What is Thorma joint?
What is Thorma joint?
Thorma-Joint is the original asphaltic plug expansion joint system. Introduced to. the US market by DSA, Ltd. in the late 1980’s, it continues to be first choice. among bridge engineers seeking a cost effective reliable joint system for low movement structures.
What is elastomeric expansion joint?
They are specially engineered to handle movements due to thermal expansion, vibrations of pumps, and misalignments due to installation tolerances, while also being resistant to the process conditions and the external influences of the application. …
What is a modular expansion joint?
The Modular Expansion Joint System (MEJS) is a mechanical device installed in bridge expansion joint openings. The primary function of the MEJS is to permit vehicle traffic to travel smoothly across large expansion joint openings. The MEJS is normally used for expansion joints with a movement range exceeding 75 mm.
What is elastomeric joint sealant?
According to ASTM C 920, Standard Specification for Elastomeric Joint Sealants, sealants are “cold-applied elastomeric single or multi-component materials used for sealing, caulking, or glazing operations on buildings, plazas, and decks for vehicular or pedestrian use, and types of construction other than highway and …
What is the purpose of expansion joint?
Expansion Joints are a bellows type device. Expansion joints are used to absorb thermal expansion. They can also be used to absorb contraction in cryogenic lines and to reduce vibration in piping systems. Materials of construction for the bellows can be stainless steel or rubber or even a composite material.
How do expansion joints work?
The thermal expansion of a pipe is absorbed by the bellows of the expansion joint that is able to move according to different directions. Axial movement: the expansion is absorbed along the longitudinal axis of the pipe. Lateral movement: the expansion is absorbed along the transverse axis of the pipe.
What is strip seal expansion joint?
Strip Seal Expansion Joint: is a mechanical device adapted for sealing an elongated gap formed between two adjacent road slab sections by providing a continuous support for vehicles crossing the gap while allowing the desired temperature responsive movement of the road slab sections.
What is the importance of expansion joints in concrete or steel road?
The importance of expansion joints on concrete bridge deck is that they are designed to allow for continuous traffic between structures while accommodating movement, shrinkage and temperature variations on reinforced and prestressed concrete, composite and steel structures.
