Wednesday, February 08, 2017

Material used in Expansion Joint

Material used in Expansion Joint

1. Joint filler:

It is a strip of compressible material used to form & fill the expansion joints in structures. The main functions of the joint filler are to permit the components of the joint to expand without developing compressive stresses as a result of thermal or other changes. It is produced from a variety of material such as bitumen , natural rubber, bitumen containing cellular materials etc.

2. Sealing Compound shall satisfy the following requirements:

a) To seal the joint against the passage of water.
b) To prevent the ingress of grit or other foreign matter.

3. Water bar:

Its function is to seal the joint against water penetration. Water bar may be of natural & synthetic rubber, PVC etc.