From nano-scale to macrostructure in composite for additive technologies

DOI

10.2991/aime-17.2017.100How to use a DOI?

Keywords

additive manufacturing; three dimensional printing; fine concrete; nanomodifier; phloroglucinol furfural oligomers; nanotechnologies

Abstract

Onrush of additive technologies might allow a 3D concrete printing method to become more profitable and efficient for building unique constructions than traditional methods of building. Until the XXI century, the science paid special attention to phenomena and processes at two levels: microscopic scale (400-760 nm) and atomic and subatomic scale (less than 1 nm). However, the range from 1 nm to 100 nm which is considered within the science of "nano" was not under consideration. But the properties of most materials are defined by their structure at the nanolevel. Considering a mix for 3D printing as a composite material produced from fine aggregate, pastematrix, water and air-bubble voids, it is possible to state that the main problem lies in regulating the process of forming the material structure in a bottom-up way (from nanoscale to macrostructure of the composite material) by nanomodifying the interphase boundary as well as in controlling the kinetics of all chemical reactions accompanying setting processes and optimizing processing activities and service properties of mortars and composites by means of nanomodifiers. It is proved that influencing purposefully the processing properties of high-concentrated mineral suspensions applied in construction industry allows directed synthesis of macromolecules of the nano-size and definite structure which have high absorptive capacity on particle surface and are able to modify the structure of the boundary layer. Modifying cement particles at the nanoscale allows decreasing water requirements of the mix and obtaining the required plastic strength and accelerated strength generation of cement for additive technologies.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Valentina Anatolyevna Poluektova
AU  - Nikolay Afanasyevich Shapovalov
AU  - Vladimir Nikolaevich Vladykin
PY  - 2017/07
DA  - 2017/07
TI  - From nano-scale to macrostructure in composite for additive technologies
BT  - Proceedings of the International Conference "Actual Issues of Mechanical Engineering" 2017 (AIME 2017)
PB  - Atlantis Press
SP  - 614
EP  - 619
SN  - 2352-5401
UR  - https://doi.org/10.2991/aime-17.2017.100
DO  - 10.2991/aime-17.2017.100
ID  - Poluektova2017/07
ER  -