Project data

Project name:	Investigations into the use of aerated concrete crushed sand in gypsum building products - infill filling for lightweight steel building frames & gypsum plaster
Running time:	04/2024 - 12/2025
Project organiser:
Project management:	Prof. Dr.-Ing. Robert Wudtke Phone: +49 (0) 3631 420 337 E-Mail:
Employee:
Project partners:
Funding amount:
Third-party donors:	Federal Ministry of Education and Research (BMBF); "WIR! - Change through innovation in the region" programme

Project coordination:

Nordhausen University of Applied Sciences

Weinberghof 4
99734 Nordhausen

Network coordination:

Nordhausen University of Applied Sciences
Weinberghof 4
99734 Nordhausen

Network partner:

Leibniz Institute for Materials-Oriented Technologies - IWT (Division of the Official Materials Testing Institute of the Free Hanseatic City of Bremen (MPA))

Contact person:

Dipl.-Ing. (FH) Katrin Schmidt

Phone: +49 (0) 3631 420 731
E-mail: katrin.schmidt@hs-nordhausen.de

Summary of the project

Objective of the project:

The aim of the joint project RCPoroGipsWandPutz is to develop building products from the two mineral materials gypsum and aerated concrete demolition material. The development of a wall infill (supported by a steel frame) and a lightweight gypsum plaster, both based on gypsum-bonded aerated concrete crushed sand, are being realised as a holistic approach. For both recycling methods, the aim is to reduce the proportion of gypsum to a technically feasible minimum and to maximise the proportion of aerated concrete crushed sand as an inert lean material. This reduces the required use of the primary raw material gypsum and adds value to the recycled material aerated concrete rubble.

The challenge is to adapt the preparation of the aerated concrete rubble to the required fresh mortar properties. While a soft to flowable consistency is required when producing the wall infill, the gypsum lightweight plaster requires a plastic consistency, high adhesion and long workability.

Funded by the Federal Ministry of Education and Research (BMBF) via the "WIR! - Wandel durch Innovation in der Region" programme.