The client wishes to profit from the advantages of modern high-modulus polymeric fibers to optimize and extend his product pallet (ready-mixed mortar and special binders). Concretum AG was entrusted with the selection of optimal types of fibers and their integration into the formulation of existing and new products.
A kind of reconstruction mortar with the following material properties should be developped:
Consolidating behaviour after exeeding the primary resistance to cracking.
Increase of the ductility (plasticity) for at least two dimensions compared to traditional cement-bound reconstruction mortars.
Reliable limitation of the cracking widths to an uncritical measure.
Easy and safe application with traditional working processes.
Solution
Translation of the set of requirements into physical material parameters.
Modelling of the material behaviour of fiber mortars.
Parameter study to define the necessary fiber properties, the matrix and its contact surface with numerical simulation procedure.
Selection and modification of a suitable high-modulus polimeric fiber.
Definition of the composition of mortar.
Experimental control and technical documentation.
Judgement
The chosen procedure made an efficient and goal-directed product development possible. The realization of an innovative technology allowed our client to offer his costumers a top product for concrete repair work. Furthermore, the gained knowledge could be used for other products.
Facts
Duration of the project:
March to October 2000
Client:
Customer from the building materials industry
