Abstract
Polymeric healing agents have proven their efficiency to heal cracks in concrete in an autonomous way. However, the bottleneck for valorisation of self-healing concrete with polymeric healing agents is their encapsulation. In the present work, the suitability of polymeric materials such as poly(methyl methacrylate) (PMMA), polystyrene (PS) and poly(lactic acid) (PLA) as carriers for healing agents in self-healing concrete has been evaluated. The durability of the polymeric capsules in different environments (demineralized water, salt water and simulated concrete pore solution) and their compatibility with various healing agents have been assessed. Next, a numerical model was used to simulate capsule rupture when intersected by a crack in concrete and validated experimentally. Finally, two real-scale self-healing concrete beams were made, containing the selected polymeric capsules (with the best properties regarding resistance to concrete mixing and breakage upon crack formation) or glass capsules and a reference beam without capsules. The self-healing efficiency was determined after crack creation by 3-point-bending tests.
| Original language | English |
|---|---|
| Title of host publication | 3rd International Conference on Innovative Materials, Structures and Technologies (IMST 2017) |
| Number of pages | 9 |
| Volume | 251 |
| DOIs | |
| Publication status | Published - 25 Oct 2017 |
| Event | 3rd International Conference on Innovative Materials, Structures and Technologies - Riga, Latvia Duration: 27 Sept 2017 → 29 Sept 2017 Conference number: 3 |
Publication series
| Name | IOP Conference Series: Materials Science and Engineering |
|---|---|
| Volume | 251 |
| ISSN (Print) | 1757-8981 |
| ISSN (Electronic) | 1757-899X |
Conference
| Conference | 3rd International Conference on Innovative Materials, Structures and Technologies |
|---|---|
| Abbreviated title | IMST 2017 |
| Country/Territory | Latvia |
| City | Riga |
| Period | 27/09/17 → 29/09/17 |