Publication Abstract

Proceedings of the Deep Mixing 2015 Conference, (DFI)

Outline and Execution Control System of Dry Jet Mixing (DJM) Method
Shigetoyo Yasui, Japan Construction Method and Machinery Research Institute, Japan; Keisuke Tsujimoto, Kobelco Cranes Co., Ltd., Japan; Masahiro Saitou, Onoda Chemico Co., Ltd., Japan; Nobushige Yasuoka, Dry Jet Mixing Method Association, Japan

The Dry Jet Mixing (DJM) Method was developed and has been put to practical use on the initiative of the Public Works Research Institute and Japan Construction Method and Machinery Research Institute. This method is used to inject powdery binder with compressed air into soft ground while mixing the binder with the soil using the mixing blade to reduce the moisture content of the ground and cause chemical reactions between the soil and binder, thereby strengthening the ground and stabilizing its quality. Recently, there is a demand for high-quality, high-accuracy execution control. This paper introduces the New DJM Execution Control System, developed to meet the future demand for more sophisticated ground improvement, based on the past results of the conventional system in order to provide new automated execution control with improved accuracy, functionality and column quantity.

 article #2125; publication #1013 (DM-2015)