CN108101432A - A kind of structure gradient type cement base permeable pavement brick and preparation method thereof - Google Patents

A kind of structure gradient type cement base permeable pavement brick and preparation method thereof Download PDF

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Publication number
CN108101432A
CN108101432A CN201711383814.8A CN201711383814A CN108101432A CN 108101432 A CN108101432 A CN 108101432A CN 201711383814 A CN201711383814 A CN 201711383814A CN 108101432 A CN108101432 A CN 108101432A
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China
Prior art keywords
parts
layer
permeable pavement
grain size
gathering materials
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CN201711383814.8A
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Chinese (zh)
Inventor
贺图升
赵旭光
赵三银
黎载波
郑立达
林命坤
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Shaoguan University
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Shaoguan University
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Priority to CN201711383814.8A priority Critical patent/CN108101432A/en
Publication of CN108101432A publication Critical patent/CN108101432A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00Details of pavings
    • E01C11/22Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224Surface drainage of streets
    • E01C11/225Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00284Materials permeable to liquids
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The present invention relates to a kind of structure gradient type cement base permeable pavement bricks and preparation method thereof, and the permeable pavement brick is made of bottom and surface layer, and the surface thickness is the 2~15% of permeable pavement brick overall thickness;The bottom includes the component of following parts by weight:300~500 parts of cementitious material, gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, 1~3 part of fiber;The surface layer includes the component of following parts by weight:300~500 parts of cementitious material, gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, 0~5 part of colorant.The structure gradient type cement base permeable pavement brick of the present invention has the advantages that intensity is high, water permeability is good, preparation process is simple, at low cost.

Description

A kind of structure gradient type cement base permeable pavement brick and preparation method thereof
Technical field
The present invention relates to building material technical field more particularly to a kind of structure gradient type cement base permeable pavement brick and its Preparation method.
Background technology
Permeable pavement brick sprawls material as a kind of emerging environment-friendly type, compared with Common Concrete Pavement, has height Water penetration and the feature of environmental protection efficiently solve the problems, such as city ponding, and provide and be replenished in time for groundwater resources, are the discrepancy of passerby Provide necessary convenience;Simultaneously as water-permeable brick is porous structure, underground water is evaporated from the hole of water-permeable brick, can slow down city The tropical island effect in city and the high-temperature effect in city, and slow down the noise pollution in city, it can largely overcome traditional coagulation The shortcomings that soil surface.Therefore, the popularizing application prospect of permeable pavement brick is wide.
Water-permeable brick can be divided into two major class of slug type water-permeable brick and baking-free type water-permeable brick by production technology.Though slug type water-permeable brick Right intensity is high, wearability is good, but complex production process, it is necessary to which high-temperature calcination, resources and energy consumption is big, price is up to more than 200 Member/m2.Baking-free type water-permeable brick is divided into as two kinds of fundamental types of resin-bonded water-permeable brick and cement combination water-permeable brick, and resin-bonded is saturating For water brick generally using organic polymers such as epoxy resin as cementing agent, such water-permeable brick has that intensity is big, good toughness, wear-resisting property are good The characteristics of, still, such water-permeable brick is since using organic polymer as binding agent, production cost is high, loss of properties on aging;Water Mud combination water-permeable brick production cost is relatively low, but striaght cement shrinking percentage in hydration process is big, under the effect of contraction that gathers materials, petrifying water Larger stress difference is generated between slurry body and aggregate Interface, is also easy to produce micro-crack, the cohesive force between reducing slurry and gathering materials, The compression strength retraction of water-permeable brick later stage is caused, and is worn no resistance, limits the popularization and application of water-permeable brick to a certain extent.
The content of the invention
Based on this, it is an object of the present invention to provide a kind of structure gradient type cement base permeable pavement brick and its preparation sides Method, simple for process, at low cost, permeable pavement brick obtained has the advantages that intensity is high, water permeability is good.
The purpose of the present invention is what is be achieved through the following technical solutions:A kind of structure gradient type cement base permeable pavement brick, It is made of bottom and surface layer, the surface thickness is the 2~15% of permeable pavement brick overall thickness;The bottom includes following weight The component of part:300~500 parts of cementitious material, gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, fiber 1 ~3 parts;The surface layer includes the component of following parts by weight:300~500 parts of cementitious material, gather materials 1200~1800 parts, water 85~ 120 parts, 5~15 parts of additive, 0~5 part of colorant.
Compared with the prior art, brick of the invention is made of bottom and surface layer, and to the component and content of bottom and surface layer It optimizes respectively, cooperates, acts synergistically between each component, enhance the cementation gathered materials between cementitious material, and Be with the addition of the fiber of porous structure, from prepared by structure gradient type cement base permeable pavement brick have that intensity is high, water permeability The advantages of good, 7 days tensile splitting strengths are more than 2.7MPa, and 28 days tensile splitting strengths are more than 3.3MPa, and coefficient of permeability is more than 4.3 ×10-2cm/s。
Further, the aggregate size in the bottom is distributed as:Grain size be gathering materials for 2.36~4.75mm account for 19~ 35%, grain size is gathering materials for 4.75~9.5mm to account for 35~37%, and grain size is accounts for 18~27% gathering materials for 9.5~13.2mm, grain size 10~20% are accounted for for gathering materials for 13.2~16mm.Cement base permeable pavement brick is generally using small particle, the collection of gap grading at present Material (grading is the distribution condition of particles at different levels of gathering materials), what the stacking that intensity is depended between gathering materials was formed with interlocking Structural framework is acted on and gathered materials and the cementation of cement slurry (wrapping up in slurry thickness and adhesion strength), and aggregate grading is except influencing Gather materials total specific surface area, and then influence to gather materials wraps up in outside slurry thickness, can also influence to gather materials formed voidage and aperture Size, and then influence the intensity and water permeability of cement base permeable pavement brick.At this point, the maximum particle diameter of base course aggregate is 16mm, Grain size is divided into four grades, by optimizing the grain size distribution conditions at different levels gathered materials so that and coarse grained gap is particles filled in, The gap of middle particle is filled by fine grained, and such stage filling forms fine and close stacking states, improves the intensity of brick, keeps simultaneously Certain pore size improves water penetration.
Further, the aggregate size in the bottom is distributed as:Grain size be gathering materials for 2.36~4.75mm account for 15~ 32%, grain size is gathering materials for 4.75~9.5mm to account for 29~34%, and grain size is accounts for 16~22% gathering materials for 9.5~13.2mm, grain size 9~17% are accounted for for gathering materials for 13.2~16mm, grain size is gathering materials for 16~19mm to account for 9~17%.At this point, the maximum of base course aggregate Grain size is 19mm, and grain size is divided into five grades, by optimizing the grain size distribution conditions at different levels gathered materials so that coarse grained gap by In it is particles filled, the gap of middle particle is filled by fine grained, and such stage filling forms fine and close stacking states, improves the strong of brick Degree, while certain pore size is kept, improve water penetration.
Further, the aggregate size in the surface layer is 2.36~4.75mm.Surface layer is located at the surface of brick, straight with the external world Contact, aperture should not be too large, and using the small particle in the range of this, can reduce voidage, bulk density be improved, so as to improve The surface strength of brick.
Further, the cementitious material in the bottom and surface layer includes the component of following weight ratio:Cement 40~ 70%, admixture 30-60%;The admixture is the compound of the one or more in slag powders, flyash, steel-making slag powder.Pure water Mud shrinking percentage in hydration process is big, and when hardening easily cracks, and causes the strength reduction of brick.By adulterating ore deposit in cement Polymer blends material, it is possible to reduce cement and the stress difference between gathering materials improve the gelatinization results of cement, improve gather materials it is viscous with cement Power is tied, and then improves the tensile strength of brick.
Further, gathering materials in the bottom and surface layer is lime stone.
Further, the additive in the bottom and surface layer is polycarboxylate water-reducer.
Further, the fiber in the bottom is polypropylene fibre, polyacrylonitrile fibre, vinal, glass One or more compound such as fiber, basalt fibre.
Further, the colorant in the surface layer is iron oxide pigment.
The present invention also provides a kind of preparation methods of structure gradient type cement base permeable pavement brick, comprise the following steps:
S1:Prepare bottom raw material according to the component of following parts by weight:300~500 parts of cementitious material gathers materials 1200~1800 Part, 85~120 parts of water, 5~15 parts of additive, 1~3 part of fiber;Prepare face stock according to the component of following parts by weight:Gelling 300~500 parts of material, gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, 0~5 part of colorant;
S2:By gathering materials in bottom raw material, cementitious material and fiber stir evenly, and then add in water and additive is stirred It mixes, substrate material is made;Gathering materials in face stock with cementitious material is stirred evenly, then water is added in and additive is stirred It mixes, surface layer material is made;
S3:Substrate material made from step S2 and surface layer material layering are fitted into mold, prepared by moulding process The permeable pavement brick.
Compared with the prior art, preparation process of the invention includes dispensing, stirring, forming step, without high-temperature calcination, work Skill is simple, and production cost is low.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is the preparation process schematic diagram of the structure gradient type cement base permeable pavement brick of the present invention.
Specific embodiment
Embodiment 1
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 70%, steel-making slag powder 30%.
Gathering materials for lime stone in bottom, maximum particle diameter 16mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 19.06%, and grain size is gathering materials for 4.75~9.5mm to account for 35.34%, and grain size is to account for gathering materials for 9.5~13.2mm 26.25%, grain size is gathering materials for 13.2~16mm to account for 19.35%.Gathering materials for lime stone in surface layer, grain size for 2.36~ 4.75mm。
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Embodiment 2
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 70%, steel-making slag powder 30%.
Gathering materials for lime stone in bottom, maximum particle diameter 16mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 26.11%, and grain size is gathering materials for 4.75~9.5mm to account for 36.64%, and grain size is to account for gathering materials for 9.5~13.2mm 22.36%, grain size is gathering materials for 13.2~16mm to account for 14.89%.Gathering materials for lime stone in surface layer, grain size for 2.36~ 4.75mm。
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Embodiment 3
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 50%, steel-making slag powder 30%, fine coal ashes 20%.
Gathering materials for lime stone in bottom, maximum particle diameter 16mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 34.35%, and grain size is gathering materials for 4.75~9.5mm to account for 36.49%, and grain size is to account for gathering materials for 9.5~13.2mm 18.22%, grain size is gathering materials for 13.2~16mm to account for 10.94%.Gathering materials for lime stone in surface layer, grain size for 2.36~ 4.75mm。
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Embodiment 4
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 70%, steel-making slag powder 30%.
Gathering materials for lime stone in bottom, maximum particle diameter 19mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 15.84%, and grain size is gathering materials for 4.75~9.5mm to account for 29.36%, and grain size is to account for gathering materials for 9.5~13.2mm 21.80%, grain size is gathering materials for 13.2~16mm to account for 16.08%, and grain size is gathering materials for 16~19mm to account for 16.92%.In surface layer Gather materials for lime stone, grain size is 2.36~4.75mm.
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Embodiment 5
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive, 3 parts of colorant.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 70%, steel-making slag powder 30%.
Gathering materials for lime stone in bottom, maximum particle diameter 19mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 22.79%, and grain size is gathering materials for 4.75~9.5mm to account for 31.98%, and grain size is to account for gathering materials for 9.5~13.2mm 19.52%, grain size is gathering materials for 13.2~16mm to account for 13.00%, and grain size is gathering materials for 16~19mm to account for 12.71%.In surface layer Gather materials for lime stone, grain size is 2.36~4.75mm.
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
Colorant in surface layer is iron oxide red.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Embodiment 6
The structure gradient type cement base permeable pavement brick of the present embodiment is made of bottom and surface layer, and surface thickness is permeable road The 5% of face brick overall thickness;The bottom includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, 90 parts of water, 5 parts of additive, 1.8 parts of fiber;The surface layer includes the component of following parts by weight:400 parts of cementitious material, gather materials 1500 parts, water 96 parts, 5 parts of additive, 3 parts of colorant.
Cementitious material in bottom and surface layer is made of the component of following weight ratio:Cement 50%, admixture 50%;Institute Admixture is stated to be combined by the component of following weight ratio:Slag powders 70%, steel-making slag powder 30%.
Gathering materials for lime stone in bottom, maximum particle diameter 19mm, aggregate grading are:Grain size is the collection of 2.36~4.75mm Material accounts for 31.24%, and grain size is gathering materials for 4.75~9.5mm to account for 33.19%, and grain size is to account for gathering materials for 9.5~13.2mm 16.57%, grain size is gathering materials for 13.2~16mm to account for 9.95%, and grain size is gathering materials for 16~19mm to account for 9.05%.In surface layer Gather materials for lime stone, grain size is 2.36~4.75mm.
Additive in bottom and surface layer is polycarboxylate water-reducer, solid content 25%.
Fiber in bottom is polypropylene fibre, length 12mm, density 0.91g/cm3, a diameter of 18~45um, fracture Range of extension is 5%~20%.
Colorant in surface layer is iron oxide red.
The preparation method of the structure gradient type cement base permeable pavement brick of the present embodiment, as shown in Figure 1, including following step Suddenly:
(1) bottom and face stock are weighed respectively according to the formula described in the present embodiment.
(2) by gathering materials in bottom raw material, cementitious material and fiber stir evenly, then add in water and additive stirred It mixes, substrate material finally is made with the working condition of water adjustment bottom mixture;By gathering materials in face stock and cementitious material It stirs evenly, then adds in water and additive is stirred, surface layer finally is made with the working condition of water adjustment surface layer mixture Material.
(3) substrate material and surface layer material layering made from step (2) are fitted into mold, apply 0.05~0.1MPa's Compression is placed on shake table and is molded, and 10~15s of time of vibration is demoulded afterwards for 24 hours, under conditions of 20 DEG C ± 2, is supported through overly moist Permeable pavement brick finished product is made to regulation age in shield.
Performance test
According to GB/T25993-2010《Permeable pavement brick and porous pavement plate》To the structure gradient of 1-6 of the embodiment of the present invention Type cement base permeable pavement brick is tested for the property, and dependence test the results are shown in Table 1.
The test result of 1 embodiment 1-6 of table
It can be seen that, structure gradient type cement base permeable pavement brick of the invention has intensity height, water permeability from table 1 The advantages of good, 7 days tensile splitting strengths are more than 2.7MPa, and 28 days tensile splitting strengths are more than 3.3MPa, and coefficient of permeability is more than 4.3 ×10-2cm/s。
Compared with the prior art, the present invention is gathered materials using grading, the structure gradient type prepared by adulterating mineral admixture Cement base permeable pavement brick has the advantages that intensity is high, water permeability is good, can be widely used for pavement, park, square and garden The places such as woods, and preparation process is simple, production cost is low.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention Scope.

Claims (10)

1. a kind of structure gradient type cement base permeable pavement brick, it is characterised in that:It is made of bottom and surface layer, the surface thickness For the 2~15% of permeable pavement brick overall thickness;The bottom includes the component of following parts by weight:300~500 parts of cementitious material, Gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, 1~3 part of fiber;The surface layer includes following parts by weight Component:300~500 parts of cementitious material, gather materials 1200~1800 parts, 85~120 parts of water, 5~15 parts of additive, colorant 0 ~5 parts.
2. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:Collection in the bottom Expect that particle diameter distribution is:Grain size is gathering materials for 2.36~4.75mm to account for 19~35%, grain size be gathering materials for 4.75~9.5mm account for 35~ 37%, grain size is gathering materials for 9.5~13.2mm to account for 18~27%, and grain size is gathering materials for 13.2~16mm to account for 10~20%.
3. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:Collection in the bottom Expect that particle diameter distribution is:Grain size is gathering materials for 2.36~4.75mm to account for 15~32%, grain size be gathering materials for 4.75~9.5mm account for 29~ 34%, grain size is gathering materials for 9.5~13.2mm to account for 16~22%, and gathering materials for 13.2~16mm to account for 9~17%, grain size is grain size Gathering materials for 16~19mm accounts for 9~17%.
4. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:Collection in the surface layer Material grain size is 2.36~4.75mm.
5. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:The bottom and surface layer In cementitious material include the component of following weight ratio:Cement 40~70%, admixture 30-60%;The admixture is ore deposit It is one or more compound in ground-slag, flyash, steel-making slag powder.
6. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:The bottom and surface layer In to gather materials be lime stone.
7. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:The bottom and surface layer In additive be polycarboxylate water-reducer.
8. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:Fibre in the bottom It ties up and is answered for polypropylene fibre, polyacrylonitrile fibre, vinal, glass fibre, basalt fibre etc. are one or more It closes.
9. structure gradient type cement base permeable pavement brick according to claim 1, it is characterised in that:In the surface layer Toner is iron oxide pigment.
10. the preparation method of any structure gradient type cement base permeable pavement bricks of claim 1-9, it is characterised in that: Comprise the following steps:
S1:Prepare bottom raw material and face stock according to formula;
S2:By gathering materials in bottom raw material, cementitious material and fiber stir evenly, and then add in water and additive is stirred, Substrate material is made;Gathering materials in face stock with cementitious material is stirred evenly, then water is added in and additive is stirred, Surface layer material is made;
S3:Substrate material made from step S2 and surface layer material layering are fitted into mold, prepared by moulding process described Permeable pavement brick.
CN201711383814.8A 2017-12-20 2017-12-20 A kind of structure gradient type cement base permeable pavement brick and preparation method thereof Pending CN108101432A (en)

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CN109626889A (en) * 2019-01-24 2019-04-16 天津城建大学 A kind of novel water permeable brick
CN110498639A (en) * 2019-07-25 2019-11-26 南开大学 A kind of preparation method of the sand sill with fast drainage function

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CN106554180A (en) * 2016-11-01 2017-04-05 浙江工业大学 A kind of cement-based material functionally gradient brick and preparation method thereof
CN106866046A (en) * 2016-12-28 2017-06-20 河南建菱建材有限公司 A kind of quartz sand water-permeable brick

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CN109626889A (en) * 2019-01-24 2019-04-16 天津城建大学 A kind of novel water permeable brick
CN110498639A (en) * 2019-07-25 2019-11-26 南开大学 A kind of preparation method of the sand sill with fast drainage function

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Application publication date: 20180601