Expansion joints

KIAN Limited have a compliance Expansion Joint manufacturing factory first ever in Bangladesh. We have been working for the bridge expansion joint manufacturing, supply, replacement as well as bridge repair and maintenance. Kian limited has completed some remarkable mega projects in Bangladesh (Dhaka MRT Line-6, Jamuna Railway Bridge (BR), Tista 2nd Bridge (LGED), N8 express way (RHD) as well as other local bridge projects.

Expansion joints ensure a continuous surface for traffic on structures regardless of the deformations induced by temperature conditions, wind, traffic, or any other effect while maintaining the water tightness of the rest of concrete or steel deck. Expansion joints provide a continuous road surface to all users of a road or railway as well as allowing every displacement or rotation expected at the structure.

Strip seal Expansion Joint

Simple Expansion Joint, is a mechanically sealed joint with an extruded elastomeric seal retained by various options of profiled steel extrusions, often referred to as edge beams or steel rails. The elastomeric seal, usually named strip seal, is mechanically locked into the cavity of steel extrusions to prevent the ingress of water or debris. At the side of steel extrusions, anchorage is affixed to be attached to the structure elements by a typical method of pouring high-strength concrete mortar, or other elastomeric mortar. This armored joint system is designed to cater for movement ranging from 0mm to 100mm, while movements and rotations in all three axes are possible without any restraints.

Finger Expansion Joint

High performance steel expansion joint that allows the absorption of deck movements while bearing the traffic loads and avoiding traffic disturbances. The steel fingers provide a robust surface for traffic with low noise, and can be tailored to allow a great variety of movements.

Modular Expansion Joint

High performance steel joints where the total movement gap is divided into individual gaps or modules. Expansion/ contraction is ensured by a rubber V- shaped profile linking two steel center beams. Center beams ensure bearing capacity towards traffic loads, while rubber profiles ensure water tightness and movement capacity.

Rubber Expansion Joint

High performance rubber expansion joint that allows absorption of deck movements and water evacuation while bearing the traffic loads and avoiding the traffic disturbances. The continuous rubber surface (with or without metal plates) ensures water tightness at the joint level, without any need for additional water removal devices before surface level. Thus, rubber expansion joints can be installed on the thinnest structural slabs and bridge decks.

Pedestrian Expansion Joint

Steel plate expansion joint, It consists on a mechanically sealed steel plate expansion joint designed for pedestrian traffic on bridge carb, as well as pedestrian bridges. It’s formed by a continuous steel plate, allowing a safer surface for the users, which slides above a second steel plate linked to the carb surface. An elastomeric seal is mechanically locked into the cavity of steel extrusions to prevent the ingress of water or debris. Below the steel plates, anchorage is affixed to be attached to the structure elements by a typical method of pouring high-strength concrete mortar, or other elastomeric mortar. This armored joint system is designed to cater for movement matching those of the main expansion joints, with an exterior surface conveniently treated to prevent trips and slips by the users.

Architectural Expansion Joint

KIAN offer comprehensive ranges of durable Expansion Joint Solutions for a wide array of applications including commercial centers, shopping malls, railway stations, airports, bridges, schools, hospitals, and several other areas of application.
Our range of Expansion Joint Solutions are designed to safely absorb the heat-induced expansion and contraction of concrete slabs, to absorb vibration, and to allow movement due to ground settlement or earthquakes.
Our variety of expansion joints includes profiles for walls and floor, for pedestrian as well as heavy loads traffic, for seismic movements, and several other uses. KIAN Expansion Joint Solutions include aluminum profiles, rubber profiles, and a combination of aluminum profiles with rubber inserts.
KIAN Expansion Joint Solutions are designed to conceal areas of structural movement. Concrete Slabs are designed to move due of pressures from long-term shrinkage, thermal expansion, contraction of the structure and seismic activity.
Our floor expansion joint systems are suitable for applications with joint openings of several width, and up to 400 mm. Our Expansion Joint Solutions require minimum maintenance works throughout the year.

Railway Bridge abetment expansion joint

Railway bridges have different requirements for expansion joints than road bridges. Mat expansion joints are not driven over their surface directly and serve to seal the structure gap in a watertight manner while simultaneously absorbing the displacement and rotation of the superstructure. The traffic loads are usually transferred via the ballast bed.