The influence of graphene admixture on strength properties of cement-based composites

0577884 - ÚTAM 2024 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Pokorný, J. - Ševčík, Radek
The influence of graphene admixture on strength properties of cement-based composites.
Journal of Physics: Conference Series. Vol. 2628. Bristol: IOP Publishing, 2023, č. článku 012025. ISSN 1742-6588. E-ISSN 1742-6596.
[Central European symposium on thermophysics (CEST 2023) /5./. Poprad (SK), 06.09.2023-08.09.2023]
Institucionální podpora: RVO:68378297
Klíčová slova: cement-based composites * nanomaterials * graphene
Obor OECD: Materials engineering
https://doi.org/10.1088/1742-6596/2628/1/012025

Cement-based composites pose a long tradition in the construction industry and are used in various forms such as structural concretes, masonry and plaster mortars, injection and special mixtures for three-dimensional concrete printing. Fine granular composites intended for injection and printing activities may have increased tend to shrinkage and cracking. The application of nanomaterials may bring a partial solution to toughening of cement-based composites. For this reason, the effect of the addition of various amounts of graphene admixture up to 0.03 wt.% on the strength properties of fine granular cement-based composites was researched. All prepared fresh mixes had the constant w/c ratio, and the behavior of modified composites was compared with plain reference material. On hardened test specimens, compressive strengths obtained after 1, 7 and 28 days of curing time were evaluated. The experimental investigation revealed, on the one hand, the partial worsening of workability of fresh mixes being compensated with an increasing amount of a superplasticizer and, on the other hand, the increment of compressive strength up to 12.5 % even for specimens with the lowest addition of graphene.
Trvalý link: https://hdl.handle.net/11104/0346975