Marine and industrial corrosion environment high-strength and high-toughness concrete corrosion-resistant material layer and preparation method thereof

Abstract

This invention relates to the field of concrete anti-corrosion materials technology, specifically to a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments and its preparation method, comprising the following steps: S1. Pouring the base concrete, performing directional roughening / grooving treatment on the adhesion surface of the protective structure before final setting, cleaning the bonding surface after natural curing, applying a modified interface adhesive to the bonding surface, drilling holes and inserting shear anchor bars for fixation, thus obtaining an interface-reinforced matrix; S2. Preparing the modified functional layer material; S3. Pouring and vibrating the modified functional layer material, performing surface finishing treatment, covering with a moisture-retaining film after initial setting, and curing to obtain the concrete anti-corrosion material layer. This invention, through the synergistic effect of the modified functional layer, modified interface adhesive, and modified UHMWPE fibers, enables the protective layer to deform in tandem with the base concrete, eliminating the risk of debonding, delamination, and hollowing under wet-dry cycles, temperature stress, and structural stress, and can be applied on a large scale in port, bridge, chemical, and municipal engineering projects.

Description

Technical Field

[0001] This invention relates to the field of concrete anti-corrosion materials technology, specifically to a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments and its preparation method. Background Technology

[0002] With the rapid development of the marine economy and industrialization, infrastructure such as ports, wharves, cross-sea bridges, subsea tunnels, and chemical plant areas are subjected to harsh service environments, including marine sulfate corrosion and industrial acid and alkali corrosion. Ordinary concrete structures are prone to durability damage in such environments, including matrix crumbling, cracking and spalling, and steel reinforcement corrosion. Structures designed for a 50-year lifespan often require large-scale repairs and reinforcement every 20-30 years, resulting in extremely high life-cycle costs. Long-term corrosion protection of concrete structures has become a core issue urgently needing to be addressed in marine engineering and industrial corrosion prevention.

[0003] Current concrete corrosion protection technologies are mainly divided into two major directions: matrix material modification and external protective structure. Both have obvious technical shortcomings, as detailed below: Modification of matrix materials: The disconnect between materials and engineering structures limits large-scale application. Existing research focuses on the mix design optimization of high-ductility cementitious composites (ECC) and alkali-activated concrete (EGC). Although these materials have been shown to possess certain high ductility and corrosion resistance, two core problems exist: First, the research remains at the level of material performance, without forming a standardized structural system adapted to engineering protection. Using these materials across the entire cross-section would increase engineering costs by 2-3 times, making large-scale promotion in new construction projects and the reinforcement of existing structures impossible. Second, existing EGC materials exhibit rapid ductility and strength degradation under harsh corrosive environments such as long-term sulfate wet-dry cycles, with significant performance deterioration after 180 days of corrosion. Their long-term service stability cannot meet the 50-year design life requirements for marine and industrial corrosive environments.

[0004] External protective structure: Poor interface reliability, insufficient crack control, and short protective lifespan. Conventional protective systems often employ single-layer protection such as anti-corrosion coatings, polymer mortar, and waterproof membranes. These suffer from weak adhesion to the concrete substrate, poor impact resistance, and susceptibility to cracking and delamination under structural stress and deformation, often resulting in protective layer peeling failure within 3-5 years. Some composite protective structures, while employing multiple layers, rely solely on simple interface roughening without targeted interface reinforcement. Under the coupled effects of wet-dry cycles, temperature stress, and structural deformation, they are highly prone to interface debonding and delamination, allowing corrosive media to rapidly penetrate the substrate through interface gaps, leading to complete protective failure. Furthermore, existing protective structures cannot achieve a steady-state multi-crack cracking pattern, easily developing macroscopic cracks exceeding 200μm in width under stress, far exceeding the penetration threshold of corrosive media and failing to prevent the intrusion of sulfates and chloride ions.

[0005] Shortcomings in engineering application: Lack of standardized construction methods and poor quality control. Existing protective technologies have not formed standardized preparation and construction processes, and on-site construction is highly dependent on the skill level of workers, resulting in large fluctuations in quality; moreover, they cannot meet the needs of multiple scenarios such as cast-in-place construction of new projects, reinforcement of existing structures, and prefabricated industrialized construction, resulting in poor engineering adaptability and difficulty in large-scale promotion.

[0006] Based on the core defects of existing technologies, there is an urgent need to develop a protection system that deeply integrates high-performance corrosion-resistant materials with structural innovation. This system should not only have the advantages of high strength, toughness, and high corrosion resistance of EGC materials, but also solve the industry pain points of interface debonding and uncontrolled cracking through structural innovation. At the same time, it should form a standardized, low-cost, and multi-scenario adaptable construction method, and ultimately achieve long-term and reliable protection of concrete structures in marine and industrial corrosive environments. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments and its preparation method.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments includes the following preparation steps: S1. Pour the base concrete (the selected base concrete can be a new construction project of ordinary reinforced concrete structure or an existing project of concrete base to be reinforced, with a strength grade of not less than C30). Before final setting, perform directional roughening / grooving on the attachment surface of the protective structure. After natural curing, clean the bonding surface and apply a modified interface adhesive with a thickness of 1-2mm to the bonding surface. Drill holes and insert shear anchor bars for fixation to obtain an interface-reinforced base. S2. Preparation of modified functional layer materials: S21. By weight, add 500-700 parts of fly ash (F grade fly ash), 300-500 parts of slag (blast furnace S105 slag), 180-200 parts of quartz powder, 10-15 parts of barium chloride, and 1.5-2.5 parts of calcium carbonate whiskers to a planetary mixer and dry mix at 70-80 r / min until uniformly mixed. S22. While stirring, add 0.8-1.2 parts of zinc sulfate, 0.3-0.6 parts of polyethylene glycol, 360-400 parts of alkali activator and 60-80 parts of water to the mixture obtained in step S21. Stir at 70-80 r / min for 2-5 min, and then stir rapidly at 130-140 r / min for 1-3 min. S23. Add 0.5-1 parts of PVA1788 powder and 20-25 parts of modified UHMWPE fiber to the mixture obtained in step S22 while stirring. Stir at 70-80 r / min for 2-5 min until the mixture is evenly dispersed to obtain the modified functional layer material. S3. 20-30 minutes after the interface reinforcement matrix is ​​formed in step S1, the modified functional layer material obtained in step S2 is poured and vibrated, and the thickness is controlled to be 20-80mm. After pouring, the surface is smoothed. After initial setting, a moisturizing film is covered. After curing for 22-24 hours, the material is demolded and watered. After curing for 28-30 days, the concrete anti-corrosion material layer is obtained.

[0009] Preferably, the preparation of the modified interfacial adhesive includes the following steps: S11. By mass, pour 40-50 parts of 10mol / L sodium hydroxide solution into 90-100 parts of 2.25 modulus sodium silicate solution, stir until clear, then add 15-20 parts of styrene-butadiene emulsion and 0.5-1 parts of polycarboxylate superplasticizer, and continue stirring for 8-10 minutes to obtain composite wet material. S12. Add 50-60 parts of slag, 15-20 parts of fly ash, 15-20 parts of quartz powder and 2-3 parts of silica sol to a planetary mixer and dry mix at a speed of 80-100 r / min for 5-8 min to obtain composite powder. S13. Mix the composite wet material and composite powder obtained in steps S11 and S12, add 20-30 parts of water at a speed of 80-100 r / min and stir for 3-5 min, then stir at a speed of 140-150 r / min for 1-3 min to finally obtain the modified interface binder.

[0010] Preferably, the preparation of modified UHMWPE fibers includes the following steps: S231. By mass, mix 5-6 parts of tris(hydroxymethyl)nitromethane with 800-900 parts of deionized water, adjust the pH to 8.5 with dilute hydrochloric acid, add 2-3 parts of dopamine hydrochloride, stir well to obtain a brown solution. S232. Dissolve 1-2 parts of KH-550 in 80-100 parts of anhydrous ethanol, then add it to the brown solution obtained in step S231, and stir at 200-300 r / min for 20-30 min to obtain the modified treatment solution. S233. Immerse 80-100 parts of UHMWPE fiber completely in the modification solution obtained in step S232, seal the container, and react with shaking at 100-150 r / min for 22-24 hours under light-protected conditions at 30°C. Then take it out, wash it with deionized water 3-5 times, and dry it to obtain modified UHMWPE fiber.

[0011] Preferably, the roughening / grooving treatment has a roughening depth of 3-8mm, a groove spacing of 50-100mm, a groove depth of 5-10mm, a groove width of 10-15mm, and an interface roughness profile arithmetic mean deviation Ra≥100μm.

[0012] Preferably, the shear anchor bar is selected from either polypropylene fiber reinforcement or stainless steel reinforcement, with a diameter of 6-10mm.

[0013] Preferably, the fixed anchoring depth is ≥50mm, the spacing is 200-300mm, the anchoring is fixed with anchoring adhesive, the outward extension length is consistent with the design thickness of the functional layer, and the arrangement is in a quincunx pattern.

[0014] Preferably, the alkali activator in step S22 is prepared by mixing a 2.25 modulus sodium silicate solution and a 10 mol / L sodium hydroxide solution in a 2:1 ratio.

[0015] Preferably, a high-frequency micro vibrator is used for vibration in step S3.

[0016] Preferably, the stirring speed in step S11 is 200-300 r / min.

[0017] A high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments is prepared by the above-mentioned preparation method.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the synergistic effect of a modified functional layer, a modified interface binder, and modified UHMWPE fibers, enables the matrix material to retain over 80% of its strength and ductility after 180 days of sulfate wet-dry cycle corrosion. It effectively blocks the penetration of sulfate and chloride ions, addressing corrosion degradation from both material and structural perspectives. The protective lifespan can reach over 50 years, significantly reducing overall life-cycle maintenance costs. Simultaneously, the synergistic effect of these three components allows the protective layer to deform in tandem with the base concrete, eliminating the risk of delamination, separation, or hollowing under wet-dry cycles, temperature stress, and structural loads, ensuring the long-term effectiveness of the protective system.

[0019] 2. This invention significantly improves economic efficiency, catering to the needs of various scenarios such as new construction projects, existing reinforcement, and industrialized construction. The construction process is simple, quality is controllable, and it can be applied on a large scale in port, bridge, chemical, and municipal engineering projects. Furthermore, this invention uses an alkali-activated gelation system that releases no toxic or harmful substances, possessing both excellent environmental and engineering performance, aligning with the development direction of green infrastructure. Attached Figure Description

[0020] Figure 1 This is a process flow diagram for preparing the high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to the present invention. Figure 2This is a process flow diagram for preparing the modified interfacial adhesive of the present invention; Figure 3 This is a process flow diagram for preparing the modified UHMWPE fiber of this invention. Detailed Implementation

[0021] The present invention will now be clearly and completely described in conjunction with embodiments thereof. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-3 The present invention provides a technical solution: Example 1 A method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments: Before preparing the anti-corrosion material layer of concrete, modified UHMWPE fibers and modified interface binders are prepared first: The preparation of modified UHMWPE fibers includes the following steps: S231. Mix 5g of tris(hydroxymethyl)nitromethane with 800g of deionized water, adjust the pH to 8.5 with dilute hydrochloric acid, add 2g of dopamine hydrochloride, stir well to obtain a brown solution; S232. Dissolve 1g KH-550 in 80g anhydrous ethanol, then add it to the brown solution obtained in step S231, and stir at 200r / min for 20min to obtain the modified treatment solution. S233. 80g of UHMWPE fiber is completely immersed in the modified treatment solution obtained in step S232. After sealing the container, the reaction is carried out at 30°C under light-protected conditions and shaken at a speed of 100r / min for 22h. After removal, it is washed 3 times with deionized water and dried to obtain modified UHMWPE fiber.

[0023] The preparation of modified interfacial adhesives includes the following steps: S11. Pour 40g of 10mol / L sodium hydroxide solution into 90g of 2.25 modulus sodium silicate solution, stir at 200r / min until clear, then add 15g of styrene-butadiene emulsion and 0.5g of polycarboxylate superplasticizer, and continue stirring for 8min to obtain composite wet material; S12. Add 50g of slag, 15g of fly ash, 15g of quartz powder and 2g of silica sol to a planetary mixer and dry mix at 80r / min for 5min to obtain composite powder. S13. Mix the composite wet material and composite powder obtained in steps S11 and S12, add 20g of water at 80r / min and stir for 3min, then stir at 140r / min for 1min to finally obtain the modified interface binder.

[0024] S1. Pour the base concrete. Before final setting, perform directional roughening / grooving treatment on the attachment surface of the protective structure (roughening depth 3mm, groove spacing 50mm, groove depth 5mm, groove width 10mm). After natural curing, clean the bonding surface and apply a 1mm thick modified interface adhesive to the bonding surface. Drill holes and insert shear anchor bars (polypropylene fiber bars) for fixation (anchoring depth 50mm, spacing 200mm, fixed with anchoring adhesive, the outward extension length is consistent with the design thickness of the functional layer, arranged in a quincunx pattern) to obtain the interface-reinforced base. S2. Preparation of modified functional layer materials: S21. Add 500g of F-grade fly ash, 300g of blast furnace S105 slag, 180g of quartz powder, 10g of barium chloride, and 1.5g of calcium carbonate whiskers to a planetary mixer and dry mix at 70r / min until uniformly mixed. S22. While stirring, add 0.8g zinc sulfate, 0.3g polyethylene glycol, 360g alkali activator (prepared by mixing 2.25 modulus sodium silicate solution and 10mol / L sodium hydroxide solution in a 2:1 ratio) and 60g water to the mixture obtained in step S21. Stir at 70r / min for 2min, then stir rapidly at 130r / min for 1min. S23. Add 0.5g PVA1788 powder and 20g modified UHMWPE fiber to the mixture obtained in step S22 while stirring. Stir at 70r / min for 2min until evenly dispersed to obtain the modified functional layer material. S3. 20 minutes after the interface reinforcement matrix is ​​formed in step S1, the modified functional layer material obtained in step S2 is poured and vibrated using a high-frequency micro vibrator to control the thickness to 20 mm. After pouring, the surface is smoothed and covered with a moisturizing film after initial setting. After curing for 22 hours, the material is demolded and watered. After curing for 28 days, the concrete anti-corrosion material layer is obtained.

[0025] Example 2 A method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments: Before preparing the anti-corrosion material layer of concrete, modified UHMWPE fibers and modified interface binders are prepared first: The preparation of modified UHMWPE fibers includes the following steps: S231. Mix 6g of tris(hydroxymethyl)nitromethane with 900g of deionized water, adjust the pH to 8.5 with dilute hydrochloric acid, add 3g of dopamine hydrochloride, stir well to obtain a brown solution; S232. Dissolve 2g KH-550 in 100g anhydrous ethanol, then add it to the brown solution obtained in step S231, and stir at 300r / min for 30min to obtain the modified treatment solution. S233. 100g of UHMWPE fiber is completely immersed in the modified treatment solution obtained in step S232. After sealing the container, the mixture is shaken at 150r / min for 24h under the dark at 30℃. After removal, it is washed 5 times with deionized water and dried to obtain modified UHMWPE fiber.

[0026] The preparation of modified interfacial adhesives includes the following steps: S11. Pour 50g of 10mol / L sodium hydroxide solution into 100g of 2.25 modulus sodium silicate solution, stir at 300r / min until clear, then add 20g of styrene-butadiene emulsion and 1g of polycarboxylate superplasticizer, and continue stirring for 10min to obtain composite wet material; S12. Add 60g of slag, 20g of fly ash, 20g of quartz powder and 3g of silica sol to a planetary mixer and dry mix at 100r / min for 8min to obtain composite powder. S13. Mix the composite wet material and composite powder obtained in steps S11 and S12, add 30g of water at 100r / min and stir for 5min, then stir at 150r / min for 3min to finally obtain the modified interface binder.

[0027] S1. Pour the base concrete. Before final setting, perform directional roughening / grooving treatment on the attachment surface of the protective structure (roughening depth 8mm, groove spacing 100mm, groove depth 10mm, groove width 15mm). After natural curing, clean the bonding surface and apply a 2mm thick modified interface adhesive to the bonding surface. Drill holes and insert shear anchor bars (polypropylene fiber bars) for fixation (anchoring depth 52mm, spacing 300mm, fixed with anchoring adhesive, the outward extension length is consistent with the design thickness of the functional layer, arranged in a quincunx pattern) to obtain the interface-reinforced base. S2. Preparation of modified functional layer materials: S21. Add 700g of F-grade fly ash, 500g of blast furnace S105 slag, 200g of quartz powder, 15g of barium chloride, and 2.5g of calcium carbonate whiskers to a planetary mixer and dry mix at 80r / min until uniformly mixed. S22. While stirring, add 1.2g zinc sulfate, 0.6g polyethylene glycol, 400g alkali activator (prepared by mixing 2.25 modulus sodium silicate solution and 10mol / L sodium hydroxide solution in a 2:1 ratio) and 80g water to the mixture obtained in step S21. Stir at 80r / min for 5min, and then stir rapidly at 140r / min for 3min. S23. Add 1g of PVA1788 powder and 25g of modified UHMWPE fiber to the mixture obtained in step S22 while stirring. Stir at 80r / min for 5min until the mixture is evenly dispersed to obtain the modified functional layer material. S3. 30 minutes after the interface reinforcement matrix is ​​formed in step S1, the modified functional layer material obtained in step S2 is poured and vibrated using a high-frequency micro vibrator to control the thickness to 80 mm. After pouring, the surface is smoothed and covered with a moisturizing film after initial setting. After curing for 24 hours, the material is demolded and watered. After curing for 30 days, the concrete anti-corrosion material layer is obtained.

[0028] Example 3 A method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments: Before preparing the anti-corrosion material layer of concrete, modified UHMWPE fibers and modified interface binders are prepared first: The preparation of modified UHMWPE fibers includes the following steps: S231. Mix 5.5g of tris(hydroxymethyl)nitromethane with 850g of deionized water, adjust the pH to 8.5 with dilute hydrochloric acid, add 2.5g of dopamine hydrochloride, stir well to obtain a brown solution; S232. Dissolve 1.5g KH-550 in 90g anhydrous ethanol, then add it to the brown solution obtained in step S231, and stir at 250r / min for 25min to obtain the modified treatment solution. S233. 90g of UHMWPE fiber is completely immersed in the modified treatment solution obtained in step S232. After sealing the container, the reaction is carried out at 30°C under light-protected conditions and shaken at a speed of 120r / min for 23h. After removal, it is washed 4 times with deionized water and dried to obtain modified UHMWPE fiber.

[0029] The preparation of modified interfacial adhesives includes the following steps: S11. Pour 45g of 10mol / L sodium hydroxide solution into 95g of 2.25 modulus sodium silicate solution, stir at 250r / min until clear, then add 18g of styrene-butadiene emulsion and 0.8g of polycarboxylate superplasticizer, and continue stirring for 9min to obtain composite wet material; S12. Add 55g of slag, 18g of fly ash, 17g of quartz powder and 2.5g of silica sol to a planetary mixer and dry mix at 90r / min for 7min to obtain composite powder. S13. Mix the composite wet material and composite powder obtained in steps S11 and S12, add 25g of water at 90r / min and stir for 4min, then stir at 145r / min for 2min to finally obtain the modified interface binder.

[0030] S1. Pour the base concrete. Before final setting, perform directional roughening / grooving treatment on the attachment surface of the protective structure (roughening depth 5mm, groove spacing 80mm, groove depth 8mm, groove width 12mm). After natural curing, clean the bonding surface and apply a 1.5mm thick modified interface adhesive to the bonding surface. Drill holes and insert shear anchor bars (stainless steel bars) for fixation (anchoring depth 55mm, spacing 250mm, fixed with anchoring adhesive, the extension length is consistent with the design thickness of the functional layer, arranged in a quincunx pattern) to obtain the interface-reinforced base. S2. Preparation of modified functional layer materials: S21. Add 600g of F-grade fly ash, 400g of blast furnace S105 slag, 190g of quartz powder, 12g of barium chloride, and 2g of calcium carbonate whiskers to a planetary mixer and dry mix at 75r / min until uniformly mixed. S22. While stirring, add 1g of zinc sulfate, 0.5g of polyethylene glycol, 380g of alkali activator (prepared by mixing sodium silicate solution with 2.25 modulus and sodium hydroxide solution in a 2:1 ratio) and 70g of water to the mixture obtained in step S21. Stir at 75r / min for 3min, and then stir rapidly at 135r / min for 2min. S23. Add 0.6g PVA1788 powder and 22g modified UHMWPE fiber to the mixture obtained in step S22 while stirring. Stir at 75r / min for 3min until evenly dispersed to obtain the modified functional layer material. S3. 24 minutes after the interface reinforcement matrix is ​​formed in step S1, the modified functional layer material obtained in step S2 is poured and vibrated using a high-frequency micro vibrator to control the thickness to 50 mm. After pouring, the surface is smoothed and covered with a moisturizing film after initial setting. After curing for 23 hours, the material is demolded and watered. After curing for 29 days, the concrete anti-corrosion material layer is obtained.

[0031] Comparative Example 1 The only difference between Comparative Example 1 and Example 1 is that no modified UHMWPE fiber was added in this comparative example; the other steps are exactly the same in Comparative Example 1 and Example 1.

[0032] Comparative Example 2 The only difference between Comparative Example 2 and Example 1 is that the modified interface binder is replaced with an acrylic emulsion in this comparative example, while the other steps are exactly the same in Comparative Example 2 and Example 1.

[0033] Performance testing: The interfacial bond strength of the concrete anti-corrosion material layers obtained in Examples 1-3 and Comparative Examples 1-2 was tested according to GB / T 50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Concrete". Pull-out tests were performed using a universal testing machine at a loading rate of 0.05 MPa / s, and the failure load and failure interface location were recorded.

[0034] The chloride ion penetration resistance of the concrete anti-corrosion material layers obtained in Examples 1-3 and Comparative Examples 1-2 was tested according to GB / T 50082-2009 "Standard Test Method for Long-Term Performance and Durability of Ordinary Concrete" (RCM method). A voltage of 30V was applied, and the chloride ion penetration depth was tested for 6 hours. The diffusion coefficient was calculated.

[0035] The sulfate resistance of the concrete anti-corrosion material layers obtained in Examples 1-3 and Comparative Examples 1-2 was tested according to GB / T 50082-2009 "Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete". The specimens were immersed in a 5% Na₂SO₄ solution for 16 hours, then dried at 80℃ for 6 hours and cooled for 2 hours, with each cycle lasting 24 hours. After 180 cycles, the compressive / flexural strength retention rate was tested. The final data are shown in Table 1 below. Table 1 Performance Test Results As shown in Table 1, the high-strength and tough concrete anti-corrosion material layers for marine and industrial corrosive environments obtained in Examples 1-3 are superior to the comparative examples in all aspects. This demonstrates that the synergistic effect of the modified functional layer, modified interface adhesive, and modified UHMWPE fiber effectively improves the interface bonding strength. This ensures that the protective layer can deform in tandem with the substrate under wet-dry cycles and temperature stress, and never detaches. It achieves the three major goals of zero interface debonding, precise crack control, and long-term durable anti-corrosion, with comprehensive performance improvement and mutual support.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments, characterized in that, The preparation steps include the following: S1. Pour the base concrete, and before the final setting, perform directional roughening / grooving on the attachment surface of the protective structure. After natural curing, clean the bonding surface, apply a modified interface adhesive with a thickness of 1-2mm to the bonding surface, drill holes and insert shear anchor bars for fixation, and obtain an interface-reinforced base. S2. Preparation of modified functional layer materials: S21. By weight, add 500-700 parts fly ash, 300-500 parts slag, 180-200 parts quartz powder, 10-15 parts barium chloride, and 1.5-2.5 parts calcium carbonate whiskers to a planetary mixer and dry mix at 70-80 r / min until uniformly mixed. S22. While stirring, add 0.8-1.2 parts of zinc sulfate, 0.3-0.6 parts of polyethylene glycol, 360-400 parts of alkali activator and 60-80 parts of water to the mixture obtained in step S21. Stir at 70-80 r / min for 2-5 min, and then stir rapidly at 130-140 r / min for 1-3 min. S23. Add 0.5-1 parts of PVA1788 powder and 20-25 parts of modified UHMWPE fiber to the mixture obtained in step S22 while stirring. Stir at 70-80 r / min for 2-5 min until the mixture is evenly dispersed to obtain the modified functional layer material. S3. 20-30 minutes after the interface reinforcement matrix is ​​formed in step S1, the modified functional layer material obtained in step S2 is poured and vibrated, and the thickness is controlled to be 20-80mm. After pouring, the surface is smoothed. After initial setting, a moisturizing film is covered. After curing for 22-24 hours, the material is demolded and watered. After curing for 28-30 days, the concrete anti-corrosion material layer is obtained.

2. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, The preparation of the modified interfacial adhesive includes the following steps: S11. By mass, pour 40-50 parts of 10mol / L sodium hydroxide solution into 90-100 parts of 2.25 modulus sodium silicate solution, stir until clear, then add 15-20 parts of styrene-butadiene emulsion and 0.5-1 parts of polycarboxylate superplasticizer, and continue stirring for 8-10 minutes to obtain composite wet material. S12. Add 50-60 parts of slag, 15-20 parts of fly ash, 15-20 parts of quartz powder and 2-3 parts of silica sol to a planetary mixer and dry mix at a speed of 80-100 r / min for 5-8 min to obtain composite powder. S13. Mix the composite wet material and composite powder obtained in steps S11 and S12, add 20-30 parts of water at a speed of 80-100 r / min and stir for 3-5 min, then stir at a speed of 140-150 r / min for 1-3 min to finally obtain the modified interface binder.

3. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, The preparation of the modified UHMWPE fiber includes the following steps: S231. By mass, mix 5-6 parts of tris(hydroxymethyl)nitromethane with 800-900 parts of deionized water, adjust the pH to 8.5 with dilute hydrochloric acid, add 2-3 parts of dopamine hydrochloride, stir well to obtain a brown solution. S232. Dissolve 1-2 parts of KH-550 in 80-100 parts of anhydrous ethanol, then add it to the brown solution obtained in step S231, and stir at 200-300 r / min for 20-30 min to obtain the modified treatment solution. S233. Immerse 80-100 parts of UHMWPE fiber completely in the modification solution obtained in step S232, seal the container, and react with shaking at 100-150 r / min for 22-24 hours under light-protected conditions at 30°C. Then take it out, wash it with deionized water 3-5 times, and dry it to obtain modified UHMWPE fiber.

4. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, The roughening / grooving process involves a roughening depth of 3-8mm, a groove spacing of 50-100mm, a groove depth of 5-10mm, and a groove width of 10-15mm.

5. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, The shear anchor bar is selected from either polypropylene fiber reinforcement or stainless steel reinforcement, with a diameter of 6-10mm.

6. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, The fixed anchoring depth is ≥50mm, the spacing is 200-300mm, and the anchoring is fixed with rebar adhesive. The outward extension length is consistent with the design thickness of the functional layer and is arranged in a quincunx pattern.

7. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, In step S22, the alkaline activator is prepared by mixing a 2.25 modulus sodium silicate solution and a 10 mol / L sodium hydroxide solution in a 2:1 ratio.

8. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 1, characterized in that, In step S3, a high-frequency micro vibrator is used for vibration.

9. The method for preparing a high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments according to claim 2, characterized in that, The stirring speed in step S11 is 200-300 r / min.

10. A high-strength and tough concrete anti-corrosion material layer for marine and industrial corrosive environments, characterized in that, It is prepared by the preparation method described in any one of claims 1-9.

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