Asiaq has facilities to perform a number of tests on a given soil type with a view to assessing the land carrying capacity. Furthermore, we can look at the soil properties with regard to water content and inflow, in this way assessing how much water to pump out during the excavation process, if any.
Isotopic measuring probe and vane testing
In case of foundation on sandy or gravelly materials or of pad foundation, a check of the carrying capacity of the relevant material may be performed by means of an isotopic measuring probe and a representative sample of the material taken for laboratory testing, before the foundation process begins.
The isotopic measuring probe works by means of a radioactive source, which is forced down into the sand/gravel, measuring how the soil influences the radioactive radiation.
If there are layers of clay soil in the depth of the foundation, vane testing may be performed to assess the undrained shear strength of the soil.
To assess the compressive strength of bedrock or concrete, Asiaq may apply a Schmidt-Hammer to test the compressive strength of the material. It may e.g. be applied after minor repairs of concrete or injection of concrete in cracks and will provide information on the compressive strength of the concrete and thus on its durability.
Fissures in the bedrock have a tendency to have the same direction and the same angle through the bedrock. By getting an overview of the structure of these fissures and thus the weak zones, the foundation and rock anchors may be designed to comply with the situation. If the bedrock is fissured and material has to be removed, the fissure measuring may give you an idea of whether the remaining part of the bedrock will remain in place or if it will fall down into the excavation.