Modified gypsum binder

N. V. Kondrateva, L. V. Moroz, V. Yu. Moroz, A. I. Begun

Abstract


Statement of the problem. A disadvantage of the gypsum binder is the limited water resistance of products that historically led to the use of gypsum products mostly for internal construction and finishing works. To regulate the process of hydration and structure formation of the use of chemical additives that are introduced with the mixing water or in the production of the binder. As a rule, substances that increase the solubility of the gypsum binder referred to as the hardening accelerator, and substances which retard the solubility of the inhibitors of hardening of the mixture. Most accelerators and retarders hardening affect adversely on the final strength of the mixture. More effective impact on gypsum binder additives have plasticizers. The purpose of the article. Getting gypsum binder modified with the aim of improving its water resistance and improvement of some technological factors (the time of hardening, water gypsum ratio, etc.) would reduce its shortcomings and expand the scope of application of the binder. Conclusion. The result of the research reviewed changes in the basic properties of the gypsum binder with the introduction of additives, plasticizers, and selected the most effective supplements to significantly reduce water gypsum ratio, to improve strength properties and to obtain gypsum binder more dense structure.


Keywords


gypsum binder; additives; plasticizers; impact; modification; properties

References


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GOST Style Citations


Влияние добавок на схватывание, твердение и формирование структуры гипсовых вяжущих веществ // ГРИСстрой. Новые технологии. Гипсовые материалы и изделия. Технологии работ. – Режим доступа: http://www.grisstroy.ru/component/content/article/538.html.

 

В’яжучі речовини / Р. Ф. Рунова, Л. Й. Дворкін, О. Л. Дворкін, Ю. Л. Носовський. – Київ : Основа, 2012. – 448 с.

 

Пащенко О. О. В’яжучі матеріали / О. О. Пащенко, В. П. Сербін, О. О. Старчевська. – Київ : Вища школа, 1995. – 416 с.

 

Будівельні матеріали. В’яжучі гіпсові. Технічні умови : ДСТУ Б В.2.7-82:2010. – Чинний від 2011-03-01 ; на заміну ДСТУ Б В.2.7-82-99, РСТ УССР 1599-79. – Київ : Мінрегіонбуд України, 2010.

 

Твердение строительного гипса // ВосЦемПродукт. Строительные вяжущие материалы, технологии производства и применение вяжущих материалов. Гипсовые вяжущие вещества. – Режим доступа: http://www.voscem.ru/articles/vyagugie-materialy/gips/tverdenie/



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