Engineering and Technology Journal

Innovative self-healing concrete using polycarboxylate ether: a fused deposition modeling approach with 3D-printed polylactic acid vascular networks

Noor A. Hameed; Alaa A. Abdul-Hamead; Farhad M. Othman

Articles in Press, Corrected Proof, Available Online from 26 March 2024

https://doi.org/10.30684/etj.2024.145499.1655

Abstract

Concrete's fracture susceptibility is due to its limited tensile strength, which can lead to cracks. Steel reinforcement is added to designated areas to address this issue, but minuscule ... Read More ... Concrete's fracture susceptibility is due to its limited tensile strength, which can lead to cracks. Steel reinforcement is added to designated areas to address this issue, but minuscule cracks can allow liquids and vapors to infiltrate the reinforcing material, causing corrosion. Self-healing concrete can resist corrosion by mending and sealing minor cracks. This study aims to determine if fused deposition modeling (FDM) can fabricate innovative vascular networks and tubes from polylactic acid (PLA) created by using three-dimensional (3D) printing methods, and its characteristics were contrasted with those of two- and one-dimensional (2D) networks.The dimensions of the internal and exterior diameters were 4 and 5.6 mm, respectively. The researchers used a planetary ball mill to apply an organic polycarboxylate ether liquid and fly ash nanopowder to all vascular architectures. The prefabricated tubes were then incorporated into a concrete beam to enable self-repairing capabilities. The water-to-cement ratio was 0.6%; the mixture was 1 part cement, 2.16 parts water, and 2.98 other ingredients. The self-healing properties were assessed using a four-point bending test. The developed pipes can produce self-healing concrete by introducing nano fly ash particles and low-viscosity healing solutions into the blood vessel network, enabling the concrete to undergo self-repair mechanisms. The specimen that had 3D treatment restored its strength to 95% at flexural recovery.The dimensions of the internal and exterior diameters were 4 and 5.6 mm, respectively. The researchers used a planetary ball mill to apply an organic polycarboxylate ether liquid and fly ash nanopowder to all types of vascular architectures. The prefabricated tubes were then incorporated into a concrete beam to enable self-repairing capabilities. The water-to-cement ratio was 0.6%, and the mixture was 1-part cement, 2.16 parts water, and 2.98 parts other ingredients. The self-healing properties were assessed using a four-point bending test. The developed pipes can be used in the production of self-healing concrete by introducing nano fly ash particles into the blood vessel network and low-viscosity healing solutions, enabling the concrete to undergo self-repair mechanisms. the specimen that had 3D treatment restored its strength to a level of 95% at flexural recovery.

Effect of Adding MgO on Microstructure of Zirconia Toughened Alumina (ZTA) Composite for Medical Applications

Alaa S. Taeh; Farhad M. Othman; Alla A. Abdul-Hameed

Volume 40, Issue 12 , December 2022, , Page 1731-1743

https://doi.org/10.30684/etj.2022.134694.1245

Abstract

Zirconia toughened alumina (Biolox delta) is a new-generation ceramic with four times the strength of alumina alone, used in artificial joints. The composite ZTA, consisting of 82 wt. ... Read More ...

The Effect of the Waste of Materials and Carbon Nanotube on the Concrete Incorporated with Steel Fibers

Mayada H. Saleem; Farhad. M. Othman; Alla A. Abdul-Hameed

Volume 39, Issue 6 , June 2021, , Page 956-964

https://doi.org/10.30684/etj.v39i6.2018

Abstract

The addition of agricultural and industrial solid wastes and nanomaterials to concrete combined with steel fibers to improve the mechanical and electrical properties of concrete was ... Read More ...

Preparation of Al2O3/MgO Nano-Composite Particles for Bio-Applications

Hayder A. Sallal; Alla A. Abdul-Hameed; Farhad. M. Othman

Volume 38, 4A , April 2020, , Page 586-593

https://doi.org/10.30684/etj.v38i4A.290

Abstract

This study describes the preparation and study of the properties of Nano composite particles prepared in a sol-gel method which consists of two materials (Αl2Ο3-MgΟ). ... Read More ...

Author = Abdul-Hameed, Alla A.

Innovative self-healing concrete using polycarboxylate ether: a fused deposition modeling approach with 3D-printed polylactic acid vascular networks

Abstract

Effect of Adding MgO on Microstructure of Zirconia Toughened Alumina (ZTA) Composite for Medical Applications

Abstract

The Effect of the Waste of Materials and Carbon Nanotube on the Concrete Incorporated with Steel Fibers

Abstract

Preparation of Al2O3/MgO Nano-Composite Particles for Bio-Applications

Abstract