High-Strength Durable Grout "Hybrid Silica" (Suspension Type Injection Material)
Hybrid silica / Hybrid silica GE
Corresponding to permanent reinforcement of the foundation and high-strength reinforcement of the excavated ground. Demonstrated 19 years of aging consolidation in large-scale outdoor injection tests!
The "Hybrid Silica Series" is a groundbreaking suspension-type permanent grout developed as a result of long-term durability research on liquid injection conducted through industry-academia collaboration since 1981, excelling in strength and durability. Over 30 years of permanent performance verification studies and large-scale field injection tests combined with injection methods have been conducted to demonstrate permeability and long-term solidification properties, and the results were recognized, receiving the Technical Development Award from the Japanese Geotechnical Society in 2002 for "Permanent Grout and Injection Technology" (Yonekura, Shimada). This brought a qualitative shift to the field of liquid injection methods, which had primarily focused on temporary construction, expanding its application to permanent construction purposes. Long-term durability verification tests have continued, and in 2018, the long-term solidification properties were confirmed after 19 years following large-scale field tests. 【Feature 1】 - It is an ultra-fine particle composite silica grout, classified as an inorganic suspension-type grout. - A wide range of gel times can be set, from rapid-setting formulations to warm-setting formulations. - The gel maintains strength over the long term and has minimal volume change, making it excellent in long-term durability. - Hybrid silica consists of ultra-fine suspended silica with an average particle size of 3.5 μm and solution-type silica, making it suitable for permeation injection into sand layers. - Seawater can be used as mixing water. (See Feature 2)
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**Features 2** - The permeable solidified body exhibits strength comparable to that of solidified bodies produced by high-pressure injection methods. - All materials used are environmentally friendly injection materials. **Applicable Methods** - Ultra-multipoint injection method - Expander method - Multi-strainer method - Multi-packer method - Double-packer method - Dual-tube composite injection method, etc. **Completion of the Injection Test Center** - At the established injection test center, pre-mixing tests are conducted using soil samples taken from the site. By adding insights gained from years of collaborative research between industry and academia, as well as numerous construction achievements, we provide a higher level of reliable quality to contractors and stakeholders. **Safety** The materials used are composed of inorganic substances and comply with the "Interim Guidelines for Construction Work Related to Chemical Injection (Ministry of Construction: July 10, 1974)," containing no highly toxic substances, hazardous materials, or heavy metals. There are also no issues related to BOD and COD concerning the surrounding ground and groundwater.
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Applications/Examples of results
Over 800 construction achievements using hybrid silica 【Main construction examples by application】 ■ High-strength permanent reinforcement of foundations and liquefaction prevention - Bridge foundations - Building foundations - Track bed reinforcement - Embankment and roadbed reinforcement - Settlement prevention and jacking up ■ High-strength reinforcement and permanent water stopping of excavated ground - Shield arrival and launch shafts - Shield reaction sections - Strengthening and permanent reinforcement of tunnel excavation ground, settlement prevention - Strengthening of open-cut ground (base injection, excavation back, reinforcement of adjacent foundations and surrounding areas) - Protection of buried objects - Reinforcement of retaining wall defects - Increase in passive earth pressure on retaining walls ■ Construction of water barriers, leakage prevention, and reinforcement of riverbanks *For catalogs and technical materials that include construction examples and safety information, please request them through the inquiry form on our company website.
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Company information
Since its establishment in 1969, Kyoka Soil Engineering has embraced the three keywords of Creativity, Challenge, and Collaboration, under the corporate philosophy of "Continuity is Strength." We have been committed to technological innovation and the creation of new markets in the field of ground reinforcement through collaborative research with academia and joint research across different industries. Our strengths lie in our ability to plan and develop cutting-edge technologies in the field of ground improvement and reinforcement, as well as our capability to communicate these technologies to the market through our ground injection development mechanisms. We are determined to advance our efforts towards social contribution through the various intellectual properties we possess.
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