Effect of natural and calcined halloysite clay minerals as low-cost additives on the performance of 3D-printed alkali-activated materials

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dc.contributor.authorChougan, Mehdi
dc.contributor.authorHamidreza Ghaffar, Seyed
dc.contributor.authorNematollahi, Behzad
dc.contributor.authorSikora, Pawel
dc.contributor.authorDorn, Tobias
dc.contributor.authorStephan, Dietmar
dc.contributor.authorAlbar, Abdulrahman
dc.contributor.authorAl-Kheetan, Mazen J.
dc.date.accessioned2023-01-30T10:02:41Z
dc.date.available2023-01-30T10:02:41Z
dc.date.issued2022-09-20
dc.description.abstractThis study investigates the effects of natural and calcined halloysite clay minerals (“NH” and “CH”, respectively) on the performance of 3D printed alkali-activated materials (AAMs). Halloysite clay minerals are selected as they are low-cost and abundantly available. At first, different characterisation techniques were employed to characterise the NH and CH additives. Mechanical performance, extrusion window, and shape stability of several AAM formulations containing various dosages (0.5 wt% to 5 wt%) of the NH and CH additives were evaluated. The best-performing mixtures in terms of fresh and hardened properties namely, NH-1.5 and CH-1.5 mixtures (containing 1.5 wt% of NH and CH additives, respectively) were then selected for 3D printing. The results showed that the CH-1.5 mixture exhibited enhanced shape stability, buildability, and mechanical properties as compared to the control mixture. The flexural and compressive strengths of 3D printed CH-1.5 samples were 88% and 40%, respectively higher than those of the printed control samples. Using the CH-1.5 mixture, a twisted column with an intricate shape was printed to verify the suitability of the developed CH-modified AAM for the construction of complex structures. This study establishes the use of halloysite clay minerals as low-cost additives for enhancing the mechanical properties and printing performance of AAMs.en
dc.description.sponsorshipEC/H2020/101029471/EU/Digital fabrication and integration of Material reuse for environmentally friendly cementitious composite building blocks/DigiMat
dc.identifier.eissn1873-4197
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/18107
dc.identifier.urihttps://doi.org/10.14279/depositonce-16900
dc.language.isoen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.otheralkali-activated materialsen
dc.subject.otherhalloysite clay mineralen
dc.subject.othermechanical propertiesen
dc.subject.othershape retentionen
dc.subject.othershape retentionen
dc.titleEffect of natural and calcined halloysite clay minerals as low-cost additives on the performance of 3D-printed alkali-activated materialsen
dc.typeArticle
dc.type.versionpublishedVersion
dcterms.bibliographicCitation.articlenumber111183
dcterms.bibliographicCitation.doi10.1016/j.matdes.2022.111183
dcterms.bibliographicCitation.journaltitleMaterials and design
dcterms.bibliographicCitation.originalpublishernameElsevier
dcterms.bibliographicCitation.originalpublisherplaceAmsterdam
dcterms.bibliographicCitation.volume223
dcterms.rightsHolder.referenceCreative-Commons-Lizenz
tub.accessrights.dnbfree
tub.affiliationFak. 6 Planen Bauen Umwelt::Inst. Bauingenieurwesen::FG Baustoffe und Bauchemie
tub.publisher.universityorinstitutionTechnische Universität Berlin

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