Publication detail

Influence of curing conditions on mechanical and fracture properties of alkali activated slag concrete

ŠIMONOVÁ, H. KUCHARCZYKOVÁ, B. BÍLEK, V. TOPOLÁŘ, L. KOCÁB, D.

Original Title

Type

abstract

Language

English

Original Abstract

The aim of this work is to determine the physical, mechanical and fracture characteristics of concrete specimens with alkali activated binder cured at different conditions. The concrete mixture with alkali activated ground granulated blast furnace slag was selected for the purpose of the experiment. The binder was activated by the liquid sodium silicate with the silicate modulus of 2.0. Natural sand and gravel were used as a fine and coarse aggregate, respectively. The maximum aggregate size was 16 mm. The binder : aggregate : water ratio was 1 : 3 : 0.46. During the specimens ageing, the dynamic modulus of elasticity was determined using a resonance method. The fracture characteristics were determined based on the results of the three-point bending test of specimens provided with an initial central edge notch. The fracture experiments were conducted at the age of 3 and 38 days. The loading force (F), the displacement measured in the middle of the span length (d), and the crack mouth opening displacement (CMOD) were continuously recorded during the test. The records of fracture tests were subsequently evaluated using the effective crack model, work-of-fracture method and double-K fracture model. The fracture tests were also accompanied by the monitoring of acoustic responses using the acoustic emission method.

Keywords

concrete, slag, alkali activation, fracture

Authors

ŠIMONOVÁ, H.; KUCHARCZYKOVÁ, B.; BÍLEK, V.; TOPOLÁŘ, L.; KOCÁB, D.

Released

26. 9. 2019

Publisher

RTU Press, Riga Technical University

Location

Riga

ISBN

978-9934-22-356-3

Book

Book of Abstracts of 4th International Conference Innovative Materials, Structures and Technologies.

Pages from

Pages to

Pages count

BibTex

@misc{BUT158933,
  author="Hana {Šimonová} and Barbara {Kucharczyková} and Vlastimil {Bílek} and Libor {Topolář} and Dalibor {Kocáb}",
  title="Influence of curing conditions on mechanical and fracture properties of alkali activated slag concrete",
  booktitle="Book of Abstracts of 4th International Conference Innovative Materials, Structures and Technologies.",
  year="2019",
  pages="23--24",
  publisher="RTU Press, Riga Technical University",
  address="Riga",
  isbn="978-9934-22-356-3",
  note="abstract"
}