CN214383874U - Artificial stone surface composite sidewalk board - Google Patents
Artificial stone surface composite sidewalk board Download PDFInfo
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- CN214383874U CN214383874U CN202022840233.6U CN202022840233U CN214383874U CN 214383874 U CN214383874 U CN 214383874U CN 202022840233 U CN202022840233 U CN 202022840233U CN 214383874 U CN214383874 U CN 214383874U
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Abstract
The utility model discloses a compound pavement slab of artificial stone face, the layer is toughened to artificial stone surface course and basement including range upon range of laminating, the artificial stone surface course is inorganic artificial stone board, the basement is toughened the layer and is pour the shaping in the super high tenacity concrete slab on inorganic artificial stone board surface, be equipped with the hole for hoist that link up artificial stone surface course and basement and toughen the layer on the compound pavement slab of artificial stone face. The utility model discloses technical scheme pours behind the vacuum suppression rostone surface course that the basement increases tough layer preparation artificial stone face composite pavement slab decorative effect is good, mechanical properties is good, combine firmly between the layer, the ductility good can not produce brittle failure in the twinkling of an eye, the resistant waterproof performance in surface is good, wear resistance is good, durability is good, material source is extensive, is fit for using widely.
Description
Technical Field
The utility model relates to a pavement slab technical field, more specifically relates to a compound pavement slab of artificial stone face.
Background
At present, the pavement slabs are generally divided into metal pavement slabs and non-metal pavement slabs, wherein the metal pavement slabs have the defects of high manufacturing cost, easy corrosion, poor anti-theft performance and the like, the non-metal pavement slabs are mainly concrete pavement slabs, a single concrete layer does not have the functions of ornamental value and urban image beautification, and the appearance of the formed concrete pavement slabs is changed by coating a color layer on the surfaces of the formed concrete pavement slabs in the existing methods. However, since the concrete pavement slab is applied outdoors, it is easily damaged in a long-term outdoor environment, resulting in fading of its surface and exposure of the original color inside, making it look more unattractive and not conducive to the beautification of road environments. And the concrete sidewalk slab has the defects of heavy structure, low bearing capacity, poor impact resistance and fatigue resistance, short service life and the like.
With the enhancement of ecological environment protection of the country, the exploitation of natural stone mines is strictly controlled. On the other hand, the infrastructure of China, such as airports, subway stations and high-speed rail stations, commercial squares and convention centers continue, a great deal of infrastructure also has great demand on the panel materials of artificial stone, and the artificial stone replacing natural stone has wide market prospect.
The traditional artificial stone mainly comprises resin organic artificial stone and a small amount of inorganic artificial stone. The artificial resin stone mainly has the defects of large thermal deformation, easy bulging deformation and cracking, aging deformation, color change, strength reduction under the influence of ultraviolet radiation and temperature, odorous gas in combustion, nondegradable property, short service life and the like, and is gradually limited by environmental protection; the novel inorganic artificial stone panel has the characteristics of high compressive strength, pollution resistance, good decorative effect, long service life, aging resistance and the like, and is of a brittle structure, and is bending-resistant and easy to break.
If adopt single traditional rostone preparation guidance tape, because rostone itself fragile structure, the easy rupture, the security is not high. Therefore, the artificial stone decorative surface plate is adhered to the surface of the concrete sidewalk plate through cement mortar, the decorative effect of the concrete sidewalk plate is improved, but the decorative plate is easily bonded with the concrete sidewalk plate, and hollowing and falling occur, so that the overall attractiveness of the sidewalk plate is affected.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an artificial stone composite sidewalk slab with both ornamental and high bearing capacity by combining an inorganic artificial stone slab with ultra-high toughness concrete to overcome at least one of the disadvantages of the prior art.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a compound pavement slab of artificial stone face, the layer of toughening including the artificial stone surface course and the basement of range upon range of laminating, the artificial stone surface course is inorganic artificial stone board, the basement is toughened the layer and is poured the super high tenacity concrete slab of shaping in inorganic artificial stone board surface, be equipped with the hole for hoist that link up artificial stone surface course and basement toughening layer on the compound pavement slab of artificial stone face.
The ultra-high-toughness concrete is a novel ultra-high-strength concrete which is successfully researched by French Buerger (Bouygues) company at the end of the twentieth century after high-strength and high-performance concrete and consists of fine quartz sand (without coarse aggregate), cement, quartz powder, silicon powder, a high-efficiency water reducing agent, fibers and the like, has ultra-high strength, low brittleness and excellent durability and has a wide application prospect. The utility model discloses an inorganic artificial stone board combines preparation composite bed pavement slab with super high tenacity concrete mutually, makes it have bear the weight of characteristics such as the dynamic height, imitative stone decorative effect is good, the resistant water proofness of pollution in surface is good, durability is good, wear resistance is good, this product has wide market perspective.
The sidewalk plate is provided with hoisting holes which penetrate through the artificial stone surface layer and the substrate toughening layer, so that the artificial stone surface layer and the substrate toughening layer are convenient to construct and hoist. The hoisting hole is formed by a PVC square pipe which is pre-embedded before manufacturing, or is formed by an artificial stone surface composite sidewalk board opening after maintenance. The hoisting holes can be formed on the artificial stone surface composite sidewalk board after maintenance and molding, but internal diseases such as cracks and the like can be left on the sidewalk board by the hole opening process. Compared with the prior art, the PVC square pipe is embedded in the place where the hoisting hole needs to be formed before the sidewalk plate is manufactured, the harm possibly caused by the hole opening can be solved, the PVC square pipe can be kept in the sidewalk plate, the hoisting hole and the surrounding stone slabs and concrete are protected, and the service life of the sidewalk plate is prolonged.
The base toughening layer is a poured and formed ultrahigh-performance concrete slab and is directly formed on the surface of the inorganic artificial stone slab, so that the combination between the base toughening layer and the artificial stone surface layer is firmer. For further improve and combine the fastness between layer and layer, the rostone surface layer is equipped with first recess and/or first arch towards the one side on basement toughening layer, basement toughening layer is equipped with first recess and/or first protruding complex second arch and/or second recess towards the one side of rostone surface layer, through recess and bellied gomphosis each other for the people's path board ductility after the shaping is better, avoids producing brittle failure in the twinkling of an eye.
The artificial stone surface layer is provided with a pattern on one side opposite to the substrate toughening layer, and the pattern is mainly used as a product mark so as to distinguish similar products; other decorative patterns and texts can also be used. The pattern is carved on the artificial stone surface layer or on an aluminum plate/stainless steel plate connected with the artificial stone surface layer; for the latter, aluminum plate/stainless steel plate can be pre-buried in the mould of shaping rostone surface course before the preparation of guidance tape, also can be through modes such as pasting fixed connection on rostone surface course after the guidance tape preparation is accomplished.
The thickness of the artificial stone surface layer is 5-15mm, the compressive strength is greater than 130 MPa, and the bending strength is greater than 16 MPa; a steel bar framework is arranged in the substrate toughening layer, and the compressive strength and the bending strength of the steel bar framework are greater than 100 MPa and greater than 16 MPa; the prepared sidewalk board has higher mechanical property.
The artificial stone surface layer can be prepared from the following raw materials in parts by weight:
400-650 parts of Portland cement with the strength not lower than 42.5 MPa;
320-460 parts of admixture with the average particle size of 5-30 mu m;
1100-1500 parts of fine aggregate with the particle size of less than 4.75 mm;
2-10 parts of inorganic pigment;
10-18 parts of a high-performance additive;
the water-to-glue ratio is 0.16-0.2.
Preferably, the artificial stone surface layer comprises the following raw materials in parts by weight:
460-590 parts of Portland cement with the strength not lower than 42.5 MPa;
355-425 parts of admixture with the average particle size of 5-30 mu m;
1200-1400 parts of fine aggregate with the particle size of less than 4.75 mm;
4-8 parts of an inorganic pigment;
12-16 parts of a high-performance additive;
the water-to-glue ratio is 0.17-0.19.
More preferably, the artificial stone surface layer comprises the following raw materials in parts by weight:
525 parts of Portland cement with the strength of not less than 42.5 MPa;
390 parts of admixture with the average grain diameter of 5-30 mu m;
1300 parts of fine aggregate with the particle size of less than 4.75 mm;
6 parts of an inorganic pigment;
14 parts of a high-performance additive;
the water-to-glue ratio is 0.18.
The substrate toughening layer can adopt the following raw materials in parts by weight:
400-600 parts of Portland cement with the strength of not less than 42.5 MPa;
300 portions and 420 portions of admixture with the average grain diameter of 5-30 mu m;
800-1200 parts of fine aggregate with the particle size of less than 4.75 mm;
70-200 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
15-22 parts of a high-performance additive;
the water-to-glue ratio is 0.16-0.2.
Preferably, the base toughening layer comprises the following raw materials in parts by weight:
450 portions and 550 portions of Portland cement with the strength not lower than 42.5 MPa;
330 portions of admixture with 5-30 μm average particle size and 390 portions of admixture;
900 portions of fine aggregate with the grain diameter less than 4.75mm and 1100 portions;
100 portions and 170 portions of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
17-20 parts of a high-performance additive;
the water-to-glue ratio is 0.17-0.19.
More preferably, the base toughening layer comprises the following raw materials in parts by weight:
500 portions of Portland cement with the strength not lower than 42.5 MPa;
360 parts of admixture with the average particle size of 5-30 mu m;
1000 parts of fine aggregate with the particle size of less than 4.75 mm;
135 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
18.5 parts of a high-performance additive;
the water-to-glue ratio is 0.18.
The artificial stone surface composite sidewalk plate can be manufactured by the following method, and comprises the following steps:
s1, respectively stirring and uniformly mixing raw materials for an artificial stone surface layer and a substrate toughening layer according to a proportion to obtain a mixture of each layer for later use;
s2, preparing a mold, calculating and weighing the mixture for the artificial stone surface layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mold, covering an isolation moisture-preserving film on the mixture, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s3, withdrawing the artificial stone surface layer pressed in the step S2 from the vacuum press, removing the isolation and moisture preservation film covered on the surface, manufacturing a first groove and/or a first bulge on the surface, fixing a frame around the die, wherein the inner length and width of the frame are consistent with those of the surface layer, and fixing the steel bar framework in the die;
s4, calculating and weighing the mixture for the substrate toughening layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould with the steel reinforcement framework fixed in the step S3, and then putting the mould into a vacuum box for vacuumizing and exhausting;
s5, curing the composite layer pavement slab prepared in the step S4 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank composite layer pavement slab;
s6, scraping the bottom, fixing the thickness and polishing the surface layer of the blank composite layer sidewalk board obtained in the step S5 to obtain the artificial stone surface composite sidewalk board.
The following is a preferred scheme of the preparation method:
in the step S1, the stirring and mixing time of the raw materials for the artificial stone surface layer is not less than 10 minutes, the vistony consistency is 5S-30S, and the initial setting time after stirring and mixing is not less than 60 minutes; the stirring and mixing time of the raw materials for the substrate toughening layer is not less than 10 minutes respectively, and the expansion degree is 500-750 mm.
In step S2, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN.
In step S4, the vacuumizing time is not less than 15S, and the vacuum pressure is-0.07-0.1 MPa.
In step S5, the high temperature curing process maintains the humidity above 75%.
In step S2, placing a PVC square pipe in the prepared mould; or in step S6, the method further includes drilling a hole for the blank composite layer sidewalk board by using a drilling machine.
In step S2, an aluminum plate/stainless steel plate for forming a product logo pattern is placed in the prepared mold; or in step S6, the method further comprises engraving a product identification pattern on the artificial stone surface layer.
Compared with the prior art, the utility model has following beneficial effect: the compound pavement slab of artificial stone face have bear the weight of high, imitative stone decorative effect good, resistant pollution performance good, durability good, wear resistance good, advantage such as economical and reasonable, the low shrink of stable in volume, do not have ageing scheduling problem, combine firmly between layer and layer, structural safety degree is high, the ductility is good can not produce brittle failure in the twinkling of an eye, can do the bearing capacity structure, the material source is extensive, whole comprehensive cost is low, is fit for using widely.
Drawings
Fig. 1 is a cross-sectional view of an artificial stone-faced composite pavement slab.
Description of reference numerals: the artificial stone comprises an artificial stone surface layer 100, a substrate toughening layer 200 and a hoisting hole 300.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention. The present invention will be described in further detail with reference to specific embodiments.
The ultra-high-toughness concrete is a novel ultra-high-strength concrete which is successfully researched by French Buerger (Bouygues) company at the end of the twentieth century after high-strength and high-performance concrete and consists of fine quartz sand (without coarse aggregate), cement, quartz powder, silicon powder, a high-efficiency water reducing agent, fibers and the like, has ultra-high strength, low brittleness and excellent durability and has a wide application prospect. The utility model discloses an inorganic artificial stone board combines preparation composite bed pavement slab with super high tenacity concrete mutually, makes it have bear the weight of characteristics such as the dynamic height, imitative stone decorative effect is good, the resistant water proofness of pollution in surface is good, durability is good, wear resistance is good, this product has wide market perspective. As shown in fig. 1, this artificial stone surface composite sidewalk board includes the artificial stone surface layer 100 and the base toughening layer 200 of range upon range of laminating, the artificial stone surface layer 100 is inorganic artificial stone board, the base toughening layer 200 is for pouring the ultrahigh toughness concrete slab of shaping in inorganic artificial stone board surface, be equipped with the hole for hoist 300 who link up artificial stone surface layer 100 and base toughening layer 200 on the artificial stone surface composite sidewalk board.
The sidewalk plate is provided with hoisting holes 300 which penetrate through the artificial stone surface layer 100 and the substrate toughening layer 200, so that the artificial stone surface layer is convenient to construct and hoist and is specifically arranged at two ends of the sidewalk plate. The lifting hole 300 is formed by a PVC square pipe pre-buried before manufacturing, or is formed by an artificial stone surface composite sidewalk plate opening after maintenance. The hoisting holes 300 may be formed on the artificial stone composite sidewalk board after maintenance and molding, but the hole forming process may leave cracks and other internal diseases on the sidewalk board. Compared with the prior art, the PVC square pipe is embedded in the place where the hoisting hole 300 needs to be arranged before the sidewalk plate is manufactured, so that the harm caused by the opening can be avoided, the PVC square pipe can be kept in the sidewalk plate, the hoisting hole 300 and the surrounding stone slabs and concrete form a protective effect, and the service life of the sidewalk plate is prolonged.
The base toughening layer 200 is a cast ultrahigh-performance concrete slab and is directly formed on the surface of the inorganic artificial stone slab, so that the combination between the base toughening layer 200 and the artificial stone surface layer 100 is firmer. For further improving bonding fastness between layer and layer, rostone surface course 100 is equipped with first recess and/or first arch towards the one side of basement toughening layer 200, basement toughening layer 200 is equipped with protruding and/or the second recess of second with first recess and/or first protruding complex towards the one side of rostone surface course 100, through recess and the mutual gomphosis of bellied for the people's path board ductility after the shaping is better, avoids producing brittle failure in the twinkling of an eye.
The artificial stone surface layer 100 is provided with a pattern on the surface back to the substrate toughening layer 200, and the pattern is mainly used as a product mark so as to distinguish similar products; other decorative patterns and texts can also be used. The pattern is carved on the artificial stone surface layer 100 or on an aluminum plate/stainless steel plate connected to the artificial stone surface layer 100; for the latter, the aluminum plate/stainless steel plate may be pre-embedded in the mold for molding the artificial stone surface layer 100 before the sidewalk plate is manufactured, or may be fixedly connected to the artificial stone surface layer 100 by means of adhesion or the like after the sidewalk plate is manufactured.
The thickness h of the artificial stone surface layer 100 is 5-15mm, the compressive strength is greater than 130 MPa, and the bending strength is greater than 16 MPa; a steel bar framework is arranged in the substrate toughening layer 200, and the compressive strength and the bending strength of the steel bar framework are greater than 100 MPa and greater than 16 MPa; the prepared sidewalk board has higher mechanical property.
Example 1
The artificial stone surface composite sidewalk plate with the structure comprises the following raw materials in parts by weight:
400 portions of Portland cement with the strength not lower than 42.5 MPa;
320 parts of admixture with the average particle size of 5-30 mu m;
1100 parts of fine aggregate with the particle size of less than 4.75 mm;
2 parts of inorganic pigment;
10 parts of high-performance additive;
the water-to-glue ratio is 0.16.
The substrate toughening layer comprises the following raw materials in parts by weight:
400 portions of Portland cement with the strength not lower than 42.5 MPa;
300 parts of admixture with the average particle size of 5-30 mu m;
800 parts of fine aggregate with the particle size of less than 4.75 mm;
70 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
15 parts of high-performance additive;
the water-to-glue ratio is 0.16.
The manufacturing method of the artificial stone surface composite sidewalk plate comprises the following steps:
s1, respectively stirring and uniformly mixing raw materials for an artificial stone surface layer and a substrate toughening layer according to a proportion to obtain a mixture of each layer for later use;
s2, preparing a mould, placing a PVC square pipe in the mould, calculating and weighing the mixture for the artificial stone surface layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould, covering an isolation moisture-preserving film on the mixture, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s3, withdrawing the artificial stone surface layer pressed in the step S2 from the vacuum press, removing the isolation and moisture preservation film covered on the surface, manufacturing a first groove and/or a first bulge on the surface, fixing a frame around the die, wherein the inner length and width of the frame are consistent with those of the surface layer, and fixing the steel bar framework in the die;
s4, calculating and weighing the mixture for the substrate toughening layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould with the steel reinforcement framework fixed in the step S3, and then putting the mould into a vacuum box for vacuumizing and exhausting;
s5, curing the composite layer pavement slab prepared in the step S4 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank composite layer pavement slab;
s6, scraping the bottom, fixing the thickness and polishing the surface layer of the blank composite layer sidewalk board obtained in the step S5, and engraving a product identification pattern on the artificial stone surface layer to obtain the artificial stone surface composite sidewalk board.
In the step S1, the stirring and mixing time of the raw materials for the artificial stone surface layer is not less than 10 minutes, the vistony consistency is 5S-30S, and the initial setting time after stirring and mixing is not less than 60 minutes; the stirring and mixing time of the raw materials for the substrate toughening layer is not less than 10 minutes respectively, and the expansion degree is 500-750 mm. In step S2, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN. In step S4, the vacuumizing time is not less than 15S, and the vacuum pressure is-0.07-0.1 MPa. In step S5, the high temperature curing process maintains the humidity above 75%.
Example 2
Different from the embodiment 1, the artificial stone surface layer comprises the following raw materials in parts by weight:
650 parts of Portland cement with the strength of not less than 42.5 MPa;
460 parts of admixture with the average particle size of 5-30 mu m;
1500 parts of fine aggregate with the particle size of less than 4.75 mm;
10 parts of inorganic pigment;
18 parts of high-performance additive;
the water-to-glue ratio is 0.2.
The substrate toughening layer comprises the following raw materials in parts by weight:
600 parts of Portland cement with the strength of not less than 42.5 MPa;
420 parts of admixture with the average particle size of 5-30 mu m;
1200 parts of fine aggregate with the particle size of less than 4.75 mm;
200 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
22 parts of high-performance additive;
the water-to-glue ratio is 0.2.
The rest is the same as example 1.
Example 3
Different from the embodiment 1, the artificial stone surface layer comprises the following raw materials in parts by weight:
460 parts of Portland cement with the strength not lower than 42.5 MPa;
355 parts of admixture with the average particle size of 5-30 mu m;
1200 parts of fine aggregate with the particle size of less than 4.75 mm;
4 parts of an inorganic pigment;
12 parts of a high-performance additive;
the water-to-glue ratio is 0.17.
The substrate toughening layer comprises the following raw materials in parts by weight:
450 portions of Portland cement with the strength not lower than 42.5 MPa;
330 parts of admixture with the average particle size of 5-30 mu m;
900 parts of fine aggregate with the particle size of less than 4.75 mm;
100 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
17 parts of a high-performance additive;
the water-to-glue ratio is 0.17.
The rest is the same as example 1.
Example 4
Different from the embodiment 1, the artificial stone surface layer comprises the following raw materials in parts by weight:
590 portions of Portland cement with the strength not lower than 42.5 MPa;
425 parts of admixture with the average grain diameter of 5-30 mu m;
1400 parts of fine aggregate with the particle size of less than 4.75 mm;
8 parts of an inorganic pigment;
16 parts of a high-performance additive;
the water-to-glue ratio is 0.19.
The substrate toughening layer comprises the following raw materials in parts by weight:
550 parts of Portland cement with the strength not lower than 42.5 MPa;
390 parts of admixture with the average particle size of 5-30 mu m;
1100 parts of fine aggregate with the particle size of less than 4.75 mm;
170 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
20 parts of high-performance additive;
the water-to-glue ratio is 0.19.
The rest is the same as example 1.
Example 5
Different from the embodiment 1, the artificial stone surface layer comprises the following raw materials in parts by weight:
525 parts of Portland cement with the strength of not less than 42.5 MPa;
390 parts of admixture with the average grain diameter of 5-30 mu m;
1300 parts of fine aggregate with the particle size of less than 4.75 mm;
6 parts of an inorganic pigment;
14 parts of a high-performance additive;
the water-to-glue ratio is 0.18.
The substrate toughening layer comprises the following raw materials in parts by weight:
500 portions of Portland cement with the strength not lower than 42.5 MPa;
360 parts of admixture with the average particle size of 5-30 mu m;
1000 parts of fine aggregate with the particle size of less than 4.75 mm;
135 parts of steel fiber with the diameter of 0.1-0.25mm and the length of 10-20 mm;
18.5 parts of a high-performance additive;
the water-to-glue ratio is 0.18.
The rest is the same as example 1.
Example 6
Different from the embodiment 1, the manufacturing method of the artificial stone surface composite sidewalk plate comprises the following steps:
s1, respectively stirring and uniformly mixing raw materials for an artificial stone surface layer and a substrate toughening layer according to a proportion to obtain a mixture of each layer for later use;
s2, preparing a mould, placing a PVC square pipe in the mould, calculating and weighing the mixture for the artificial stone surface layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould, covering an isolation moisture-preserving film on the mixture, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s3, withdrawing the artificial stone surface layer pressed in the step S2 from the vacuum press, removing the isolation and moisture preservation film covered on the surface, manufacturing a first groove and/or a first bulge on the surface, fixing a frame around the die, wherein the inner length and width of the frame are consistent with those of the surface layer, and fixing the steel bar framework in the die;
s4, calculating and weighing the mixture for the substrate toughening layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould with the steel reinforcement framework fixed in the step S3, and then putting the mould into a vacuum box for vacuumizing and exhausting;
s5, curing the composite layer pavement slab prepared in the step S4 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank composite layer pavement slab;
s6, scraping the bottom, fixing the thickness and polishing the surface layer of the blank composite layer sidewalk board obtained in the step S5, and fixing an aluminum plate/stainless steel plate of the product identification pattern on the surface layer to obtain the artificial stone surface composite sidewalk board.
In the step S1, the stirring and mixing time of the raw materials for the artificial stone surface layer is not less than 10 minutes, the vistony consistency is 5S-30S, and the initial setting time after stirring and mixing is not less than 60 minutes; the stirring and mixing time of the raw materials for the substrate toughening layer is not less than 10 minutes respectively, and the expansion degree is 500-750 mm. In step S2, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN. In step S4, the vacuumizing time is not less than 15S, and the vacuum pressure is-0.07-0.1 MPa. In step S5, the high temperature curing process maintains the humidity above 75%.
The rest is the same as example 1.
Example 7
Different from the embodiment 1, the manufacturing method of the artificial stone surface composite sidewalk plate comprises the following steps:
s1, respectively stirring and uniformly mixing raw materials for an artificial stone surface layer and a substrate toughening layer according to a proportion to obtain a mixture of each layer for later use;
s2, preparing a mold, calculating and weighing the mixture for the artificial stone surface layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mold, covering an isolation moisture-preserving film on the mixture, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s3, withdrawing the artificial stone surface layer pressed in the step S2 from the vacuum press, removing the isolation and moisture preservation film covered on the surface, manufacturing a first groove and/or a first bulge on the surface, fixing a frame around the die, wherein the inner length and width of the frame are consistent with those of the surface layer, and fixing the steel bar framework in the die;
s4, calculating and weighing the mixture for the substrate toughening layer prepared in the step S1 according to the thickness, uniformly distributing the mixture in the mould with the steel reinforcement framework fixed in the step S3, and then putting the mould into a vacuum box for vacuumizing and exhausting;
s5, curing the composite layer pavement slab prepared in the step S4 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank composite layer pavement slab;
s6, scraping the bottom, fixing the thickness, polishing the surface layer, forming a hoisting hole in the blank composite layer sidewalk board obtained in the step S5, and engraving a product identification pattern on the artificial stone surface layer to obtain the artificial stone surface composite sidewalk board.
In the step S1, the stirring and mixing time of the raw materials for the artificial stone surface layer is not less than 10 minutes, the vistony consistency is 5S-30S, and the initial setting time after stirring and mixing is not less than 60 minutes; the stirring and mixing time of the raw materials for the substrate toughening layer is not less than 10 minutes respectively, and the expansion degree is 500-750 mm. In step S2, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN. In step S4, the vacuumizing time is not less than 15S, and the vacuum pressure is-0.07-0.1 MPa. In step S5, the high temperature curing process maintains the humidity above 75%.
The rest is the same as example 1.
Comparative example 1
Unlike example 1, this comparative example is an ultra high performance concrete pavement slab, without an artificial stone facing, otherwise the same as example 1.
The ultra-high performance concrete pavement slab is prepared by ultra-high toughness concrete with the compressive strength of more than 100 MPa and the bending strength of more than 16 MPa, a product Logo is arranged on the pavement slab surface layer, and the Logo is formed by a Logo at the bottom of a mould; the two ends of the sidewalk plate comprise through hoisting holes, and the hoisting holes are formed by pre-embedded PVC square pipes before manufacturing.
The manufacturing steps of the ultra-high performance concrete pavement slab are as follows:
s1, respectively stirring the raw materials of the ultra-high toughness concrete according to a proportion for not less than 10 minutes, wherein the expansion degree is 500-750mm, and uniformly mixing to obtain a mixture for later use;
s2, preparing a sidewalk plate mold, pouring the mixture prepared in the step S1 into the mold after fixing the PVC square tube and the steel reinforcement framework, placing the mold and a vibrating table for vibration molding, and finishing the surface;
s3, covering the surface of the sidewalk board prepared in the step S2 with an isolation and moisture preservation film, and curing the sidewalk board at 40 ℃ for 6-8 hours and demolding;
and S4, heating the sidewalk slab demoulded in the step S3 to 80-90 ℃, and curing for 12-16 hours to obtain the ultra-high performance concrete sidewalk slab.
The bearing capacity of the pavement slabs prepared in examples 1 to 7 and comparative example 1 was tested, and the test results are shown in the following table.
From the above table, comparative example 1 does not use an inorganic artificial stone slab having a compressive strength of more than 130 mpa and a flexural strength of more than 16 mpa as a surface layer, and compared with example 1, the crack width is slightly increased when a crack testing load (112Kn) is applied; when the load is loaded to a bearing capacity test load (224Kn), the sidewalk boards are not damaged, and the width of the crack is slightly increased; the abrasion resistance is reduced more. Through a large number of tests, the artificial stone surface and the ultra-high toughness concrete are combined, the interface bonding performance of the composite layer is good, the interface bonding part is well bonded in the pressing process, and the artificial stone surface is not separated, so that the bearing capacity of the sidewalk plate is improved; meanwhile, the artificial stone surface can improve the wear resistance and the decorative performance of the pavement slab.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a compound pavement slab of artificial stone face, its characterized in that, the layer is toughened to artificial stone surface course and basement including range upon range of laminating, the artificial stone surface course is inorganic artificial stone slab, the basement is toughened the layer and is pour the shaping in the super high tenacity concrete slab on inorganic artificial stone board surface, be equipped with the hole for hoist that link up artificial stone surface course and basement toughening layer on the compound pavement slab of artificial stone face.
2. The artificial stone surface composite sidewalk board of claim 1, wherein the hoisting holes are formed by pre-buried PVC square pipes before manufacturing, or formed by open holes of the artificial stone surface composite sidewalk board after maintenance.
3. The artificial stone surface composite sidewalk board according to claim 1 or 2, wherein one surface of the artificial stone surface layer facing the substrate toughening layer is provided with a first groove and/or a first protrusion, and one surface of the substrate toughening layer facing the artificial stone surface layer is provided with a second protrusion and/or a second groove matched with the first groove and/or the first protrusion.
4. The artificial stone-faced composite pavement slab according to claim 1 or 2, wherein a face of the artificial stone facing layer opposite to the base toughening layer is provided with a pattern.
5. The artificial stone surface composite pavement slab of claim 4, wherein the pattern engraving is formed on an artificial stone surface layer or on an aluminum plate/stainless steel plate connected to the artificial stone surface layer.
6. The artificial stone-faced composite pavement slab of claim 5, wherein the pattern is a product logo.
7. The artificial stone-faced composite pavement slab of claim 1 or 2, wherein the thickness of the artificial stone facing is 5-15 mm.
8. The artificial stone surface composite pavement slab as claimed in claim 1 or 2, wherein the artificial stone surface layer has a compressive strength of more than 130 mpa and a bending strength of more than 16 mpa.
9. The artificial stone-faced composite pavement slab of claim 1 or 2, wherein the base toughening layer has a compressive strength of greater than 100 mpa and a flexural strength of greater than 16 mpa.
10. The artificial stone-faced composite pavement slab of claim 1 or 2, wherein a steel reinforcement cage is disposed in the base toughening layer.
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| CN202022840233.6U CN214383874U (en) | 2020-11-30 | 2020-11-30 | Artificial stone surface composite sidewalk board |
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| CN202022840233.6U CN214383874U (en) | 2020-11-30 | 2020-11-30 | Artificial stone surface composite sidewalk board |
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