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A textile reinforcement method for 3D printed concrete

Authors :
JJ Janse van Rensburg
Adewumi J. Babafemi
Riaan Combrinck
Source :
MATEC Web of Conferences. 364:05015
Publication Year :
2022
Publisher :
EDP Sciences, 2022.

Abstract

The reinforcement of 3D printed concrete elements has proven to be a significant challenge that needs to be addressed. However, before reinforcement can be applied, the behaviour of the consequent composite materials must first be studied. This study, therefore, investigates the macromechanical behaviour of AR glass fibre textile material as reinforcement in terms of its flexural performance, to determine whether it is a feasible solution. During this study, elements, consisting of four layers, are printed flat on the surface bed of the printer and are reinforced by a textile mesh in between subsequently printed layers. The specimens are reinforced at different locations, with different geometrical orientations as well as different filament orientations, and are then compared. The flexural performance is quantified by conducting four-point bending tests 28 days after printing. The results of the tests show that by adding this specific mesh, the average flexural strength of the elements increases significantly. Furthermore, elements with the warp yarns aligned with the printed filament have increased flexural strength. During the testing, it is also discovered that voids form underneath the textile mesh when applied between the layers and that these voids influence on the performance of the elements.

Subjects

Subjects :
General Medicine

Details

ISSN :
2261236X
Volume :
364
Database :
OpenAIRE
Journal :
MATEC Web of Conferences
Accession number :
edsair.doi...........a87944772a58ae1636b045ea4502d621
Full Text :
https://doi.org/10.1051/matecconf/202236405015