PSI - Issue 20

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000 – 000

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Procedia Structural Integrity 20 (2019) 198–205

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Research into impacts of extremely cold climates on properties of basalt plastic rods A.K. Kychkin a, *, N.I. Golikov a , V.V. Popov a , A.A. Kychkin b a V.P. Larionov Institute of Physical and Technical Problems of the North, Siberi-an Branch, Russian Academy of Sciences, 1 Oktyabrskaya str., Yakutsk 677980, Russia b Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences” , 2, Petrovskogo str.,Yakutsk 677000, Russia Abstract The results of the research into impacts of extremely cold climates on physical and mechanical properties of basalt plastic rods of a periodic profile have been given. The object of research is a polymer composite building purpose material - basalt composite reinforcement , constituting one-way-polar basalt rods with deformed section diameter from 6 to 8mm., made on the basis of LLC "TBM" production unit with technical production line "Struna" under the technical specifications 2296-001-86166796-2013 "Non-metallic composite basalt reinforcement". Changes of physical and mechanical properties have been defined for the initial and exposed samples of basalt plastic reinforcement. After exposure in Yakutsk, the increase in strength properties by 4 – 12% depending on the diameter of rods has been revealed. The research of temperature dependences of the samples of basalt plastic reinforcement has showed rather good reproducibility of the results obtained by different methods. The observed increase in Tg, ∆L⁄L0 and ᾱ is due to the prevalence of the effect of post-hardening of the BPA polymeric matrix over the effect of tension relief of the polymeric matrix at the interface with basalt fiber. Thus, as the result of the conducted research, the increase in adhesion strength of the “fiber - matrix” compounds in the process of exposure has been established, and the matrix added solidity to the material and facilitated effective usage of mechanical properties of fibers and uniform distribution of efforts between them. 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Research into impacts of extremely cold climates on properties of basalt plastic rods A.K. Kychkin a, *, N.I. Golikov a , V.V. Popov a , A.A. Kychkin b a V.P. Larionov Institute of Physical and Technical Problems of the North, Siberi-an Branch, Russian Academy of Sciences, 1 Oktyabrskaya str., Yakutsk 677980, Russia b Federal Research Centre “The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences” , 2, Petrovskogo str.,Yakutsk 677000, Russia Abstract The results of th research into impacts of extremely cold climates on physical and mecha ical prop rties of basalt plastic rods of a periodic profile have been given. The object of research is a p lymer composite building purpose aterial - basalt composite reinforcement , constituting one-way-pol r basalt rods with deformed section diameter from 6 to 8mm., made on the basis of LLC "TBM" production unit with technical production line "Struna" under the technical s cifications 2296-001-86166796-2013 "Non-metallic composite basalt reinforc ment". Changes of physical and mechanical properti s have been defined for the initial and exposed samples of basalt plastic reinforcement. After exposure in Yakutsk, th increase in strength properties by 4 – 12% depending on the diameter of rods has been revealed. The research of temperature dependences of the samples of basalt plastic reinforcement has showed rather good reproducibility of the results obtained by different methods. The observed increase in Tg, ∆L⁄L0 and ᾱ is due to the pr val nce of the effect of post-hardening of the BPA polymeric matrix over the effect of tension relief of the polymeric matrix at the interface with basalt fiber. Thus, as the result of the conducted research, the incr ase in adhesion strength of the “fiber - matrix” compo nds in the process of exposur has en established, and the matrix added solidity to the material and facilitated effective usage of mechanical properties of fibers and uniform distribution of efforts between them.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

Keywords basalt plastic reinforcement; durability; thermal and mechanical analysis; linear thermal expansion; glass transition temperature. Keywords basalt plastic reinforcement; durability; thermal and mechanical analysis; linear thermal expansion; glass transition temperature.

* Corresponding author. Tel.: 8-914-225-3597. E-mail address: kychkinplasma@mail.ru * Correspon ing author. Tel.: 8-914-225-3597. E-mail address: kychkinplasma@mail.ru

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 2452 3216 © 2019 The Author(s). Publis ed by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.139