A few months ago we received a request to develop a type SA20 sealant according to the IRAM 6838 standard for use in various bridge joints on the Highways leading to the City of Buenos Aires. The particularity of the order is that they specifically required a torsional recovery above 75% when the standard only requires 30%. We took the challenge and tested a large number of variants to achieve the product that we industrially scaled.

We managed to make the first shipment last December and it was applied during January and February on the Autopistas del Oeste viaducts with excellent performance, solving a problem for the contractor who met the deadlines and quality required by the concessionaire.

We invite you to learn more and see photos of the experience.

SA20 sealant is designed for highly technically demanding applications in wide, high-traffic bridge joints designed to respond to severe stresses and demanding weather conditions, especially in road infrastructure and bridges.

It is characterized by its high elasticity along with adhesion and durability, offering superior behavior against the movements of structures and high resistance to weathering. Its formulation allows us to achieve performance levels that exceed the requirements established by the IRAM 6838 standard, particularly with regard to elastic recovery.

Among its main benefits are:

• High elastic torsional recovery, greater than 75%, which improves behavior against deformations.
• Softening point above 100°C, suitable for hot climates.
• Excellent adhesion and resistance, even in wide joints and conditions of intensive use.

These characteristics make SA20 a solution especially suitable for sealing joints in viaducts such as those on the Accesses to Buenos Aires, Argentina. The development and export of this technology positions our products in the region, providing greater durability and reliability in works that require high performance standards.