 2 is that processing technology is different, specifically: according in embodiment 2
Parts by weight, the water of cementitious material, coarse aggregate, fly ash float and half is mixed, stir 30s, be uniformly mixed
To mixture A；Additive and remaining half water are squeezed into mixture A by the parts by weight of embodiment 2, stirs 60s, and mixing is equal
It is even, obtain pervious concrete.Wherein, recycle-water of the water from cleaning concrete tank car, solid content 6%；The composition of additive
And content is in the same manner as in Example 2.
Control group
The pervious concrete of control group, the difference from example 2 is that, the additive amount of the addition of no additive, each raw material reduces
100 times, only as control, it is not used in batch production, remaining is same as Example 2.
Using CJJ/T 135-2009 " water-permeable cement concrete pavement technique regulation ", to embodiment 1-17, comparative example 1-3
Performance measurement is carried out with the pervious concrete of control group, testing result is shown in Table 5；Wherein, construction allows maximum duration to refer to
It discharges from blender to pouring the permission maximum duration finished.
The water permeability testing result of the concrete of 5 embodiment 1-17 of table, comparative example 1-3 and control group
By the testing result of table 5 it is found that pervious concrete water permeability of the invention is good, meet " water-permeable cement concrete
Pavement technique regulation " in 0.5mm/s coefficient of permeability requirement, and be superior to the performance of control group concrete.By to embodiment
1-7, embodiment 8-12 and embodiment 13-17 carry out across comparison, show in additive of the invention, carboxymethyl chitosan and soil
The raising of the addition of its red oil of ear, water permeability and workability to pervious concrete is helpful.By the inspection of comparative example 1
Survey the result shows that, on the workability of concrete, there are certain positive correlation influences for the addition of flyash.By the detection knot of comparative example 2
It is smaller that fruit shows that fly ash float influences the water permeability of concrete and workability.By the testing result table of comparative example 3
Bright, casein all has biggish positive facilitation to the workability and water penetration of concrete of the present invention.
Using the method in CJJ/T 135-2009 " water-permeable cement concrete pavement technique regulation ", to embodiment 1-17,
The concrete of comparative example 1-3 and control group carries out frost resistance and intensity test respectively, and testing result is as shown in Table 6 below.
The comprehensive performance testing result of the concrete of 6 embodiment 1-17 of table, comparative example 1-3 and control group
It is proved by the testing result of table 6, pervious concrete of the invention, anti-freezing property is excellent, pressure resistance after 25 Frozen-thawed cycleds
Degree loss late and mass loss rate meet the requirement in regulation, and compression strength loss rate is minimum after 25 Frozen-thawed cycleds
12.0%, mass loss rate minimum 2.5% after 25 Frozen-thawed cycleds is much better than the concrete (control for being not added with additive
Group), and the concrete without fly ash float (comparative example 2) and casein (comparative example 3).Pervious concrete 28 in the present invention
It compression strength reaches as high as 48.0MPa, and intensity is high；By the result of comparative example 1-3 it is found that fly ash float is mixed to the present invention
The compression strength for coagulating soil has large effect；Show casein to pervious concrete of the invention in conjunction with the testing result of table 5
Workability energy and compression strength all have large effect.Show processing technology of the invention by the testing result of table 5 and table 6
In, fly ash float is pre-dispersed in additive, allow fly ash float in the carrying of additive more fully
It is dispersed in concrete, water permeability, compression strength and the workability of pervious concrete can be improved.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of pervious concrete, which is characterized in that it includes the raw material components of following parts by weight: 200-350 parts of cementitious material,
800-1200 parts of coarse aggregate, 10-25 parts of fly ash float, 0.2-1 parts of additive and 90-130 parts of water, the additive is by including
The raw material of following parts by weight is formulated: 3-15 part of polycarboxylic acids mother liquor, 1.5-3.5 parts of glucose, and 2-5 parts of casein and water 3-6
Part.
2. pervious concrete according to claim 1, which is characterized in that it includes the raw material components of following parts by weight: glue
250-300 parts of gel material, 900-1100 parts of coarse aggregate, 15-20 parts of fly ash float, 0.4-0.8 parts of additive and water 100-120
Part, the additive is by including that the raw material of following parts by weight is formulated: 5-12 parts of polycarboxylic acids mother liquor, 2-3 parts of glucose, and junket egg
White 3-4 parts and water 4-5 parts.
3. pervious concrete according to claim 1, it is characterised in that: the additive is by the original including following parts by weight
Material is formulated: 5-20 parts of polycarboxylic acids mother liquor, 1-3 parts of glucose, and 3-5 parts of casein, 2.5-5 parts of carboxymethyl chitosan and water 2-
8 parts.
4. pervious concrete according to claim 3, it is characterised in that: the additive is by the original including following parts by weight
Material is formulated: 10-15 parts of polycarboxylic acids mother liquor, 1.5-2.5 parts of glucose, and 3.5-4.5 parts of casein, carboxymethyl chitosan 3-
4.5 parts and water 3-6 parts.
5. pervious concrete according to claim 1, it is characterised in that: the additive is by the original including following parts by weight
Material is formulated: 10-20 parts of polycarboxylic acids mother liquor, 1-3 parts of glucose, and 2-5 parts of casein, 2-5 parts of turkey red oil and water 8-15
Part.
6. pervious concrete according to claim 5, it is characterised in that: the additive is by the original including following parts by weight
Material is formulated: 12-18 parts of polycarboxylic acids mother liquor, 1.5-2.5 parts of glucose, 3-4 parts of casein, 3-4.5 parts of turkey red oil and
10-13 parts of water.
7. pervious concrete according to claim 1-6, it is characterised in that: the water comes from cleaning concrete tank
The recycle-water of vehicle and/or the recycle-water sieved from sand-stone separator, the solid content of the water are 6-8%.
8. pervious concrete according to claim 1-6, it is characterised in that: the cementitious material include cement and
Flyash, the weight of the flyash account for the 22-30% of cementitious material total weight.
9. pervious concrete according to claim 1-6, it is characterised in that: the coarse aggregate is that partial size is 10-
The stone of 20mm, crush values 7.0%, clay content are not more than 0.6%.
10. a kind of processing technology of pervious concrete described in any one of claims 1-6, which is characterized in that it passes through as follows
Processing technology obtains:
The water of cementitious material, coarse aggregate and water gross weight 50% is added by above-mentioned parts by weight, is uniformly mixed, obtains mixture
A；Additive and fly ash float is added by above-mentioned parts by weight, is uniformly mixed, obtains mixture B；It is added into mixture A
The water of mixture B and surplus, are uniformly mixed, and obtain pervious concrete.
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| CN113354324A (en) * | 2021-07-07 | 2021-09-07 | 广东悦谷道路材料有限公司 | Reinforcing agent, pervious concrete and processing method of pervious concrete |
| CN113735519A (en) * | 2021-09-14 | 2021-12-03 | 北京科技大学 | Filling material and application thereof |
| CN116283161A (en) * | 2023-05-22 | 2023-06-23 | 河北金谷再生资源开发有限公司 | Concrete solid brick and preparation method and application thereof |
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Application publication date: 20191015 |