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The "Tosui CON Filling Method," suitable for measures to extend the lifespan of structures, is a construction method aimed at preserving and maintaining existing structures while maintaining landscape formation. In response to the deterioration of stone masonry and stone walls in riverbanks, waterways, and residential areas, a plant is set up on-site to inject and fill with Tosui CON (aggregate, cement, water, B.CON + S), which excels in permeability, strength, durability, and workability from joints and cracks. This helps maintain the stability of the stone masonry and suppress piping phenomena by draining water from the joints. 【Construction Example】 Purpose: Water management for existing structures in landscape areas Preservation and maintenance of openings, gaps, looseness, bulging, suction, subsidence, voids, etc. Proposal: Tosui CON Filling Method Features: - Does not compromise the landscape - Prevents erosion of backfill soil - No traffic restrictions required - No need for demolition of existing structures - No noise or vibration - Suitable for water management