Publication:
Development of Ultra-High-Performance Silica Fume-Based Mortar Incorporating Graphene Nanoplatelets for 3-Dimensional Concrete Printing Application

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dc.citedby5
dc.contributor.authorSalah H.A.en_US
dc.contributor.authorMutalib A.A.en_US
dc.contributor.authorKaish A.B.M.A.en_US
dc.contributor.authorSyamsir A.en_US
dc.contributor.authorAlgaifi H.A.en_US
dc.contributor.authorid58297421600en_US
dc.contributor.authorid55613230213en_US
dc.contributor.authorid55257665200en_US
dc.contributor.authorid57195320482en_US
dc.contributor.authorid57203885467en_US
dc.date.accessioned2024-10-14T03:18:02Z
dc.date.available2024-10-14T03:18:02Z
dc.date.issued2023
dc.description.abstractAlthough the use of 3D printing in civil engineering has grown in popularity, one of the primary challenges associated with it is the absence of steel bars inside the printed mortar. As a result, developing 3D printing mortar with ultra-high compressive, flexural, and tensile strengths is critical. In the present study, an ultra-high-performance mortar incorporating silica fume (SF) and graphene nanoplatelets (GNPs) was developed for 3D printing application. The concrete mixture added SF to the concrete mixture in the range between 0% and 20%, while GNPs were added as a partial replacement by cement weight from 0.5% to 2%. The flowability and the machinal properties of the proposed mortar, including compressive (CS), tensile (TS), and flexural strength (FS), were investigated and assessed. Microstructure analysis involving FESEM and EDX was also investigated and evaluated, while response surface methodology (RSM) was considered to predict and optimize the optimum value of GNPs and SF. Workability results show that the flowability is reduced when the amount of graphene increases. Based on the predicted and experimental results, ultra-high-strength mortar can be developed by including 1.5% of GNPs and 20% of SF, in which the CS jumped from 70.7 MPa to 133.3 MPa at the age of 28 days. The FS and TS were 20.66 MPa and 14.67 MPa compared to the control mix (9.75 MPa and 6.36 MPa), respectively. This favorable outcome was credited to the pozzolanic activity of SF and the effectiveness of GNPs in compacting the pores and bridging the cracks at the nanoscale level, which were verified by FE-SEM and EDX. In addition, the developed quadratic equations proved their accuracy in predicting and optimizing the mechanical properties with low error (less than 0.09) and high correlation (R2 > 0.97). It can be concluded that the current work is an important step forward in developing a 3D printing mortar. The lack of reinforcement in the printed mortar structure has been a considerable difficulty, and the SF and GNPs have increased the compressive, flexural, and tensile strengths of the mortar. Thus, these improvements will encourage the industry to utilize sustainable materials to produce more affordable housing. � 2023 by the authors.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo1949
dc.identifier.doi10.3390/buildings13081949
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85169144622
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85169144622&doi=10.3390%2fbuildings13081949&partnerID=40&md5=033d7ad2a1566f8c57e42cb5affd6282
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/34120
dc.identifier.volume13
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en_US
dc.relation.ispartofAll Open Access
dc.relation.ispartofGold Open Access
dc.sourceScopus
dc.sourcetitleBuildings
dc.subject3D printing mortar
dc.subjectgraphene
dc.subjectmechanical properties
dc.subjectoptimization modeling
dc.subjectultra-high-performance mortar
dc.titleDevelopment of Ultra-High-Performance Silica Fume-Based Mortar Incorporating Graphene Nanoplatelets for 3-Dimensional Concrete Printing Applicationen_US
dc.typeArticleen_US
dspace.entity.typePublication
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