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The "Eco-GEO Method" that we implement is a ground improvement technology that allows for stable quality crushed stone ground improvement work even on small sites. By using "EG Casing," we prevent the collapse of the borehole walls, and through the crushed stone compaction method, we ensure stable quality without relying on the operator's skill, enabling speedy construction with simple operations. Additionally, we offer two types: the "Dewatering Type," which discharges excavated soil, and the "No Dewatering Type," which does not produce any excavated soil. 【Features】 ■ No waste is generated ■ Since no artificial materials are left underground, it is less likely to decrease the land's asset value ■ Strength does not deteriorate ■ Measures against liquefaction during earthquakes ■ Two types available: dewatering and no dewatering *For more details, please download the PDF or feel free to contact us.

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The "Eco-GEO Method" is a ground improvement technology that uses only natural crushed stone as a material. No waste is generated during construction, and compared to cement and steel, it is possible to significantly reduce CO2 emissions. Additionally, curing time, water, post-construction testing, and pile head treatment are not required. Therefore, foundation work can begin immediately after construction is completed. 【Features】 ■ Obtained architectural technology performance certification ■ Shorter design length compared to conventional methods, making it economical ■ Zero waste and zero leftover soil ■ No need for curing, water, post-construction testing, or pile head treatment *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our construction achievements of the "Eco Geo Method" for residential crushed stone ground improvement work. It has been adopted as a drainage measure for embankments on highways. Please feel free to contact us when you need our services. 【Case Overview】 ■ Drainage measures for embankments on highways *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where our residential crushed stone ground improvement work, "Eco Geo Method," was adopted as a liquefaction countermeasure in public works in the liquefaction-affected areas of the Great East Japan Earthquake. In conventional technology, the construction of crushed stone piles required for liquefaction countermeasures was difficult without large machinery. Our technology enables the construction of "homogeneous crushed stone piles," which are necessary for liquefaction countermeasures, through "casing." In the future, this can be applied not only to the recovery and reconstruction of disaster-stricken areas but also to liquefaction countermeasure works for residential and public projects nationwide. [Case Overview] ■ Project: Liquefaction countermeasure work for public housing ■ Project Details: Crushed stone pile construction depth of approximately 4.0m, quantity of about 750 piles ■ Client: Abiko City, Chiba Prefecture ■ Construction Period: December 2013 to January 2014 (approximately 1 month) *For more details, please download the PDF or feel free to contact us.

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We would like to introduce a case where the Eco-GEO method was adopted for ground improvement in caisson construction. In caisson ground improvement work, ground improvement using gravel piles is the standard specification. Due to the small size of the machinery (width 2.0m, weight approximately 11t), it allows for parallel work with other construction activities, leading to a reduction in construction time, which is why this method was adopted. Please feel free to contact us when you need our services. 【Project Overview】 ■ Construction Location: Within Saitama Prefecture ■ Design and Construction Depth: 4.76m ■ Number of Design and Construction: 292 piles *For more details, please download the PDF or feel free to contact us.

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The Eco-GEO method is a ground improvement technology developed based on joint research between Onabe Corporation and Mie University, which uses only crushed stone. It is a ground improvement technology that has a low environmental impact and a low possibility of decreasing land value. This technology has been recognized for its lower CO2 emissions and lack of waste generation compared to conventional methods, and it received an Excellence Award at the 49th Environmental Awards. 【Overview of the Environmental Awards】 ■ Organizer: National Institute for Environmental Studies, Nikkan Kogyo Shimbun ■ Support: Ministry of the Environment ■ Awardees: Onabe Corporation, Mie University, Mie TLO Corporation *For more details, please download the PDF or feel free to contact us.

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The Eco-GEO method is a ground improvement technology developed based on joint research between Onabe Corporation and Mie University, using only crushed stone. It is a ground improvement technology that has a low environmental impact on the Earth and a low possibility of decreasing land value. In this technology, crushed stone remains underground, but based on the evaluation from the joint research paper by Onabe Corporation and Mie University, it was assessed by real estate appraisers as having a "low possibility of decreasing land value." 【Features of the Eco-GEO Method】 ■ Ground improvement technology using only crushed stone ■ Low environmental impact on the Earth ■ Low possibility of decreasing land value *For more details, please download the PDF or feel free to contact us.

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Our company proposes the "Eco Geo Method" for residential crushed stone ground improvement work to our clients. When the ground for building a house is weak and requires ground improvement work, it is important to communicate to the clients "multiple ground improvement methods that can be used for that ground," "the advantages and disadvantages of each method," and "the impact on land value and the global environment." By doing so, clients can choose ground improvement work with peace of mind. Additionally, the construction company can reduce troubles caused by insufficient explanations, leading to an improved trust relationship with clients. [Features] ■ Clients can choose ground improvement work with confidence. ■ Reduces troubles caused by insufficient explanations and enhances trust relationships with clients. *For more details, please download the PDF or feel free to contact us.

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As efforts towards the SDGs are being demanded worldwide, measures against global warming and waste reduction are urgent issues. In ground improvement work, consideration for the global environment is also required. Ground improvement work varies in CO2 emissions and the materials left underground depending on the materials and methods used. Additionally, attention must be paid to soil contamination. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.

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If there are items buried underground due to ground improvement work or if the soil is contaminated, the costs for their removal may be deducted from the land price, potentially leading to a decrease in land value. Land is an important asset for individuals and corporations. Ground improvement work is crucial for supporting buildings, but it may also impact the value of the land in the future. Recently, more people are considering future removal when conducting ground improvement work. *For more details, you can view the related links. Please feel free to contact us for more information.*

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We would like to introduce the ground warranty companies for our residential crushed stone ground improvement work, "Eco Geo Method." Ground warranty is important in case of any sinking accidents. This method can receive guarantees from all major ground warranty companies in Japan. Please feel free to contact us when you need our services. 【Ground Warranty Companies (Excerpt)】 ■ JAPAN HOME SHIELD ■ House Warranty Association ■ GIR Co., Ltd. ■ Ground Network ■ ZAIJU BIZ *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our residential crushed stone ground improvement work, the "Eco Geo Method." When the holes excavated during construction collapse and soil mixes with the crushed stone, the strength of the crushed stone columns decreases. Our method successfully prevents this by using a uniquely developed EG casing. Even in weak ground with groundwater, we can create stable quality crushed stone columns without collapsing the excavated holes. 【Features】 ■ Ensures the walls of the holes do not collapse ■ Creates a reinforcement body made only of crushed stone without soil mixing ■ Ensures the designed bearing capacity and permeability *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our residential crushed stone ground improvement work, "Eco Geo Method." There is no cement dust adhering to nearby houses or vehicles. It can be safely carried out even in densely populated residential areas. Additionally, the machinery used includes ground improvement machines and mini backhoes. The compaction of the crushed stone is done through rotation, resulting in minimal vibration and noise. 【Features】 ■ No scattering of cement dust ■ Low noise and vibration *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our residential crushed stone ground improvement work, "Eco Geo Method." Since there is no need for a curing period, the construction time can be shortened. No water is used in the construction. Because the material is crushed stone, there is no need for level management of the pile heads. Additionally, there is no worry about damaging the pile heads during foundation excavation. 【Features】 ■ No curing period required ■ Construction possible without water ■ No post-testing (test pieces) required ■ No level management of pile heads needed *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our residential crushed stone ground improvement work, "Eco-GEO Method." With the Eco-GEO Method (standard type), no waste (such as empty cement bags or cut steel pipes) is generated during construction, and no artificial materials are left underground. Furthermore, with the Eco-GEO ZERO Method (no soil disposal type), no surplus soil is generated during excavation, allowing us to achieve zero "waste and surplus soil" from construction through to the future. 【Methods】 ■ Eco-GEO Method (standard type) ■ Eco-GEO ZERO Method (no soil disposal type) *For more details, please download the PDF or feel free to contact us.

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The Eco-GEO method is a replacement method rather than a support pile method. The weight supported by the "crushed stone reinforcement body" is dispersed underground, so it does not require a solid foundation at the tip, and in many cases, the design length is shorter than that of conventional solid piles. Therefore, depending on the ground conditions, it may be possible to reduce the overall construction cost compared to other methods. 【Features】 ■ Supports the weight of the building with both the "crushed stone reinforcement body" and the "original ground" ■ Does not require a solid foundation at the tip ■ In many cases, the design length is shorter than that of conventional solid piles ■ Depending on the ground conditions, it may be possible to reduce the overall construction cost compared to other methods *For more details, please download the PDF or feel free to contact us.

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The "Eco-Geo Method" is a ground improvement technology that uses only crushed natural stone, without the use of cement or steel pipes. To ensure consistently stable quality and strength, it features the use of a uniquely developed EG casing (a cylindrical device) that is not used in other crushed stone methods. 1. Contributes to the preservation of the global environment 2. Protects land value 3. Strength does not degrade 4. Measures against liquefaction during earthquakes 5. Two types available: with and without soil removal 【Achievements and Adoption Numbers (as of March 2024)】 ■ Construction agencies: 58 locations ■ Housing companies that have adopted it: 4,171 companies ■ Total number of constructions: 34,449 cases *For more details, please download the PDF or feel free to contact us.

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The "Eco-GEO Method" is an environmentally friendly ground improvement technology developed through joint research between Mie University and Onabe Corporation, which uses only "crushed stone" without the need for cement or steel pipe piles. It can be utilized for ground improvement work for residential and small civil engineering structures. Furthermore, in September 2013, the "Eco-GEO ZERO," which can be constructed without soil disposal, was born. This made it possible to carry out construction in urban areas without disposal sites. It does not require cement plants, generators, or compressors that were necessary for conventional ground improvement work, and it allows for construction using a compact ground improvement machine (8-ton class) equipped with a uniquely developed EG casing (a steel tube with a rubber door) and a backhoe. The EG casing is driven into the ground, and crushed stone is filled and compacted into the space created during the extraction process. Because a compact ground improvement machine (approximately 2.0m wide) is used, construction can be performed even in narrow spaces. [Registered technology in the Ministry of Land, Infrastructure, Transport and Tourism's 2012 Technical Matching Database for Know-how and Technology Transfer Support Project] For more details, please contact us or download the catalog.

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