The ISM construction method is a method for building structures and foundation grounds by mixing the cement milk manufactured in the plant by using the high-function agitation device (twin header) equipped on the tip of excavator without disposing of the gravel generated at the worksite not larger than approximately φ300 mm and then creating ISM at the predetermined strength (1 to 18 N/mm2).The ISM construction method is a method for building structures and foundation grounds by mixing the cement milk manufactured in the plant by using the high-function agitation device (twin header) equipped on the tip of excavator without disposing of the gravel generated at the worksite not larger than approximately φ300 mm and then creating ISM at the predetermined strength (1 to 18 N/mm2). This method has been mainly used for rivers and sand control, and it was adopted to fully recover resilient seashore embankments in the southern seashore of the Sendai Gulf, which was severely damaged in the Great East Japan Earthquake.
Patent: No. 2500005, No. 3528129

It can be applied to a wide range of generated gravels from those containing about 50% silt/clay content to boulders of about φ300 mm.

The reduction of the excavated amount and assembly of frames by concrete workers contributes to saving a great deal of the work period.

The labor saving, shortened work period and reduction of treated construction byproduct contribute to reducing the construction cost.

The systemized mechanical work realizes fast installation and shortens the time during which an excavated slope is left, which is a great contribution to improved safety.

The ISM Construction Method is a construction method jointly developed by the Hokuriku Regional Development Bureau of MLIT, Advanced Construction Technology Center, Onoda Chemico Co., Dai Nippon Construction, Daiho Corporation, and Ohmoto Gumi Co., Ltd.