アールシージージャパン List of Products and Services

"RCG Inner Silica" (formerly known as RCG Inner Seal) is a product that protects the surface of concrete and extends its lifespan through the physical actions and chemical reactions of particle colloids. It is effective in protecting the surface of concrete and suppressing internal rebar corrosion, making it suitable for application in bridges, tunnels, concrete foundations, and water tanks. The "RCG Inner Silica α Method," which utilizes this product, ensures reliable construction verification (preventing missed applications) by mixing and applying a colorant with fading properties for construction confirmation, thereby improving construction quality. [Effects and Benefits] ■ Improved waterproofing ■ Suppression of freeze damage and salt damage ■ Enhanced abrasion resistance ■ Crack sealing ■ Suppression of carbonation ■ Effective even in concrete with reduced deteriorated alkaline components *For more details, please refer to the PDF document or feel free to contact us.

The "RCG Inner Silica α Method" (formerly known as RCG Inner Seal α) simplifies the confirmation of the construction area during application by using coloring, while the color fades over time after application, leaving the appearance of the concrete surface unchanged. By using coloring, it becomes possible to visually confirm the construction status and area, overcoming the challenges of verifying surface impregnation methods. 【Features】 ■ Allows visual confirmation of construction status and area through coloring ■ Fades within a few days due to sunlight and other UV exposure after confirmation ■ Returns to the original color of the concrete after fading *For more details, please refer to the external link page or feel free to contact us.

The main causes of "concrete deterioration" are the presence of capillaries (porous bodies) and the existence of pore solutions. Deterioration factors such as moisture, carbon dioxide, and chloride ions in the atmosphere infiltrate through capillaries and, using pore solutions as a medium, undergo chemical reactions and diffusion. It is important to densify the capillaries and reduce the pore solutions. In particular, pores larger than 50 nm (macro-pores) are said to be problematic as they allow for easier infiltration of deterioration factors. By applying our "Inner Coat" and "RCG Inner Silica," we can transform these macro-pores into harmless pores, thereby suppressing the infiltration of deterioration factors. *For more details, please refer to the external link page or feel free to contact us.

"RCG Inner Silica / RCG Inner Silica α" can be used for standard construction methods and for color fading verification construction methods. When a silicate-based surface impregnation material is applied to the concrete surface, it penetrates the surface layer of the concrete and reacts with calcium hydroxide to produce C-S-H gel (calcium silicate hydrate). The synergistic effect of physical action from particle colloids and chemical reactions (C-S-H gel) suppresses the intrusion of deterioration factors. 【Features】 ■ No change in appearance ■ Environmentally friendly ■ Inorganic, making it resistant to UV radiation ■ Odorless ■ Shortens construction time *For more details, please download the PDF or feel free to contact us.

We would like to introduce the mechanism of "RCG Inner Silica OC," handled by RCG Japan Co., Ltd. When a silicate-based surface infiltrating agent is applied to the surface of concrete, it penetrates the concrete surface and reacts with calcium hydroxide to produce C-S-H gel (calcium silicate hydrate). The synergistic effect of physical action from the particle colloid and the chemical reaction (C-S-H gel) suppresses the intrusion of deterioration factors. 【Properties (partial)】 ■ Main components: Particle colloid (sodium silicate, potassium silicate) ■ Appearance: (Main material) Colorless / liquid (Coloring agent) Red-purple / liquid ■ Odor: Odorless ■ Specific gravity: 1.1 or more ■ pH: 11.0 or more *For more details, please download the PDF or feel free to contact us.

We would like to introduce the overview and features of the "RCG Inner Silica OC Method" conducted by RCG Japan Co., Ltd. This method involves applying a surface impregnation material to the concrete surface, with the primary effect being the repair effect from the surface impregnation material. Additionally, there is a "supplementary method" aimed at improving the quality of the base material and inorganic surface coating materials by combining it with surface coating methods. Please feel free to consult us when you need our services. 【Properties (partial)】 ■ Main components: Particle colloid (sodium silicate, potassium silicate) ■ Appearance: (Main material) Colorless / Liquid (Coloring material) Red-purple / Liquid ■ Odor: Odorless ■ Specific gravity: 1.1 or more ■ pH: 11.0 or more *For more details, please download the PDF or feel free to contact us.