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Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)

Modern materials science is aimed towards abandoning Portland cement in the production of building materials. The scientific novelty of this study lies in its being the first time a comprehensive study of the structure formation of alkali-activated materials (AAM) based on thermally treated marl and...

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Autores principales: Mintsaev, Magomed, Murtazaev, Sayd-Alvi, Salamanova, Madina, Bataev, Dena, Saidumov, Magomed, Murtazaev, Imran, Fediuk, Roman
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9572227/
https://www.ncbi.nlm.nih.gov/pubmed/36233917
http://dx.doi.org/10.3390/ma15196576
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author Mintsaev, Magomed
Murtazaev, Sayd-Alvi
Salamanova, Madina
Bataev, Dena
Saidumov, Magomed
Murtazaev, Imran
Fediuk, Roman
author_facet Mintsaev, Magomed
Murtazaev, Sayd-Alvi
Salamanova, Madina
Bataev, Dena
Saidumov, Magomed
Murtazaev, Imran
Fediuk, Roman
author_sort Mintsaev, Magomed
collection PubMed
description Modern materials science is aimed towards abandoning Portland cement in the production of building materials. The scientific novelty of this study lies in its being the first time a comprehensive study of the structure formation of alkali-activated materials (AAM) based on thermally treated marl and Na(2)SiO(3) is carried out. The tasks for achieving this goal were to characterize the thermally treated marl as a new binder, and to comprehensively research the microstructure, fresh, physical, and mechanical properties of the AAM based on the binder. Received active particles of marl with a smaller size than Portland cement have a specific surface area of 580–590 m(2)/kg. The mineral composition of heat-treated marl is characterized by calcium silicates, which guarantee good binding properties. The results of X-ray diffraction analysis of the samples based on the clinker-free binder of alkaline activation using opoka-like marl confirmed the presence of calcite, quartz, and feldspar close to albite, micas, and zeolites. The obtained products of the chemical interaction of the components of the binder confirm the effectiveness of the newly developed AAM. As a result of comparing several binders, it was found that the binder “thermally treated marl—Na(2)SiO(3)” is the most effective, since for specimens based on it, a maximum compressive strength of 42.6 MPa, a flexural strength of 4.6 MPa, and minimum setting time were obtained (start 26 min, end 32 min) as well as a water absorption of 10.2 wt.%. The research results will be of interest to specialists in the construction industry, since the proposed recipes for clinker-free cements are an alternative to expensive and energy-intensive Portland cement and provide the creation of strong and durable concrete and reinforced concrete composites.
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spelling pubmed-95722272022-10-17 Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3) Mintsaev, Magomed Murtazaev, Sayd-Alvi Salamanova, Madina Bataev, Dena Saidumov, Magomed Murtazaev, Imran Fediuk, Roman Materials (Basel) Article Modern materials science is aimed towards abandoning Portland cement in the production of building materials. The scientific novelty of this study lies in its being the first time a comprehensive study of the structure formation of alkali-activated materials (AAM) based on thermally treated marl and Na(2)SiO(3) is carried out. The tasks for achieving this goal were to characterize the thermally treated marl as a new binder, and to comprehensively research the microstructure, fresh, physical, and mechanical properties of the AAM based on the binder. Received active particles of marl with a smaller size than Portland cement have a specific surface area of 580–590 m(2)/kg. The mineral composition of heat-treated marl is characterized by calcium silicates, which guarantee good binding properties. The results of X-ray diffraction analysis of the samples based on the clinker-free binder of alkaline activation using opoka-like marl confirmed the presence of calcite, quartz, and feldspar close to albite, micas, and zeolites. The obtained products of the chemical interaction of the components of the binder confirm the effectiveness of the newly developed AAM. As a result of comparing several binders, it was found that the binder “thermally treated marl—Na(2)SiO(3)” is the most effective, since for specimens based on it, a maximum compressive strength of 42.6 MPa, a flexural strength of 4.6 MPa, and minimum setting time were obtained (start 26 min, end 32 min) as well as a water absorption of 10.2 wt.%. The research results will be of interest to specialists in the construction industry, since the proposed recipes for clinker-free cements are an alternative to expensive and energy-intensive Portland cement and provide the creation of strong and durable concrete and reinforced concrete composites. MDPI 2022-09-22 /pmc/articles/PMC9572227/ /pubmed/36233917 http://dx.doi.org/10.3390/ma15196576 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mintsaev, Magomed
Murtazaev, Sayd-Alvi
Salamanova, Madina
Bataev, Dena
Saidumov, Magomed
Murtazaev, Imran
Fediuk, Roman
Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title_full Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title_fullStr Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title_full_unstemmed Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title_short Structural Formation of Alkali-Activated Materials Based on Thermally Treated Marl and Na(2)SiO(3)
title_sort structural formation of alkali-activated materials based on thermally treated marl and na(2)sio(3)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9572227/
https://www.ncbi.nlm.nih.gov/pubmed/36233917
http://dx.doi.org/10.3390/ma15196576
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