Stronger and more sustainable freeze-thaw resistant concrete
| Reference number | |
| Coordinator | HIPOR Materials AB |
| Funding from Vinnova | SEK 300 000 |
| Project duration | June 2021 - December 2021 |
| Status | Completed |
| Venture | Strategic innovation program SIO Grafen |
| Call | Feasibility studies SIO Grafen spring 2021 - collaboration on commercial graphene applications |
Important results from the project
One of the goals for this project was to study how particle size, dispersion agents, dispersing energy, and addition level affect the ability of graphene to build strength in concrete. The project delivered strong insight but more work is needed for further optimization. Another goal of this project was to evaluate the combination of graphene and Expancel Microspheres in frost-resistant concrete. This goal was achieved.
Expected long term effects
The project found that graphene can be used in combination with Expancel Microspheres to improve the strength and durability of frost-resistant concrete. These technologies allow for the production of more sustainable concrete with low cement content. Small additions of graphene and microspheres make a strong impact. Good dispersion of the graphene is critical for the effect on compression strength. SEM imaging indicates that graphene particles can bridge nano cracks in the concrete and may help inhibit crack propagation.
Approach and implementation
The project composition was ideal for the purpose, with concrete producers in Swerock, R&D support in CBI and project student at LTU, and raw material suppliers in 2Dfab and Nouryon. HIPOR Materials as project leader.