Contributing to the preventive maintenance and longevity of concrete structures, both new and existing. The origin of the L-OSMO series, which started sales in 2005. (Formerly OSMO)
L-OSMO Reaction Type SG is a reactive silicate-based surface impregnation material that contributes to the preventive maintenance and longevity of concrete structures. (Contains lithium silicate, sodium silicate, and potassium silicate) By densifying the surface layer of concrete and sealing cracks of 0.2mm or less, it suppresses the progression of deterioration and reduces lifecycle costs. It has reactivity with calcium hydroxide, allowing for long-term modification effects. Although it is a reactive type, it still provides a modification effect on concrete that has undergone carbonation, although not as effective as "L-OSMO Solidified Type KK." There is no change in appearance after application, and any deformation of the concrete can be visually confirmed. Reapplication is easy, and it can be used in conjunction with other methods. Preventive maintenance and longevity measures can be achieved on a low budget. No special qualifications are required, and the application can be done quickly and easily. It is also effective in areas with low applicability of silane-based surface impregnation materials, such as water accumulation points and cracked areas. *Due to the increase in product lineup in 2023, the name has been changed from "OSMO" to "L-OSMO Reaction Type SG."
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basic information
【Product Overview】 (Civil Engineering Society Standard JSCE-K572 Test Data) ■ Type: Reactive ■ Main Component: Silicate Mixed Type (Contains Lithium Silicate, Sodium Silicate, Potassium Silicate) ■ Number of Coats: 2 ■ Standard Application Amount: 200g/m² ■ Dry Solid Content Ratio: 16.2% ■ Dry Solid Amount: 32g/m² ■ Density (Specific Gravity): 1.100–1.180g/cm³ ■ pH Value: 12.0–12.8 ■ Color: Colorless and Transparent ■ Penetration Depth: 6mm ■ Neutralization Depth Suppression Rate: 24% ■ Chloride Ion Penetration Depth Suppression Rate: 25% ■ Water Permeability Suppression Rate: 62% ■ Water Absorption Suppression Rate: 18% ■ Mass Loss Suppression Rate: 43% ■ Crack Water Permeability Suppression Rate: 88% ■ Pressurized Water Permeability Suppression Rate: 14% ■ Water Permeability Suppression Rate in Neutralized Concrete: 33% ■ Construction and Curing: Wet Condition ■ Storage: Environment avoiding direct sunlight at 5–40°C ■ Patent: Patent No. 4484872 ■ NETIS: HK-070015-V (Discontinued Technology) *For more details, please refer to the PDF document or feel free to contact us.*
Price information
Design price: Material and labor 3,500 yen/m2 (Construction price book page 832, Estimation data published price version page 266)
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Applications/Examples of results
- Preventive maintenance and longevity of concrete structures - Please utilize it for measures against carbonation, salt damage, freeze damage, and combined deterioration. 【Examples of applicable structures】 Bridges, tunnels, snow shelters, box culverts, waterways, sluice gates, water purification plants, concrete paved roads, multi-story parking lots, public buildings, airport facilities, port facilities, concrete precast products, etc. - Effective for areas exposed to water and cracked sections The effectiveness of modification has been confirmed through pressurized permeability tests and crack permeability tests. 【Examples of water exposure on structures】 Beam support areas, electric pole support beams, railing coverings, cantilever slabs, floor slab crack areas, bridge abutment beam support areas, tunnel entrances, culvert box side surfaces. - Improvement of the quality of inorganic surface coatings A method of applying 【L-OSMO reactive type SG】 on the surface of polymer cement mortar. - Reinforcement of joint areas A method of applying 【L-OSMO reactive type SG】 on the joint surfaces and the outer periphery of the joint areas. *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Rinac OSMO Co., Ltd. is a leading company that has developed a solidified lithium silicate-based concrete surface impregnation agent, 【L-OSMO Solidified Type KK】, which has been confirmed to be effective with neutralized concrete for the first time in Japan. (Patent No. 4484872) 【L-OSMO Solidified Type KK】 is also a pioneer in the field of 【Mother Material Concrete Modifier】. With the increasing importance of infrastructure maintenance, we have developed a solidified silicate-based surface impregnation agent that can be combined with various surface protection materials. (Patent No. 7311215) The unique feature of densifying and modifying the concrete surface layer (a few millimeters from the surface) prolongs the lifespan of concrete structures. 【August 2023 Company Name and Product Name Change】 Rinac Yachiyo Co., Ltd. → Rinac OSMO Co., Ltd. OSMO Series → L-OSMO Series OSMO → L-OSMO Reactive Type SG OSMO-XP → L-OSMO Reactive Type XP OSMO-KK → L-OSMO Solidified Type KK