It demonstrates outstanding long-term durability, safety, and convenience. It is suitable for full-scale temporary injection work.
The "Hardlizer Seven" includes the instant-setting type "Hardlizer Seven S" and the slow-setting type "Hardlizer Seven L," making it suitable for all types of injection methods. The "Hardlizer Seven" is a durable inorganic solution type silica sol grout, which was developed in the early 1970s and has made significant advancements as a result of years of research and development, boasting a track record of 50,000 construction cases. The well-known trademark "Silica Sol" in the field of chemical injection refers to the injection material based on non-alkaline water glass obtained by neutralizing the alkalinity of water glass with acid. Notably, research on the durability of chemical injection conducted at the Toyo University Institute of Industrial Technology's Yokokura Laboratory, which began in 1982, clarified the long-term durability of silica sol grout, and this was demonstrated by excavation surveys at construction sites from 17 years ago. Additionally, large-scale outdoor tests have confirmed the permeability and solidification properties after 19 years. 【Feature 1】 1. Excellent applicability: The gel time can range from instant-setting to slow-setting, allowing it to be applied to all types of injection methods. 2. Excellent solidification: It excels in solidification below the groundwater level, ensuring that all injected material solidifies in the soil. It also has excellent water-stopping properties... (continues to Feature 2)
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【Features 2】 2. Excellent solidification: It has superior solidification properties below the groundwater level, and all injected materials in the soil will solidify completely. It also has excellent water-stopping properties, solidifying normally regardless of the presence of seawater or organic matter. 3. High strength and durability: The solidified body exhibits high strength and excellent long-term durability (according to joint research between industry and academia). 4. Maintains a neutral zone: There is almost no leaching of silica from the solidified material, which itself remains nearly neutral, resulting in little change in the pH of the groundwater. 5. Protects concrete: It has a concrete protection function. (Please refer to the masking silica technical documentation "Concrete Protection Function by Masking Silica" and "Masking Separate Method and Liquefaction Countermeasure Related Technologies.") 6. Emphasis on environmental conservation: Safety for living organisms has been confirmed. 【Safety】 All materials used are inorganic, and the pH of the solidified material is close to neutral, so there are no issues regarding COD, BOD, or pH concerning the surrounding ground and groundwater. Furthermore, analysis results of heavy metals indicate that the injected material is extremely safe. 【Applicable Construction Methods】 - Ultra-multipoint injection method - Expacker method - Multi-packer method - Double-packer method - Double-pipe composite injection method, etc.
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Applications/Examples of results
Over 2,200 construction achievements by Hardlizer Seven [Main Applications] - Ground reinforcement - Water stopping - Displacement suppression (existing structures, railways, subways) - Soil pressure reduction - Back of retaining walls - Strengthening of excavated ground - Shield arrival and launch shafts - Shield reaction parts - Strengthening of open-cut ground (base injection, back of excavation, reinforcement of adjacent foundations and surrounding areas) - Reinforcement of missing parts of retaining walls - Prevention of subsidence in surrounding ground due to excavation *Please request catalogs and technical materials that include case studies and safety information through the inquiry form on our company website.
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.
![[Column] Comparison of Other Construction Methods and Processes / The Reason for the Significantly Faster Construction Time](https://image.www.ipros.com/public/product/image/2115299/IPROS240945420749991330.jpg?w=280&h=280)
