Composite concrete and preparation process thereof

Abstract

The present invention discloses a composite concrete and a preparation process thereof, and relates to the technical field of concrete, in order to solve the problem that the existing composite concrete pavement needs to be isolated and closed for a period of time before it can be opened for normal use after paving, and the construction period is long, which leads to congestion in other sections of the road. It includes a rammed earth layer, a crushed stone cushion layer is arranged on the upper end of the rammed earth layer, a concrete base layer is arranged on the upper end of the crushed stone cushion layer, a concrete surface layer is arranged on the upper end of the concrete base layer, and a cement smoothing layer is arranged on the upper end of the concrete surface layer; it also includes: a top support frame plate, which is installed at a position above the cement smoothing layer, and a ventilation extension tube is arranged on the upper end of the top support frame plate, the ventilation extension tube and the top support frame plate are integrally formed, and a reference rod is arranged on the lower end of the top support frame plate, and the reference rod and the top support frame plate are integrally formed; an epoxy resin layer is cast on the upper surface of the top support frame plate.

Description

Technical Field

[0001] The invention relates to the technical field of concrete, in particular to a composite concrete and a preparation process thereof. Background Art

[0002] Composite concrete pavement is a type of road and a classification of pavement types in transportation engineering. Composite concrete pavement refers to a road slab that uses two layers of concrete made of different concrete materials.

[0003] For example, the announcement number is: CN216712605U (named as a composite asphalt concrete pavement structure), which includes an asphalt main body, a mixing device is provided on the surface of the asphalt main body, the mixing device includes a mixing layer, the mixing layer is laid on the upper surface of the asphalt main body, a fine stone layer is laid on the bottom end of the asphalt main body, a stone layer is laid on the end of the fine stone layer away from the asphalt main body, a rammed earth layer is laid on the bottom end of the stone layer, the mixing layer is a fine asphalt concrete permeable layer, a ceramic particle layer is laid on the upper surface of the mixing layer, and a waterproof roll is laid on the end where the mixing layer and the asphalt main body are close to each other The waterproof coiled material is a modified plastic coiled material, a storage groove is provided inside the fine stone layer, the fine stone layer is a small stone layer, the stone layer is a crushed stone layer, the storage groove can accommodate other devices to a certain extent, a water-permeable pipe is fixedly installed inside the mixed layer, a plurality of hydrophobic holes are provided on the surface of the water-permeable pipe, a reinforcement device is provided on the inner wall of the storage groove, the reinforcement device includes a main board and two connecting plates, the main board is located on the inner wall of the storage groove, the connecting plate is located on the inner wall of the storage groove, two main connecting strips are fixedly connected to the side wall of the connecting plate near the main board, and the main connecting strips are inserted into the inner wall of the main board.

[0004] After the paving of the above-mentioned composite concrete pavement is completed, it needs to be isolated and closed for a period of time before it can be opened for normal use. The construction period is long, which leads to congestion in other sections of the road. For this reason, we provide a composite concrete and its preparation process. Summary of the invention

[0005] The purpose of the present invention is to provide a composite concrete and its preparation process to solve the problem that the existing composite concrete pavement proposed in the above background technology needs to be isolated and closed for a period of time after paving before it can be opened for normal use, the construction period is long, and other road sections are congested.

[0006] To achieve the above object, the present invention provides the following technical solution: a composite concrete, comprising a plain soil rammed layer, a crushed stone cushion layer is arranged on the upper end of the plain soil rammed layer, a concrete base layer is arranged on the upper end of the crushed stone cushion layer, a concrete surface layer is arranged on the upper end of the concrete base layer, and a cement smoothing layer is arranged on the upper end of the concrete surface layer;

[0007] Also includes:

[0008] A top support frame plate is installed above the cement screed layer, and a ventilation extension tube is provided at the upper end of the top support frame plate, and the ventilation extension tube is integrally formed with the top support frame plate, and a reference rod is provided at the lower end of the top support frame plate, and the reference rod is integrally formed with the top support frame plate;

[0009] An epoxy resin layer is cast on the upper surface of the top support frame plate, and the thickness of the epoxy resin layer is equal to the height of the ventilation extension tube;

[0010] A hollow inner cavity is arranged inside the top support frame plate, the hollow inner cavity and the top support frame plate are integrally formed, and an electric heating wire is arranged inside the hollow inner cavity;

[0011] The edge partition is arranged at the edge position of the top support frame plate. The edge partition and the top support frame plate are integrally formed. A mounting bend seat is arranged on the outer wall of the edge partition. The mounting bend seat and the edge partition are integrally formed.

[0012] Preferably, a stainless steel round frame is installed inside the ventilation extension tube, and internal fixing screws are installed at the connection position between the stainless steel round frame and the ventilation extension tube, and the stainless steel round frame is fixedly installed with the ventilation extension tube by the internal fixing screws.

[0013] Preferably, an isolation net is arranged inside the stainless steel round frame, and the isolation net and the stainless steel round frame are integrally formed.

[0014] Preferably, a grounding hole is provided inside the erection bend seat, the grounding hole and the erection bend seat are integrally formed, a grounding bolt is installed inside the grounding hole, and the erection bend seat is fixedly connected to the curb via the grounding bolt.

[0015] Preferably, the height of the ventilation extension tube is equal to the height of the edge partition, and the thickness of the concrete base layer is greater than the thickness of the concrete surface layer.

[0016] Preferably, the preparation process of the composite concrete comprises the following steps:

[0017] Step 1: First, at the construction site of the road surface, the paving construction is carried out in the order of soil ramming layer, gravel cushion layer, concrete base layer, concrete surface layer and cement smoothing layer from bottom to top;

[0018] Step 2: A top support frame plate is installed above the cement trowel layer. The distance between the top support frame plate and the cement trowel layer is determined by a reference rod. The length of the reference rod is equal to the distance between the top support frame plate and the cement trowel layer.

[0019] Step 3: Based on the installation height of the top support frame plate, cast a cement curb below the location where the bent seat is erected. The cement curb is provided with reserved installation holes. The grounding bolts are installed through the corresponding grounding holes and reserved connection holes for erection and fixing;

[0020] Step 4: Pour the epoxy resin material onto the upper end of the top support frame plate, and add a curing agent to the epoxy resin material to assist in curing. The pouring height of the epoxy resin layer is flush with the ventilation extension tube. After pouring, the epoxy resin layer is leveled, and the electric heating wire is connected to an external power supply to generate heat through the electric heating wire to conduct heat to the epoxy resin layer, thereby assisting the rapid curing of the epoxy resin layer.

[0021] Step 5: After the epoxy resin layer is cured, the closed area of ​​the road construction is removed, allowing pedestrians and cyclists to walk directly on the composite concrete pavement. During this period, the ventilation extension cylinder assists the ventilation of the concrete base layer, concrete surface layer and cement leveling layer. The cement contains calcium hydroxide, which reacts with carbon dioxide in the air to form hard calcium carbonate, hardening the concrete pavement;

[0022] Step 6: After the concrete pavement is completely hardened, remove the grounding bolts first so that the top support frame plate can be removed from above the cement leveling layer;

[0023] Step 7: Mix white vinegar and alcohol in a 1:1 ratio, and pour them in liquid form onto the surface of the epoxy resin layer to react with the epoxy resin layer to soften it. Then scrape the epoxy resin layer off the top support frame plate.

[0024] Preferably, the ratio of the concrete base layer is cement: sand: stone: water = 1: 1.08: 2.41: 0.40, and the ratio of the concrete surface layer is cement: sand: stone: water = 1: 1.40: 2.85: 0.47.

[0025] Preferably, the external power supply of the heating wire is a 220V AC mains power supply.

[0026] Preferably, the cured hardness of the epoxy resin layer is 90D Shore hardness.

[0027] Preferably, the top support frame plate, ventilation extension tube, edge partition, reference rod and mounting bend seat are all made of stainless steel.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention pours epoxy resin material onto the upper end of the top support frame plate. After the epoxy resin layer is cured, the closed location of the road construction is released, allowing pedestrians and cyclists to walk and ride directly on the composite concrete pavement. During this period, the ventilation extension cylinder assists the ventilation of the concrete base layer, the concrete surface layer and the cement smoothing layer. The cement contains calcium hydroxide, which reacts with carbon dioxide in the air to form hard calcium carbonate, hardening the concrete pavement, so as to achieve the purpose of directly opening the road to traffic after the concrete construction is completed. While not affecting the curing of the concrete, the construction period is shortened, and the problem of the existing composite concrete pavement that the road needs to be isolated and closed for a period of time before it can be opened for normal use after paving is completed, the construction period is long, and other road sections are congested.

[0030] By adding a curing agent to the epoxy resin material to assist in curing, the pouring height of the epoxy resin layer is flush with the ventilation extension tube. After pouring, the epoxy resin layer is leveled, and the heating wire is connected to an external power supply to generate heat through the heating wire to conduct heat to the epoxy resin layer, thereby assisting the rapid curing of the epoxy resin layer and achieving the purpose of accelerating the curing of the epoxy resin layer.

[0031] By mixing white vinegar and alcohol in a 1:1 ratio, pouring the liquid onto the surface of the epoxy resin layer to react with the epoxy resin layer and soften it, the epoxy resin layer can be scraped off the top support frame plate, thereby facilitating the cleaning and recycling of construction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the composite concrete of the present invention;

[0033] Figure 2 It is a schematic diagram of the top support frame structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the internal structure of the ventilation extension tube of the present invention;

[0035] Figure 4 It is a schematic diagram of the internal structure of the top support frame of the present invention;

[0036] In the figure: 1. Rammed earth layer; 2. Crushed stone cushion layer; 3. Concrete base layer; 4. Concrete surface layer; 5. Cement smoothing layer; 6. Top support frame plate; 7. Epoxy resin layer; 8. Ventilation extension tube; 9. Edge partition; 10. Reference rod; 11. Mounting bent seat; 12. Grounding hole; 13. Grounding bolt; 14. Stainless steel round frame; 15. Isolation net; 16. Internal screw; 17. Hollow inner cavity; 18. Heating wire. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] See also Figure 1-4 , an embodiment provided by the present invention: a composite concrete, comprising a plain soil rammed layer 1, a crushed stone cushion layer 2 is arranged on the upper end of the plain soil rammed layer 1, a concrete base layer 3 is arranged on the upper end of the crushed stone cushion layer 2, a concrete surface layer 4 is arranged on the upper end of the concrete base layer 3, and a cement smoothing layer 5 is arranged on the upper end of the concrete surface layer 4;

[0039] Also includes:

[0040] A top support frame plate 6 is installed above the cement screed layer 5, and a ventilation extension tube 8 is provided at the upper end of the top support frame plate 6, and the ventilation extension tube 8 is integrally formed with the top support frame plate 6, and a reference rod 10 is provided at the lower end of the top support frame plate 6, and the reference rod 10 is integrally formed with the top support frame plate 6;

[0041] An epoxy resin layer 7 is cast on the upper surface of the top support frame plate 6, and the thickness of the epoxy resin layer 7 is equal to the height of the ventilation extension tube 8;

[0042] A hollow inner cavity 17 is arranged inside the top support frame plate 6. The hollow inner cavity 17 and the top support frame plate 6 are integrally formed, and an electric heating wire 18 is arranged inside the hollow inner cavity 17;

[0043] The edge partition 9 is arranged at the edge position of the top supporting frame plate 6. The edge partition 9 and the top supporting frame plate 6 are integrally formed, and a mounting bent seat 11 is arranged on the outer wall of the edge partition 9. The mounting bent seat 11 and the edge partition 9 are integrally formed.

[0044] When in use, the epoxy resin material is poured onto the upper end of the top support frame plate. After the epoxy resin layer is cured, the closed area of ​​the road construction is released, allowing pedestrians and cyclists to walk directly on the composite concrete pavement. During this period, the ventilation extension cylinder assists in ventilation of the concrete base layer, concrete surface layer and cement smoothing layer. The cement contains calcium hydroxide, which reacts with carbon dioxide in the air to form hard calcium carbonate, hardening the concrete pavement, achieving the purpose of directly opening the road to traffic after the concrete construction is completed, while not affecting the curing of the concrete, shortening the construction period.

[0045] See also Figure 3 A stainless steel round frame 14 is installed inside the ventilation extension tube 8, and an internal screw 16 is installed at the connection position between the stainless steel round frame 14 and the ventilation extension tube 8. The stainless steel round frame 14 is fixed to the ventilation extension tube 8 by the internal screw 16. The stainless steel round frame 14 installed inside the ventilation extension tube 8 plays the role of supporting the isolation net 15.

[0046] See also Figure 3 An isolation net 15 is arranged inside the stainless steel round frame 14 . The isolation net 15 is integrally formed with the stainless steel round frame 14 . The isolation net 15 arranged inside the stainless steel round frame 14 serves to isolate and protect the ventilation extension tube 8 .

[0047] See also Figure 2 A grounding hole 12 is provided inside the erection bent seat 11, and the grounding hole 12 is integrally formed with the erection bent seat 11. A grounding bolt 13 is installed inside the grounding hole 12. The erection bent seat 11 is fixedly connected to the curb through the grounding bolt 13. The grounding hole 12 provided inside the erection bent seat 11 serves to facilitate the grounding installation of the erection bent seat 11.

[0048] See also Figure 2 The height of the ventilation extension tube 8 is equal to the height of the edge partition 9, and the thickness of the concrete base layer 3 is greater than the thickness of the concrete surface layer 4.

[0049] See also Figure 1-4 , a preparation process of composite concrete, comprising the following steps:

[0050] Step 1: First, at the construction site of the road surface, the paving construction is carried out in the order of the soil ramming layer 1, the crushed stone cushion layer 2, the concrete base layer 3, the concrete surface layer 4 and the cement smoothing layer 5 from bottom to top;

[0051] Step 2: A top support frame plate 6 is installed above the cement trowel layer 5, and the distance between the top support frame plate 6 and the cement trowel layer 5 is determined by a reference rod 10, and the length of the reference rod 10 is equal to the distance between the top support frame plate 6 and the cement trowel layer 5;

[0052] Step 3: Based on the installation height of the top support frame plate 6, a cement curb is cast below the location where the bent seat 11 is erected. A connection hole is reserved for installation on the cement curb. The grounding bolt 13 is installed through the corresponding grounding hole 12 and the reserved connection hole for erection and fixing;

[0053] Step 4: pouring the epoxy resin material onto the upper end of the top support frame plate 6, and adding a curing agent to the epoxy resin material to assist in curing. The pouring height of the epoxy resin layer 7 is flush with the ventilation extension tube 8. After pouring, the epoxy resin layer 7 is leveled, and the electric heating wire 18 is connected to an external power source to generate heat through the electric heating wire 18 to conduct heat to the epoxy resin layer 7, thereby assisting the rapid curing of the epoxy resin layer 7.

[0054] Step 5: After the epoxy resin layer 7 is cured, the closed area of ​​the road construction is released, allowing pedestrians and cyclists to walk directly on the composite concrete road surface. During this period, the ventilation extension tube 8 assists the ventilation of the concrete base layer 3, the concrete surface layer 4 and the cement smoothing layer 5. The cement contains calcium hydroxide, which reacts with carbon dioxide in the air to form hard calcium carbonate, hardening the concrete road surface;

[0055] Step 6: After the concrete pavement is completely hardened, first remove the grounding bolts 13 so that the top support frame plate 6 can be removed from above the cement screed layer 5;

[0056] Step 7: After mixing white vinegar and alcohol in a ratio of 1:1, pour them onto the surface of the epoxy resin layer 7 in liquid form to react with the epoxy resin layer 7 to soften the epoxy resin layer 7, and then scrape the epoxy resin layer 7 off the top support frame plate 6.

[0057] See also Figure 1 The ratio of the concrete base layer 3 is cement: sand: stone: water = 1: 1.08: 2.41: 0.40, and the ratio of the concrete surface layer 4 is cement: sand: stone: water = 1: 1.40: 2.85: 0.47.

[0058] See also Figure 4 The external power supply of the heating wire 18 is a 220V AC mains power supply.

[0059] See also Figure 1 The cured hardness of the epoxy resin layer 7 is 90D on Shore A.

[0060] See also Figure 2 The top support frame plate 6, the ventilation extension tube 8, the edge partition plate 9, the reference rod 10 and the erection bent seat 11 are all made of stainless steel.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A composite concrete, comprising a rammed earth layer (1), a crushed stone cushion layer (2) being arranged on the upper end of the rammed earth layer (1), a concrete base layer (3) being arranged on the upper end of the crushed stone cushion layer (2), a concrete surface layer (4) being arranged on the upper end of the concrete base layer (3), and a cement smoothing layer (5) being arranged on the upper end of the concrete surface layer (4); Features: Also includes: A top support frame plate (6) is installed above the cement screed layer (5), and a ventilation extension tube (8) is provided at the upper end of the top support frame plate (6), and the ventilation extension tube (8) and the top support frame plate (6) are integrally formed, and a reference rod (10) is provided at the lower end of the top support frame plate (6), and the reference rod (10) and the top support frame plate (6) are integrally formed; An epoxy resin layer (7) is cast on the upper surface of the top support frame plate (6), and the thickness of the epoxy resin layer (7) is equal to the height of the ventilation extension tube (8); A hollow inner cavity (17) is arranged inside the supporting frame plate (6), the hollow inner cavity (17) and the supporting frame plate (6) are integrally formed, and an electric heating wire (18) is arranged inside the hollow inner cavity (17); An edge partition (9) is arranged at the edge position of the top support frame plate (6), the edge partition (9) and the top support frame plate (6) are integrally formed, and a mounting bend seat (11) is arranged on the outer wall of the edge partition (9), and the mounting bend seat (11) and the edge partition (9) are integrally formed; The preparation process of the composite concrete comprises the following steps: Step 1: First, at the construction site of the road surface, paving is carried out in the order of a rammed earth layer (1), a crushed stone cushion layer (2), a concrete base layer (3), a concrete surface layer (4) and a cement smoothing layer (5) from bottom to top; Step 2: A top support frame plate (6) is installed above the cement trowel layer (5), and the distance between the top support frame plate (6) and the cement trowel layer (5) is determined by a reference rod (10), and the length of the reference rod (10) is equal to the distance between the top support frame plate (6) and the cement trowel layer (5); Step 3: Based on the installation height of the top support frame plate (6), a cement curb is poured below the location where the bent seat (11) is installed. A connection hole is reserved for installation on the cement curb. A grounding bolt (13) is installed through the grounding hole (12) corresponding to the reserved connection hole to fix the installation; Step 4: pouring the epoxy resin material onto the upper end of the top support frame plate (6), and adding a curing agent to the epoxy resin material to assist in curing. The pouring height of the epoxy resin layer (7) is flush with the ventilation extension tube (8). After pouring, the epoxy resin layer (7) is leveled, and the electric heating wire (18) is connected to an external power source to generate heat through the electric heating wire (18) to conduct heat to the epoxy resin layer (7), thereby assisting the epoxy resin layer (7) to quickly cure; Step 5: After the epoxy resin layer (7) is cured, the closed area of ​​the road construction is removed, allowing pedestrians and cyclists to walk directly on the composite concrete road surface. During this period, the ventilation extension tube (8) assists the ventilation of the concrete base layer (3), the concrete surface layer (4) and the cement screed layer (5). The cement contains calcium hydroxide, which reacts with carbon dioxide in the air to form hard calcium carbonate, thereby hardening the concrete road surface. Step 6: After the concrete pavement is completely hardened, the grounding bolts (13) are first removed so that the top support frame plate (6) can be removed from above the cement screed layer (5); Step 7: white vinegar and alcohol are mixed in a ratio of 1:1, and poured onto the surface of the epoxy resin layer (7) in liquid form to react with the epoxy resin layer (7) to soften the epoxy resin layer (7), and then the epoxy resin layer (7) is scraped off from the top support frame plate (6).

2. A composite concrete according to claim 1, characterized in that: A stainless steel round frame (14) is installed inside the ventilation extension tube (8), and an internal fixing screw (16) is installed at the connection position between the stainless steel round frame (14) and the ventilation extension tube (8). The stainless steel round frame (14) is fixedly installed with the ventilation extension tube (8) via the internal fixing screw (16).

3. A composite concrete according to claim 2, characterized in that: An isolation net (15) is arranged inside the stainless steel round frame (14), and the isolation net (15) and the stainless steel round frame (14) are integrally formed.

4. A composite concrete according to claim 3, characterized in that: A grounding hole (12) is provided inside the erection bend seat (11); the grounding hole (12) and the erection bend seat (11) are integrally formed; a grounding bolt (13) is installed inside the grounding hole (12); and the erection bend seat (11) is fixedly connected to the curb via the grounding bolt (13).

5. A composite concrete according to claim 4, characterized in that: The height of the ventilation extension tube (8) is equal to the height of the edge partition (9), and the thickness of the concrete base layer (3) is greater than the thickness of the concrete surface layer (4).

6. The composite concrete according to claim 1, characterized in that: The mix ratio of the concrete base layer (3) is cement: sand: stone: water = 1: 1.08: 2.41: 0.40, and the mix ratio of the concrete surface layer (4) is cement: sand: stone: water = 1: 1.40: 2.85: 0.

47.

7. A composite concrete according to claim 6, characterized in that: The external power source of the heating wire (18) is a 220V AC mains power source.

8. A composite concrete according to claim 7, characterized in that: The cured hardness of the epoxy resin layer (7) is Shore hardness 90D.

9. A composite concrete according to claim 8, characterized in that: The top support frame plate (6), the ventilation extension tube (8), the edge partition plate (9), the reference rod (10) and the mounting bent seat (11) are all made of stainless steel.

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