technical knowledge

The expansion joints of the comb plate are generally distributed at both ends of the long-span bridge to ensure the free expansion of the beam. It is mainly composed of expansion device (including two large and small comb shaped steel plates and stainless steel slide plates), high-strength anchor bolt, waterproof rubber layer and anchor end concrete. Among them, the expansion joint of comb plate bridge is designed to adapt to the characteristics of high-speed, heavy load, durability and convenient maintenance. The expansion joint device of comb plate bridge has the "five prevention" functions of anti noise, anti sitting, anti-skid, anti-corrosion and waterproof. 1. The comb plate expansion joint device is mainly composed of: comb steel plate, stainless steel sliding plate, rubber waterproof layer

2024/06/22 16:26:16

The steel edge rubber waterstop is a composite composed of general extensible rubber and galvanized steel edges on both sides. The rubber section in the middle is compressed or stretched between the concrete deformation joints to seal the waterstop. The middle hole type steel edge belongs to the middle buried type, which is applied to expansion joints, and the middle flat type is applied to construction joints. The cross section of the steel edge rubber waterstop adopts a non equal thickness structure, which is divided into a strong area and a waterproof area, so that the force on each part is uniform and reasonable. The long wall of the expansion hole is flat, and the plate mold clamping contact surface is large during construction, which is not easy to dislocate; The steel plate shall be connected with the reinforcement through additional installation holes, which shall be firmly fixed

2024/06/21 08:19:57

The function of water expandable waterstop is a long strip installed to prevent water leakage, flow and diffusion. The water expandable waterstop forms a water blocking barrier, which is generally used for construction joints or post cast strips at waterproof parts or at pipe through wall panels. It has been widely used in building engineering, bridge engineering, underground buildings, water conservancy projects and other concrete construction joints to prevent leakage materials, which can solve the leakage problems of concrete construction joints and reserved joints, and is simple and convenient to use. The installation position of water swelling waterstop is in the project. Install rubber waterstop or steel edge rubber waterstop plus a water swelling waterstop to form the internal waterproof of the structure

2024/06/20 07:54:14

The indirect expression of this kind of stability on the organ shield is to ensure that the initial shape can be restored. Therefore, all organ protective covers can be used vertically or horizontally, and can withstand low temperature. The telescopic dust cover ensures safe operation and no music. Another unique feature of the rubber expansion joint of organ type guardrail is that it can be compressed to reach the request of narrow space for modern machines through the application of raw materials with small thickness. While it provides practical cover for the machine tool, the organ type telescopic dust cover also adds more visual beauty to the machine tool and promotes the overall value of the machine tool. Canvas soft joint rare shape

2024/06/19 10:51:10

The waterstop is generally used for waterproofing of underground works. The waterstop is divided into waterstop and water swelling rubber. 1、 The waterstop uses the high elasticity and compression deformation of rubber to produce elastic deformation under various loads, so as to play a tight seal, effectively prevent water leakage and seepage of building components, and play the role of shock absorption and buffer. In many engineering buildings, there are certain expansion requirements between civil engineering, water and soil structures, and there are also problems such as waterproof and shockproof, Therefore, the adoption and installation of rubber waterstop is an effective means to solve the above problems. It is mainly used in the permanent deformation joints that must be set when the concrete is poured in situ, such as canals, tunnels, etc

2024/06/18 08:31:10

Type 651 rubber waterstop is mainly used for waterproof and anti-seepage work during concrete pouring. Its main function is to ensure the waterproof performance of concrete structures. Because of its excellent waterproof and anti-seepage performance, this waterstop is widely used in various construction projects, such as basements, pools, tunnels, bridges, dams, etc. In these projects, 651 rubber waterstop plays a vital role, providing a solid guarantee for the waterproof safety of the project. In the basement project, because the basement is always in a humid environment, the requirements for waterproofing are very high. The 651 rubber waterstop can effectively prevent groundwater

2024/06/17 11:14:02

LNR horizontal force dispersion rubber bearing is a new type of plate rubber bearing with excellent performance, which is developed based on the working principle of "horizontal force dispersion". It has made great improvement and innovation on the basis of the conventional laminated rubber bearing, which can meet the larger shear displacement, and is effectively connected with the main beam and pier abutment to ensure the effective transmission of force from the bridge superstructure to the substructure, so as to realize the horizontal force dispersion of the bridge substructure, and each pier cooperatively resists the horizontal force. It can meet the requirements of large shear displacement under the action of temperature change and earthquake, and the integrity of the bearing is good. According to the structure, it can be divided into LNR (G) fixed type and LNR (H) sliding type

2024/06/13 15:42:17

According to the expansion ratio, it can be divided into: PZ250, PZ300, PZ400 The main difference of PZ500 water expandable waterstop is that it can be expanded to several times of the original waterstop. During the construction of basement in some coastal cities, the product type water expandable waterstop with an expansion ratio of 6 times can be selected for construction. Because of the regional particularity, the seawater salt content is high, so the expansion rate will be reduced, The actual expansion ratio of the product type water expandable waterstop with 6 times of expansion ratio can reach more than 4.5 times. Now let's introduce one

2024/06/07 15:12:07

The circular plate rubber bearing is the same as the rectangular plate rubber bearing, but its shape is different. The bearing is circular. The circular plate rubber bearing is vulcanized by multi-layer rubber sheets and steel plates. It has good elasticity, rigid stiffness and can meet the horizontal displacement of the upper structure. The circular rubber bearing is not only technically excellent, but also has the advantages of simple structure, low price and easy replacement. The installation and construction method of circular plate rubber bearing: 1. Keep the top of the pier clean, and there shall be no uneven things, otherwise the bearing will be placed unevenly. 2. When installing the bearing, the center of the rubber bearing shall be consistent with the center of the bearing pad stone to ensure that the bearing is accurate

2024/06/04 09:44:27

The quality of two-component polysulfide sealant mainly depends on the following properties: 1. Breaking strength (breaking force/cross sectional area): the force applied to the rubber elastomer after the sealant is cured when it breaks. After the national standard sealant is cured, it is elastic, soft, with large tensile force and high elastic recovery rate. The rubber elastomer has no cracks. 2、 Bonding strength (pulling force/bonding area, except for damage of base material): refers to the bonding force between two-component polysulfide sealant and concrete. After curing, the national standard sealant is not easy to peel off from the concrete, and non-standard sealant is easy to fall off by itself. 3、 Elongation at break (length at break/original length): two-component

2024/06/03 17:26:56