CN111005288A - Assembled water collecting road edge stone and preparation method thereof - Google Patents
Assembled water collecting road edge stone and preparation method thereof Download PDFInfo
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- CN111005288A CN111005288A CN201911324533.4A CN201911324533A CN111005288A CN 111005288 A CN111005288 A CN 111005288A CN 201911324533 A CN201911324533 A CN 201911324533A CN 111005288 A CN111005288 A CN 111005288A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000004575 stone Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 94
- 238000011049 filling Methods 0.000 claims abstract description 22
- 239000012466 permeate Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 63
- 239000000843 powder Substances 0.000 claims description 52
- 239000000203 mixture Substances 0.000 claims description 30
- 239000004568 cement Substances 0.000 claims description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 22
- 239000000049 pigment Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 8
- 235000014653 Carica parviflora Nutrition 0.000 claims description 7
- 241000243321 Cnidaria Species 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 229910021487 silica fume Inorganic materials 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 239000011325 microbead Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 10
- 230000000694 effects Effects 0.000 abstract description 14
- 239000000047 product Substances 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 7
- 238000009472 formulation Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000005034 decoration Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000011374 ultra-high-performance concrete Substances 0.000 description 4
- 239000011380 pervious concrete Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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- 239000001023 inorganic pigment Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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Images
Classifications
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- 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
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
- E01C11/222—Raised kerbs, e.g. for sidewalks ; Integrated or portable means for facilitating ascent or descent
-
- 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
-
- 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
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
-
- 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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (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 belongs to the technical field of concrete block products, and particularly relates to an assembled water-collecting curb stone and a preparation method thereof. The road edge stone comprises a road edge stone main body provided with a hollow channel, wherein the bottom surface of the hollow channel is positioned below the horizontal line of a road surface; the curbstone main body consists of a first structural member and a second structural member, wherein the first structural member is arranged at the side part, close to the filling, of the curbstone main body, the second structural member is arranged at the lower part, located at the horizontal line of the road surface, of the curbstone main body, the side part, close to the road surface, of the curbstone main body, the side part, located above the horizontal line of the road surface, of the curbstone main body, and the first structural member and the second structural member are integrally formed to form the hollow channel; the first structural member is a water permeable structural member, and moisture between the filling and the curbstone main body permeates into the hollow channel through the first structural member to be stored. The assembled water collecting road edge stone has the characteristics of light weight, good decorative effect and good water collecting effect.
Description
Technical Field
The invention belongs to the technical field of concrete block products, and particularly relates to an assembled water-collecting curb stone and a preparation method thereof.
Background
The curb stone is also called a kerb stone, is a strip-shaped block-shaped object arranged at the edge of a road surface, is used as the boundary of the road, separates the road from an isolation green belt or a sidewalk, and can play the roles of retaining water, retaining soil and the like and also play the role of attractive decoration of the road. Traditional curb stone is mostly solid natural stone or solid concrete prefabricated component, only has single isolation function, for getting rid of surface ponding, still needs to set up drain pipe, ditch in addition. In order to improve the situation, a hollow road edge stone or a road edge stone with a hydrophobic hole is designed, the scheme has the main advantages that the functions of the drainage pipeline on the roadside and the existing road edge stone are combined, the function of collecting road area water and separating roads is achieved, but the design also has the defects that the joint construction is not convenient enough, and a water collecting inlet is easy to block.
Therefore, the prior art is in need of improvement.
Disclosure of Invention
The invention aims to provide an assembled water collecting curb and a preparation method thereof, and aims to solve the technical problems that the construction of the interface of the existing curb is not convenient enough and a water collecting inlet is easy to block.
In order to achieve the purpose, the invention adopts the following technical scheme: an assembled catchment curbstone used between the edge of the road surface and the filling soil, the assembled catchment curbstone comprises a curbstone body provided with a hollow channel, the bottom surface of the hollow channel is positioned below the horizontal line of the road surface; the curbstone main body consists of a first structural member and a second structural member, the first structural member is arranged on the side, close to the filling, of the curbstone main body above the horizontal line of the pavement, the second structural member is arranged on the side, close to the pavement, of the curbstone main body above the horizontal line of the pavement, and the hollow channel is formed after the first structural member and the second structural member are integrally formed; the first structural member is a water permeable structural member, and moisture between the filling and the curbstone main body permeates into the hollow channel through the first structural member to be stored; wherein,
the first structural member is made of first concrete, and raw materials of the first concrete comprise the following components in parts by weight: 1100 parts of aggregate 700-; the water-to-glue ratio of the raw materials of the first concrete is 0.2-0.26;
the second structural member is made of a second concrete: the second concrete comprises the following raw materials in parts by weight: 800 portions of fine aggregate 550-containing materials, 950 portions of second inorganic active powder 650-containing materials, 900 portions of coarse aggregate 600-containing materials, 12-20 portions of second water reducing agent and 1-20 portions of second pigment; the water-to-glue ratio of the raw materials of the second concrete is 0.16-0.22.
The assembled water collecting curb provided by the invention is a novel curb, wherein a main body of the curb consists of a first structural member with a water permeable function and an ultrahigh-performance second structural member with high compressive strength and containing coarse aggregate, and the first structural member and the second structural member are integrally formed to form a hollow channel. Therefore, the assembled water collecting curb provided by the invention has the characteristics of light weight, good decoration effect and good water collecting effect, and has good application prospect in the field of curb preparation.
The invention also provides a preparation method of the assembled water collecting curb stone, which comprises the following steps:
mixing the raw materials of the first concrete with water to obtain a first mixture; mixing the raw material of the second concrete with water to obtain a second mixture;
providing a curb stone mold, distributing the first mixture and the second mixture at corresponding positions in the curb stone mold according to the designed size, then covering an isolation moisture retention film for vacuum vibration pressing, then curing to form the first structural member and the second structural member, and obtaining a curb stone main body after demolding;
and grinding and polishing the surface of a second structural member in the curbstone main body to obtain the assembled water-collecting curbstone.
The preparation method provided by the invention has the advantages of simple process and low cost, and the finally obtained assembled water collecting curb has the characteristics of light weight, good decoration effect and good water collecting effect, and has wide market application prospect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic sectional structure view of an assembled catchment road stone according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a constructed water collecting curb according to an embodiment of the present invention;
wherein, in the figures, the respective reference numerals:
1: a curb body; 10: a hollow channel; 110: a bottom surface of the hollow channel; 11: a second structural member; 12: a first structural member;
2; a pavement; 3: and (6) filling soil.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one aspect, the embodiment of the present invention provides a fabricated catchment road edge stone, as shown in fig. 1 and 2, for use between the edge of a road surface 2 and a filling 3, the fabricated catchment road edge stone comprising a road edge stone body 1 provided with a hollow channel 10, a bottom surface 110 of the hollow channel being located below a horizontal line of the road surface 2; the curbstone main body 1 consists of a first structural member 12 and a second structural member 11, the first structural member 12 is arranged on the side part, close to the filling 3, of the curbstone main body 1 above the horizontal line of the road surface 2, the second structural member 11 is arranged on the side part, close to the road surface 2, of the curbstone main body 1 above the horizontal line of the road surface 2 and below the horizontal line of the road surface 2, and the hollow channel 10 is formed after the first structural member 12 and the second structural member 11 are integrally formed; the first structural member 12 is a water permeable structural member, and moisture between the filling 2 and the curbstone main body 1 permeates into the hollow channel 10 through the first structural member 12 to be stored; wherein,
the first structural member 12 is made of first concrete, and the raw materials of the first concrete comprise the following components in parts by weight: 1100 parts of aggregate 700-; the water-to-glue ratio of the raw materials of the first concrete is 0.2-0.26;
the second structural element 11 is made of a second concrete: the second concrete comprises the following raw materials in parts by weight: 800 portions of fine aggregate 550-containing materials, 950 portions of second inorganic active powder 650-containing materials, 900 portions of coarse aggregate 600-containing materials, 12-20 portions of second water reducing agent and 1-20 portions of second pigment; the water-to-glue ratio of the raw materials of the second concrete is 0.16-0.22.
The assembled water-collecting curbstone provided by the embodiment of the invention is a novel curbstone, wherein a curbstone main body consists of a first structural component with a water permeable function and an ultrahigh-performance second structural component with high compressive strength and containing coarse aggregate, and the first structural component and the second structural component are integrally formed to form a hollow channel.
The road edge stone is a building block product and is positioned between the edge of the road surface and filling after construction, the filling can be filling for isolating a green belt or a sidewalk, and the road surface can be a lane road surface, so that the green belt or the sidewalk is separated from a lane. In conclusion, the assembled water collecting curb provided by the embodiment of the invention has the characteristics of light weight, good decoration effect, good drainage and water collection effect, sound absorption, noise reduction, humidity adjustment and the like, can reduce the water accumulation phenomenon of a green belt, improves the drainage performance of the green belt, requires only a small amount of mortar for assembled construction, is neat and civilized in construction site, and can save the construction cost due to light weight; and the color is striking, so that the driver can be obviously warned, the lane and the sidewalk can be more easily distinguished at night, and the probability of causing traffic accidents is reduced.
The raw material of the first concrete is used for preparing the first concrete constituting the first structural member. Comprises the following components in parts by weight: 1100 parts of aggregate 700-; the water-to-glue ratio of the raw materials of the first concrete is 0.2-0.26; specifically, the aggregate may be 700 parts, 800 parts, 900 parts, 1000 parts, 1100 parts, etc., the first inorganic active powder may be 400 parts, 500 parts, 600 parts, etc., the first pigment may be 10 parts, 20 parts, 30 parts, etc., and the first water reducing agent may be 2 parts, 3 parts, 5 parts, etc. The raw materials can be prepared into concrete with good water permeability. The raw materials of the second concrete are used for preparing the second concrete for forming the second structural member. Comprises the following components in parts by weight: 800 portions of fine aggregate 550-containing materials, 950 portions of second inorganic active powder 650-containing materials, 900 portions of coarse aggregate 600-containing materials, 12-20 portions of second water reducing agent and 1-20 portions of second pigment; the water-to-glue ratio of the raw materials of the second concrete is 0.16-0.22; specifically, the fine aggregate may be 550 parts, 600 parts, 650 parts, 700 parts, 750 parts, 800 parts, etc., the second inorganic active powder 650 and 950 parts may be 650 parts, 700 parts, 800 parts, 950 parts, etc., the coarse aggregate may be 600 parts, 650 parts, 700 parts, 750 parts, 800 parts, 850 parts, 900 parts, etc., the second water reducing agent may be 12 parts, 14 parts, 15 parts, 16 parts, 18 parts, 20 parts, etc., and the second pigment may be 1 part, 3 parts, 5 parts, 8 parts, 10 parts, 15 parts, 20 parts, etc. The raw material can be prepared into the ultra-high performance concrete with the compressive strength of 100-150MPa and containing coarse aggregate.
Aggregate, also known as "aggregate", refers to a granular material in concrete and mortar that serves as a framework and a filler. The coarse aggregate generally refers to aggregate with a particle size of more than 5mm, and the fine aggregate generally refers to a granular loose material with a particle size of less than 4.75mm and plays a role of framework or filling in concrete.
In one embodiment, in the raw materials of the first concrete, the aggregate comprises one or more of ceramsite and coral sand with the particle size of 2-5 mm; the aggregate not only can reduce the weight of the curbstone, but also has good water absorption and storage effects, the ceramsite or the coral sand can absorb part of rainwater in rainy days, and after the filled soil is dried, the ceramsite or the coral sand can release part of moisture so as to adjust the humidity in greenbelts above the filled soil and the air of the road surface. The first inorganic active powder comprises cement (such as 42.5 cement, 42.5R cement, 52.5R cement and the like) with the strength grade of more than or equal to 42.5 and a blended active powder material; wherein the blended active powder material comprises one or more of silica fume, mineral powder, glass micro-beads and zeolite powder. Specifically, the mass ratio of the cement, the silica fume, the mineral powder, the glass beads and the zeolite powder is 1 (0.5-1): 0-0.3): 0-0.2. The concrete with the water-cement ratio of 0.2-0.26 prepared from the first inorganic active powder can better meet the compression resistance requirement. The first water reducing agent can be a polycarboxylic acid type high-performance water reducing agent, and the first pigment can be various organic pigments and inorganic pigments which can be used for concrete. The water-gel ratio refers to the ratio of the water consumption of concrete to the consumption of a cementing material (such as inorganic active powder in the embodiment of the invention); the water-cement ratio of the raw materials of the first concrete is 0.2-0.26, so that the compressive strength of the manufactured first concrete is not less than 40MPa, the compressive strength of the first structural member is not less than 40MPa, water can permeate in the assembled catchment curbstone well, the manufactured first structural member is a porous water permeable structural member, the porous structure can absorb part of noise, and rainwater on filling (such as a green belt) can permeate into the hollow channel.
In one embodiment, the coarse aggregate in the raw material of the second concrete comprises colored macadam with the grain diameter of 5-30 mm. The fine aggregate has a particle size of 0.15mm to 4.75mm, and specifically includes one or more of river sand, machine-made sand, and quartz sand. The coarse aggregate and the fine aggregate in parts by weight play a good skeleton role in the second concrete. The second inorganic active powder comprises cement (such as 42.5 cement, 42.5R cement, 52.5R cement and the like) with the strength grade of more than or equal to 42.5 and a blended active powder material; wherein the blended active powder material comprises one or more of silica fume, mineral powder, glass micro-beads and zeolite powder. Specifically, the mass ratio of the cement, the silica fume, the mineral powder, the glass beads and the zeolite powder is 1 (0.5-1): 0-0.3): 0-0.2. The second inorganic active powder is prepared into concrete with the water-cement ratio of 0.16-0.22, and can better meet the compression resistance requirement. The second water reducing agent can be a polycarboxylic acid high-performance water reducing agent, and the second pigment is various organic pigments and inorganic pigments for concrete, so that a good decorative effect is achieved. The water-cement ratio of the raw materials of the second concrete is 0.16-0.22, which can meet the requirement that the prepared second concrete reaches the compressive strength of 100-.
In one embodiment, in the fabricated catchment curb, a bottom surface of the hollow channel is concave. This allows for a good storage of moisture (e.g. standing water or rain water) that has penetrated through the first structural member between the fill and the body of the curb. Further, the width of the hollow channel is 100-200 mm, and the height of the hollow channel is 40-70 mm. Specifically, the width of the hollow channel is 150mm, and the height of the hollow channel is 60 mm.
In one embodiment, the height of the first structure is 2/3-3/4 of the height of the body of the curbstone. Specifically, the height of the first structure is 2/3 the height of the body of the curbstone.
In one embodiment, the thickness of the curbstone main body at the upper end of the hollow channel is 50-100 mm, and the thickness of the curbstone main body at the lower end of the hollow channel is 50-100 mm. Specifically, the thickness of the body of the curbstone at the upper end of the hollow channel is the same as the thickness at the lower end of the hollow channel. Further, the contact surface of the first structural member and the second structural member at the upper end of the hollow channel is superposed with the perpendicular bisector of the upper end of the hollow channel of the curbstone main body, namely, the first structural member and the second structural member are symmetrically formed at the upper end of the hollow channel.
In one embodiment, the thickness of the side of the curbstone main body close to the road surface (i.e. the thickness of the second structural member close to the road surface) is 50-100 mm, and the thickness of the side of the curbstone main body close to the filling (i.e. the thickness of the first structural member close to the filling) is 50-100 mm. Specifically, the thickness of the body of the curbstone on the side close to the road surface is the same as the thickness of the body of the curbstone on the side close to the filling.
In one embodiment, the body of the curbstone is provided with mating rebates at each end of the hollow channel. Namely, the two ends of the assembled permeable road edge stones are respectively provided with the rectangular tongue-and-groove, and when the road edge stones are assembled, the rectangular tongue-and-groove is inserted into the rectangular groove, so that the assembled permeable road edge stones can be assembled and communicated through the tongue-and-groove.
After the assembly type permeable road edge stone is maintained, the outer surface (namely, the side close to the road surface) of the second structural member is polished by a polishing process, so that the color aggregate is exposed, and the decorative effect is enhanced.
On the other hand, the embodiment of the invention also provides a preparation method of the assembled water collecting curb, which comprises the following steps:
s01: mixing the raw materials of the first concrete with water to obtain a first mixture; mixing the raw material of the second concrete with water to obtain a second mixture;
s02: providing a curb stone mold, distributing the first mixture and the second mixture at corresponding positions in the curb stone mold according to the designed size, then covering an isolation moisture retention film for vacuum vibration pressing, then curing to form the first structural member and the second structural member, and obtaining a curb stone main body after demolding;
s03: and grinding and polishing the surface of a second structural member in the curbstone main body to obtain the assembled water-collecting curbstone.
The preparation method provided by the embodiment of the invention has the advantages of simple process and low cost, and the finally obtained assembled water collecting curb has the characteristics of light weight, good decoration effect and good water collecting effect, and has wide market application prospect.
The specific preparation process of the first mixture comprises the following steps: firstly, stirring all aggregates, first pigments and 40% by weight of water for 60-90 seconds in advance, then adding all the first inorganic active powder, stirring for 60-90 seconds, then adding all the additives (first water reducing agents) and the rest 60% of water, and fully stirring for 90-120 seconds for later use. The working performance of the first mixture is stirred for 10-30 seconds, and the initial setting and setting time of the mixture after stirring and mixing is not less than 60 minutes.
The specific preparation process of the second mixture comprises the following steps: premixing all fine aggregate, coarse aggregate and second pigment powder for 2-4 minutes, adding all second inorganic active powder and 40% of water by weight, stirring for 1-2 minutes, adding all additives (second water reducing agents) and the rest 60% of water, fully stirring for 7-9 minutes for later use, testing the working performance of the stirred second mixture to be 5-30 s, and setting the initial setting time to be not less than 60 minutes after stirring and mixing.
Further, the conditions of the vacuum vibration pressing include: the vacuumizing time is more than or equal to 60s, and the pressing time is more than or equal to 120 s; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is more than or equal to 1MPa, and the pressure is more than or equal to 5000 kN. The conditions of the curing treatment include: curing for 6-8 hours at 40 ℃, and then heating to 80-90 ℃ for curing for 12-16 hours; the humidity of the curing treatment is more than or equal to 75 percent.
In a specific embodiment, the preparation method of the assembled catchment road edge stone comprises the following manufacturing steps:
s1, calculating the consumption of raw materials according to the raw material formula of the first concrete of the fabricated catchment road edge stone, firstly stirring all aggregates, first pigment and 40% by weight of water for 60-90 seconds in advance, then adding all first inorganic active powder, stirring for 60-90 seconds, then adding all additives and the rest 60% of water, and fully stirring for 90-120 seconds to obtain a first mixture (the stirring working performance is 10-30 seconds in a Vibro consistency test, and the initial setting and setting time after stirring and mixing is not less than 60 minutes for later use;
s2, calculating the using amount of each raw material according to the principle formula of the second concrete of the fabricated catchment curb stone, premixing all fine aggregate, coarse aggregate and second pigment powder for 2-4 minutes, adding all second inorganic active powder and 40% of water by weight, stirring for 1-2 minutes, adding all additives and the rest 60% of water, and fully stirring for 7-9 minutes to obtain a second mixture (the stirring working performance is 5-30 seconds, and the initial setting and setting time is not less than 60 minutes after stirring and mixing for later use;
s3, preparing a road edge stone mold, and respectively weighing the prepared mixture obtained in the steps S1 and S2 according to the design size to uniformly distribute the mixture at the design position of the mold;
s4, covering an isolation and moisture retention film on the mixture in the mold in the step S3, then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing (the vacuumizing time is not less than 60S, the pressing time is not less than 120S, the vacuum pressure is-0.07 to-0.1 MPa, the pressure intensity load of the press is not less than 1MPa, and the pressure is not less than 5000 kN);
s5, curing the road edge stone pressed in the step S4 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours (keeping the humidity above 75% in the high-temperature curing process) to obtain a blank road edge stone main body;
and S6, grinding and polishing the surface of the second structural part, close to the road surface, of the blank road edge stone main body obtained in the step S5 to obtain the assembled water collecting road edge stone.
The invention is described in further detail with reference to a part of the test results, which are described in detail below with reference to specific examples.
Example 1
An assembled catchment curbstone, the assembled catchment curbstone includes the curbstone main part that is equipped with the hollow channel, the bottom surface of the hollow channel lies in the road surface below the horizon; the curbstone main body consists of a first structural member and a second structural member, the first structural member is arranged on the side, close to the filling, of the curbstone main body above the horizontal line of the pavement, the second structural member is arranged on the side, close to the pavement, of the curbstone main body above the horizontal line of the pavement, and the hollow channel is formed after the first structural member and the second structural member are integrally formed; the first structural member is a water permeable structural member, and moisture between the filling and the curbstone main body permeates into the hollow channel through the first structural member to be stored; wherein,
the first structural member is made of first concrete, and raw materials of the first concrete comprise the following components in parts by weight: 700 parts of aggregate (coral sand with the particle size of 2-5 mm), 400 parts of first inorganic active powder, 10 parts of first pigment and 2 parts of first water reducing agent; the water-to-glue ratio of the raw materials of the first concrete is 0.2;
the second structural member is made of a second concrete: the second concrete comprises the following raw materials in parts by weight: 550 parts of fine aggregate, 650 parts of second inorganic active powder, 600 parts of coarse aggregate, 12 parts of second water reducing agent and 1 part of second pigment; the water-cement ratio of the raw materials of the second concrete is 0.16.
Example 2
An assembled catchment road stone was the same as in example 1 except that the raw material formulations of the first concrete and the second concrete were different.
In this embodiment, the raw materials of the first concrete include the following components in parts by weight: 1100 parts of aggregate (coral sand with the particle size of 2-5 mm), 600 parts of first inorganic active powder, 30 parts of first pigment and 5 parts of first water reducing agent; the water-cement ratio of the raw materials of the first concrete is 0.26. The raw materials of the second concrete comprise the following components in parts by weight: 800 parts of fine aggregate, 950 parts of second inorganic active powder, 900 parts of coarse aggregate, 20 parts of second water reducer and 20 parts of second pigment; the water-cement ratio of the raw materials of the second concrete is 0.22.
Example 3
An assembled catchment road stone was the same as in example 1 except that the raw material formulations of the first concrete and the second concrete were different.
In this embodiment, the raw materials of the first concrete include the following components in parts by weight: 800 parts of aggregate (coral sand with the particle size of 2-5 mm), 450 parts of first inorganic active powder, 15 parts of first pigment and 3 parts of first water reducing agent; the water-cement ratio of the raw materials of the first concrete is 0.22. The raw materials of the second concrete comprise the following components in parts by weight: 610 parts of fine aggregate, 750 parts of second inorganic active powder, 700 parts of coarse aggregate, 14 parts of second water reducer and 10 parts of second pigment; the water-cement ratio of the raw materials of the second concrete is 0.18.
Example 4
An assembled catchment road stone was the same as in example 1 except that the raw material formulations of the first concrete and the second concrete were different.
In this embodiment, the raw materials of the first concrete include the following components in parts by weight: 1000 parts of aggregate (ceramsite with the particle size of 2-5 mm), 550 parts of first inorganic active powder, 25 parts of first pigment and 4 parts of first water reducing agent; the water-to-glue ratio of the raw materials of the first concrete is 0.24; the raw materials of the second concrete comprise the following components in parts by weight: 740 parts of fine aggregate, 850 parts of second inorganic active powder, 800 parts of coarse aggregate, 18 parts of second water reducer and 12 parts of second pigment; the water-to-glue ratio of the raw materials of the second concrete is 0.2.
Example 5
An assembled catchment road stone was the same as in example 1 except that the raw material formulations of the first concrete and the second concrete were different.
In this embodiment, the raw materials of the first concrete include the following components in parts by weight: 900 parts of aggregate (ceramsite with the particle size of 2-5 mm), 500 parts of first inorganic active powder, 20 parts of first pigment and 3.5 parts of first water reducing agent; the water-to-glue ratio of the raw materials of the first concrete is 0.23; the raw materials of the second concrete comprise the following components in parts by weight: 675 parts of fine aggregate, 800 parts of second inorganic active powder, 750 parts of coarse aggregate, 16 parts of second water reducing agent and 11 parts of second pigment; the water-cement ratio of the raw materials of the second concrete is 0.19.
Comparative example 1
An assembly type catchment curb stone was the same as in example 1 except that the raw material formulation aggregate of the first concrete was machine-made sand.
Comparative example 2
An assembly type water collecting curb stone was the same as example 1 except that the raw material formulation of the first concrete was 300 parts of the first inorganic active powder.
Comparative example 1
An assembly type catchment curb was the same as in example 1 except that the raw material formulation aggregate of the first concrete was 350 parts.
Test pieces are respectively cut out from the first structural member and the second structural member of the fabricated catchment road edge stone prepared in the above embodiments 1 to 5 and the comparative examples 1 to 3 for performance testing, the bending strength and the compressive strength are tested according to the standard of the test method for mechanical properties of common concrete GB/T50081-2016, the water permeability coefficient is tested according to the technical specification of pervious concrete pavement CJJ134-2009, and the test results are shown in Table 1:
TABLE 1
As seen from table 1, the aggregate of the first concrete of comparative example 1 was machine-made sand, and compared to example 1, the compressive strength and bending strength of the first concrete (i.e., pervious concrete) of comparative example 1 were increased more, but the permeability coefficient was decreased more, while the compressive strength and bending strength of the ultra-high performance concrete of the second structural member were not changed; comparative example 2 300 parts of the first concrete inorganic active powder, compared with example 1, the first concrete (i.e., pervious concrete) of comparative example 2 has much decreased compressive strength and bending strength, and much increased permeability coefficient, while the ultra-high performance concrete compressive strength and bending strength of the second structural member are unchanged; comparative example 3 the first concrete of comparative example 3, in which 350 parts of the aggregate was used, showed a greater decrease in the compressive strength, bending strength and water permeability coefficient than example 1, while the ultra-high performance concrete showed no change in the compressive strength and bending strength. Through a large number of tests, the aggregate type and the inorganic active powder selected by the invention are optimal.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An assembled catchment curbstone for use between the edge of a road surface and a fill, characterized in that the assembled catchment curbstone comprises a curbstone body provided with a hollow channel, the bottom surface of the hollow channel being located below the horizontal line of the road surface; the curbstone main body consists of a first structural member and a second structural member, the first structural member is arranged on the side, close to the filling, of the curbstone main body above the horizontal line of the pavement, the second structural member is arranged on the side, close to the pavement, of the curbstone main body above the horizontal line of the pavement, and the hollow channel is formed after the first structural member and the second structural member are integrally formed; the first structural member is a water permeable structural member, and moisture between the filling and the curbstone main body permeates into the hollow channel through the first structural member to be stored; wherein,
the first structural member is made of first concrete, and raw materials of the first concrete comprise the following components in parts by weight: 1100 parts of aggregate 700-; the water-to-glue ratio of the raw materials of the first concrete is 0.2-0.26;
the second structural member is made of a second concrete: the second concrete comprises the following raw materials in parts by weight: 800 portions of fine aggregate 550-containing materials, 950 portions of second inorganic active powder 650-containing materials, 900 portions of coarse aggregate 600-containing materials, 12-20 portions of second water reducing agent and 1-20 portions of second pigment; the water-to-glue ratio of the raw materials of the second concrete is 0.16-0.22.
2. The fabricated catchment road stone of claim 1, wherein the first inorganic active powder in the raw materials of the first concrete comprises cement with strength grade of 42.5 or more and a blended active powder material; wherein the blended active powder material comprises one or more of silica fume, mineral powder, glass micro-beads and zeolite powder; and/or the presence of a gas in the gas,
the second inorganic active powder in the raw materials of the second concrete comprises cement with the strength grade of more than or equal to 42.5 and a blended active powder material; wherein the blended active powder material comprises one or more of silica fume, mineral powder, glass micro-beads and zeolite powder.
3. The fabricated catchment road stone of claim 1, wherein the aggregate in the raw material of the first concrete comprises one or more of ceramsite and coral sand having a particle size of 2-5 mm; and/or the presence of a gas in the gas,
the fine aggregate in the raw materials of the second concrete comprises one or more of river sand, machine-made sand and quartz sand with the particle size of 0.15-4.75 mm; and/or the presence of a gas in the gas,
the coarse aggregate in the raw materials of the second concrete comprises color macadam with the grain diameter of 5-30 mm.
4. The fabricated water collecting curb stone of claim 1, wherein the compressive strength of the first structural member is equal to or more than 40MPa, and the compressive strength of the second structural member is equal to 100-150 MPa.
5. The fabricated catchment curb according to any of claims 1 to 4, wherein the width of the hollow channel is 100 to 200mm and the height of the hollow channel is 40 to 70 mm.
6. The fabricated catchment curb according to any of claims 1 to 4, wherein the thickness of the curb body at the upper and lower ends of the hollow channel is 50 to 100 mm; and/or the presence of a gas in the gas,
the thickness of the side, close to the road surface, of the curbstone main body and the thickness of the side, close to the filling soil, of the curbstone main body are both 50-80 mm.
7. The prefabricated catchment curb of any of claims 1-4, wherein the height of the first structure is 2/3-3/4 of the height of the curb body.
8. A method for preparing an assembled catchment road stone according to any of claims 1 to 7, comprising the steps of:
mixing the raw materials of the first concrete with water to obtain a first mixture; mixing the raw material of the second concrete with water to obtain a second mixture;
providing a curb stone mold, distributing the first mixture and the second mixture at corresponding positions in the curb stone mold according to the designed size, then covering an isolation moisture retention film for vacuum vibration pressing, then curing to form the first structural member and the second structural member, and obtaining a curb stone main body after demolding;
and grinding and polishing the surface of a second structural member in the curbstone main body to obtain the assembled water-collecting curbstone.
9. The method of claim 8, wherein the vacuum vibro-compression conditions comprise: the vacuumizing time is more than or equal to 60s, and the pressing time is more than or equal to 120 s; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is more than or equal to 1MPa, and the pressure is more than or equal to 5000 kN.
10. The method of claim 8, wherein the curing process conditions include: curing for 6-8 hours at 40 ℃, and then heating to 80-90 ℃ for curing for 12-16 hours; and/or the presence of a gas in the gas,
the humidity of the curing treatment is more than or equal to 75 percent.
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