CN113389103A - Composite steel fiber reinforced pervious concrete pavement structure and preparation method thereof - Google Patents
Composite steel fiber reinforced pervious concrete pavement structure and preparation method thereof Download PDFInfo
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- CN113389103A CN113389103A CN202110713936.9A CN202110713936A CN113389103A CN 113389103 A CN113389103 A CN 113389103A CN 202110713936 A CN202110713936 A CN 202110713936A CN 113389103 A CN113389103 A CN 113389103A
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- steel fiber
- fiber reinforced
- pervious concrete
- surface layer
- fine aggregate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 96
- 239000000835 fiber Substances 0.000 title claims abstract description 96
- 239000010959 steel Substances 0.000 title claims abstract description 96
- 239000011380 pervious concrete Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract description 48
- 239000010410 layer Substances 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a composite steel fiber reinforced pervious concrete pavement structure and a preparation method thereof, wherein the pavement structure comprises a macadam bottom base layer, a steel fiber reinforced coarse aggregate pervious concrete intermediate layer and a steel fiber reinforced fine aggregate pervious concrete surface layer which are sequentially paved from bottom to top; a plurality of drain holes are formed in the steel fiber reinforced fine aggregate pervious concrete surface layer, the drain holes penetrate through the steel fiber reinforced fine aggregate pervious concrete surface layer in the vertical direction, and a filter screen used for preventing solid sundries from entering the drain holes is fixed at the position, located at the opening at the top of the drain holes, of the steel fiber reinforced fine aggregate pervious concrete surface layer. According to the invention, the macadam bottom base layer, the steel fiber reinforced coarse aggregate pervious concrete intermediate layer and the steel fiber reinforced fine aggregate pervious concrete surface layer are ingeniously compounded to form an integral structure, so that the pavement structure with certain strength and excellent drainage performance is obtained, the problems in the current urban development can be effectively relieved, and the application prospect is excellent.
Description
Technical Field
The invention belongs to the technical field of road construction, and particularly relates to a composite steel fiber reinforced pervious concrete pavement structure and a preparation method thereof.
Background
With the rapid development of economic society and urbanization, the earth surface of modern cities is full of the waterproof pavement of reinforced concrete, and compared with natural soil, the modern earth surface brings a series of problems to the cities: the impervious pavement blocks the infiltration of rainwater, and the urban ground is easy to sink due to the excessive extraction of underground water; when heavy rain or heavy rain occurs, a large amount of rainwater is concentrated on the motor vehicle and the bicycle lane, so that water is accumulated on the road surface in a large range; the impermeable road surface reduces the humidity of the urban air, accelerates the formation of the urban heat island effect, and the water ecology can not be normally circulated, thus breaking the balance of the urban ecological system.
The pervious concrete can lead rainwater to flow into the ground, so that the pervious concrete is widely popularized and applied. The pervious concrete can relieve the environmental problem that the underground water level of a city drops sharply, can also effectively eliminate the harm of oil compounds and the like on the ground to the environment, and plays the roles of maintaining ecological balance and relieving the urban heat island effect.
Pervious concrete also presents problems during use, such as: the pervious concrete does not contain fine aggregate and belongs to porous lightweight concrete, so the pervious concrete has low strength and poor durability; the surface layer of the pervious concrete consists of cement, coarse aggregate and the like, has low bonding strength and is easy to crack; when the pervious concrete is used, the pores of the pervious concrete are easily blocked by dust, organic substances and the like, so that the water permeability of the pervious concrete is poor, and the problem that water is still easily accumulated on a surface layer during heavy rainstorm is solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a composite steel fiber reinforced pervious concrete pavement structure, which can reduce the cracking condition of the surface layer of pervious concrete, effectively improve the water permeability of the pervious concrete and effectively reduce the problem that the surface layer of the pervious concrete is easy to accumulate water during heavy rainstorm.
In order to achieve the purpose, the invention adopts the technical scheme that:
a composite steel fiber reinforced pervious concrete pavement structure comprises a macadam bottom base layer, a steel fiber reinforced coarse aggregate pervious concrete middle layer and a steel fiber reinforced fine aggregate pervious concrete surface layer which are sequentially laid from bottom to top; a plurality of drain holes are formed in the steel fiber reinforced fine aggregate pervious concrete surface layer, the drain holes penetrate through the steel fiber reinforced fine aggregate pervious concrete surface layer in the vertical direction, and a filter screen used for preventing solid impurities from entering the drain holes is fixed on the position, located at the opening at the top of the drain holes, of the steel fiber reinforced fine aggregate pervious concrete surface layer. Further, the drain holes are uniformly distributed in an array form; the filter screen is a stainless steel wire mesh. The stainless steel wire mesh can prevent the drain holes from being blocked by dust, other solid matters and the like, avoid the water permeability of the drain holes from being deteriorated, and ensure that the surface layer can still effectively drain water during heavy rainstorm.
As a preferable technical scheme, the thickness of the base course at the bottom of the macadam is 15-20cm, and the thickness can be selected from values of 15cm, 17cm, 20cm and the like according to specific construction environment and application requirements; the components of the gravel bottom base layer comprise gravel, clay and sand, and the maximum particle size of the components does not exceed 50 mm.
As a preferable technical scheme, the thickness of the steel fiber reinforced coarse aggregate pervious concrete intermediate layer is 20-25cm, and the thickness can be selected to be 20cm, 23cm or 25cm and other numerical values according to specific construction environment and application requirements; the steel fiber reinforced coarse aggregate pervious concrete intermediate layer is prepared from the following components in parts by weight:
as a preferred technical scheme, the thickness of the steel fiber reinforced fine aggregate pervious concrete surface layer is 4-6cm, and the thickness can be selected to be 4cm, 5cm or 6cm and other numerical values according to specific construction environment and application requirements; the steel fiber reinforced fine aggregate pervious concrete surface layer is prepared from the following components in parts by weight:
the invention also aims to provide a preparation method of the steel fiber reinforced pervious concrete pavement structure, which comprises the following steps:
weighing cement, water, steel fiber and coarse aggregate according to a ratio, uniformly mixing the cement, the water and the steel fiber to obtain cement paste, adding the coarse aggregate into the cement paste, and continuously uniformly mixing to obtain steel fiber reinforced coarse aggregate permeable concrete intermediate layer slurry; preparing steel fiber reinforced fine aggregate pervious concrete surface layer slurry according to the same method;
paving the steel fiber reinforced coarse aggregate pervious concrete intermediate layer slurry on the top of the base course at the bottom of the gravel, and curing and forming to form a steel fiber reinforced coarse aggregate pervious concrete intermediate layer; and then paving the steel fiber reinforced fine aggregate pervious concrete surface layer slurry on the top of the steel fiber reinforced coarse aggregate pervious concrete intermediate layer, vertically placing a plurality of hollow cylindrical molds in the steel fiber reinforced fine aggregate pervious concrete surface layer slurry according to design requirements, fixing a filter screen at an opening at the top of each hollow cylindrical mold, and curing and molding the steel fiber reinforced fine aggregate pervious concrete surface layer slurry to obtain the steel fiber reinforced fine aggregate pervious concrete surface layer with the drain holes.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a composite steel fiber reinforced pervious concrete pavement structure, which comprises the following components in part by weight: the base course at the bottom of the gravels contains the gravels with large particle size, so that the gravels are internally provided with a plurality of pores, and the water drainage function is better; the steel fiber reinforced coarse aggregate pervious concrete intermediate layer contains coarse aggregate with larger grain size, and because the strength of the coarse aggregate is larger than that of the fine aggregate, and the reinforcing effect of the steel fiber is added, the strength of the intermediate layer is larger than that of common fine aggregate concrete, and because the gaps between the coarse aggregates are relatively larger, the intermediate layer has stronger drainage effect; the steel fiber reinforced fine aggregate pervious concrete surface layer consists of fine aggregate with small grain diameter and steel fiber, and the steel fiber has high strength and a certain tensile effect, so that the surface layer has good strength and is not easy to crack; meanwhile, the surface layer has good water permeability by forming the drain holes in the surface layer; according to the invention, the macadam bottom base layer, the steel fiber reinforced coarse aggregate pervious concrete intermediate layer and the steel fiber reinforced fine aggregate pervious concrete surface layer are ingeniously compounded to form an integral structure, so that the pavement structure with certain strength and excellent drainage performance is obtained, the problems in the current urban development can be effectively relieved, and the application prospect is excellent.
Drawings
FIG. 1 is a perspective view of a composite steel fiber reinforced pervious concrete pavement structure provided by the present invention;
FIG. 2 is a top view of a composite steel fiber reinforced pervious concrete pavement structure provided by the present invention;
reference numerals: 1-a macadam bottom base layer, 2-a steel fiber reinforced coarse aggregate pervious concrete middle layer, 3-a steel fiber reinforced fine aggregate pervious concrete surface layer, 4-a drain hole and 5-a filter screen.
Detailed Description
The invention is further described with reference to the following figures and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following examples, the cement used was C25 portland cement; the steel fiber is a chopped steel fiber, the diameter is 0.12mm, the length is 10mm, and the tensile strength of the chopped steel fiber is more than or equal to 2850 Mpa; other raw materials are conventional in the field, and a person skilled in the art can select appropriate raw materials according to actual situations.
Referring to fig. 1-2, a composite steel fiber reinforced pervious concrete pavement structure comprises a macadam bottom base layer 1, a steel fiber reinforced coarse aggregate pervious concrete middle layer 2 and a steel fiber reinforced fine aggregate pervious concrete surface layer 3 which are sequentially laid from bottom to top; a plurality of drain holes 4 are formed in the steel fiber reinforced fine aggregate pervious concrete surface layer 3, the drain holes 4 penetrate through the steel fiber reinforced fine aggregate pervious concrete surface layer 3 in the vertical direction, and a filter screen 5 used for preventing solid impurities from entering the drain holes 4 is fixed at the position, located at the top opening of the drain holes 4, of the steel fiber reinforced fine aggregate pervious concrete surface layer 3. In this embodiment, the filter screen 5 is a stainless steel wire mesh; the diameter of the drainage hole 4 is 3cm, a plurality of drainage holes are uniformly distributed in an array form, the transverse distance between every two adjacent drainage holes is 405mm, and the longitudinal distance is 840 mm.
The preparation method of the composite steel fiber reinforced pervious concrete pavement structure comprises the following steps:
weighing 400 parts by weight of cement, 120 parts by weight of water, 15 parts by weight of steel fiber and 1800 parts by weight of coarse aggregate (the particle size is 9.5-13.2 mm), firstly mixing and stirring the cement, the water and the steel fiber for 1 minute to obtain cement paste, then adding the coarse aggregate into the cement paste, continuously mixing and stirring for 2 minutes, so that the cement paste can wrap the surface of the coarse aggregate to form a uniform structure, and thus obtaining the steel fiber reinforced coarse aggregate pervious concrete intermediate layer slurry; replacing the coarse aggregate with fine aggregate (the particle size is 2.4-4.75 mm), and preparing the steel fiber reinforced fine aggregate pervious concrete surface layer slurry according to the same proportion and method;
paving the steel fiber reinforced coarse aggregate pervious concrete intermediate layer slurry on the top of the base course at the bottom of the gravel, and curing and forming to form a steel fiber reinforced coarse aggregate pervious concrete intermediate layer; then paving the slurry of the steel fiber reinforced fine aggregate pervious concrete surface layer on the top of the steel fiber reinforced coarse aggregate pervious concrete intermediate layer, vertically placing a hollow cylindrical mold and a stainless steel wire gauze in the slurry of the steel fiber reinforced fine aggregate pervious concrete surface layer according to design requirements, and curing and molding the slurry of the steel fiber reinforced fine aggregate pervious concrete surface layer to obtain the steel fiber reinforced fine aggregate pervious concrete surface layer with the drain holes; finally, a composite steel fiber reinforced pervious concrete pavement structure is obtained, wherein the bottom of the macadam bottom base layer is 17cm thick, the middle of the macadam bottom base layer is a steel fiber reinforced coarse aggregate pervious concrete middle layer which is 20cm thick, and the top of the macadam bottom base layer is a steel fiber reinforced fine aggregate pervious concrete surface layer which is 4cm thick.
Claims (6)
1. The utility model provides a combined type steel fiber reinforcement concrete road surface structure that permeates water which characterized in that: the concrete comprises a macadam bottom base layer, a steel fiber reinforced coarse aggregate pervious concrete middle layer and a steel fiber reinforced fine aggregate pervious concrete surface layer which are sequentially paved from bottom to top; a plurality of drain holes are formed in the steel fiber reinforced fine aggregate pervious concrete surface layer, the drain holes penetrate through the steel fiber reinforced fine aggregate pervious concrete surface layer in the vertical direction, and a filter screen used for preventing solid impurities from entering the drain holes is fixed on the position, located at the opening at the top of the drain holes, of the steel fiber reinforced fine aggregate pervious concrete surface layer.
2. The composite steel fiber reinforced pervious concrete pavement structure of claim 1, wherein: the thickness of the base course at the bottom of the macadam is 15-20 cm; the components of the gravel bottom base layer comprise gravel, clay and sand, and the maximum particle size of the components does not exceed 50 mm.
3. The composite steel fiber reinforced pervious concrete pavement structure of claim 1, wherein: the thickness of the steel fiber reinforced coarse aggregate pervious concrete middle layer is 20-25 cm; the steel fiber reinforced coarse aggregate pervious concrete intermediate layer is prepared from the following components in parts by weight:
the particle size of the coarse aggregate is 9.5-13.2 mm.
4. The composite steel fiber reinforced pervious concrete pavement structure of claim 1, wherein: the thickness of the steel fiber reinforced fine aggregate pervious concrete surface layer is 4-6 cm; the steel fiber reinforced fine aggregate pervious concrete surface layer is prepared from the following components in parts by weight:
the particle size of the fine aggregate is 2.4-4.75 mm.
5. The composite steel fiber reinforced water-permeable concrete pavement structure according to any one of claims 1 to 4, wherein: the drain holes are uniformly distributed in an array form; the filter screen is a stainless steel wire mesh.
6. The method for preparing a composite steel fiber reinforced pervious concrete pavement structure as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
weighing cement, water, steel fiber and coarse aggregate according to a ratio, uniformly mixing the cement, the water and the steel fiber to obtain cement paste, adding the coarse aggregate into the cement paste, and continuously uniformly mixing to obtain steel fiber reinforced coarse aggregate permeable concrete intermediate layer slurry; preparing steel fiber reinforced fine aggregate pervious concrete surface layer slurry according to the same method;
paving the steel fiber reinforced coarse aggregate pervious concrete intermediate layer slurry on the top of the base course at the bottom of the gravel, and curing and forming to form a steel fiber reinforced coarse aggregate pervious concrete intermediate layer; and then paving the steel fiber reinforced fine aggregate pervious concrete surface layer slurry on the top of the steel fiber reinforced coarse aggregate pervious concrete intermediate layer, vertically placing a plurality of hollow cylindrical molds in the steel fiber reinforced fine aggregate pervious concrete surface layer slurry according to design requirements, fixing a filter screen at an opening at the top of each hollow cylindrical mold, and curing and molding the steel fiber reinforced fine aggregate pervious concrete surface layer slurry to obtain the steel fiber reinforced fine aggregate pervious concrete surface layer with the drain holes.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118668886A (en) * | 2024-06-13 | 2024-09-20 | 禹智环保科技(深圳)有限公司 | Environment-friendly regenerated mixed sand-based permeable concrete material and preparation method thereof |
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CN207003174U (en) * | 2017-03-28 | 2018-02-13 | 重庆大学 | Anti-block water permeable concrete road surface structure |
CN107881874A (en) * | 2017-11-13 | 2018-04-06 | 福建工程学院 | A kind of ecological permeable concrete structure road surface with holes |
CN109928697A (en) * | 2019-03-13 | 2019-06-25 | 上海市城市建设设计研究总院(集团)有限公司 | Pervious concrete of Stainless-steel fibre and preparation method thereof |
CN209024915U (en) * | 2018-09-17 | 2019-06-25 | 云南景然环境建设股份有限公司 | A kind of pervious concrete pavement structure |
CN212270582U (en) * | 2020-05-21 | 2021-01-01 | 中建水务环保有限公司 | Distributing permeable concrete pavement structure |
CN216237944U (en) * | 2021-06-25 | 2022-04-08 | 中铁四局集团第五工程有限公司 | Combined type steel fiber reinforced concrete road surface structure that permeates water |
-
2021
- 2021-06-25 CN CN202110713936.9A patent/CN113389103A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980066436A (en) * | 1997-01-24 | 1998-10-15 | 최순호 | High strength pitched concrete |
CN104018409A (en) * | 2014-06-26 | 2014-09-03 | 上海建工材料工程有限公司 | Sustainable hybrid pervious concrete pavement structure |
CN207003174U (en) * | 2017-03-28 | 2018-02-13 | 重庆大学 | Anti-block water permeable concrete road surface structure |
CN107881874A (en) * | 2017-11-13 | 2018-04-06 | 福建工程学院 | A kind of ecological permeable concrete structure road surface with holes |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118668886A (en) * | 2024-06-13 | 2024-09-20 | 禹智环保科技(深圳)有限公司 | Environment-friendly regenerated mixed sand-based permeable concrete material and preparation method thereof |
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