Company History

Acquired the Technology Inspection Certification for LUC-SB wall construction method. Created and issued a blending test manual for soil-cement for the first time in Japan.

Our capital increased to 42 million yen.

Established LUC-SB Wall method research society (currently called as SB Wall construction method research society).

In collaboration with Kyoto Prefectural University, research was conducted on the durability of the LUC-SB Wall Method. Efforts were initiated to develop the INSEM-SB wall construction method, which primarily utilizes local soil and sand as its main materials.

Opened Kagoshima office in Aira, Kagoshima.

Acquired the Technology Inspection Certification for INSEM-SB wall construction method.

Conducted research on utilizing red soil in Okinawa as civil engineering materials with the Public Works Research Institute.

Started operating Japan’s first INSEM plant (automatic INSEM material making machinery). 

A function called “Insem-Piant Twin Hopper (improved version of INSEM plant machinery)” was added.

Opened blending test laboratory in Sakado, Saitama.

Published INSEM material adaptability test which is a simple blending test method of soil-cement.

Integrated Kagoshima office with the headquarter.

Installed a high performance compression test machinery to the blending test laboratory.

Initiated a research on utilizing iron and steel slag from steel works as requested by Nippon Steel Corporation.

Initiated research on utilizing steel slag to soil-cement in collaboration with Sabo & Landslide Technical Center and Kyoto University.

The headquarter was moved to 2-26-10 Haruoka, Minuma-ku, Saitama-shi, Saitama.

Integrated Sakado blending test laboratory to the headquarter and established a full-scale facility for the blending test.

Started a soil-cement quality management business. Introduced Japan’s first centralized plant in Aso, Kumamoto. Opened Kumamoto office in 437 Takehara, Aso-shi Kumamoto. Initiated research on utilization of fly ash to soil-cement in collaboration with Kyoto Prefecture University.

Developed quality management cloud system.

Commercialized INSEM construction method quality management cloud system. 

Opend Hiroshima office at 1-11-33 Yagi, Asaminami-ku, Hiroshima-shi, Hiroshima. 

Started research on possibility of soil-cement technology adaptability to the field of rivers in collaboration with Chuo University Research and Engineering Research Institute.

Soil Technology Corporation was established as a subsidiary company of INVAX Corporation. Blending test business and quality management business were transferred to Soil Technology Corporation.

In collaboration with Saga University, research has commenced on the modification technique for dredged soil from tidal rivers which can be crushed and compacted. 

In collaboration with Saga University, research has commenced on the modification technique for dredged cohesive soil from tidal river. 

Opened Hokkaido office at 1057-12 Kamiosatsu, Chitose-shi, Hokkaido.

Opened Shizuoka office at 587-4 Miyahara, Fujinomiya-shi, Shizuoka.

Hokkaido Soil Recycling Institute Corporation was established at 1057-10 Kamiosatsu, Chitose-shi, Hokkaido.

Hokkaido Soil Recycling Institute Corporation signed letter of intent for collaborative research with Hokkaido University, Research Faculty of Agriculture, Laboratory of Earth Surface Processes and Land Management.

Participated in “Technical Committee about rapid constructions by local soils” by Japan Society of Defense Facility Engineers.

Started preliminary test on “research and development of materials for civil engineering structure such as sabo facilities that are suitable for Hokkaido” at Hokkaido Soil Recycling Institute Corporation.

Our capital increased to 63.85 million yen after the capital entry of Tokyo Small and Medium Business Investment & Consultation CO., LTD.

Opened Hisatsu office at 1219-1 Toyonomachisubayashi, Uki-shi, Kumamoto.

The headquater moved to 23-1 Kakura, Iwatsuki-ku, Saitama-shi, Saitama.