jamtJournal of Advanced Materials and TechnologiesJournal of Advanced Materials and Technologies2782-21922782-2206ФГБОУ ВО «ТГТУ»10.17277/jamt.2023.04.pp.316-323jamt-54Research ArticleСовременные конструкционные материалы, материалы для экстремальных условийAdvanced structural materials, materials for extreme conditionsОценка влияния комплексной наномодифицирующей добавки «лигносульфонат / оксид графена» на процесс гидратации неавтоклавного газобетонаEvaluation of the effect of a complex nanomodifying additive “lignosulfonate / graphene oxide” on the non-autoclaved aerated concrete hydration processhttps://orcid.org/0000-0002-8248-5050АльджабубиД. З.М.AljaboobiD. Z.M.

Альджабуби Дхафер Зейд Мохаммед, инженер, ООО «АМА», соискатель

ул. Советская, 106/5, пом. 2, Тамбов, 392000

Dhafer Z. M. Aljaboobi, Engineer, AMA LLC, PhD candidate

Bld. 2, 106/5, Sovetskaya St., Tambov, 392000

aldjabubi.dzm@mail.tstu.ruhttps://orcid.org/0000-0003-0850-9365БураковаИ. В.BurakovaI. V.

Буракова Ирина Владимировна, кандидат технических наук, доцент

ул. Советская, 106/5, пом. 2, Тамбов, 392000

Irina V. Burakova, Cand. Sc. (Eng.), Associate Professor

Bld. 2, 106/5, Sovetskaya St., Tambov, 392000

iris_tamb68@mail.ruhttps://orcid.org/0000-0003-4871-3504БураковА. Е.BurakovA. E.

Бураков Александр Евгеньевич, кандидат технических наук, доцент

ул. Советская, 106/5, пом. 2, Тамбов, 392000

Alexander E. Burakov, Cand. Sc. (Eng.), Associate Professor

Bld. 2, 106/5, Sovetskaya St., Tambov, 392000

m-alex1983@yandex.ruЯркинВ. О.YarkinV. O.

Яркин Владимир Олегович, студент

ул. Советская, 106/5, пом. 2, Тамбов, 392000

Vladimir O. Yarkin, Student

Bld. 2, 106/5, Sovetskaya St., Tambov, 392000

sttstu90@gmail.comТамбовский государственный технический университетРоссияTambov State Technical UniversityRussian Federation20231402202684316323Copyright © Альджабуби Д.З., Буракова И.В., Бураков А.Е., Яркин В.О., 20262026Альджабуби Д.З., Буракова И.В., Бураков А.Е., Яркин В.О.Aljaboobi D.Z., Burakova I.V., Burakov A.E., Yarkin V.O.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://jamt.elpub.ru/jour/article/view/54

Проведена оценка влияния различных пластифицирующих и структурообразующих добавок на процесс гидратации неавтоклавного газобетона (НГБ). Разработана методика формирования НГБ с введением следующих модификаторов: лигносульфоната (ЛС), оксида графена (ОГ) (1 % водная суспензия) и комплексной добавки – ОГ/ЛС. Формирование структуры и исследование минеральных новообразований в цементном камне в результате гидратации проводились методом рентгеноструктурного и дифференциально-термического анализа. Согласно рентгеновской дифрактометрии, газоблоки всех составов содержат кварц, тоберморит, гидрогранаты кальция, ксонотлит, C–S–H(I), кальцит. Дифрактограмма образца с добавкой ОГ/ЛС показывает, что НГБ содержит, прежде всего, высокоинтенсивные отражения тоберморита, ксонотлита, а также C–S–H и кальцита. Для всех остальных образцов НГБ характерна более низкая интенсивность рефлексов указанных гидросиликатов кальция. ТГ- и ДСК-кривые для всех исследуемых газоблоков имеют схожий характер – 3 ступени потери массы, кроме контрольного образца. Газобетон без добавок при температуре около 100 °С теряет 0,96 % массы, с добавкой ЛС – 1,20 %, ОГ – 1,35 %, комплексной добавки – 1,72 %. В интервале температур 400…500 °С появляется эндотермический эффект, который говорит о дегидратации слабозакристаллизованных гелеобразных гидросиликатов и гидрогранатов кальция. Именно этот пик отсутствует у контрольного образца. Таким образом, по результатам диагностики установлено, что комплексная модифицирующая добавка увеличивает кристалличность продуктов гидратации затвердевшего НГБ. Результаты позволяют предположить, что модифицированный НГБ, содержащий комплексную добавку, является более стабильным и функциональным в процессе эксплуатации, чем сравнительные образцы бетона традиционного состава без такой добавки.

The article evaluates the influence of various plasticizing and structure-forming additives on the hydration process of non-autoclaved aerated concrete (NAC). The authors have developed a method for the NAC formation with the introduction of the following modifiers: lignosulfonate (LS), graphene oxide (GO) (1 % aqueous suspension) and a complex additive – GO/LS. The formation of the structure and the study of new mineral formations in cement stone as a result of hydration were carried out by X-ray diffraction and differential thermal analysis. According to XRD-analysis, gas blocks of all compositions contain quartz, tobermorite, calcium hydrogarnets, xonotlite, C–S–H(I), and calcite. The diffraction pattern of the sample with the addition of GO/LS shows that NAC contains, first of all, high-intensity reflections of tobermorite, xonotlite, as well as C–S–H and calcite. All other NAC samples are characterized by a lower intensity of reflections of the indicated calcium hydrosilicates. TG- and DSC-curves for all studied gas blocks have a similar character – 3 stages of weight loss, except for the control sample. Aerated concrete without additives at temperatures up to 100 °С loses 0.96 % of its weight, with the addition of LS – 1.20 %, GO – 1.35 %, and complex additive – 1.72 %. In the temperature range of 400–500 °С, an endothermic effect appears, which indicates the dehydration of weakly crystallized gel-like hydrosilicates and calcium hydrogarnets. It is this peak that is absent in the control sample. Thus, based on the diagnostic results, it was established that the complex modifying additive allow to increase of the hydration product crystallinity of the hardened NAC. The results suggest that the modified NAC containing a complex additive is more stable and functional during operation than comparative samples of concrete of a traditional composition without this additive.

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The authors declare that there are no conflicts of interest present.