WP1 – Laboratory investigations

In SUSI, different types and amounts of binders have been tested in the laboratory to find optimal combination and amounts that improve the strength and deformation properties of quick clay. Clay samples were taken from the Norwegian GeoTest Site (NGTS) for quick clay at Tiller-Flotten, Trondheim.

The binder used were partly standard cement CEM II, i.e. a mix of appr. 80 % Portland cement and appr. 15-20 % fly ash, and a binder consisting of a mixture of quicklime and LKD (lime kiln dust), which are locally available in Trøndelag. These binders are products labelled Stabila B100, B80, B60 and B40 (B40 is not sold commercially), and contain 100 %, 80-85 %, 60-80 % and 0 % quicklime, respectively.

The remaining part is LKD. Most of the laboratory tests were performed with 50 % cement and 50 % with one of the Stabila products.