Detail publikačního výsledku

Long-term degradation of concrete fracture toughness under exposure to aggressive chloride environments

MIARKA, P.; LISZTWAN, D.; KOCÁB, D.; BAYER, P.; KONEČNÝ, P.

Originální název

Long-term degradation of concrete fracture toughness under exposure to aggressive chloride environments

Anglický název

Long-term degradation of concrete fracture toughness under exposure to aggressive chloride environments

Druh

Článek WoS

Originální abstrakt

This paper presents the outcome of a long-term experimental study aimed at the effect of chloride attack on the concrete body, and its influence on the fracture performance. Fracture tests involved Brazilian discs with central notch (BDCN) made from concrete with blended cement as a binder. The BDCN samples were placed into a 50 % saturated sodium chloride solution (NaCl). Two initial conditions of porous space were considered, i.e., empty (air filled), and water-saturated. SEM observations are presented to discuss the hydration products as well as to study the damage to the microstructure. Additionally, the EDS analysis was employed to understand the origin of both hydration and corrosion products. The exposure to chlorides significantly, up to 26 %, reduces the fracture toughness KIC depending on the exposure time and initial conditions of pore space. The concept of effective thickness Beff that links microstructural degradation with macroscopic fracture behaviour was introduced.

Anglický abstrakt

This paper presents the outcome of a long-term experimental study aimed at the effect of chloride attack on the concrete body, and its influence on the fracture performance. Fracture tests involved Brazilian discs with central notch (BDCN) made from concrete with blended cement as a binder. The BDCN samples were placed into a 50 % saturated sodium chloride solution (NaCl). Two initial conditions of porous space were considered, i.e., empty (air filled), and water-saturated. SEM observations are presented to discuss the hydration products as well as to study the damage to the microstructure. Additionally, the EDS analysis was employed to understand the origin of both hydration and corrosion products. The exposure to chlorides significantly, up to 26 %, reduces the fracture toughness KIC depending on the exposure time and initial conditions of pore space. The concept of effective thickness Beff that links microstructural degradation with macroscopic fracture behaviour was introduced.

Klíčová slova

Fracture toughness, Chlorides, BDCN, Blended cement

Klíčová slova v angličtině

Fracture toughness, Chlorides, BDCN, Blended cement

Autoři

MIARKA, P.; LISZTWAN, D.; KOCÁB, D.; BAYER, P.; KONEČNÝ, P.

Rok RIV

2026

Vydáno

31.01.2026

Nakladatel

Elsevier

Periodikum

Construction and Building Materials

Svazek

509

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

15

Strany počet

15

URL

https://www.sciencedirect.com/science/article/pii/S0950061826001558?via%3Dihub

BibTex

@article{BUT200976,
  author="Petr {Miarka} and Dominik {Lisztwan} and Dalibor {Kocáb} and Patrik {Bayer} and Petr {Konečný}",
  title="Long-term degradation of concrete fracture toughness under exposure to aggressive chloride environments",
  journal="Construction and Building Materials",
  year="2026",
  volume="509",
  number="1",
  pages="1--15",
  doi="10.1016/j.conbuildmat.2026.145255",
  issn="0950-0618",
  url="https://www.sciencedirect.com/science/article/pii/S0950061826001558?via%3Dihub"
}