Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality
ABSTACT: Introduction. Research to improve the quality of foam concrete products through targeted control of technological processes of structure formation of cement-based compositions is relevant. The strength of foam concrete is significantly influenced by the adhesion strength of the hardened...
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| Format: | Article |
| Language: | English |
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OOO "CNT «NanoStroitelstvo»
2023-10-01
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| Series: | Нанотехнологии в строительстве |
| Subjects: | |
| Online Access: | https://nanobuild.ru/en_EN/journal/Nanobuild-5-2023/408-417.pdf |
| _version_ | 1797645301640593408 |
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| author | Aleksei B. Steshenko Aleksander I. Kudyakov Aleksandr S. Inozemtcev Sergei S. Inozemtcev |
| author_facet | Aleksei B. Steshenko Aleksander I. Kudyakov Aleksandr S. Inozemtcev Sergei S. Inozemtcev |
| author_sort | Aleksei B. Steshenko |
| collection | DOAJ |
| description | ABSTACT: Introduction. Research to improve the quality of foam concrete products through targeted control of technological
processes of structure formation of cement-based compositions is relevant. The strength of foam concrete is significantly influenced
by the adhesion strength of the hardened cement paste to the aggregate. This article discusses methods of chemical and mechanochemical activation of foam concrete filler with glyoxal-containing additives, interaction with hydration products of binders and
increasing the strength of the contact zone. The quality of foam concrete can be improved by controlling the properties of the
contact zone. Materials and methods. The study was conducted using standard test procedures specified in national standards.
Results. With preliminary chemical and mechano-chemical exposure of the sand surface to glyoxal-containing additives and its
subsequent introduction into the foam concrete mixture the grade of strength of foam concrete increases to B1 while maintaining
the average density grade D500 in comparison with foam concrete of the control composition, while the shrinkage value decreases
by 20–38.5% and thermal conductivity coefficient by 37%. Conclusion. The use of glyoxal-based additives in foam concrete mixtures
by pre-activating the sand surface can improve the quality of cement foam concrete.
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| first_indexed | 2024-03-11T14:44:24Z |
| format | Article |
| id | doaj.art-7792cba66bf24d7c916e172568d7bb4f |
| institution | Directory Open Access Journal |
| issn | 2075-8545 |
| language | English |
| last_indexed | 2024-03-11T14:44:24Z |
| publishDate | 2023-10-01 |
| publisher | OOO "CNT «NanoStroitelstvo» |
| record_format | Article |
| series | Нанотехнологии в строительстве |
| spelling | doaj.art-7792cba66bf24d7c916e172568d7bb4f2023-10-30T13:03:21ZengOOO "CNT «NanoStroitelstvo»Нанотехнологии в строительстве2075-85452023-10-0115540841710.15828/2075-8545-2023-15-5-408-417Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced qualityAleksei B. Steshenko0https://orcid.org/0000-0002-2468-3147Aleksander I. Kudyakov1https://orcid.org/0000-0002-8927-6833Aleksandr S. Inozemtcev2https://orcid.org/0000-0001-7807-688XSergei S. Inozemtcev3https://orcid.org/0000-0002-2965-0846Tomsk State University of Architecture and Building, Tomsk, RussiaTomsk State University of Architecture and Building, Tomsk, RussiaNational Research Moscow State University of Civil Engineering, Moscow, RussiaNational Research Moscow State University of Civil Engineering, Moscow, RussiaABSTACT: Introduction. Research to improve the quality of foam concrete products through targeted control of technological processes of structure formation of cement-based compositions is relevant. The strength of foam concrete is significantly influenced by the adhesion strength of the hardened cement paste to the aggregate. This article discusses methods of chemical and mechanochemical activation of foam concrete filler with glyoxal-containing additives, interaction with hydration products of binders and increasing the strength of the contact zone. The quality of foam concrete can be improved by controlling the properties of the contact zone. Materials and methods. The study was conducted using standard test procedures specified in national standards. Results. With preliminary chemical and mechano-chemical exposure of the sand surface to glyoxal-containing additives and its subsequent introduction into the foam concrete mixture the grade of strength of foam concrete increases to B1 while maintaining the average density grade D500 in comparison with foam concrete of the control composition, while the shrinkage value decreases by 20–38.5% and thermal conductivity coefficient by 37%. Conclusion. The use of glyoxal-based additives in foam concrete mixtures by pre-activating the sand surface can improve the quality of cement foam concrete. https://nanobuild.ru/en_EN/journal/Nanobuild-5-2023/408-417.pdfcement-based foam concreteglyoxal-containing additivesstructure formationplastic shrinkageporositycompressive strengthaverage densitythermal conductivity coefficient |
| spellingShingle | Aleksei B. Steshenko Aleksander I. Kudyakov Aleksandr S. Inozemtcev Sergei S. Inozemtcev Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality Нанотехнологии в строительстве cement-based foam concrete glyoxal-containing additives structure formation plastic shrinkage porosity compressive strength average density thermal conductivity coefficient |
| title | Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| title_full | Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| title_fullStr | Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| title_full_unstemmed | Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| title_short | Controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| title_sort | controlling the structural formation of porized cement composites in the production of thermally efficient enclosure structures of enhanced quality |
| topic | cement-based foam concrete glyoxal-containing additives structure formation plastic shrinkage porosity compressive strength average density thermal conductivity coefficient |
| url | https://nanobuild.ru/en_EN/journal/Nanobuild-5-2023/408-417.pdf |
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