Underwater high-friction non-slip mat and preparation method thereof
Patent Information
- Application Number
- CN202411416595.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2024-12-10
AI Technical Summary
The commonly used seabed treatment methods in marine engineering at this stage cannot meet the anti-slip needs of large-scale deep-sea projects and cannot provide sufficient anti-slip performance.
The dense honeycomb skeleton structure is prepared from synthetic resin, filled with mixed materials of cement, sand and polymer admixtures, and the underwater high friction anti-slip pad is prepared through 3D printing technology. Combined with the preferred component proportions and casting methods, it forms a high Anti-slip pads with compressive and water resistance.
The compressive strength and friction performance of the anti-slip pad are improved, the bonding force with the contact surface is enhanced, the bottom leveling step is reduced, manpower and material resources are saved, and the stability and durability of the project are improved.
Smart Images
Figure CN119100717A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of polymer compound materials, and in particular relates to an underwater high-friction anti-skid pad and a preparation method thereof. Background Art
[0002] Underwater non-dispersible cement mortar is a high-molecular polymer modified material with good chemical stability, erosion resistance, high water-to-land strength ratio, underwater self-compacting and other advantages. It is widely used in various fields such as engineering pouring, reinforcement of defective geology, and repair of water-related projects.
[0003] In marine engineering, in order to prevent marine engineering buildings from sliding and deflecting due to external forces such as wind and waves, designers usually need to design and manufacture gravity caissons for marine engineering buildings based on factors such as building scale, wind and wave level, and ocean depth. However, with the in-depth development of deep-sea resources, gravity caissons for marine engineering buildings need to provide higher anti-slip capabilities, but the seabed treatment methods commonly used in engineering at this stage cannot meet the needs of large-scale deep-sea projects. Summary of the invention
[0004] The object of the present invention is to provide an underwater high-friction anti-skid pad and a preparation method thereof, so as to solve the problems raised in the background technology.
[0005] The present invention adopts the following technical scheme: an underwater high-friction anti-skid pad, the underwater high-friction anti-skid pad having a dense honeycomb skeleton structure; wherein the skeleton structure is made of synthetic resin;
[0006] The skeleton structure is filled with a filling material, which includes the following components according to the component ratio: 100-120 parts of cement, 150-180 parts of sand and 13-22 parts of polymer admixture.
[0007] In a further embodiment, the polymer admixture comprises the following components according to the component ratio: 7 to 12 parts of flocculant, 5 to 9 parts of accelerator and 1 to 2 parts of powdered water reducing agent.
[0008] In a further embodiment, the cement is silicate cement of grade 52.5R or above, and the sand is natural river sand.
[0009] The method for preparing the underwater high friction anti-skid pad as described above comprises the following steps:
[0010] Step 1: using synthetic resin to prepare a skeleton structure of a predetermined size, wherein the skeleton structure is in a dense honeycomb shape;
[0011] Step 2: assemble and place the skeleton structure prepared in step 1 on the underwater bed surface that needs to be improved;
[0012] Step 3: Prepare a uniformly mixed filling material, and pour the filling material into the skeleton structure in step 2 until the filling material covers a predetermined height of the uniformly mixed upper surface;
[0013] Step 4: Underwater maintenance for 27 to 29 days.
[0014] In a further embodiment, the skeleton structure in step one is prepared by 3D printing.
[0015] In a further embodiment, the predetermined height in step three is 1-2 mm.
[0016] In a further embodiment, the filling material in step three is prepared by mixing cement, sand and polymer admixture for 20 to 30 minutes.
[0017] Beneficial effects of the present invention: 1. The geosynthetics in the anti-slip mat skeleton structure of the present application have a certain deformation ability and can be used in uneven underwater areas, thus avoiding the underwater leveling step and saving manpower and material resources.
[0018] 2. In the present application, underwater non-dispersible cement mortar is preferred, which increases the polarity of the anti-slip mat material system and enhances the bonding force between the anti-slip mat and the contact surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The figure is a schematic diagram of a dense honeycomb skeleton structure, in which a single honeycomb is a regular hexagon with a diagonal distance of 100 mm, a wall thickness of 5 mm, and a height of 200 mm. DETAILED DESCRIPTION
[0020] The principles and features of the present invention will be described below in conjunction with the embodiments of the present invention. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0021] Example 1
[0022] This embodiment discloses an underwater high friction anti-skid pad, which has a dense honeycomb skeleton structure; wherein the skeleton structure is made of synthetic resin; the skeleton structure is filled with filling materials, such as Figure 1 It should be noted that the skeleton structure in this embodiment is composed of 3D printed synthetic resin, which has the advantages of good stability and terrain adaptability, and can be used in underwater environments such as complex riverbeds or seabeds, improving the efficiency of riverbed or seabed leveling and reducing the cost of use; in addition, the 3D printed synthetic resin structure skeleton has good deformation resistance and can improve the early stability of the anti-slip mat; finally, the 3D printed synthetic resin material has good water resistance, weather resistance and corrosion resistance, which ensures the long-term stable operation of the project and reduces maintenance costs.
[0023] The filling material comprises the following components according to the component ratio: 100-120 parts of cement, 150-180 parts of sand and 13-22 parts of polymer admixture. It has the advantages of good dispersibility and stability, can form a uniform dispersion system in water, reduce the surface tension of mortar, and improve the fluidity and construction performance of mortar.
[0024] In a further embodiment, the polymer admixture includes the following components according to the component ratio: 7-12 parts of flocculant, 5-9 parts of accelerator and 1-2 parts of powdered water reducing agent. The main component of the flocculant is polypropylene monomer, and the main component of the accelerator is water-based epoxy. After mixing, a composite modifier with a compact and orderly spatial structure is formed, which can improve the mechanical properties of the mortar such as tensile strength, compressive strength and hardness, increase the surface friction resistance, and improve its anti-seepage properties.
[0025] The cement is silicate cement of grade 52.5R or above, and the sand is natural river sand.
[0026] Example 2
[0027] The skeleton structure raw material parts of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are: 80 parts of synthetic resin.
[0028] In this embodiment, the raw materials for the filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are as follows: 100 parts of cement, 150 parts of sand, and 13 parts of polymer admixture.
[0029] A method for preparing an underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar, the underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar and the preparation method thereof, the preparation method comprising the following specific steps:
[0030] 1) The synthetic resin is 3D printed into a dense honeycomb with an overall size of 500 mm×500 mm×200 mm, forming a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0031] 2) After the skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar is formed, it can be assembled and placed on the underwater bed surface that needs to be improved.
[0032] 3) After fully stirring a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, pouring it into a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, and stopping pouring when the mortar covers the surface of the structure by 1-2 mm.
[0033] 4) An underwater high friction anti-skid mat prepared based on underwater non-dispersible cement mortar can be used after underwater curing for 28 days.
[0034] Specifically, the best stirring time of the mixture of cement, sand and polymer admixture is 20 to 30 minutes. The composite modifier fully wraps the cement mortar particles, so that the cement mortar has good water resistance and durability.
[0035] Specifically, a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar was poured into a skeleton structure with a porosity of 25%, 30%, and 35%, respectively.
[0036] In this embodiment, the prepared polymer cement mortar needs to be used up within 5 hours, and the use needs to be stopped when large particles of condensate appear inside the polymer cement mortar.
[0037] In this embodiment, the skeleton structure helps to fix the filling material to facilitate underwater molding and maintenance, while increasing the compressive strength of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0038] Example 3
[0039] An underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar and a preparation method thereof, comprising a skeleton structure and a filling material.
[0040] Specifically, a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar is composed of 3D printed synthetic resin. Its advantages lie in its good stability and terrain adaptability. It can be used in underwater environments such as complex riverbeds or seabeds, thereby improving the efficiency of riverbed or seabed leveling and reducing the cost of use. In addition, the 3D printed synthetic resin structural skeleton has good deformation resistance and can improve the early stability of the anti-skid pad. Finally, the 3D printed synthetic resin material has good water resistance, weather resistance and corrosion resistance, which ensures the long-term stable operation of the project and reduces maintenance costs.
[0041] Specifically, a filling material for an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar includes a mixed combination of cement, sand and polymer admixtures. The filling material has the advantages of good dispersibility and stability, and can form a uniform dispersion system in water, reduce the surface tension of the mortar, and improve the fluidity and construction performance of the mortar.
[0042] Specifically, a filling material for an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, the polymer admixture material thereof includes a flocculant, an accelerator and a powdered water reducing agent. The main component of the flocculant is polypropylene monomer, and the main component of the accelerator is water-based epoxy. After mixing, a composite modifier with a compact and orderly spatial structure is formed, which can improve the mechanical properties of the mortar such as tensile strength, compressive strength and hardness, increase the surface friction resistance, and improve its anti-seepage properties.
[0043] In this embodiment, the skeleton structure raw material parts of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are: 90 parts of synthetic resin.
[0044] In this embodiment, the raw material portions of the filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are: 110 parts of cement, 160 parts of sand, and 18 parts of polymer admixture.
[0045] A method for preparing an underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar, the underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar and the preparation method thereof, the preparation method comprising the following specific steps:
[0046] 1) The synthetic resin is 3D printed into a dense honeycomb with an overall size of 500 mm×500 mm×200 mm, forming a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0047] 2) After the skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar is formed, it can be assembled and placed on the underwater bed surface that needs to be improved.
[0048] 3) After fully stirring a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, pouring it into a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, and stopping pouring when the mortar covers the surface of the structure by 1-2 mm.
[0049] 4) An underwater high friction anti-skid mat prepared based on underwater non-dispersible cement mortar can be used after underwater curing for 28 days.
[0050] Specifically, the best stirring time of the mixture of cement, sand and polymer admixture is 20 to 30 minutes. The composite modifier fully wraps the cement mortar particles, so that the cement mortar has good water resistance and durability.
[0051] Specifically, a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar was poured into a skeleton structure with a porosity of 25%, 30%, and 35%, respectively.
[0052] In this embodiment, the prepared polymer cement mortar needs to be used up within 5 hours, and the use needs to be stopped when large particles of condensate appear inside the polymer cement mortar.
[0053] In this embodiment, the skeleton structure helps to fix the filling material to facilitate underwater molding and maintenance, while increasing the compressive strength of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0054] Example 4
[0055] An underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar and a preparation method thereof, comprising a skeleton structure and a filling material.
[0056] Specifically, a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar is composed of 3D printed synthetic resin. Its advantages lie in its good stability and terrain adaptability. It can be used in underwater environments such as complex riverbeds or seabeds, thereby improving the efficiency of riverbed or seabed leveling and reducing the cost of use. In addition, the 3D printed synthetic resin structural skeleton has good deformation resistance and can improve the early stability of the anti-skid pad. Finally, the 3D printed synthetic resin material has good water resistance, weather resistance and corrosion resistance, which ensures the long-term stable operation of the project and reduces maintenance costs.
[0057] Specifically, a filling material for an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar includes a mixed combination of cement, sand and polymer admixtures. The filling material has the advantages of good dispersibility and stability, and can form a uniform dispersion system in water, reduce the surface tension of the mortar, and improve the fluidity and construction performance of the mortar.
[0058] Specifically, a filling material for an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, the polymer admixture material thereof includes a flocculant, an accelerator and a powdered water reducing agent. The main component of the flocculant is polypropylene monomer, and the main component of the accelerator is water-based epoxy. After mixing, a composite modifier with a compact and orderly spatial structure is formed, which can improve the mechanical properties of the mortar such as tensile strength, compressive strength and hardness, increase the surface friction resistance, and improve its anti-seepage properties.
[0059] In this embodiment, the skeleton structure raw material parts of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are: 100 parts of synthetic resin.
[0060] In this embodiment, the raw material portions of the filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar are: 120 parts of cement, 180 parts of sand, and 22 parts of polymer admixture.
[0061] A method for preparing an underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar, the underwater high-friction anti-skid pad based on underwater non-dispersible cement mortar and the preparation method thereof, the preparation method comprising the following specific steps:
[0062] 1) The synthetic resin is 3D printed into a dense honeycomb with an overall size of 500 mm×500 mm×200 mm, forming a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0063] 2) After the skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar is formed, it can be assembled and placed on the underwater bed surface that needs to be improved.
[0064] 3) After fully stirring a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, pouring it into a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, and stopping pouring when the mortar covers the surface of the structure by 1-2 mm.
[0065] 4) An underwater high friction anti-skid mat prepared based on underwater non-dispersible cement mortar can be used after underwater curing for 28 days.
[0066] 4) After fully stirring a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, pouring it into a skeleton structure of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar, and stopping pouring when the mortar covers the surface of the structure by 1-2 mm.
[0067] 5) An underwater high friction anti-skid mat prepared based on underwater non-dispersible cement mortar can be used after underwater curing for 28 days.
[0068] Specifically, the best stirring time of the mixture of cement, sand and polymer admixture is 20 to 30 minutes. The composite modifier fully wraps the cement mortar particles, so that the cement mortar has good water resistance and durability.
[0069] Specifically, a filling material of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar was poured into a skeleton structure with a porosity of 25%, 30%, and 35%, respectively.
[0070] In this embodiment, the prepared polymer cement mortar needs to be used up within 5 hours, and the use needs to be stopped when large particles of condensate appear inside the polymer cement mortar.
[0071] In this embodiment, the skeleton structure helps to fix the filling material to facilitate underwater molding and maintenance, while increasing the compressive strength of an underwater high-friction anti-skid pad prepared based on underwater non-dispersible cement mortar.
[0072] Comparative Example 1
[0073] Comparative Example 1 adopts the commonly used seabed leveling method, laying gravel on the surface and flattening it.
[0074] Detection method:
[0075] 1. Anti-skid mat compressive strength
[0076] Referring to the standard of SL352-2020 "Test Procedures for Hydraulic Concrete", the compressive strength of an underwater high-friction anti-skid pad prepared in this application based on underwater non-dispersible cement mortar was tested.
[0077] 2. Friction coefficient of anti-skid pad
[0078] The friction coefficient of an underwater high-friction anti-skid pad prepared in this application based on underwater non-dispersible cement mortar was tested using a large direct shear device, and the test sample size was 500 mm×500 mm×200 mm.
[0079] The compressive strength, equivalent friction coefficient and anti-seepage grade of the anti-skid pads of Examples 2 to 4 and Comparative Example 1 were tested to obtain comparative data, as shown in Table 1.
[0080] Table 1 Performance test data
[0081]
[0082] It can be seen from the performance test results that the underwater high-friction anti-skid pad prepared in the present application based on underwater non-dispersible cement mortar has excellent anti-skid performance and good compressive resistance. In Examples 1 to 3, the usage of each component is different, and the overall performance of Example 2 is better.
[0083] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. An underwater high friction anti-skid mat, It is characterized in that The underwater high friction anti-skid pad has a dense honeycomb skeleton structure; wherein the skeleton structure is made of synthetic resin; The skeleton structure is filled with a filling material, which includes the following components according to the component ratio: 100-120 parts of cement, 150-180 parts of sand and 13-22 parts of polymer admixture.
2. An underwater high friction anti-skid pad according to claim 1, It is characterized in that The polymer admixture comprises the following components according to the component ratio: 7 to 12 parts of flocculant, 5 to 9 parts of accelerating setting agent and 1 to 2 parts of powdered water reducing agent.
3. An underwater high friction anti-skid pad according to claim 1, It is characterized in that The cement is silicate cement of grade 52.5R or above, and the sand is natural river sand.
4. A method for preparing the underwater high friction anti-skid pad as claimed in any one of claims 1 to 3, It is characterized in that The following steps are involved: Step 1: using synthetic resin to prepare a skeleton structure of a predetermined size, wherein the skeleton structure is in a dense honeycomb shape; Step 2: assemble and place the skeleton structure prepared in step 1 on the underwater bed surface that needs to be improved; Step 3: Prepare a uniformly mixed filling material, and pour the filling material into the skeleton structure in step 2 until the filling material covers a predetermined height of the uniformly mixed upper surface; Step 4: Underwater maintenance for 27 to 29 days.
5. A method for preparing an underwater high friction anti-skid pad according to claim 4, It is characterized in that The skeleton structure in step one is prepared by 3D printing.
6. A method for preparing an underwater high friction anti-skid pad according to claim 4, It is characterized in that The predetermined height in step three is 1-2 mm.
7. The method for preparing an underwater high friction anti-skid pad according to claim 4, It is characterized in that The filling material in step three is prepared by mixing cement, sand and polymer admixture for 20 to 30 minutes.