Minka enterprises limited

High damping rubber bearing，also known as  HDR bearing pad, is a kind of seismic isolation bearingsimilar with lead rubber from special rubber with excellent damping attribute and layers of steel, the high damping rubber bearing has excellent flexibility,vibration reduction ability and high restoring ability. Thus it is an important component of seismic isolation system and can effectively reduce the bridge and building structure damage caused by high damping rubber bearing itself performs the isolation function and does not need to configure other devices, so the maintenance and management cost is low.

Working principle of high damping rubber bearing

By producing large deformation and small rigidity, the high damping rubber bearing has excellent seismic effect during the the elastic stiffness of the bearing depends on its deformation degree. When the deformation is small, the stiffness will be large. The high damping rubber bearing has excellent seismic isolation function by this principle.

Characteristics of high damping rubber bearing

The hysteretic characteristic (load deformation curve) of high damping rubber bearing is full, which can play an isolation effect for wind vibration and large, medium and small earthquakes.

The high damping rubber bearing itself performs the isolation function and does not need to configure other devices, so the maintenance and management cost is low.

After a large earthquake, the high damping rubber bearing will not produce residual deformation, and the characteristic change is very small, so it does not need to be replaced.

The elastic properties and damping properties of high damping rubber bearings have little dependence on temperature, that is, they are less affected by temperature, so they are suitable for a wide range of fields.

The internal EPDM rubber is completely protected which is resistant to the ozone and ultraviolet, so it has better aging-resistant ability.

HDR high damping rubber has the same superior creep performance as natural rubber.

Applications

High damping rubber bearing is widely applied in the quake-prone areas for bridge, building and other construction structures.

Combined precision machined steel components with an elastomeric disc at the centre, highway bridge pot bearings is designed according to the projects' specific requirements. By accommodating the structure's relative displacement, these high performance bearings transfer large vertical loads. No matter the bearings are fixed, unidirectional or multidirectional, they can transfer vertical and horizontal load combinations with transverse in larger load and movements on fewer piers.

Advantages of Highway bridge pot bearing

1. The plank sliding of stainless steel plate and poly four ethylene moulded plate is used as the slip surface of the bearing. It has low friction coefficient, large bearing capacity, small deformation, wear resistance and corrosion resistance.
2. The use of sealed rubber improves the bearing capacity of the bearing and the life of the rubber, and more importantly, the bearing has flexible rotation performance and cushioning performance.
3. The rubber bearing is simple in structure, light in weight and cheap in price. It has obvious economic effect.
4. The low building height of the rubber bearing is very beneficial to the bridge design.

Culvert Balloon is a kind of cylinder bag that can expand, shrink, used to form concrete component of cavity. It is easy to be used, convenient and durable, is soft and can fold, curly, contraction when it isn't inflate, it have the enough strength to withstand the pressure of concrete when it is inflated, this is incomparable with any traditional template, it is used in reinforced concrete members, including stake roof, roof board column, beam, building, water conservancy project(shipyards slipway, dock) . Construction practice proves that culvert balloon is simple, not only save materials. And has a shape characteristics, it could be round, Oval, rectangle, vaulted, trapezoidal pipeline. etc. Also you can make a straight hole, etc. can make a building structure light, thin wall hollow .change the concrete performance have been used rigid characteristic template situation.

Features of culvert balloons:

1. Easy to use and rubber airbag is an inflatable product which can be poured into hollow components of various finished products, according to different construction projects.
2. Good aging of synthetic rubber, natural rubber and fiber reinforcement after vulcanization, culvert balloons not only have good anti-expansion strength, but also elasticity and flexibility. It can be used in construction under various working conditions.
3. Necessary conditions for the lightweight to the use of rubber airbags to reduce the weight of the upper structure of the building and bridge, the pile foundation can be shortened, the span can be increased, and the on-site construction is simple.
4. Suitable for a wide range of material of culvert balloons will not change in the range of -10°C to +90°C.

Applications of culvert balloons:

1. Concrete pouring for highway bridge culvert 
2. Sewage discharge projects
3. Tunnel Bridge Side ditch construction.
4. Architectural engineering.
5. Irrigation works.
6. Piles, roof trusses, roof plate columns, beams, etc.

Welcome to select your interested products and contact us if you have any questions!

Rubber wall bumperalso known as heavy duty rubber bumper or rubber wall guards can be installed to wall, concrete or brick, absorbing and deflecting impact from wheeled traffic to give wall protection and reduce maintenance costs. If you are looking for best quality rubber wall guards and various rubber products with wholesale price, welcome to contact Minka Enterprises for detailed information! 

Features of rubber wall bumper:

1. Convenient installation:Along with fixing bolts, it's easy for the operator to attach the product onto the wall via pre-drilled fixing holes.    
2. All-round and full protection:The extruded EPDM rubber can fully protect vehicles and the walls,several units can be installed together to provide

better protection.

3. Durable for usage:Made from black EPDM rubber, the rubber wall guid has long service life span.
4. Excellent weather resistance, impact resistance and stain proof.

Applications of Rubber wall bumper

Rubber wall and corner profiles have been developed to offer heavy duty protection against severe damage caused by wheeled traffic, such as trolleys and carts. Suitable for the protection of walls, corners and columns in areas such as manufacturing, warehousing and loading bays, back of house retail, hospital service corridors and car parks.

Pvc waterstop is designed to provided an overall sealing system for the movable joints and construction joints in cast-in-place concrete. such joints usually exist in the following types of buildings.

Water storage building:

Reservoirs, water towers and sewage towers

Dams, culverts, canals and spillways

The swimming pool

The berm area around the storage tank

Waterproof building:

Basement and underground parking

Tunnels and underpasses

Abutment and retaining walls

Roof deck and podium area

Functional principle of pvc waterstop:

1. Dumbbell shaped waterstop is poured through concrete and embedded in the edge of adjacent concrete, and the concrete slab acts as a baffle. When the joint is opened due to dry shrinkage or other displacement, the edge bulge on the section of the waterstop will play an anchoring role. Therefore, the transverse tension of the waterstop will produce a sealing effect on the inner surface of the edge bulge.
2. After the section of the waterstop becomes complex, its surface area will be greatly increased, which will have a greater organizational effect on the water leakage of the waterstop section, and the complex path formed on the section will make it difficult for water to pass through.