Ground reinforcement work | Cost reduction by omitting mix tests with uniform strength CWC method.

The Cross Wing Column Method that brings about a quality revolution in ground reinforcement work. It achieves the omission of mixing tests and ensures uniform strength with patented technology that has a coefficient of variation of 25% or less.

The variation in strength of improved bodies in ground reinforcement work is a direct cause of differential settlement accidents in buildings. The Cross-Wing Column Method (CWC Method) developed by Geotech Co., Ltd. thoroughly mixes the on-site soil and cement slurry using patented intersecting six-blade mixing wings, creating uniform and high-quality columnar bodies through deep mixing treatment. It has achieved a coefficient of variation of 25% or less in performance verification tests for sandy soil, clayey soil, and loam layers, allowing for a smaller markup factor in quality control, which effectively reduces excessive cement addition. Furthermore, due to this exceptional quality stability, the omission of preliminary indoor mixing tests for small-scale buildings is officially recognized. Quality inspections can also apply "Inspection Method A" using on-site produced cores (molded cores), enabling significant cost reductions for preliminary tests and substantial shortening of construction periods. We provide rational reinforcement proposals with reliable technology that has obtained the GBRC performance certification (No. 12-17 Rev. 1) from the General Incorporated Foundation Japan Building Comprehensive Testing Institute.

Other civil engineering worksResidential foundationsRenovation and repair methods