Description
Rosenheim: floating foundation of a pylon
The use of fine-grained soils has long posed technical and economic challenges in earthwork engineering. An economically relevant and technically innovative method of improving the engineering properties of such soils is the addition of a dry, mineral residual material from demolition waste (screening material).
Advantages
In contrast to binders, which are otherwise typically used for the same purpose, this additive can usually be obtained at no cost, except for the transport costs. Standard methods can be used to mix the additive into the soil.
Improvement effect and application
The improvement effect is obtained because soil water is absorbed by the dry, porous recycling material. It has been investigated and confirmed through extensive expermental testing. A simple mathematical model for the development of the compaction properties of the treated soils, and a proposed list of suitability tests has been made available.