{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T15:24:32Z","timestamp":1776785072820,"version":"3.51.2"},"reference-count":37,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2025,7,18]],"date-time":"2025-07-18T00:00:00Z","timestamp":1752796800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Basic Scientific Research Project of Colleges and Universities in Liaoning Province","award":["LJ212510146019"],"award-info":[{"award-number":["LJ212510146019"]}]},{"name":"Basic Scientific Research Project of Colleges and Universities in Liaoning Province","award":["202200050"],"award-info":[{"award-number":["202200050"]}]},{"name":"Basic Scientific Research Project of Colleges and Universities in Liaoning Province","award":["2017RC09"],"award-info":[{"award-number":["2017RC09"]}]},{"name":"Basic Scientific Research Project of Colleges and Universities in Liaoning Province","award":["2017LNQN12"],"award-info":[{"award-number":["2017LNQN12"]}]},{"name":"Science and Technology Project of the Ministry of Education","award":["LJ212510146019"],"award-info":[{"award-number":["LJ212510146019"]}]},{"name":"Science and Technology Project of the Ministry of Education","award":["202200050"],"award-info":[{"award-number":["202200050"]}]},{"name":"Science and Technology Project of the Ministry of Education","award":["2017RC09"],"award-info":[{"award-number":["2017RC09"]}]},{"name":"Science and Technology Project of the Ministry of Education","award":["2017LNQN12"],"award-info":[{"award-number":["2017LNQN12"]}]},{"name":"Talent Introduction Fund Project of Liaoning University of Science and Technology","award":["LJ212510146019"],"award-info":[{"award-number":["LJ212510146019"]}]},{"name":"Talent Introduction Fund Project of Liaoning University of Science and Technology","award":["202200050"],"award-info":[{"award-number":["202200050"]}]},{"name":"Talent Introduction Fund Project of Liaoning University of Science and Technology","award":["2017RC09"],"award-info":[{"award-number":["2017RC09"]}]},{"name":"Talent Introduction Fund Project of Liaoning University of Science and Technology","award":["2017LNQN12"],"award-info":[{"award-number":["2017LNQN12"]}]},{"name":"Fund Project of the Liaoning Provincial Department of Education","award":["LJ212510146019"],"award-info":[{"award-number":["LJ212510146019"]}]},{"name":"Fund Project of the Liaoning Provincial Department of Education","award":["202200050"],"award-info":[{"award-number":["202200050"]}]},{"name":"Fund Project of the Liaoning Provincial Department of Education","award":["2017RC09"],"award-info":[{"award-number":["2017RC09"]}]},{"name":"Fund Project of the Liaoning Provincial Department of Education","award":["2017LNQN12"],"award-info":[{"award-number":["2017LNQN12"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>As 3D concrete printing emerges as a transformative construction method, its structural safety remains hindered by unresolved issues of mechanical anisotropy and interlayer defects. To address this, we systematically investigate the failure mechanisms and mechanical performance of basalt fiber-reinforced 3D-printed magnesite concrete. A total of 30 cube specimens (50 mm \u00d7 50 mm \u00d7 50 mm)\u2014comprising three types (Corner, Stripe, and R-a-p)\u2014were fabricated and tested under compressive and splitting tensile loading along three orthogonal directions using a 2000 kN electro-hydraulic testing machine. The results indicate that 3D-printed concrete exhibits significantly lower strength than cast-in-place concrete, which is attributed to weak interfacial bonds and interlayer pores. Notably, the R-a-p specimen\u2019s Z-direction compressive strength is 38.7% lower than its Y-direction counterpart. To complement the mechanical tests, DIC, CT scanning, and SEM analyses were conducted to explore crack development, internal defect morphology, and microstructure. A finite element model based on the experimental data successfully reproduced the observed failure processes. This study not only enhances our understanding of anisotropic behavior in 3D-printed concrete but also offers practical insights for print-path optimization and sustainable structural design.<\/jats:p>","DOI":"10.3390\/ma18143379","type":"journal-article","created":{"date-parts":[[2025,7,18]],"date-time":"2025-07-18T11:12:34Z","timestamp":1752837154000},"page":"3379","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Study on Mechanical Properties of Composite Basalt Fiber 3D-Printed Concrete Based on 3D Meso-Structure"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-2044-4390","authenticated-orcid":false,"given":"Shengxuan","family":"Ding","sequence":"first","affiliation":[{"name":"School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4583-1820","authenticated-orcid":false,"given":"Jiren","family":"Li","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0037-9243","authenticated-orcid":false,"given":"Mingqiang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, University of Science and Technology Liaoning, Anshan 114051, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,18]]},"reference":[{"key":"ref_1","first-page":"e02941","article-title":"Utilization of bamboo for concrete columns in earthquake-resistant simple houses in Indonesia","volume":"20","author":"Gunasti","year":"2024","journal-title":"Case Stud. Constr. Mater."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"105957","DOI":"10.1016\/j.jobe.2023.105957","article-title":"The influence of earthquake characteristics on the seismic performance of reinforced concrete buildings in Australia with varying heights","volume":"67","author":"Alothman","year":"2023","journal-title":"J. Build. Eng."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"04024126","DOI":"10.1061\/JSENDH.STENG-13018","article-title":"Impact of long-duration earthquakes on successive earthquake-tsunami fragilities for reinforced concrete frame archetypes","volume":"150","author":"Harati","year":"2024","journal-title":"J. Struct. Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"104479","DOI":"10.1016\/j.autcon.2022.104479","article-title":"Durability properties of 3D printed concrete (3DPC)","volume":"142","author":"Nodehi","year":"2022","journal-title":"Autom. Constr."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"100251","DOI":"10.1016\/j.clema.2024.100251","article-title":"Recent developments on low carbon 3D printing concrete: Revolutionizing construction through innovative technology","volume":"12","author":"Khan","year":"2024","journal-title":"Clean. Mater."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Garc\u00e9s, G., Garc\u00eda-Alvarado, R., Bunster, V., and Mu\u00f1oz-Sanguinetti, C. (2025). Additive Construction 4.0: A systematic review of 3D concrete printing for Construction 4.0. Eng. Constr. Archit. Manag.","DOI":"10.1108\/ECAM-07-2024-0875"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"GivKashi, R.M., Moodi, F., and Ramezanianpour, M.A. (2025). Investigating shrinkage and mechanical properties of 3D-printed concretes under different curing conditions. Int. J. Civ. Eng., in press.","DOI":"10.1007\/s40999-025-01093-1"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"108377","DOI":"10.1016\/j.istruc.2025.108377","article-title":"Bond performance between FRP bars and 3D-printed high-performance concrete","volume":"73","author":"Zeng","year":"2025","journal-title":"Structures"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"120064","DOI":"10.1016\/j.engstruct.2025.120064","article-title":"Reinforcement design and structural performance for topology-optimized 3D-printed concrete truss beams","volume":"332","author":"Wang","year":"2025","journal-title":"Eng. Struct."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"106105","DOI":"10.1016\/j.autcon.2025.106105","article-title":"Automated analysis system for micro-defects in 3D-printed concrete","volume":"173","author":"Zhao","year":"2025","journal-title":"Autom. Constr."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"117423","DOI":"10.1016\/j.engstruct.2023.117423","article-title":"Seismic performance of Fe-SMA prestressed segmental bridge columns with 3D-printed permanent concrete formwork","volume":"302","author":"Raza","year":"2024","journal-title":"Eng. Struct."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"125572","DOI":"10.1016\/j.conbuildmat.2021.125572","article-title":"Analysis of mechanical performance and damage mechanism for 3D-printed concrete based on pore structure","volume":"314","author":"Liu","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"105661","DOI":"10.1016\/j.cemconcomp.2024.105661","article-title":"Mechanism of the influence of multiscale pore structure on triaxial mechanical properties of 3D-printed concrete with recycled sand","volume":"152","author":"Wu","year":"2024","journal-title":"Cem. Concr. Compos."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"125819","DOI":"10.1016\/j.conbuildmat.2021.125819","article-title":"Bond-shear performances and constitutive model of interfaces between vertical and horizontal filaments of 3D-printed concrete","volume":"316","author":"Wang","year":"2022","journal-title":"Constr. Build. Mater."},{"key":"ref_15","first-page":"144","article-title":"Damage mechanism of hollow-sandwich packed columns in basalt-fiber 3D-printed concrete","volume":"48","author":"Zhao","year":"2025","journal-title":"J. Liaoning Univ. Sci. Technol."},{"key":"ref_16","first-page":"e04087","article-title":"Microscopic mechanism and predictive calculation of mechanical properties of basalt-fiber modified 3D-printed cement-based materials. Case Stud","volume":"21","author":"Li","year":"2024","journal-title":"Constr. Mater."},{"key":"ref_17","first-page":"101712","article-title":"Finite-element analysis on the anisotropic behavior of 3D-printed concrete under compression and flexure","volume":"39","author":"Xiao","year":"2021","journal-title":"Addit. Manuf."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"288","DOI":"10.1038\/s44359-025-00047-z","article-title":"3D-printing technology in concrete construction","volume":"1","author":"Zhang","year":"2025","journal-title":"Nat. Rev. Clean Technol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"558","DOI":"10.1016\/j.cemconres.2011.12.003","article-title":"Hardened properties of high-performance printing concrete","volume":"42","author":"Le","year":"2012","journal-title":"Cem. Concr. Res."},{"key":"ref_20","first-page":"102982","article-title":"Topology optimization for 3D concrete printing with various manufacturing constraints","volume":"57","author":"Bi","year":"2022","journal-title":"Addit. Manuf."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"109730","DOI":"10.1016\/j.jobe.2024.109730","article-title":"Effects of pore properties on mechanical performance of 3D-printed concrete units: Experimental and numerical methods","volume":"92","author":"Liu","year":"2024","journal-title":"J. Build. Eng."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Jiang, X., Li, Y., Yang, Z., Li, Y., and Xiong, B. (2024). Harnessing path optimization to enhance the strength of 3D-printed concrete. Buildings, 14.","DOI":"10.3390\/buildings14020455"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"107309","DOI":"10.1016\/j.jobe.2023.107309","article-title":"Mechanical anisotropy, rheology and carbon footprint of 3D-printable concrete: A review","volume":"76","author":"Wang","year":"2023","journal-title":"J. Build. Eng."},{"key":"ref_24","unstructured":"China Concrete & Cement-Based Products Association (2022). Test Method for Basic Mechanical Properties of 3D-Printed Concrete. Standard No. T\/CCPA 33-2022."},{"key":"ref_25","unstructured":"Ministry of Construction of the People\u2019s Republic of China (2003). Standard for Test Methods for Mechanical Properties of Ordinary Concrete. Standard No. GB\/T 50081-2002."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"138108","DOI":"10.1016\/j.conbuildmat.2024.138108","article-title":"Mechanical properties and failure mechanism of 3D-printed ultra-high-performance concrete","volume":"447","author":"Yao","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Chen, Y., Kuva, J., Mohite, A., Li, Z., Rahier, H., Al-Neshawy, F., and Shu, J. (2023). Investigation of the internal structure of hardened 3D-printed concrete by X-CT scanning and its influence on mechanical performance. Materials, 16.","DOI":"10.3390\/ma16062534"},{"key":"ref_28","first-page":"82","article-title":"Mesoscopic generation of random concrete structure using an equivalent space method","volume":"3","author":"Sayyafzadeh","year":"2019","journal-title":"J. Soft Comput. Civ. Eng."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Li, F., Hu, X., and Shahzad, Q. Anisotropic behavior in 3D-printed concrete: Finite-element simulation approach. J. Mater. Eng. Perf., 2024. in press.","DOI":"10.1007\/s11665-024-10536-0"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"5893","DOI":"10.1007\/s00707-023-03706-z","article-title":"Constitutive modeling of orthotropic nonlinear mechanical behavior of hardened 3D-printed concrete","volume":"234","author":"Mader","year":"2023","journal-title":"Acta Mech."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"119942","DOI":"10.1016\/j.engstruct.2025.119942","article-title":"Experimental and numerical assessment of recycled plastic fibers on the shear strength and behavior of reinforced-concrete beams with basalt FRP bars","volume":"330","author":"Hassan","year":"2025","journal-title":"Eng. Struct."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"140098","DOI":"10.1016\/j.conbuildmat.2025.140098","article-title":"Comparative analysis of polypropylene, basalt and steel fibers in 3D-printed concrete: Effects on flowability, printability, rheology and mechanical performance","volume":"465","author":"Xia","year":"2025","journal-title":"Constr. Build. Mater."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"04024098","DOI":"10.1061\/JBENF2.BEENG-6723","article-title":"Experimental and analytical investigation of the shear behavior and strength of haunched beams reinforced with basalt-fiber-reinforced-polymer rebars","volume":"29","author":"Hassan","year":"2024","journal-title":"J. Bridge Eng."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"108313","DOI":"10.1016\/j.compositesb.2020.108313","article-title":"Plastic shrinkage cracking in 3D-printed concrete","volume":"200","author":"Moelich","year":"2020","journal-title":"Compos. Part B-Eng."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"140492","DOI":"10.1016\/j.conbuildmat.2025.140492","article-title":"Effect of X-ray CT-characterized pore structure on freeze\u2014thaw resistance of 3D-printed concrete with recycled coarse aggregate","volume":"469","author":"Liu","year":"2025","journal-title":"Constr. Build. Mater."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"137417","DOI":"10.1016\/j.conbuildmat.2024.137417","article-title":"Evaluation of anisotropy and statistical parameters of compressive strength for 3D-printed concrete","volume":"440","author":"Zhang","year":"2024","journal-title":"Constr. Build. Mater."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"102948","DOI":"10.1016\/j.jobe.2021.102948","article-title":"Microstructural characterization of 3D-printed concrete","volume":"44","author":"Yu","year":"2021","journal-title":"J. Build. Eng."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/14\/3379\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T18:12:07Z","timestamp":1760033527000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/18\/14\/3379"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,7,18]]},"references-count":37,"journal-issue":{"issue":"14","published-online":{"date-parts":[[2025,7]]}},"alternative-id":["ma18143379"],"URL":"https:\/\/doi.org\/10.3390\/ma18143379","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,7,18]]}}}