| Issue |
MATEC Web Conf.
Volume 323, 2020
10th International Conference of Advanced Models and New Concepts in Concrete and Masonry Structures (AMCM 2020)
|
|
|---|---|---|
| Article Number | 01006 | |
| Number of page(s) | 10 | |
| Section | Adnanced Models and New Concepts in Concrete Structures | |
| DOI | https://doi.org/10.1051/matecconf/202032301006 | |
| Published online | 05 October 2020 | |
Experimental and numerical analysis of the fracture response of alkali-activated slag-based materials
Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic
* Corresponding author: lipowczan.m@fce.vutbr.cz
The paper deals with the experimental and numerical determination of mechanical fracture parameters of fine-grained composites based on the alkali-activated slag (AAS) at different ages of hardening. Two AAS composites, which differed only in the presence of shrinkage reducing admixture, were studied. The prismatic specimens with the nominal dimensions of 40 × 40 × 160 mm and initial central edge notch were subjected to fracture tests in a three-point bending configuration. The results of the fracture tests in the form load F versus deflection d diagrams were used as input data for the identification of parameters via the inverse analysis based on the artificial neural network whose aim is to transfer the fracture test response data to the desired material parameters. The modulus of elasticity, tensile strength, and fracture energy values were identified and subsequently compared with values obtained based on the direct fracture test evaluation using the effective crack model and work-of-fracture method.
© The Authors, published by EDP Sciences, 2020
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