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"Harden" enables solidification and improvement under conditions that traditional cement-based solidifying agents and quicklime could not satisfy at various civil engineering and construction sites. It expands the possibilities for improvements under challenging conditions, such as high water content clay and organic soils that have been difficult to address, improvements considering vegetation, and modifications that reduce the environmental impact on the surrounding work area. This document is a collection of case studies introducing soil improvement projects that do not use cement (excerpt version). It includes photographs along with information on "adoption history," "construction details," and "solidifying agents used." Please feel free to download and take a look. [Contents] ■ Adoption history ■ Construction location ■ Construction details ■ Solidifying agents used *For more details, please refer to the PDF document or feel free to contact us.

• Soil improvement material
• Ground improvement materials
• Ground improvement

"Harden" enables solidification and improvement under conditions where conventional cement-based solidifying agents and quicklime do not suffice, at various civil engineering and construction sites. It expands possibilities for improvements that have been difficult until now, such as those for high water content mud and organic soils, improvements considering vegetation, and enhancements that minimize the impact on the surrounding work environment, even under stringent conditions. This document includes numerous case studies using photographs, such as "Application of Harden in Agricultural Pond Construction," "Application of Harden in Waterway Construction," and "Application of Harden in Agricultural Civil Engineering." Please feel free to download and take a look. [Contents] ■ Application of Harden in Agricultural Pond Construction ■ Application of Harden in Agricultural Pond Construction ■ Application of Harden in Waterway Construction ■ Application of Harden in Agricultural Civil Engineering *For more details, please refer to the PDF document or feel free to contact us.

• Soil improvement material
• Ground improvement materials
• Ground improvement

Agro Japan's environmentally friendly soil solidification material, the "Harden Series," effectively utilizes recycled resources from industrial by-products. 【Common Concerns Regarding Soil Solidification】 - There are concerns about the leaching of harmful substances, including hexavalent chromium... - Due to site conditions, it is necessary to consider alkaline leaching (high pH)... - During solidification, excessive strength may cause issues with re-excavation... - Even if soil improvement is achieved, it may revert to a muddy state when exposed to rain or water... - Off-site transportation of improved soil may be necessary... ⇒ The Harden Series offers solidification and environmental performance that is difficult to achieve with conventional cement-based solidification materials or lime-based improvement materials! Why not reconsider your solidification materials for stable treatment? 【Benefits of Harden】 ◆ Improved soil does not leach harmful substances like hexavalent chromium ◆ Improved soil is not classified as industrial waste ◆ Does not result in high pH ◆ Does not revert to a muddy state ◆ Re-excavation is easy *For more details, please download the materials or contact us directly.

• Other civil engineering services

By combining polymer coagulants, the water absorption capacity is extremely high, allowing for immediate improvement. Furthermore, solidification progresses after a curing period. 【Features】 ■ Suitable for immediate treatment of ultra-high water content soil, mud, and sludge ■ Extremely high water absorption capacity due to the combination of polymer coagulants, allowing for instant modification ■ Solidification progresses after a curing period *For more details, please refer to the PDF materials or related links, or feel free to contact us.

• Other civil engineering services

It is primarily composed of quicklime, and immediate modification effects can be expected due to the water absorption and exothermic reaction. It also has high solidification performance and can be applied to various soil types. 【Features】 ■ Improvement is promoted through the water absorption and exothermic reaction of the main component, quicklime. ■ It has solidification performance that exceeds that of typical lime-based improvement materials due to a special formulation. ■ It is effective even on soils that are difficult to solidify. ■ Applicable water content ratio is approximately 80-150%. *For more details, please refer to the PDF materials and related links, or feel free to contact us.

• Other civil engineering services

It can be used for the stabilization treatment of general soft soils and shallow layer improvements. It is a balanced standard product that combines modification effects and solidification performance. In particular, it demonstrates high solidification performance for high-water-content soils such as mud and dredged soil, making it possible to improve them into high-quality modified soil. 【Features】 ■ Applicable for general surface improvement, soft soil, clayey soil, and mud improvement and stabilization treatment ■ Suitable for clayey soil ■ Can be applied to a wide range of soil types and uses, including the improvement of dredged soil ■ Water content ratio of approximately 20 to 200% ■ Carbon offset for CO2 emissions associated with the production of Harden M It has obtained a carbon offset certification label based on Ministry of the Environment standards. Certification date: January 30, 2025 Certification number: CO2-1014 *For more details, please refer to the PDF materials and related links, or feel free to contact us.

• Other civil engineering services

"Harden" is an environmentally friendly soil solidification material that effectively utilizes recycled resources from industrial by-products. It is non-cement-based, allowing improved soil to be reused for backfilling and embankments without becoming industrial waste. The special lime-based soil improvement solidification material "Harden S" possesses solidification performance superior to that of typical lime-based improvement materials due to its unique formulation, and it is effective even on difficult-to-solidify soils. 【Features】 ■ Improvement is promoted by the water absorption and exothermic reaction of the main component, quicklime. ■ It has solidification performance superior to that of typical lime-based improvement materials due to its special formulation. ■ Effective even on difficult-to-solidify soils. ■ Applicable moisture content ratio of approximately 80-150%. *For more details, please refer to the PDF materials or feel free to contact us.

• Airport facilities

Harden L can be applied to low pH improvement considering vegetation and to the improvement of high organic matter soils. The manifestation of strength is moderate, allowing for improvements to soils that are friendly to vegetation without significantly raising the pH. It can also be applied to high organic matter soils, such as black soil, humic soil mixed soil, and loam, where improvement effects are difficult to achieve. 【Features】 ■ Moderate manifestation of strength ■ Improvement to soils considerate of vegetation without significantly raising pH ■ Applicable to high organic matter soils and sedimentary soils where improvement effects are difficult to achieve ■ Suitable moisture content ratio of approximately 40-150% ■ Harden L has been registered with NETIS. Registration date: October 7, 2024 NETIS registration number: TH-240014-A *For more details, please refer to the PDF materials and related links, or feel free to contact us.

• Other civil engineering services

"Harden" is an environmentally friendly soil solidification material that effectively utilizes recycled resources from industrial by-products. It is non-cement-based, ensuring that improved soil does not become industrial waste and can be reused for backfilling and embankments, contributing to reduced environmental impact and promoting a circular recycling approach. "Harden RM" is specifically designed for spray application of raw chip greening. By mixing auxiliary materials with the chips, germination and growth are enhanced. 【Features】 - No mesh wire is required - Strong against freezing and frost heave, suitable for cold regions and shaded slopes - Creates adhesion with the ground, preventing runoff due to rainfall - Mixing auxiliary materials with the chips enhances germination and growth - The standard amount is 2 kg per batch (approximately 100L of chips and 40L of auxiliary materials) *For more details, please refer to the PDF document or feel free to contact us.

• Subsidiary materials
• Other construction services

"Harden" is an environmentally friendly soil solidification material that effectively utilizes recycled resources from industrial by-products. It is non-cement-based, ensuring that improved soil does not become industrial waste and can be reused for backfilling and embankments, contributing to reduced environmental impact and promoting a circular recycling approach. "Harden RS" is specifically designed for sprayed soil and thick layer base applications, enhancing germination and growth. It creates adhesion with the underlying soil, preventing runoff due to rainfall. 【Features】 ■ Resistant to freezing and frost heave, suitable for cold regions and shaded slopes ■ Creates adhesion with the underlying soil, preventing runoff due to rainfall ■ Improves germination and growth ■ The standard application for thick layer base spraying is 1 kg per batch (160L of base agent) ■ The standard for sprayed soil application is 20 kg (1 bag) per 1m³ *For more details, please refer to the PDF document or feel free to contact us.

• Other construction services

At Agro Japan Co., Ltd., we conduct indoor mixing tests. To carry out improvement work using hardening agents, it is necessary to determine the amount to be added in advance, which is why indoor mixing tests are required. We conduct these tests based on the testing methods established by the Japanese Industrial Standards (JIS), the Japan Geotechnical Society (JGS), and the Japan Cement Association (JCA), using uniaxial compressive strength tests. 【Mixing Tests】 ■ Preliminary investigation and testing of received samples, particle size analysis ■ Calculation of the amount of hardening agent to be added ■ Uniform mixing of the hardening agent and the sample ■ Creation of test specimens using molds ■ Curing in a curing chamber, demolding 2-3 days later, and further curing for the specified number of days *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering works
• Civil Engineering Company
• Other civil engineering services

The "Harden Method" uses an environmentally friendly, non-cement-based solidifying agent called "Harden" to improve construction soil and organic soil according to their intended use, while also ensuring the required strength. It excels in safety from an environmental perspective and in on-site workability, allowing for the reuse of soil and high-water-content soil. It can be utilized as a modification method with low environmental impact, without containing harmful substances in the solidifying agent components. 【Features】 ■ Recycling ■ Low material and equipment costs ■ Workability ■ Re-excavation possible ■ Vegetation possible ■ High immediacy *For more details, please refer to the PDF materials or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method

We would like to introduce a case study of the environmentally friendly cement-based solidifying material "Eco Alpha." We performed surface improvement of embankments and bottom slab improvement using sediment from a retention pond. This product has expanded its applicability in various civil engineering and construction sites, from conventional cement-based solidifying materials to improvement materials for high-moisture organic soils, which were previously difficult to address, as well as improvement materials that consider vegetation, reaching areas that traditional cement could not handle. 【Case Study】 ■ Project Name: Kansai Electric Power Co., Inc. New Construction of the Kitakoumi Substation ■ Delivery Date: From May 2012 ■ Location: Fujikawa area, Maibara City, Shiga Prefecture ■ Soil Improvement Material Used: Low pH Eco Alpha DF ■ Land Condition: Pond sediment humus soil, gravelly soil, gravel-mixed clay soil *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method

We would like to introduce a case study of the soil solidification material "Harden M," which effectively utilizes recycled resources to reduce environmental impact. Excess sludge generated during the construction of bridge pier foundation piles was improved and used for embankment. 【Case Study】 ■ Project Name: Ministry of Land, Infrastructure, Transport and Tourism Chubu Regional Development Bureau Tokai Ring Expressway ■ Delivery Date: From June 2009 ■ Location: Yoro Town, Yoro District, Gifu Prefecture, and others ■ Soil Improvement Material Used: Harden M 3,658 tons ■ Land Condition: High moisture content soft soil *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method

We would like to introduce a case study of the soil solidification material "Harden M," which effectively utilizes recycled resources to reduce environmental impact. During the construction with a crawler-type pile driver, the supporting ground was improved. After the pile driving work was completed, the ground was re-excavated and reused on-site. 【Case Study】 ■ Project Name: Gifu Prefecture Ogaki Civil Engineering Office Mud River Sluice Gate Main Construction ■ Delivery Date: From July 2008 ■ Location: Within Juroku Town, Ogaki City, Gifu Prefecture ■ Soil Improvement Material Used: Harden M, 885 tons ■ Land Condition: Deposited mud, soft soil, N value 2-3 *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method
• Soil improvement material

We would like to introduce a case study of the soil solidification material "Harden M," which effectively utilizes recycled resources to reduce environmental impact. This product can be applied to general surface improvement, as well as the improvement and stabilization treatment of soft soil, clayey soil, and muddy soil. It is suitable for a wide range of soil types and applications, including the improvement of dredged soil, and is particularly effective for clayey soil. 【Case Study】 ■ Project Name: Aichi Prefecture Kaifu Construction Office Kanie River Improvement Project ■ Delivery Date: January 2005 ■ Location: Kanie New Town, Kanie, Kaifu District, Aichi Prefecture ■ Soil Improvement Material Used: Harden M, 414 tons ■ Land Condition: Accumulated soil within the river *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method
• Soil improvement material

We would like to introduce a case study of the soil solidification material "Harden M," which effectively utilizes recycled resources to reduce environmental impact. The construction site is now a biotope and has become famous as a habitat for fireflies. 【Case Study】 ■ Project Name: Kariya City Hall, Shiroike Renovation Project ■ Delivery Date: November 2005 ■ Location: Higashizakai-cho, Kariya City, Aichi Prefecture ■ Soil Improvement Material Used: Harden M, 775 tons ■ Condition of the Land: Sediment from a reservoir *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method
• Soil improvement material

We would like to introduce a construction case of the environmentally friendly soil solidification material "Harden S," which effectively utilizes recycled resources. Due to the earthquake, dredging was carried out in the coastal areas around the island that had become shallower. Because there was no place for the dredged soil, it was unloaded onto the island. After temporary storage, it was improved and used for raising the ground level. The entire island's ground sank by about 30 cm due to the earthquake, resulting in poor drainage in the area where the dredged soil was temporarily stored. The topsoil was removed to a depth of 30 cm, and the foundation was raised by 30 cm with improved soil, after which the topsoil was returned to restore it as rice paddies. 【Construction Case】 ■ Project Name: Miyagi Prefecture Sendai Regional Promotion Office Coastal Disaster Recovery Project ■ Delivery Date: From February 2015 ■ Location: Kankazawa Island, Shiogama City, Miyagi Prefecture ■ Soil Improvement Material Used: Harden S, 5,760 tons ■ Land Condition: Sludge and muddy soil with high water content *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services
• Civil Engineering Method
• Soil improvement material

Introducing the environmentally friendly cement-based solidifying material "Eco Alpha." From conventional cement-based solidifying materials to improvement materials for high-moisture organic soils, which have been difficult until now, and even improvement materials that consider vegetation, we have expanded our capabilities to cover a wide range of civil engineering and construction sites, including areas that traditional cement cannot address. [Features] - Flexibility that surpasses conventional cement-based materials - Ability to recycle and reuse excavated soil without disposal - Utilizes recycled materials such as fly ash supplied from paper mills, separated powdered gypsum from construction site waste gypsum board, and fine powder of blast furnace slag supplied from steel mills *For more details, please refer to the PDF materials or feel free to contact us.

• Other civil engineering services
• stone

This document includes examples of indoor mixing tests using "Harden M." "Harden M" is a standard type of soil improvement solidifying agent that is balanced with the capabilities of the raw materials. It can be applied to general surface improvement, improvement of soft soil, clayey soil, and muddy soil, as well as stabilization treatment. It is particularly suitable for clayey soil and can be applied to a wide range of soil types and uses, including the improvement of dredged soil. [Contents] - Strength comparison with cement-based improvement materials - Strength characteristics - Strength changes over curing days - Graph of pH value changes over elapsed days *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering services