A working trip was organized last Friday as a part of DeConcrete project activities, funded by Kolarctic Cross-Border Cooperation Programme. The project plan includes not only theoretical research (analysis of scientific data and preparation of analytical reports), but also a large practical and experimental component. In particular, specialists from Department of Composite Materials and Building Ecology headed by Professor Arkady Aisenstadt are supposed to select concrete samples at a demolished object for their further study in NArFU laboratories.
The demolition object is a five-stored residential building constructed in 1979 and located in the Obozersky settlement of Arkhangelsk region. This building was chosen because of its inadequate operational condition. The demolition contractors have already started their work at the site, and the NArFU experts got an opportunity to select necessary samples.
Sampling points were determined after studying the technical documentation of the object. Besides, mechanical performance tests were made and concrete class was determined. The chosen sampling points were located along the entire perimeter of the building (wall panels, floor slabs, staircases, etc.). Specialists know that concrete properties can change depending on intensity of various influences during operational period of the building. Climatic factors also play an important role in this process: change of temperatures, winds, humidity and light intensity.
After the samples are delivered to the laboratory, a comprehensive study is to be made. It is important to understand character and speed of changes occurring in concrete, what physical and chemical transformations run in secondary concrete rubble.
The data obtained during laboratory-based research will be applied for creation of new composite materials with recycled concrete as one of the components. Reusing concrete not only reduces construction waste, but also has a positive impact on the environment and contributes to a circular economy.
NArFU experts will start their work in the laboratory and share research results with the project partners from Norway and Finland.
Nadezhda Baykina, DeConcrete Project Manager