Title: Fine-grained fibre concretes modified by complexed nanoadditives

Authors: T.A. Nizina; A.N. Ponomarev; A.S. Balykov; N.A. Pankin

Addresses: Department of Building Structures, Ogarev Mordovia State University, 54 Kommunisticheskaya street, Apt. 19, Saransk, The Republic of Mordovia, 430005, Russia ' Department of Technology, Organization and Economics of Construction, Peter the Great St. Petersburg Polytechnic University, 29 Politekhnicheskaya street, Saint Petersburg, 195251, Russia ' Department of Building Structures, Ogarev Mordovia State University, 80 Polezhaeva street, Apt. 193, Saransk, The Republic of Mordovia, 430030, Russia ' Department of Solid State Physics, Ogarev Mordovia State University, 68 Bolshevistskaya street, Saransk, The Republic of Mordovia, 430005, Russia

Abstract: In this paper, the prospects of using the fullerene-like nanoparticles and the combination of them with the analogous modifiers and different kinds of reinforcing fibres for the modification of the composite cement concrete are set out. The use of the complex modifiers based on the dispersed fibres and fullerene-like nanoparticles is proposed. The results of the volume modification of the fine-grained concretes by the disperse fibres, and special polyfunctional additives of various types are presented. The polypropylene multifilament fibres were used as the dispersed reinforcement, the polyacrylonitrile synthetic fibres and the basalt microfibres modified by astralenes were used alternatively. The condensed silica foam, high active metakaolin and waterproof additive 'Penetron Admix' were tested as additives in these mixes also. According to the results of this experimental work, the optimal complexes, additives and dispersed fibres for the purpose of improving the characteristics of fine-grained fibre-reinforced concretes were selected.

Keywords: nanomodifiers; fibre reinforcement; fibre-reinforced concrete; cement; composite concrete; astralenes; carbon nanotubes; CNTs; fine-grained concrete; condensed silica foam; metakaolin; waterproof additives; modified basalt microfibres; PPN fibres; PAN fibres; polyacrylonitrile synthetic fibres; tensile strength; bending; compressive strength; density; normal humidity; nanotechnology; nanoadditives; fullerenes; polypropylene fibres; multifilament fibres.

DOI: 10.1504/IJNT.2017.083441

International Journal of Nanotechnology, 2017 Vol.14 No.7/8, pp.665 - 679

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 30 Mar 2017 *

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