Bituminized Expansion Joint Filler Boards

Construction of concrete roads, runways, floor and roof slabs of buildings, involves casting of concrete in slab orm, which leads to construction joints. Provision must be made to accommodate the expansion and contraction at these joints which occurs with seasonal variations in temperature. Our Bitumen Impregnated Expansion Joint Fillers Boards display excellent resistance to compression, with outstanding recovery characteristics. Provision of these boards in the joints permits free movement of the concrete slabs. This prevents damage to the slabs besides providing waterproofing and resisting entry of foreign matter into the joints.

It is a low density high quality fibre board which is cellular in nature, securely bonded together and uniformly saturated with Bituminous Compound. Impregnation with Bituminous Compound makes it durable and water proof. Cellular nature provides compressible properties and ability to recover after compression load is released; conforming to Indian as well as international technical specifications. It bears normal structural movements without breaking or cracking. It ensures sealing of joints as no gap exists between the joint spaces. The fillers are environment friendly as opposed to the environment destroying thermocol /plastic expansion joint filler.

Features Meets worldwide technical specifications IS: 1838 ASTM: D.1751 BS: 1142

Excellent resiliency

Unaffected by temperature extremes

Excellent dimensional tolerances

Non extruding

Compression to 50% thickness in the initial state:- Recovery is 80/84%

Weathering and compression to 50% thickness: – Recovery is 70/76%. Extrusion: No effect (0.75 mm)

Low moisture absorption due to bitumen impregnation. Standard Bitumen content 10-20-35%. Other possibilities upon bulk orders

Cuts cleanly

Uses Preserves life and evenness of the slab

Prevents seepage of surface water through the joints and ingress of water or dirt down the joint

Relieves stress developed due to temperature, shrin kage, creep, relaxation, variation, vibration etc.

Relieves compressive stresses which develop when concrete expands in horizontal, vertical or inclined directions

Prevents the intrusion of foreign material into the joint which would prevent the joint from working

Useful in all types of concrete construction in both interior and exterior

Application Concrete expansion: sidewalk, retaining walls, patios, curbs and gutters, airport runways.

Concrete isolation joints: bridge approaches, highway interchanges, dams, concrete abutments

Header plate sealer.

Sill sealer.

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