Skip to main content

Research Repository

Advanced Search

Effect of graphene oxide nanoparticles on blast load resistance of steel fiber reinforced concrete

Jamnam, Sittisak; Maho, Buchit; Techaphatthanakon, Apisit; Ruttanapun, Chesta; Aemlaor, Peerasak; Zhang, Hexin; Sukontasukkul, Piti

Authors

Sittisak Jamnam

Buchit Maho

Apisit Techaphatthanakon

Chesta Ruttanapun

Peerasak Aemlaor

Piti Sukontasukkul



Abstract

Concrete structures may occasionally be subjected to both intentional or unintentional explosions which could cause casualties and damage to properties. Advance research on protective structures are important to enhance blast resistance of materials, and to protect life and properties. This study investigated the effect of graphene oxide nanoparticles (GO) on enhancing the blast resistance of fiber reinforced cement mortar (FRM). GO in solution was incorporated in steel fiber reinforced mortar at the rate of 0, 0.025, 0.050, 0.075, and 0.100 % by weight of cement. A series of experiments were carried out consisting of 2 stages: Stage 1) workability, setting time, compressive and flexural strength, and microstructure using SEM and XRD processes, and Stage 2) blasting loading test. The optimum GO dosage giving the highest compressive and flexural strengths from the 1st stage was determined and chosen to continue on the 2nd stage (blast loading test). The blasting tests were performed on panel specimens (500mmx1000mmx60mm) using TNT weighing ½ lb. (226.7 grams) with three different standoff distances of 340, 400, and 460 mm. Results from Stage 1 on both flexural and compression tests indicated an optimum GO content of 0.025% by weight of cement. The workability was found to decrease with the increasing the GO content. The SEM images also revealed that the addition of GO nanoparticles reduced the porosity in the mortar matrix. For the blasting test, three damage patterns were observed: complete flexural failure, partial damage (flexural cracking), and no major damage, depending on the standoff distance and specimen type. The addition of GO can reduce the maximum and permanent deflections of the panel under blast loading. FRM panels with GO at 0.025% tested at the standoff distance of 460 mm showed the lowest level of damage.

Journal Article Type Article
Acceptance Date Jun 13, 2022
Online Publication Date Jun 18, 2022
Publication Date 2022-08
Deposit Date Jun 13, 2022
Publicly Available Date Jun 19, 2023
Print ISSN 0950-0618
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 343
Article Number 128139
DOI https://doi.org/10.1016/j.conbuildmat.2022.128139
Keywords Graphene oxide, Steel fiber, Fiber reinforced mortar, Blast resistance, Blast loading, TNT, Non-contact detonation
Public URL http://researchrepository.napier.ac.uk/Output/2878360

Files

Effect Of Graphene Oxide Nanoparticles On Blast Load Resistance Of Steel Fiber Reinforced Concrete (accepted version) (4.9 Mb)
PDF






You might also like



Downloadable Citations