What is the in-situ soil mixing or cement mixing system?
In many parts of the world soft subsoil is a very serious problem for maritime construction. For these situations, in-situ soil mixing is often implemented. This method is variously known as the cement deep mixing method, soil cement columns / piles, auger mixing, cement soil mixing, rotary mixing or just soil mixing. The basis of all these mixing systems is that cement hardener is first mixed with water in slurry form which is then ejected into the soil by high power pumps. Simultaneously, during this injection phase, the soil is stirred thoroughly by rotating mixing blades. The cement reacts with the pore water of the soil, resulting in an in-situ hardening process. In this way, the soil is improved in specific locations and to the standards required in the shortest time and in an economical manner. These cement mixing methods are applied for the following purposes: Foundation of breakwaters, revetment and wharfs; seismic reinforcement of existing marine structures; foundations of br
