Building Materials and Products
DOI: http://www.dx.doi.org/10.24866/2227-6858/2019-4-14
Slavcheva G., Britvina E., Ibryaeva A.
GALINA SLAVCHEVA, Doctor of Engineering Sciences, Professor, AuthorID: 910549,
SPIN: 4834-5942, ORCID: 0000-0001-8800-2657, ResearcherID: U-4421-2018,
ScopusID: 57195684636, e-mail: gslavcheva@yandex.ru
EKATERINA BRITVINA, Postgraduate, AuthorID: 174467, SPIN: 2538-5440,
ORCID 0000-0002-0462-4991, ResearcherID: B-9056-2019, ScopusID: 57197819710, e-mail: sos71@list.ru
Department of Technology of Building Materials, Products and Constructions
ANASTASIYA IBRYAEVA, Engineer-Researcher, AuthorID: 1047596, SPIN: 2764-4957, ORCID 0000-0001-7059-8296,
e-mail: n.oduvanchik@mail.ru
Higher School of Building Materials Science (Scientific and Educational Academic Center)
Voronezh State Technical University
84, 20-letiya Oktyabrya St., Voronezh, Russia, 394006
3D-build printing:
the operational method for verifying the cement mixture properties
Abstract: The work is devoted to the substantiation of the operational method for verifying the rheological characteristics of mixtures for 3D-build printing. To evaluate them, we used the squeezing and penetrometric tests, which were used to evaluate the structural strength, plastic strength, penetration resistance strength (plastic strength value) of viscous-plastic mixtures. The studies were carried out on cement mixtures of various component compositions, differing in the type and granulometry of the filler and the type of viscosity modifiers. A quantitative assessment of the criterion rheological properties of the 3D-printable mixtures revealed a high measure of the correlation interrelation between the structural strength, plastic strength, determined by squeezing test, and plastic strength value, determined by the penetrometric method. Regardless of the characteristics of the component composition of the mixtures, the correlation coefficient between these indicators is in the range of 0.85-0.95, which corresponds to the presence of a functional relationship between them. The value of the plastic strength value can be recognized as a complex characteristic of the visco-plastic properties of the 3D-printable mixture, and the penetrometric test is proposed as an operational express control method.
Keywords: 3D-printing, build mixture, squeezing test, rheological properties, penetrometric method.
