22–24 Mar 2021
University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia
Europe/Zagreb timezone

PHYSICAL MODELLING OF RC CONCRETE STRUCTURES USING ADDITIVELY MANUFACTURED REINFORCEMENT OF SUBMILLIMETER DIAMETER

Not scheduled
20m
VP (University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia)

VP

University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia

Kačićeva 26 10 000 Zagreb
Innovative Technology

Description

This paper claims that a major source of error in Seismic Analysis of Structures is the assumptions used to scale up from component- to system-level behavior. It also claims that validation of numerical models should be performed statistically. As a statistical validation requires multiple virgin specimens, the paper suggests the use of a 3D printer to construct the reinforcement of micro RC specimens (1:40) to be tested in a geotechnical centrifuge. It presents some first tests on gypsum-based micro concrete, additively manufactured rebars with diameters as low as 0.35mm, and small scale RC beams. The properties observed seem to resemble the ones of full scale RC components. Given the material properties, Opensees is able to accurately capture the behavior of the micro-beam.

DOI https://doi.org/10.5592/CO/1CroCEE.2021.244
Keywords Model Validation, Physical Modelling, 3D printing, Additive Manufacturing, Re-inforced Concrete, Cen

Primary authors

Lorenzo Del Giudice (IBK, ETH Zurich) Rafal Wrobel (Empa, Swiss Laboratories for Materials Science and Technology ) Christian Leinenbach (Empa, Swiss Laboratories for Materials Science and Technology ) Michalis F. Vassiliou (IBK, ETH Zurich )

Presentation materials