The use of a building or civil engineering structure may change throughout  the course of its service life, as for example its whole function can  change, loads can increase and/or higher building standards are required and the structure must be made compliant. Sika provides fully  comprehensive solutions with complete systems for all kinds of  structural strengthening and improvement. Whether increasing the bending, shear or impact resistance, tested and proven Sika systems are available for use on reinforced concrete, steel, wood and masonry load-bearing structures.