Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

It is shown that high operational reliability of structural materials, in particular at high temperatures, is achieved through the use of ultra-high strength cement composites. Studies of various types of Portland cements with mineral additives of the CEM II/A type have established that a stone base...

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Autores principales:	Myroslav Sanytsky, Tetiana Kropyvnytska, Iryna Нeviuk, Pawel Sikora, Serhii Braichenko
Formato:	article
Lenguaje:	EN RU UK
Publicado:	PC Technology Center 2021
Materias:	ultra-high strength cementitious composite superzeolite alkaline nanomodifier high temperatures operational properties Technology (General) T1-995 Industry HD2321-4730.9
Acceso en línea:	https://doaj.org/article/257d9172991e4fdbaa22a9532ed7ba67
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spelling	oai:doaj.org-article:257d9172991e4fdbaa22a9532ed7ba672021-11-04T14:09:04ZDevelopment of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier1729-37741729-406110.15587/1729-4061.2021.242813https://doaj.org/article/257d9172991e4fdbaa22a9532ed7ba672021-10-01T00:00:00Zhttp://journals.uran.ua/eejet/article/view/242813https://doaj.org/toc/1729-3774https://doaj.org/toc/1729-4061It is shown that high operational reliability of structural materials, in particular at high temperatures, is achieved through the use of ultra-high strength cement composites. Studies of various types of Portland cements with mineral additives of the CEM II/A type have established that a stone based on Portland cement with superzeolite is the most resistant to high temperatures. It has been proven that due to the "self-autoclaving" effect, the strength of a stone based on CEM II/A-P 42.5 R is 1.2–1.3 times higher than a stone based on other types of CEM II/A. To obtain fast-hardening cement composites, a nanotechnological approach based on the use of sol-gel technology has been implemented. Using the methods of IR spectroscopy, electron microscopy, the fact of obtaining, by the chemical method of synthesis, an alkaline nanomodifier N-C-S-H-PCE, which is a nano–liquid based on nano-core seeds of sodium/calcium hydrosilicates, has been proved. It has been confirmed that the introduction of the alkaline nanomodifier N-C-S-H-PCE provides a significant intensification of the early structure formation processes in the paste based on Portland cement with superzeolite (after 12 hours, 24 hours and 28 days, the strength is 16.9; 30.5 and 104.1 MPa). It has been established that the complex combination of Portland cement with superzeolite, corundum aggregate, basalt fiber and alkaline nanomodifier provides rapid-hardening of ultra-high strength cement composites (T=400 °C) with improved operational properties. Thus, there is reason to assert the feasibility of developing rapid-hardening ultra-high strength cementitious composites. This solves the problems associated with the need to increase their early strength and performance. As a result, it is possible to carry out repair work to protect equipment from abrasive wear at elevated temperaturesMyroslav SanytskyTetiana KropyvnytskaIryna НeviukPawel SikoraSerhii BraichenkoPC Technology Centerarticleultra-high strength cementitious compositesuperzeolitealkaline nanomodifierhigh temperaturesoperational propertiesTechnology (General)T1-995IndustryHD2321-4730.9ENRUUKEastern-European Journal of Enterprise Technologies, Vol 5, Iss 6 (113), Pp 62-72 (2021)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	ultra-high strength cementitious composite superzeolite alkaline nanomodifier high temperatures operational properties Technology (General) T1-995 Industry HD2321-4730.9
spellingShingle	ultra-high strength cementitious composite superzeolite alkaline nanomodifier high temperatures operational properties Technology (General) T1-995 Industry HD2321-4730.9 Myroslav Sanytsky Tetiana Kropyvnytska Iryna Нeviuk Pawel Sikora Serhii Braichenko Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
description	It is shown that high operational reliability of structural materials, in particular at high temperatures, is achieved through the use of ultra-high strength cement composites. Studies of various types of Portland cements with mineral additives of the CEM II/A type have established that a stone based on Portland cement with superzeolite is the most resistant to high temperatures. It has been proven that due to the "self-autoclaving" effect, the strength of a stone based on CEM II/A-P 42.5 R is 1.2–1.3 times higher than a stone based on other types of CEM II/A. To obtain fast-hardening cement composites, a nanotechnological approach based on the use of sol-gel technology has been implemented. Using the methods of IR spectroscopy, electron microscopy, the fact of obtaining, by the chemical method of synthesis, an alkaline nanomodifier N-C-S-H-PCE, which is a nano–liquid based on nano-core seeds of sodium/calcium hydrosilicates, has been proved. It has been confirmed that the introduction of the alkaline nanomodifier N-C-S-H-PCE provides a significant intensification of the early structure formation processes in the paste based on Portland cement with superzeolite (after 12 hours, 24 hours and 28 days, the strength is 16.9; 30.5 and 104.1 MPa). It has been established that the complex combination of Portland cement with superzeolite, corundum aggregate, basalt fiber and alkaline nanomodifier provides rapid-hardening of ultra-high strength cement composites (T=400 °C) with improved operational properties. Thus, there is reason to assert the feasibility of developing rapid-hardening ultra-high strength cementitious composites. This solves the problems associated with the need to increase their early strength and performance. As a result, it is possible to carry out repair work to protect equipment from abrasive wear at elevated temperatures
format	article
author	Myroslav Sanytsky Tetiana Kropyvnytska Iryna Нeviuk Pawel Sikora Serhii Braichenko
author_facet	Myroslav Sanytsky Tetiana Kropyvnytska Iryna Нeviuk Pawel Sikora Serhii Braichenko
author_sort	Myroslav Sanytsky
title	Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
title_short	Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
title_full	Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
title_fullStr	Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
title_full_unstemmed	Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier
title_sort	development of rapid-hardening ultra-high strength cementitious composites using superzeolite and n-c-s-h-pce alkaline nanomodifier
publisher	PC Technology Center
publishDate	2021
url	https://doaj.org/article/257d9172991e4fdbaa22a9532ed7ba67
work_keys_str_mv	AT myroslavsanytsky developmentofrapidhardeningultrahighstrengthcementitiouscompositesusingsuperzeoliteandncshpcealkalinenanomodifier AT tetianakropyvnytska developmentofrapidhardeningultrahighstrengthcementitiouscompositesusingsuperzeoliteandncshpcealkalinenanomodifier AT irynaneviuk developmentofrapidhardeningultrahighstrengthcementitiouscompositesusingsuperzeoliteandncshpcealkalinenanomodifier AT pawelsikora developmentofrapidhardeningultrahighstrengthcementitiouscompositesusingsuperzeoliteandncshpcealkalinenanomodifier AT serhiibraichenko developmentofrapidhardeningultrahighstrengthcementitiouscompositesusingsuperzeoliteandncshpcealkalinenanomodifier
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Development of rapid-hardening ultra-high strength cementitious composites using superzeolite and N-C-S-H-PCE alkaline nanomodifier

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