Method for processing and construction of airport runway stone regenerative decking

Abstract

The application discloses a processing and construction method of airport runway stone recycled decorative plate, which comprises runway stone raw material debarking and cutting, runway stone standard plate front surface glue coating, hole filling glue used for glue coating contains heat-sensitive microcapsule hole filling agent, on-site paving construction of the runway stone recycled decorative plate is carried out by using cement mortar, expansion joint is opened and filled, and the decorative plate is mechanically polished and polished, etc. In the application, the heat-sensitive microcapsule hole filling agent is added into the hole filling glue, the microcapsule releases the hole filling agent in the mechanical polishing process after the recycled decorative plate is installed, the gap is filled again, the water absorption of the runway stone recycled decorative plate is reduced under the premise of not increasing the processing and construction procedures, and meanwhile, the polishing gloss is ensured.

Description

Technical Field

[0001] This invention relates to the field of runway stone recycling technology, and more specifically, to a method for processing and constructing recycled airport runway stone decorative panels. Background Technology

[0002] Airport runway stones primarily originate from the demolition processes of the flight area and apron during airport reconstruction, including discarded concrete pavement, asphalt pavement, shoulders, and runway debris. If this waste concrete is disposed of as construction waste, it not only occupies land resources but also causes secondary pollution. In fact, although airport runway stones become more brittle after years of high-frequency use, they still possess excellent hardness, modulus, and other physical properties, giving them high reuse value.

[0003] Through scientific classification, collection, and secondary processing, some discarded airport runway stones can be transformed into various building materials such as concrete decorative panels, imitation stone curb stones, prefabricated pavements, and recycled fillers, which can be directly applied in airport reconstruction or expansion projects. Among these, concrete decorative panels, as interior decoration materials, have high requirements for gloss and water absorption, requiring grinding after installation. Airport runway stones, being recycled concrete, have numerous surface pores and high water absorption. During processing, pore-filling adhesives are typically added to reduce water absorption. However, due to insufficient adhesion between the pore-filling adhesive and the material itself, the adhesive layer may peel off during mechanical grinding after installation, resulting in the recycled runway stone decorative panels failing to meet the water absorption requirements for interior decoration materials. This issue leads to high rework costs, thus limiting the large-scale application of recycled airport runway stone decorative panels. Summary of the Invention

[0004] To address the aforementioned deficiencies in existing technologies, this invention provides a processing and construction method for recycled airport runway stone decorative panels. By adding a heat-sensitive microcapsule pore-filling agent to the pore-filling adhesive, the microcapsules release the pore-filling agent during the mechanical polishing process after the recycled decorative panel is installed, thereby filling the gaps a second time, reducing the water absorption rate of the stone slab, and ensuring the polishing gloss.

[0005] To achieve the above objectives, the present invention provides a method for processing and constructing recycled airport runway stone decorative panels, comprising the following steps:

[0006] Step S1: Cut and slab the rough stones for the racetrack to obtain slabs of the required specifications;

[0007] Step S2: Apply adhesive to the front of the racetrack stone standard panel to fill the holes, sand holes and gaps on the stone surface to obtain the racetrack stone recycled decorative panel; the filling adhesive used for the adhesive application contains a heat-sensitive microcapsule filling agent.

[0008] Step S3: According to the decorative panel layout requirements, cement mortar is used to lay the recycled decorative panels of the racetrack stone on site, leaving expansion joints.

[0009] Step S4, Opening and Filling the Joints: Use a stone cutting machine to reopen and clean the expansion joints between the recycled track stone decorative panels, ensuring the joint width is uniform; fill the expansion joints with grout.

[0010] Step S5: After mechanically grinding and polishing the laid track stone recycled decorative panels, the construction is completed: During mechanical grinding, the heat-sensitive microcapsule filling agent is released when the grinding temperature reaches above 70°C.

[0011] This invention addresses the problem that the water absorption rate and gloss of recycled racetrack stone decorative panels do not meet the requirements of interior decoration materials. It adopts a technical means to apply a specific pore-filling adhesive to the surface of the racetrack stone slab and, in combination with mechanical grinding and polishing, release the pore-filling agent in the heat-sensitive microcapsules to fill the pores on the surface of the racetrack stone a second time, thereby reducing the water absorption rate of the stone slab and improving its gloss.

[0012] Furthermore, the cutting and slab preparation of the track stone rough includes: cutting large pieces of track stone rough into slabs according to the required thickness using a cutting machine, and then shaping and cutting the cut track stone rough into slabs according to the required length and width dimensions to obtain slabs of the required specifications.

[0013] Furthermore, the pore-filling adhesive includes commercial epoxy resin-based pore-filling adhesive and thermosensitive microcapsule pore-filling agent; the thermosensitive microcapsule pore-filling agent has a core-shell structure, with epoxy resin as the core material and low-crystallinity polyvinyl alcohol as the wall material; the volume percentage of the thermosensitive microcapsule pore-filling agent in the pore-filling adhesive is 10% to 30%.

[0014] Furthermore, the pore-filling adhesive includes commercial polyurethane-based pore-filling adhesive and thermosensitive microcapsule pore-filling agent; the thermosensitive microcapsule pore-filling agent has a core-shell structure, with the core material being paraffin or polyurethane and the wall material being low-crystallinity polyvinyl alcohol; the volume percentage of the thermosensitive microcapsule pore-filling agent in the pore-filling adhesive is 10% to 30%.

[0015] Furthermore, the above-mentioned thermosensitive microcapsule pore-filling agent was prepared by an emulsification-chemical crosslinking method.

[0016] Furthermore, the step of laying the recycled runway stone decorative panels in step S3 includes:

[0017] Step S31: Cleaning and leveling the concrete base layer;

[0018] Step S32, Marking lines: Mark the cross control lines on the concrete base and extend them to the bottom of the wall. Then, find the surface elevation based on the +0.5m horizontal control line of the wall and mark the horizontal elevation line on the wall.

[0019] Step S33, Apply cement slurry and lay mortar bonding layer: Sprinkle water to moisten the concrete base layer, apply a layer of neat cement slurry; draw cross control lines, and lay a leveling layer with dry hard cement mortar of 1:2 to 1:3; control the thickness so that it is 3 to 4 mm higher than the surface level line when the track stone blocks are placed.

[0020] Step S34: First, pre-wet the recycled track stone decorative panels with water. After the surface is air-dried and free of standing water, begin installation from the intersection of the control lines. Perform a trial installation by aligning the recycled track stone decorative panels with the control lines and placing them on the leveled layer. Tap the wooden pads on the recycled track stone decorative panels to compact the mortar to the installation height. Then, lift the recycled track stone decorative panels and move them aside to check if the mortar surface matches the recycled track stone decorative panels. If any hollow areas are found, fill them with mortar. Next, perform the formal installation by applying a layer of cement slurry to the back of the recycled track stone decorative panels, then laying the panels, lowering all four corners simultaneously. Gently tap the wooden pads on the recycled track stone decorative panels with a rubber or wooden mallet to level them according to the horizontal line. After laying the first panel, continue laying the recycled track stone decorative panels sequentially to the sides and backwards.

[0021] Furthermore, the sealant includes elastic foam strips and silicone sealant.

[0022] Furthermore, the mechanical grinding step in step S5 includes: after the surface of the recycled racetrack stone decorative panel is completely dry, using a stone grinding machine with diamond grinding discs, grinding and polishing the surface of the recycled racetrack stone decorative panel through multiple processes according to the grit number of the grinding discs from small to large.

[0023] Furthermore, after the surface of the recycled track stone decorative panel has completely dried, a second application of adhesive is performed on the recycled track stone decorative panel before mechanical grinding.

[0024] Furthermore, in step S6, the water absorption rate of the recycled racetrack stone decorative panel after grinding and polishing is less than 1.5%, the acid resistance is higher than 97%, and the Mohs hardness is not less than 6.

[0025] Compared with the prior art, the present invention has the following technical effects:

[0026] (1) The present invention uses a specific filling adhesive to fill the surface of the raceway stone slab and, in combination with mechanical grinding and polishing, releases the filling agent in the thermosensitive microcapsules to fill the pores on the surface of the raceway stone a second time, thereby reducing the water absorption rate of the stone slab and overcoming the problem that the general filling adhesive is easy to fall off from the stone substrate during mechanical polishing.

[0027] (2) The heat-sensitive microcapsule filling agent used in this invention has a core-shell structure. The core material is matched according to the different filling agent matrix, and the wall material is low crystallinity polyvinyl alcohol. The wall material has good film-forming properties and is stable at room temperature. When heated (above 70°C), the molecular chain movement intensifies, the capsule wall softens or breaks, and it is compatible with the frictional heat of stone grinding and polishing. It can be well combined with the polishing process of the racetrack stone recycled decorative board in the later stage, and improve the gloss while reducing the water absorption rate of the stone board without increasing the processing and construction procedures.

[0028] (3) The large-area paving process of ground stone has high requirements for the layout and line setting of the recycled decorative slabs for the runway stone. The accuracy of the line setting and the paving sequence have a great impact on the construction effect. The present invention uses cross control line marking, trial paving and formal paving combined with the paving sequence from the central axis outward to ensure the construction effect. Attached Figure Description

[0029] Figure 1 This is a flowchart illustrating the processing and construction method of recycled airport runway stone decorative panels according to one embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the preparation process of the thermosensitive microcapsule pore-filling agent in one embodiment of the present invention.

[0031] Figure 3 This is a cross-sectional view of a racetrack stone recycled decorative panel paving structure in one embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0033] The reaction apparatus, monomer compounds, initiators, emulsifiers, demulsifiers, and organic solvents involved in the following examples are all commercially available.

[0034] The detection instruments and reagents used in the following examples are all commercially available, and the detection methods used are existing technologies that can be found online.

[0035] Furthermore, the order of actions, steps, etc., in the apparatus and methods shown in the claims, specification, and drawings may be implemented in any order, unless otherwise expressly specified, and provided that the output of a preceding process is not used in a subsequent process. The term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0036] Example 1

[0037] Airport runway stone is a high-grade concrete material. During its disposal, it is recycled for environmental reasons as an indoor flooring finish. However, recycled runway stone as an indoor flooring finish faces challenges such as excessive water absorption, insufficient gloss, and inadequate acid resistance. This embodiment provides a processing and construction method for recycled airport runway stone decorative panels, transforming airport runway stone into terminal building floor decorative panels. The total area of ​​the decorative panels is approximately 3000 square meters. 2 See Figure 1 The specific processing and construction process includes the following steps:

[0038] Step S1: Cutting and slab-cutting of the track stone slabs to obtain the required specifications. Specifically, firstly, a track-mounted rock saw is used at the designated location in the North Second Finger Corridor to divide the concrete into large slabs. Secondly, the track stone slabs are cut: the raw stone blocks are placed on a circular saw and cut to a thickness of 40mm. Because the track stone is made of concrete, the saw blade is easily coated with mud during cutting, causing significant damage. Therefore, the mortar needs to be analyzed, and automatic compensation based on the type is implemented to prevent processing steps from forming on the slab surface during frequent sawing and exiting, ensuring the flatness of the slabs. Next, the finished slabs are cut: an infrared electronic bridge cutter is used to cut the track stone slabs to the required length and width dimensions to obtain the desired specifications.

[0039] Step S2: Apply adhesive to the front of the racetrack stone standard panel to fill the holes, sand holes and gaps on the stone surface to obtain the racetrack stone recycled decorative panel; the filling adhesive used for the adhesive application contains a heat-sensitive microcapsule filling agent.

[0040] As an example, the pore-filling adhesive includes a commercially available epoxy resin-based pore-filling adhesive and a thermosensitive microcapsule pore-filler; the thermosensitive microcapsule pore-filler has a core-shell structure, with epoxy resin as the core material and low-crystallinity polyvinyl alcohol as the wall material. Preferably, the volume percentage of the thermosensitive microcapsule pore-filler in the pore-filling adhesive is 10% to 30%. A volume percentage below 10% results in insufficient thermosensitive release of the adhesive; a volume percentage above 30% affects the adhesiveness of the coating, leading to poor bonding strength. For example, a pore-filling adhesive is obtained by uniformly mixing 80% by volume of a commercially available epoxy resin-based pore-filling adhesive and 20% by volume of a thermosensitive microcapsule pore-filler. The pore-filling adhesive is uniformly coated on the front side of the racetrack stone slab to fill holes, sand pits, and gaps on the stone surface.

[0041] See Figure 2 The above-mentioned thermosensitive microcapsule pore-filling agent was prepared by emulsification-chemical crosslinking method.

[0042] (1) Preparation of epoxy resin solution: Weigh 100 g of low viscosity epoxy resin (such as E-51), add 20-30 g of acetone (solvent), and stir in a 40℃ water bath until completely dissolved to form a homogeneous and transparent solution. If it is necessary to adjust the curing performance, 5-10 g of latent curing agent (such as dicyandiamide) can be added, and stirred evenly for later use.

[0043] (2) Preparation of polyvinyl alcohol (PVA) aqueous solution: Weigh 15-20 g of low crystallinity PVA (88% hydrolysis degree, 1700 degree of polymerization), add 150 mL of deionized water, and stir in a water bath at 60-70℃ for 2 hours until completely dissolved to form a 5-10% concentration transparent aqueous solution. Cool to 30-40℃, add 0.5-1 g of crosslinking agent (such as glutaraldehyde), stir evenly, and adjust the pH to 7-8 (using dilute hydrochloric acid or NaOH solution).

[0044] (3) Oil-water emulsification: Slowly drip the epoxy resin solution into the PVA aqueous solution while maintaining a stirring speed of 600-800 rpm. Control the dripping time to 15-20 minutes to form a primary emulsion. Turn on the ultrasonic emulsifier (power 300-500 W) and emulsify for 10-15 minutes until the emulsion has a uniform particle size (target particle size 5-10 μm, which can be monitored by a laser particle size analyzer).

[0045] (4) Chemical cross-linking reaction: Heat the emulsion to 50-60℃ (below the softening temperature of PVA to avoid softening of the wall material), add 0.1-0.2 g of catalyst (such as acetic acid to promote the cross-linking of glutaraldehyde and PVA), maintain the stirring speed at 400-500 rpm, and react for 2-3 hours. During this period, the PVA molecular chains cross-link through glutaraldehyde to form the wall material, which encapsulates the epoxy resin core material.

[0046] (5) After the reaction is complete, cool the system to room temperature, add 10 mL of ethanol (demulsifier), and stir for 10 minutes to promote microcapsule aggregation. Adjust the pH to 9-10 with 10% NaOH solution to terminate the cross-linking reaction and stabilize the microcapsule structure. Wash the microcapsules 2-3 times each with deionized water and ethanol by centrifugation to remove unreacted PVA, glutaraldehyde, and solvent residue until the washing solution is neutral. Place the microcapsules in a vacuum drying oven and dry at 40-50℃ for 12-24 hours until constant weight is obtained to obtain free-flowing powdered microcapsules.

[0047] It is understandable that replacing the aforementioned commercial epoxy resin-based pore filler with a commercial polyurethane-based pore filler could achieve a similar effect.

[0048] Step S3: According to the layout requirements of the decorative panels, cement mortar is used to lay the recycled decorative panels of the racetrack stone on site, leaving expansion joints.

[0049] More specifically, see Figure 3 The step S3, which involves laying recycled track stone decorative panels, includes:

[0050] Step S31: Clean and level the concrete substrate (e.g., concrete slab or concrete subbase).

[0051] Step S32, Marking lines: Mark the cross control lines on the concrete base and extend them to the bottom of the wall. Then, find the surface elevation based on the +0.5m horizontal control line of the wall and mark the horizontal elevation line on the wall.

[0052] Step S33, Apply cement slurry and lay mortar bonding layer: Sprinkle water to moisten the concrete base layer, apply a layer of neat cement slurry; draw cross control lines, and lay a leveling layer with dry hard cement mortar of 1:2 to 1:3; control the thickness so that it is 3 to 4 mm higher than the surface level line when the track stone blocks are placed.

[0053] Step S34: Set up a north-south control line on site. Due to the large north-south span, the cumulative error of the stone is also relatively large. To ensure the alignment of the stone joints in the north-south direction, the stone must be laid strictly according to the north-south control line. The east-west direction uses the axis as the control line. The east-west expansion joints coincide with the axis. When laying the stone, start laying 4mm north and south of the axis to ensure the straightness of the east-west expansion joints and to ensure an 8mm expansion joint. Start laying from the intersection of the central axis. Before laying the recycled track stone decorative panels, soak them in water and allow them to air dry until no standing water remains. Begin installation from the intersection of the control lines. First, perform a trial installation by aligning the recycled track stone decorative panels with the control lines and placing them on the leveled layer. Tap the wooden pads on the panels to compact the mortar to the desired height. Then, lift the panels and move them aside to check for a proper fit between the mortar surface and the panels. If any hollow areas are found, fill them with mortar. Next, perform the formal installation by applying a layer of cement slurry to the back of each panel, then laying the panels with all four corners lowered simultaneously. Gently tap the wooden pads on the panels with a rubber or wooden mallet to level them according to the horizontal line. After laying the first panel along the central axis, continue laying the panels sequentially to the sides and backwards.

[0054] Step S4, Joint Opening and Sealing: Due to the high surface roughness of the recycled racetrack stone decorative panels, a stone cutting machine is used to reopen and clean the expansion joints between the panels, ensuring uniform joint width. The expansion joints are then filled with sealant. The sealant is preferably a foam strip with good elasticity combined with silicone sealant. Copper strips are preferably used to cover the expansion joints.

[0055] Step S5: After mechanically grinding and polishing the reclaimed stone decorative panels, the construction is completed. During mechanical grinding, the heat-sensitive microcapsule filler is released when the grinding temperature reaches above 70°C. During the grinding process, friction generates heat on the stone surface (temperatures can reach above 70°C), while mechanical pressure compresses the microcapsules. The PVA capsule walls soften due to the increased temperature and rupture under grinding pressure, releasing epoxy resin to fill the pores. The epoxy resin cures upon cooling, adhering tightly to the stone surface. Simultaneously, the fine powder generated during grinding mixes with the epoxy resin, enhancing the density of the filling layer.

[0056] More specifically, after the recycled decorative slabs of the runway stone have completely dried, stone grinding machinery is used with diamond grinding discs. Depending on the "mesh" of the grinding discs, the stone surface is ground through multiple processes from coarse to fine, such as 50#, 150#, 300#, 500#, 1000#, 3000#, and 6000#, to make the stone surface smooth, flat, and crystal clear.

[0057] Even better, after the recycled track stone decorative panel is completely dry, it can be coated with adhesive a second time and then mechanically ground and polished.

[0058] The installed recycled track stone decorative panels meet the technical specifications in Table 1. However, recycled track stone decorative panels that only use general commercial filler adhesive still experience some adhesive layer peeling off after secondary adhesive application, requiring repeated adhesive application and rework.

[0059] Table 1 Technical Specifications of Terminal Building Floor Paving Materials

[0060] 1 compressive strength 100Mpa and above 2 Water absorption rate Less than 1.5% 3 Anti-slip coefficient Reaching Level 3 or above 4 Mohs hardness 6 5 Acid resistance Greater than 97.5% 6 High impermeability higher

[0061] As can be seen from the above description, the processing and construction method of the recycled racetrack stone decorative panel in this embodiment can significantly improve the construction quality of the recycled racetrack stone decorative panel without increasing the processing and construction procedures, and largely avoid rework and problems such as insufficient water absorption and gloss.

[0062] Example 2

[0063] This embodiment provides a processing and construction method for recycled airport runway stone decorative panels. The construction process and materials are similar to those in Embodiment 1. The difference lies in the filling adhesive, which includes a commercially available polyurethane-based filling adhesive and a heat-sensitive microcapsule filling agent. The heat-sensitive microcapsule filling agent has a core-shell structure, with a core material of paraffin wax or polyurethane and a wall material of low-crystallinity polyvinyl alcohol. The recycled runway stone decorative panels using this filling adhesive achieve the same technical specifications as those in Table 1 after installation.

[0064] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0065] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A method for processing and constructing recycled airport runway stone decorative panels, characterized in that, Includes the following steps: Step S1: Cut and slab the rough stones for the racetrack to obtain slabs of the required specifications; Step S2: Apply adhesive to the front of the racetrack stone standard panel to fill the holes, sand holes and gaps on the stone surface to obtain the racetrack stone recycled decorative panel; the filling adhesive used for the adhesive application contains a heat-sensitive microcapsule filling agent. Step S3: According to the decorative panel layout requirements, cement mortar is used to lay the recycled decorative panels of the racetrack stone on site, leaving expansion joints. Step S4, Opening and Filling Joints: Use a stone cutting machine to reopen and clean the expansion joints between the recycled decorative panels of the racetrack stone, so that the joint width is uniform. Use sealant to fill the expansion joints; Step S5: After mechanically grinding and polishing the laid track stone recycled decorative panels, the construction is completed: During mechanical grinding, the heat-sensitive microcapsule filling agent is released when the grinding temperature reaches above 70°C.

2. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The cutting and slab preparation of the track stone rough includes: cutting large pieces of track stone rough into slabs according to the required thickness using a cutting machine, and then shaping and cutting the cut track stone rough into slabs of the required length and width to obtain slabs of the required specifications.

3. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The pore-filling adhesive includes commercial epoxy resin-based pore-filling adhesive and thermosensitive microcapsule pore-filling agent; the thermosensitive microcapsule pore-filling agent has a core-shell structure, with epoxy resin as the core material and low-crystallinity polyvinyl alcohol as the wall material; the volume ratio of the thermosensitive microcapsule pore-filling agent in the pore-filling adhesive is 10%~30%.

4. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The pore-filling adhesive includes commercial polyurethane-based pore-filling adhesive and thermosensitive microcapsule pore-filling agent; the thermosensitive microcapsule pore-filling agent has a core-shell structure, with the core material being paraffin or polyurethane and the wall material being low-crystallinity polyvinyl alcohol; the volume percentage of the thermosensitive microcapsule pore-filling agent in the pore-filling adhesive is 10% to 30%.

5. The processing and construction method of the airport runway stone recycled decorative panel according to claim 3 or 4, characterized in that, The thermosensitive microcapsule pore-filling agent was prepared by an emulsification-chemical crosslinking method.

6. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The step of laying the recycled track stone decorative panels in step S3 includes: Step S31: Cleaning and leveling the concrete base layer; Step S32, Marking lines: Mark the cross control lines on the concrete base and extend them to the bottom of the wall. Then, find the surface elevation based on the +0.5m horizontal control line of the wall and mark the horizontal elevation line on the wall. Step S33, Apply cement slurry and lay mortar bonding layer: Sprinkle water to moisten the concrete base layer, apply a layer of neat cement slurry; draw cross control lines, and lay a leveling layer with dry hard cement mortar of 1:2 to 1:3; control the thickness so that it is 3 to 4 mm higher than the surface level line when the track stone blocks are placed. Step S34: First, pre-wet the recycled track stone decorative panels with water. After the surface is air-dried and free of standing water, begin installation from the intersection of the control lines. Perform a trial installation by aligning the recycled track stone decorative panels with the control lines and placing them on the leveled layer. Tap the wooden pads on the recycled track stone decorative panels to compact the mortar to the installation height. Then, lift the recycled track stone decorative panels and move them aside to check if the mortar surface matches the recycled track stone decorative panels. If any hollow areas are found, fill them with mortar. Next, perform the formal installation by applying a layer of cement slurry to the back of the recycled track stone decorative panels, then laying the panels, lowering all four corners simultaneously. Gently tap the wooden pads on the recycled track stone decorative panels with a rubber or wooden mallet to level them according to the horizontal line. After laying the first panel, continue laying the recycled track stone decorative panels sequentially to the sides and backwards.

7. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The sealant includes elastic foam strips and silicone sealant.

8. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, The mechanical grinding step in step S5 includes: after the surface of the recycled racetrack stone decorative panel is completely dry, using a stone grinding machine with diamond grinding discs, grinding and polishing the surface of the recycled racetrack stone decorative panel through multiple processes according to the grit number of the grinding discs from small to large.

9. The processing and construction method of the airport runway stone recycled decorative panel according to claim 8, characterized in that, After the surface of the recycled track stone decorative panel has completely dried, a second application of adhesive is performed on the recycled track stone decorative panel before mechanical grinding.

10. The processing and construction method of the airport runway stone recycled decorative panel according to claim 1, characterized in that, In step S6, the water absorption rate of the recycled racetrack stone decorative board after grinding and polishing is less than 1.5%, the acid resistance is higher than 97%, and the Mohs hardness is not less than 6.

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