Abdulrahman Albar

ORCID: 0000-0001-6147-2448
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About
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Research Areas
  • Innovations in Concrete and Construction Materials
  • Additive Manufacturing and 3D Printing Technologies
  • Concrete and Cement Materials Research
  • Recycling and utilization of industrial and municipal waste in materials production
  • Material Properties and Applications
  • Bone Tissue Engineering Materials
  • Building materials and conservation
  • Advanced Optical Imaging Technologies
  • Human Pose and Action Recognition
  • BIM and Construction Integration
  • Modular Robots and Swarm Intelligence
  • Dielectric materials and actuators
  • Gait Recognition and Analysis
  • Advanced Vision and Imaging
  • Hand Gesture Recognition Systems
  • Digital Holography and Microscopy

Brunel University of London
2019-2023

The weak mechanical properties the 3D printed parts can limit competence of this technology when compared to conventionally cast-in-mold cementitious composites structures. However, experimental results in study showed that incorporation nano additives could improve property Six geopolymeric mixtures were designed and tested for their flow-ability, shape stability, buildability performance. Different dosage graphite platelets (NGPs) ranging from 0.1% 1%, by weight geopolymer, incorporated...

10.1016/j.conbuildmat.2020.118928 article EN cc-by Construction and Building Materials 2020-04-03

The widespread popularity of additive manufacturing in most industries ranging from biomedical to aerospace suggests a transformation manufacturing, which has recently also emerged the construction sector. This paper presents an active system for extrusion-based 3D printing cementitious materials. can be extended other materials and scaled up with slight hardware modifications. proposed uses unconventional yet simplistic approach generate consistent output material throughout process....

10.1016/j.rineng.2020.100135 article EN cc-by-nc-nd Results in Engineering 2020-04-29

This study investigates the addition of Poly-vinyl Alcohol (PVA) fibres and attapulgite nanoclay to alkali-activated materials (AAMs) with aim enhancing mechanical performance optimizing printability buildability AAMs. The fresh properties six mix formulations, including flowability, slump values, rheology, shape retention, extrusion window, were evaluated. best performing mixes, that exhibited optimal properties, 3D printed, their performance, microstructure, investigated. 1 wt.-% (i.e....

10.1016/j.matdes.2021.109574 article EN cc-by Materials & Design 2021-02-10

This study investigates the effects of natural and calcined halloysite clay minerals ("NH" "CH", respectively) on performance 3D printed alkali-activated materials (AAMs). Halloysite are selected as they low-cost abundantly available. At first, different characterisation techniques were employed to characterise NH CH additives. Mechanical performance, extrusion window, shape stability several AAM formulations containing various dosages (0.5 wt% 5 wt%) additives evaluated. The best-performing...

10.1016/j.matdes.2022.111183 article EN cc-by Materials & Design 2022-09-20

This study investigates the printability of one-part brick powder-based alkali-activated materials (AAMs) containing end-of-life particles as aggregate. The novel formulation showcases promise for 3D printing small to medium-sized building blocks, reminiscent a Lego-type system, capitalising on rapid setting time inherent AAMs. effect replacing up 50% by weight natural aggregate with fresh properties materials, including slump measurements, flowability, time, open and green strength were...

10.1016/j.dibe.2023.100248 article EN cc-by Developments in the Built Environment 2023-10-12

Additive manufacturing (AM), popularly known as `3D printing', is a technique that builds physical 3D objects layer by using materials such polymers, metals, and cementitious composites. The widespread popularity of additive in most industries ranging from biomedical to aerospace suggests revolution which has recently emerged the construction sector. Considered future construction, AM used concrete printing due its benefits reducing waste contributing towards circular economy goals through...

10.1109/ismsit.2019.8932771 article EN 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) 2019-10-01

A human gesture is a non-verbal form of communication and critical in human-robot interactions. Vision-based recognition methods play key role to detect hand motion support such Hand allows appropriate, usable interface between users devices. gestures can be used for various fields which makes it able implemented further. not only useful people who are hearing-impaired or disabled but also the have experienced stroke, as they need communicate with other using different common essential sign...

10.1109/ismsit.2019.8932739 article EN 2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) 2019-10-01

Holoscopic 3D imaging (also known as Integral imaging) is a promising technique for capturing full colour spatial images using single aperture holoscopic camera. It mimics fly's eye with microlens array, which will view the scene at slightly different angle to its adjacent lens that records three-dimensional information onto two-dimensional surface. To date, camera adaptors are designed and prototyped large scale SLR cameras. This paper proposes an innovative design solution prototyping...

10.1109/dmiaf.2016.7574929 article EN 2016-07-01
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