Experimental and numerical analysis of the fracture response of alkali-activated slag-based materials

Experimental and numerical analysis of the fracture response of alkali-activated slag-based materials

Paper in proceedings outside WoS and Scopus

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 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.

mechanical fractrue parameters, alkali-activated slag, three-point bending, identification

mechanical fractrue parameters, alkali-activated slag, three-point bending, identification

LIPOWCZAN, M.; LEHKÝ, D.; ŠIMONOVÁ, H.; KUCHARCZYKOVÁ, B.

2023

05.10.2020

EDP Sciences

France

MATEC Web of Conferences, AMCM 2020

2261-236X

MATEC web of conferences

323

French Republic

1

10

10

https://www.matec-conferences.org/articles/matecconf/abs/2020/19/matecconf_amcm2020_01006/matecconf_amcm2020_01006.html

http://hdl.handle.net/11012/196384

matecconf_amcm2020_01006