The return of deep soil mixing

Article Abstract:

The deep soil mixing technique originally developed in the U.S. is making a comeback after mechanical improvements made by the Japanese. It is a ground-treatment technique that uses mechanical equipment to mix cementitious materials with in-situ soil. The Japanese developed the cement deep mixing technique for application to marine works and land sites. The equipment comprises of a soil-mixing machine and a mixing plant for slurry preparation and flow control. The base machine and the lead maintain accurate vertical alignment with the help of support at three points.

Usage, Buildings, Cement, Cements (Building materials), Mixing, Mixing (Materials processing)

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A primer on micropiles

Article Abstract:

A study conducted by the Federal Highway Administration recommends the classification of micropiles based on their behavior and grouting methods involved. The micropiles directly resist loads. These also provide support to structures in seismic situations. Long-term corrosion of micropiles and specific construction tools are important issues. Micropiles are the cast-in replacement piles made by placing grouting material in drilled piles. These are used in underpinning structures or areas with little headroom or access.

Reports, Engineering design, Piling (Civil engineering), Pilings (Building)

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Deep mixing method: A global perspective

Article Abstract:

The use of deep mixing technology in geotechnical construction has increased in the US over the past 10 years. The deep mixing method (DMM) incorporates a range of related technologies to provide in situ soil treatment. The main applications for DMM include hydraulic cutoffs, structural walls, ground treatment, liquefaction mitigation, containing hazardous materials and ground improvement. New methods are emerging, with developments in materials such as fly ash, slag and gypsum.

Soil mechanics

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