Mourani, Rosett

Diploma Thesis:
1890

Topic:
Production of concrete composite parts with vegetable aggregates

Editor:
Rosett Mourani

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Jens Otto

Supervisor:
University Supervisor: Dr.-Ing. Jan Kortmann

Editing Period:
21.04.2022 until 26.09.2022

Abstract:
Hemp concrete is a renewable building material consisting of hemp hurds, lime and water. It is heat-insulating, sound-insulating, flame-retardant and moisture-regulating. Hemp concrete also has a favourable CO2 balance. The current construction methods of hempcrete take place in-situ, by spraying and in the form of hempcrete blocks. As a building material, hempcrete is mainly used in walls. The production of prefabricated parts from hempcrete is not yet being implemented. The realisation of prefabricated parts made of hempcrete would give this building material a further opportunity to penetrate the market as a sustainable building material. In this paper, a concept for the production of prefabricated parts made of hempcrete in a circulation production is presented. In principle, hempcrete prefabricated parts are feasible, but the production in the prefabricated construction method involves significant challenges. The main challenge is the long hardening time of the building material hempcrete. Another challenge is the low load-bearing capacity of hempcrete, which makes it difficult or impossible to remove the formwork and lift the prefabricated components. In this paper, approaches to solving this problem are discussed. The basic solution approach is the use of a reinforcement structure, such as a carbon fibre scrim. Other approaches refer to the addition of short-fibre reinforcement in the form of glass fibres, for example.