B+ G (Betontechnologie + Materialbewirtschaftung AG) is an independent consulting company specialized in concrete technology and spoil management.
B+ G AG was founded in 2010 (former B-I-G AG).
B+ G develops spoil management concepts for underground operations during which large quantities of rocks are excavated. The quality of this raw
material is investigated using a test method procedure especially developed for this purpose. The selected material can then be used as aggregates for concrete and/ or filling debris.
Additionally, B+ G advises building contractors in the field of concrete technology.
Until now B+ G has been responsible for the use over 50 million tons of tunnel excavation
material and over 18 million tons of aggregates produced out of suitable muck material!
Since 2021 B+ G supports a consortium for the tender of the material management lot. Based on our experience, the raw material is continuously tested in the construction site's own laboratory.
Concrete tests with sulphate-containing aggregates (produced from tunnel excavation) and special binders were carried out in the Modane intermediate attack on 7 April 2016.
Among other things, the sulphate resistance is to be investigated.
The new Spitallam dam in the Bernese Oberland will require around 200,000m3 of concrete. The mass concrete consists of a maximum grain size of 125mm! A gravel plant was built for the production of the aggregates. B+ G supports the client KWO in the quality of raw materials, aggregates and concrete.