摘要:
The invention relates to a method for tearing down, collecting or cleaning of a building part or material, wherein the method comprises the steps of providing a tracing agent, wherein the tracing agent comprises an amount of a tracer and/or a number of particulate markers, applying the tracing agent onto the building part and/or admixing the tracing agent into the building part, tearing down and/or collecting at least a part of the building part and/or cleaning a surface of the building part, whereby a contaminated product is produced, wherein the contaminated product comprises from 0.0001 to 10 percent by weight of the applied or admixed tracing agent as well as material or residual material, which has been torn down, collected and/or cleaned from the building part, and assigning the contaminated product to a specific building renovation and/or building demolition by means of a detection or reading of the tracing agent in the contaminated product. The invention further relates to a contaminated product, which may be provided by the method.
摘要:
The invention relates to a hydraulic binder comprising at least 70 wt. % of a solid mineral compound consisting of at least a mixture of silica, alumina and alkaline-earth oxides, the total amount of CaO and MgO representing at least 10 wt. % of the solid mineral compound, and an activation system of which at least 30 wt. % is a salt derived from phosphoric acid. The invention also relates to building products produced from a mortar composition comprising such a binder.