{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T16:30:22Z","timestamp":1777739422914,"version":"3.51.4"},"reference-count":46,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2019,7,4]],"date-time":"2019-07-04T00:00:00Z","timestamp":1562198400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The advent of digital concrete fabrication calls for advancing our understanding of the interaction of 3D printing with material rheology and print parameters, in addition to developing new measurement and control techniques. Thixotropy is the main challenge associated with printable material, which offers high yield strength and low viscosity. The higher the thixotropy, the better the shape stability and the higher buildability. However, exceeding a minimum value of thixotropy can cause high extrusion pressure and poor interface bond strength if the printing parameters are not optimized to the part design. This paper aims to investigate the effects of both material and process parameters on the buildability and inter-layer adhesion properties of 3D printed cementitious materials, produced with different thixotropy and print head standoff distances. Nano particles are used to increase the thixotropy and, in this context, a lower standoff distance is found to be useful for improving the bond strength. The low viscosity \u201ccontrol\u201d sample is unaffected by the variation in standoff distances, which is attributed to its flowability and low yield stress characteristics that lead to strong interfacial bonding. This is supported by our microscopic observations.<\/jats:p>","DOI":"10.3390\/ma12132149","type":"journal-article","created":{"date-parts":[[2019,7,4]],"date-time":"2019-07-04T11:13:18Z","timestamp":1562238798000},"page":"2149","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":259,"title":["The Effect of Material Fresh Properties and Process Parameters on Buildability and Interlayer Adhesion of 3D Printed Concrete"],"prefix":"10.3390","volume":"12","author":[{"given":"Biranchi","family":"Panda","sequence":"first","affiliation":[{"name":"Singapore Centre for 3D Printing, School of Mechanical &amp; Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore"}]},{"given":"Nisar Ahamed","family":"Noor Mohamed","sequence":"additional","affiliation":[{"name":"Singapore Centre for 3D Printing, School of Mechanical &amp; Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore"}]},{"given":"Suvash Chandra","family":"Paul","sequence":"additional","affiliation":[{"name":"Singapore Centre for 3D Printing, School of Mechanical &amp; Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore"},{"name":"Discipline of Civil Engineering, School of Engineering, Monash University Malaysia, Bandar Sunway, Selangor 47500, Malaysia"}]},{"given":"GVP","family":"Bhagath Singh","sequence":"additional","affiliation":[{"name":"Laboratory of Construction Materials, IMX, EPFL, 1015 Lausanne, Switzerland"}]},{"given":"Ming Jen","family":"Tan","sequence":"additional","affiliation":[{"name":"Singapore Centre for 3D Printing, School of Mechanical &amp; Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1299-1449","authenticated-orcid":false,"given":"Branko","family":"\u0160avija","sequence":"additional","affiliation":[{"name":"Microlab, Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628CN Delft, The Netherlands"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1080\/17452759.2017.1326724","article-title":"3D printing trends in building and construction industry: A review","volume":"12","author":"Tay","year":"2017","journal-title":"Virtual Phys. 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