| Issue |
MATEC Web Conf.
Volume 230, 2018
7th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2018)
|
|
|---|---|---|
| Article Number | 03012 | |
| Number of page(s) | 7 | |
| Section | Construction Materials, Protection and Repair of Structures and Buildings | |
| DOI | https://doi.org/10.1051/matecconf/201823003012 | |
| Published online | 16 November 2018 | |
Research of impact resistance of nanomodified fiberreinforced concrete
Lviv Polytechnic National University, Building Production Department, 12 S. Bandera Str., 79013, Lviv, Ukraine
* Corresponding author: ulmarushchak@ukr.net
Effects of multilevel modification of concrete structure with complex nanomodifier at nano- and microlevel and polypropylene fiber at macro- and mesolevel on mechanical properties and impact resistance of concrete are presented. Nanomodification with complex nanomodifier, which consists of polycarboxylate ether superplasticizer, ultra- and nanofine mineral additives, provides early structure formation, higher strength at early and later ages. The increasing of the static hardness according to Brinell and Mayer of the nanomodified concrete was indicated the high energy of the bond between the structural elements in the surface layer of nanomodified concrete, as well as the ability of the structure to withstand elastic and plastic deformations under uneven compression load. Incorporating of polypropylene fibre to concrete was increased the impact resistance according to parameter of first crack strength and failure energy and changed the failure pattern from brittle to ductile mode.
© The Authors, published by EDP Sciences, 2018
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