Joint Fillers for weatherproofing products for Expansion Joints

Generally, expansion joints are the joints or spaces left between slabs or construction elements of the same material to facilitate expansion and contraction due to changes in ambient temperatures. While expansion joints serve their intended purpose well, they still present several aesthetic and practical concerns. All of these issues may be addressed by inserting a joint sealant or filler into the joint gap.

Joint sealants or fillers are materials that are used between two sections of concrete. These are relatively compressible materials so that it will not fail as the concrete around it grows and shrinks due to temperature changes or movement. Joint filler prevents the premature failure of the concrete structure. Therefore, the presence of joint filler or sealant is essential to the proper functioning of concrete joints.

Joint Fillers from MCT

Corrocell – Corrocell is a polyethylene non-extruding, non-absorbent joint filler board that offers support and accurate depth measurement for subsequent joint sealant materials. Most of the time, it is used to fill expansion and movement joints between concrete, brickwork, blockwork, and masonry where bituminous fiberboards are not recommended.

Corroboard BI20 – Corroboard BI20 is a bitumen-impregnated joint filler board. This material is designed as a joint filler particularly for expansion joints in concrete. Corroboard BI20 is commonly used to fill expansion and movement joints in-situ or precast concrete, especially on large civil engineering structures like bridges, tunnels and dams.

Corroseal LS – Corroseal LS is a flexible polyester cable loop sealant. It is particularly designed for use in sealing joints and grooves in concrete or asphalt pavements. Corroseal LS is supplied in pre-weighed pouring grade packs, ready for on-site mixing and use, giving consistent properties and performance.

Corroseal RB – Corroseal RB is a rubberized bitumen mastic sealant that is designed for sealing terminations in conjunction with Corroprufe bituminous waterproofing membranes. It is commonly used in dealing with non-trafficked joints subject to low movement, building & civil engineering structures like precast concrete elements, dams, reservoirs, basements and bridges and more.

Failure to properly seal or fill expansion joints may result in moisture migrating through the joint into the base and subbase and incompressible debris filling the joint, impacting adjacent slab sections. When that happens, consequent base/subbase and slab distress can result in rocking slabs and even vertical displacement at the joint.

MCT Group through Corrotech Construction Chemicals offers a wide range of joint fillers and sealants that are designed for maximum waterproofing, thermal, sound and airtightness. For a complete range of their products, visit their website at https://www.mctuae.com/