Cement concrete pavement joint long-acting waterproof composite material

Abstract

The invention discloses a cement concrete pavement joint long-acting waterproof composite material, and relates to the technical field of waterproof materials, the composite material is composed of three parts, the inner part is a rubber strip, the middle part is non-oil-seepage creep rubber, and the outer part is a water-soluble film; according to the long-acting waterproof composite material, the joint backing strip which is commonly used at present is embedded in the bottom of a joint, waterproof paint on the upper portion is prevented from permeating downwards through a crack, the novel non-oil-seepage creep rubber material is coated and directly adheres to cement concrete, the waterproof effect is achieved, the low-cost asphalt material is poured into the upper portion, foreign matter is prevented from being embedded, and the long-acting waterproof composite material has the long-acting waterproof effect. Meanwhile, the composite material is protected from being in contact with air, sunlight and sundries, so that the durability of the composite material is greatly improved, and a waterproof system of a joint can be thoroughly changed.

Description

Technical Field

[0001] This invention belongs to the field of waterproof materials technology, and in particular relates to a long-lasting waterproof composite material for cement concrete pavement joints. Background Technology

[0002] In the design and construction of cement concrete pavements, numerous artificial joints are typically installed to prevent irregular cracks. These joints can develop cracks, which easily allow water to seep in and hard objects to embed. Therefore, they must be sealed promptly to prevent damage to the subgrade and pavement. Currently, joint sealant is commonly used for joint treatment; however, due to the inherent properties of the sealant, especially in airport environments, issues such as rapid failure and inability to seal are observed. Many airports experience sealant loss of adhesion, cracking, and extrusion within 2-3 years of completion, or even after replacement, leading to water seepage into the foundation and hard objects embedding in the joints, resulting in a series of pavement defects that severely impact airport performance and threaten flight safety.

[0003] In my country, cement concrete pavement joint fillers have evolved from the earliest heated asphalt and polyvinyl chloride (PVC) sealant types to the current room-temperature applied polyurethane, polysulfide, silicone, and modified silane types, which are now mainly mid-to-high-end joint fillers. Although these types of joint fillers have improved in terms of filling effect and performance, problems such as poor adhesion, inadequate aging resistance, poor durability, and difficulty in controlling construction quality still exist in practical applications.

[0004] Currently, most airports have high standards for long-life concrete pavement, creating an urgent need for sealing materials and construction methods that provide 10-20 year waterproofing. Non-oil-permeable creep rubber is a relatively new type of waterproof material with high creep resistance and adhesion, showing excellent application results in building waterproofing. This invention utilizes the good creep and adhesion properties of non-oil-permeable creep rubber, combined with the characteristics of cement concrete pavement joints, using a rubber strip as the inner core. This increases the material size to meet joint requirements and also increases the material strength to meet transportation and installation requirements. Furthermore, the packaging characteristics of a water-soluble film cleverly solve the problem of non-oil-permeable creep rubber's good adhesion but poor transportability. Summary of the Invention

[0005] The purpose of this invention is to address the practical shortcomings of cement concrete pavement joint materials: poor durability, frequent replacement, and difficulty in detecting whether existing materials are waterproof and whether replacement is necessary. This invention proposes a long-lasting waterproof composite material for cement concrete pavement joints. This composite material possesses excellent transportability, good workability, and good adhesion to cement concrete, while also exhibiting good creep properties to accommodate the expansion and contraction of cement concrete. To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a long-lasting waterproof composite material for cement concrete pavement joints. The composite material consists of three parts: an inner rubber strip, a middle non-oil-permeable creep rubber, and an outer water-soluble film.

[0006] Furthermore, the rubber strip is cylindrical and can be made of the backing strip material used in the joints of airport cement concrete pavement. The purpose is to increase the volume of the composite material, while also increasing its strength and workability. It is a finished material.

[0007] Furthermore, the non-oil-permeable creep rubber is a special material, a type of elasto-plastic gel coating with high creep resistance, high adhesion, and waterproof function, made primarily of rubber, and is a finished material.

[0008] Furthermore, the water-soluble film is a water-soluble polymer material that is rapidly dissolved in water and is produced through a specific film-forming process. It is a new type of biodegradable green packaging material and a finished product. The water-soluble film coats the non-oil-permeable creep rubber, inhibiting its high adhesion properties. After construction, it is rapidly degraded by spraying with high-temperature water, exposing the non-oil-permeable creep rubber and allowing it to adhere to the cement concrete, thus providing a waterproof effect.

[0009] The present invention has the following beneficial effects: 1. The long-lasting waterproof composite material of this invention coats the commonly used joint backing strip (embedded at the bottom of the joint to prevent the upper waterproof coating from seeping down through cracks) with a new type of non-oil-permeable creep rubber material, which is directly adhered to the cement concrete to play a waterproof role. The top is then filled with inexpensive asphalt material to prevent foreign objects from embedding, while protecting the composite material from contact with air, sunlight and debris, which greatly improves the durability of the composite material and can completely change the waterproof system of the joint.

[0010] 2. The long-lasting waterproof composite material of this invention can greatly extend the waterproof period of joints, reducing defects such as broken slabs in cement concrete pavements and reducing the number of times joint materials need to be replaced. Its long-term economic performance far exceeds that of current waterproofing systems.

[0011] 3. Long-lasting waterproof composite materials can greatly extend the waterproofing period of joints, reducing defects such as broken slabs in cement concrete pavements and the number of times joint materials need to be replaced. Their long-term economic performance far exceeds that of current waterproofing systems.

[0012] 4. The water-soluble film used in the long-lasting waterproof composite material of this invention is a green, environmentally friendly, and biodegradable material.

[0013] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structural cross-section of a long-lasting waterproof composite material for cement concrete pavement joints according to the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1 As shown, the present invention is a long-lasting waterproof composite material for cement concrete pavement joints. The composite material can maintain the water-sealing effect of the concrete joints for a long time, with the water-sealing effect lasting for more than 10 years.

[0018] The composite material consists of three parts: an inner rubber strip, a middle non-oil-permeable creep rubber, and an outer water-soluble film.

[0019] The rubber strip is cylindrical and can be made from the backing strip material used in the joints of airport cement concrete pavement. Its purpose is to increase the volume of the composite material, while also increasing its strength and workability. It is a finished material.

[0020] Non-oil-permeable creep rubber is a special material. It is an elastic-plastic gel coating with high creep resistance, high adhesion, and waterproof function, made primarily of rubber. It is a finished material.

[0021] Water-soluble film is a water-soluble polymer material produced through a specific film-forming process. It dissolves rapidly in water and is a new type of biodegradable green packaging material. Its addition solves the packaging and transportation problems associated with the high adhesion properties of non-oil-permeable creep rubber. Furthermore, after application, it rapidly degrades through high-temperature water spraying, exposing the non-oil-permeable creep rubber, which then quickly adheres to the cement concrete, providing a waterproof effect.

[0022] One specific application of this embodiment is: Example 1: A long-lasting waterproof composite material for cement concrete pavement joints, comprising the following materials and dimensions: The interior uses 8mm diameter rubber strips as backing material; In the middle section, a 2mm thick non-oil-permeable creep rubber is evenly adhered onto a rubber strip with a diameter of 8mm using a corresponding screw extrusion device; Using specific packaging equipment, a water-soluble film is wrapped around a non-oil-permeable creep rubber surface to form a long-lasting waterproof composite material for cement concrete pavement joints.

[0023] This type of composite material has a diameter of 12mm and can be used in cuts with a width of 8mm and a depth of 3mm.

[0024] Example 2: A long-lasting waterproof composite material for cement concrete pavement joints, comprising the following materials and dimensions: The interior uses a 12mm diameter rubber strip as the backing material; In the middle section, a 2mm thick non-oil-permeable creep rubber is evenly adhered onto a rubber strip with a diameter of 8mm using a corresponding screw extrusion device; Using specific packaging equipment, a water-soluble film is wrapped around a non-oil-permeable creep rubber surface to form a long-lasting waterproof composite material for cement concrete pavement joints.

[0025] This type of composite material has a diameter of 16mm and can be used in cuts with a width of 12mm and a depth of 3mm.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A long-lasting waterproof composite material for cement concrete pavement joints, characterized in that: The composite material consists of three parts: an inner rubber strip, a middle non-oil-permeable creep rubber, and an outer water-soluble film.

2. The long-lasting waterproof composite material for cement concrete pavement joints according to claim 1, characterized in that, The rubber strip is cylindrical and can be made of the same backing material used in the joints of airport cement concrete pavement. The purpose is to increase the volume of the composite material, as well as its strength and workability.

3. The long-lasting waterproof composite material for cement concrete pavement joints according to claim 1, characterized in that, The non-oil-permeable creep rubber is a special material, a type of elasto-plastic gel coating with high creep resistance, high adhesion, and waterproof function, made primarily of rubber.

4. The long-lasting waterproof composite material for cement concrete pavement joints according to claim 1, characterized in that, The water-soluble film is a water-soluble polymer material that is rapidly dissolved in water and is produced through a specific film-forming process. It is a new type of biodegradable green packaging material. The water-soluble film coats the non-oil-permeable creep rubber, inhibiting its high adhesion properties. After construction, it is rapidly degraded by spraying with high-temperature water, exposing the non-oil-permeable creep rubber and allowing it to adhere to the cement concrete, thus providing a waterproof effect.

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