CN103387355B - Water-washing pebble-uncovered water-permeable concrete and preparation method thereof - Google Patents
Water-washing pebble-uncovered water-permeable concrete and preparation method thereof Download PDFInfo
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- CN103387355B CN103387355B CN201310309746.6A CN201310309746A CN103387355B CN 103387355 B CN103387355 B CN 103387355B CN 201310309746 A CN201310309746 A CN 201310309746A CN 103387355 B CN103387355 B CN 103387355B
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Abstract
The invention discloses water-washing pebble-uncovered water-permeable concrete. The water-washing pebble-uncovered water-permeable concrete comprises a macadam base layer, a plain-colored structural layer, a pebble-uncovered surface layer and a surface wear-resistant layer. The invention also discloses a preparation method for the water-washing pebble-uncovered water-permeable concrete. The specific technical scheme comprises a first step of preparing the macadam base layer; a second step that the plain-colored structural layer relates to plain-colored water-permeable concrete; a third step of stirring a plain-colored cementing material, cement and polypropylene fiber in a concrete mixer; a fifth step of discharging, pouring, vibrating and rolling; a sixth step of preparing the surface layer water-permeable concrete; an eighth step of adding an appropriate amount of water into the mixer and mixing uniformly; a ninth step of discharging, pouring, vibrating and rolling; a tenth step of spraying a water-washing pebble uncovering material agent; an eleventh step of, during the permanent set, washing the surface layer with water until colored pebbles are uncovered; and a twelfth step of maintaining, namely, spraying a wear-resistant protective agent on the surface layer. According to the concrete and the method, water-permeable and air-permeable areas of a city are increased, heat and water exchanges between the land surface and the air are enhanced, urban climate is regulated and the land surface temperature is reduced.
Description
Technical field
The invention belongs to building field, concrete is a kind of pervious concrete of washing dew cobble and preparation method thereof.
Background technology
Urban heat land effect refers to temperature in the city phenomenon apparently higher than peripheral suburb, on hygrogram near the ground, suburb temperature Change is very little, city is a high-temperature zone, resemble the island on outstanding sea, because this island represent the urban region of high temperature, so be just called visually urban heat island.
The reason that produces tropical island effect has several as follows: plant produced, communications and transportation and resident living all need the various fuel that burns, and all outwards discharging a large amount of heats every day; Produced the discharges such as a large amount of oxynitride, carbonic acid gas and dust, these materials can absorb underlying thermal radiation simultaneously, produce Greenhouse effect, thereby cause that atmosphere further heats up; Be subject to the impact of city underlying surface characteristic, in city, there is a large amount of artificial works, as normal concrete, tarmac, various building walls etc., changed the heating power attribute of underlying, the heat absorption of these artificial works is fast and thermal capacity is little, under identical solar radiation condition, they are than natural underlying quick heating, thereby its surface temperature is apparently higher than natural underlying.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of pervious concrete that reveals cobble of washing, increase city porous, ventilative area, strengthen heat and the exchange of moisture of earth's surface and air, regulate urban climate, reduce surface temperature, be conducive to alleviate city " tropical island effect ".
For achieving the above object, a kind of pervious concrete that reveals cobble of washing of the present invention, it comprises crushed rock base course, plain color structural sheet, reveals cobble upper layer and surface wear-resistant layer, between described crushed rock base course and plain color structural sheet, be fixedly connected with by building, between plain color structural sheet and dew cobble upper layer, be fixedly connected with by building, reveal between cobble upper layer and surface wear-resistant layer and be fixedly connected with by spraying; Revealing cobble upper layer proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3cobble, 350～450kg/m
3cement, 0.9～1.2kg/m
3polypropylene fibre, 110～130kg/m
3water; Plain color structural sheet proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3rubble, 350～450kg/m
3cement, 0.9～1.2kg/m
3polypropylene fibre, 110～130kg/m
3water.
Described crushed rock base course is that rubble compacting forms, crushed rock base course thickness 200～300mm, and ballast grain sizes is 5～31.5mm.
Described dew cobble upper layer strength grade is C20～C25, thickness 30～50mm; Plain color structural sheet strength grade is C20～C25, thickness 40～200mm.
Described dew cobble upper layer evenly arranges some colored cobbles, and colored cobble particle diameter is 5～10mm, and colored cobble is through fragmentation or surface finish processing.
Wash a pervious concrete preparation method who reveals cobble, its concrete technical scheme is:
The first step: first prepare crushed rock base course, adopt the graded broken stone of 5～31.5mm, thickness 200mm, mechanical ramming;
Second step: plain color structural sheet is plain color pervious concrete, takes in proportion each component, plain color structural sheet proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3rubble, 350～450kg/m
3cement, 0.9～1.2kg/m
3polypropylene fibre, 110～130kg/m
3water;
The 3rd step: plain color agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into rubble and stir 15s, each component is mixed;
The 4th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 5th step: go out machine, build, vibrate, roll-in;
The 6th step: before lower-layer concrete initial set, cobble upper layer pervious concrete is revealed in preparation, takes in proportion each component: revealing cobble upper layer proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3cobble, 350～450kg/m
3cement, 0.9～1.2kg/m
3polypropylene fibre, 110～130kg/m
3water;
The 7th step: agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into colored cobble and stir 15s, each component is mixed;
The 8th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 9th step: go out machine, build, vibrate, roll-in;
The tenth step: spray the agent of the undisguised material of washing before revealing the initial set of cobble upper layer pervious concrete;
The 11 step: when final set, water rinses and reveals cobble upper layer to exposing colored cobble;
The 12 step: maintenance; Reveal cobble upper layer spraying abrasion-proof protective material.
Described washing undisguisedly expects that agent is chemicals, this chemicals is a kind of compound retardant, mainly formed by naphthalene water reducer, white sugar, Seignette salt, tripoly phosphate sodium STPP, hydroxyethylmethyl-cellulose, water, each constituent mass per-cent is: naphthalene water reducer 8%～15%, white sugar 2%～6%, Seignette salt 2%～5%, tripoly phosphate sodium STPP 3%～6%, hydroxyethylmethyl-cellulose 0.02%～0.08%, all the other are water.
A kind of pervious concrete that reveals cobble of washing that the present invention proposes, simple in structure, easily making, with low cost, city porous, ventilative area are increased, strengthen heat and the exchange of moisture of earth's surface and air, regulated urban climate, reduced surface temperature, be conducive to alleviate city " tropical island effect ", there is the effect of beautifying road surface and environment simultaneously.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is each layer of structural representation.
Embodiment
Referring to accompanying drawing, a kind of pervious concrete structure of revealing cobble of washing, it comprises crushed rock base course 3, plain color structural sheet 2, reveals cobble upper layer 1 and surface wear-resistant layer 6, between described crushed rock base course and plain color structural sheet, be fixedly connected with by building, between plain color structural sheet and dew cobble upper layer, be fixedly connected with by building, reveal between cobble upper layer and surface wear-resistant layer and be fixedly connected with by spraying; Revealing cobble upper layer proportioning is: 6～10 ㎏/m3 agglutinate, 1500～1700 ㎏/m3 cobble, 350～450kg/m3 cement, 0.9～1.2kg/m3 polypropylene fibre, 110～130kg/m3 water; Plain color structural sheet proportioning is: 6～10 ㎏/m3 agglutinate, 1500～1700 ㎏/m3 rubble, 350～450kg/m3 cement, 0.9～1.2kg/m3 polypropylene fibre, 110～130kg/m3 water.
Described crushed rock base course is that rubble 5 compactings form, crushed rock base course thickness 200～300mm, and ballast grain sizes is 5～31.5mm.
Described dew cobble upper layer semi-finals degree grade is C20～C25, thickness 30～50mm; Plain color structural sheet strength grade is C20～C25, thickness 40～200mm.
Described dew cobble upper layer evenly arranges some colored cobbles, and colored cobble particle diameter is 5～10mm, and colored cobble is through fragmentation or surface finish processing.
The following examples are for describing the present invention in detail, and limit never in any form scope of invention.
(1) embodiment 1: reveal cobble upper layer I proportioning
Thickness is 30mm, water 111kg/m3, and agglutinate 10kg/m3, cement 450kg/m3, particle diameter 4.75～9.5mm cobble 1620kg/m3, polypropylene fibre 1.0kg/m3, the characteristic of final product is as follows:
Coefficient of permeability (15 DEG C) is 1.7, wear resistance coefficient 21, after 25 freeze-thaw cycle, after ultimate compression strength rate of loss and 25 freeze-thaw cycle, mass loss rate is qualified, porosity is 15% continuously, strength grade is C25, ultimate compression strength (28d) is 29.3Mpa, and bending strength (28d) is 3.1Mpa.
(2) embodiment 2: reveal cobble upper layer II proportioning
Thickness is 40mm, water 107kg/m3, and agglutinate 8kg/m3, cement 410kg/m3, particle diameter 4.75～9.5mm cobble 1580kg/m3, polypropylene fibre 0.9kg/m3, the characteristic of final product is as follows:
Coefficient of permeability (15 DEG C) is 1.9, wear resistance coefficient 24, after 25 freeze-thaw cycle, after ultimate compression strength rate of loss and 25 freeze-thaw cycle, mass loss rate is qualified, porosity is 16% continuously, strength grade is C20, ultimate compression strength (28d) is 24.8Mpa, and bending strength (28d) is 2.8Mpa.
(3) embodiment 3: plain color structural sheet I proportioning
Thickness is 80mm, water 122kg/m3, and agglutinate 9kg/m3, cement 400kg/m3, particle diameter 9.5～13.2mm rubble 1580kg/m3, polypropylene fibre 1.1kg/m3, the characteristic of final product is as follows:
Coefficient of permeability (15 DEG C) is 2.7, wear resistance coefficient 17, after 25 freeze-thaw cycle, after ultimate compression strength rate of loss and 25 freeze-thaw cycle, mass loss rate is qualified, porosity is 20% continuously, strength grade is C25, ultimate compression strength (28d) is 30.2Mpa, and bending strength (28d) is 3.6Mpa.
(4) embodiment 4: plain color structural sheet II proportioning
Thickness is 100mm, water 119kg/m3, and agglutinate 7kg/m3, cement 350kg/m3, particle diameter 9.5～13.2mm rubble 1550kg/m3, polypropylene fibre 1.0kg/m3, the characteristic of final product is as follows:
Coefficient of permeability (15 DEG C) is 2.4, wear resistance coefficient 20, after 25 freeze-thaw cycle, after ultimate compression strength rate of loss and 25 freeze-thaw cycle, mass loss rate is qualified, porosity is 18% continuously, strength grade is C20, ultimate compression strength (28d) is 26.1Mpa, and bending strength (28d) is 3.0Mpa.
Table 1 reveals cobble pervious concrete proportioning (kg/m3)
Table 2 reveals cobble pervious concrete properties testing data
Wash a pervious concrete preparation method who reveals cobble, its concrete technical scheme is:
The first step: first prepare crushed rock base course, adopt the graded broken stone of 5～31.5mm, thickness 200mm, mechanical ramming;
Second step: plain color structural sheet is plain color pervious concrete, takes in proportion each component, plain color structural sheet proportioning is: 6～10 ㎏/m3 agglutinate, 1500～1700 ㎏/m3 rubble, 350～450kg/m3 cement, 0.9～1.2kg/m3 polypropylene fibre, 110～130kg/m3 water;
The 3rd step: plain color agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into rubble and stir 15s, each component is mixed;
The 4th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 5th step: go out machine, build, vibrate, roll-in;
The 6th step: before lower-layer concrete initial set, cobble upper layer pervious concrete is revealed in preparation, take in proportion each component, revealing cobble upper layer proportioning is: 6～10 ㎏/m3 agglutinate, 1500～1700 ㎏/m3 cobble, 350～450kg/m3 cement, 0.9～1.2kg/m3 polypropylene fibre, 110～130kg/m3 water;
The 7th step: agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into colored cobble and stir 15s, each component is mixed;
The 8th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 9th step: go out machine, build, vibrate, roll-in;
The tenth step: spray the agent of the undisguised material of washing before revealing the initial set of cobble upper layer pervious concrete;
The 11 step: when final set, water rinses and reveals cobble upper layer to exposing colored cobble;
The 12 step: maintenance; Reveal cobble upper layer spraying abrasion-proof protective material.
Described washing undisguisedly expects that agent is chemicals, this chemicals is a kind of compound retardant, mainly formed by naphthalene water reducer, white sugar, Seignette salt, tripoly phosphate sodium STPP, hydroxyethylmethyl-cellulose, water, each constituent mass per-cent is: naphthalene water reducer 8%～15%, white sugar 2%～6%, Seignette salt 2%～5%, tripoly phosphate sodium STPP 3%～6%, hydroxyethyl methyl fiber 0.02%～0.08%, all the other are water.
A kind of pervious concrete that reveals cobble of washing that the present invention proposes, simple in structure, easily making, with low cost, city porous, ventilative area are increased, strengthen heat and the exchange of moisture of earth's surface and air, regulated urban climate, reduced surface temperature, be conducive to alleviate city " tropical island effect ", there is the effect of beautifying road surface and environment simultaneously.
Claims (2)
1. wash a pervious concrete preparation method who reveals cobble, its concrete technical scheme is:
The first step: first prepare crushed rock base course, adopt the graded broken stone of 5～31.5mm, thickness 200mm, mechanical ramming;
Second step: plain color structural sheet is plain color pervious concrete, takes in proportion each component, plain color structural sheet proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3rubble, 350～450kg/m
3cement, 0.9～1.2 kg/m
3polypropylene fibre, 110～130kg/m
3water;
The 3rd step: plain color agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into rubble and stir 15s, each component is mixed;
The 4th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 5th step: go out machine, build, vibrate, roll-in;
The 6th step: before lower-layer concrete initial set, cobble upper layer pervious concrete is revealed in preparation, takes in proportion each component, dew cobble upper layer proportioning is: 6～10 ㎏/m
3agglutinate, 1500～1700 ㎏/m
3cobble, 350～450kg/m
3cement, 0.9～1.2 kg/m
3polypropylene fibre, 110～130kg/m
3water;
The 7th step: agglutinate, cement, polypropylene fibre are stirred to 30s in concrete mixer, then drop into colored cobble and stir 15s, each component is mixed;
The 8th step: suitable quantity of water is added in stirrer and stirred, observe concrete consistence simultaneously;
The 9th step: go out machine, build, vibrate, roll-in;
The tenth step: spray the agent of the undisguised material of washing before revealing the initial set of cobble upper layer pervious concrete;
The 11 step: when final set, water rinses and reveals cobble upper layer to exposing colored cobble;
The 12 step: maintenance; Reveal cobble upper layer spraying abrasion-proof protective material.
2. a kind of pervious concrete preparation method who reveals cobble that washes according to claim 1, washing described in it is characterized in that undisguisedly expects that agent is chemicals, this chemicals is a kind of compound retardant, mainly formed by naphthalene water reducer, white sugar, Seignette salt, tripoly phosphate sodium STPP, hydroxyethylmethyl-cellulose, water, each constituent mass per-cent is: naphthalene water reducer 8% ~ 15%, white sugar 2% ~ 6%, Seignette salt 2% ~ 5%, tripoly phosphate sodium STPP 3% ~ 6%, hydroxyethylmethyl-cellulose 0.02% ~ 0.08%, all the other are water.
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| CN107805078A (en) * | 2017-11-24 | 2018-03-16 | 廊坊荣盛混凝土有限公司 | The preparation of iron tailings stone pervious concrete |
| CN115959859A (en) * | 2022-11-30 | 2023-04-14 | 琼海鑫海混凝土有限公司 | Exposed aggregate concrete and construction method thereof |
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