DOI: https://doi.org/10.32347/2707-501x.2020.43.74-85

Analysis of efficiency of use of formers for gas concrete with various physical-mechanical and structural characteristics

V. Gots, P. Palchik, S. Palchik, O. Sanakoev

Abstract


The development of the market of gas-forming agents takes place in a market economy amid increasing demands on the quality, safety, environmental friendliness and cost-effectiveness of their use. The main blowing agent used at cellular concrete production facilities is pigmented aluminum powders and aluminum pastes.

The article provides a comparative description of various types of blowing agents in accordance with specific production conditions.

The quality of cellular concrete products largely depends on the reactivity of the used aluminum and on how much it corresponds to the production process, depending on the reactivity of the raw materials.

A very important parameter is the stability of the technical characteristics of aluminum pastes over time. This characteristic is very important for ensuring the storage of the paste, its safety during transportation and storage in the warehouse.

Depending on the required structure of aerated concrete, coarser or finer powder is used in production. The higher the average density of the product, the coarser the powder should be used. If necessary, you can make powder with any time the start of the reaction of gas formation.

The stability of the technological process for the production of cellular concrete products and, as a consequence, the minimization of the amount of substandard products depend to a large extent on the reactivity of the used aluminum and on how much it corresponds to the production process depending on the reactivity of the raw materials. The reactivity of aluminum powder depends on the particle size of aluminum, the structural characteristics of its surface and the properties of the protective film.

During the experimental studies, a study was made of the characteristics of aluminum powder of the Ukrainian manufacturer PAP-1 and aluminum paste ALBApor308B (Romania).

Based on the analysis of the influence of the considered technical characteristics of aluminum pastes on the course of the technological process and the complex of technical and environmental factors (the cost of the paste, the effectiveness of its use, environmental factors), preference is given to aluminum paste made in Romania by «Alba» company

Keywords


aluminum paste; aluminum powder; gas evolution; reactivity; production process; hydrogen; average density; plastic strength; aerated concrete;

References


Runova, R.F., Velichno, T.P. & Chernyavsky V.I. (1981). Increasing the durability of autoclaved systems by directional synthesis of hydrosilicates. Durability of structures made of cellular concrete.

Ayler, R.K. (1959). Kolloidnaya khimiya kremnezema i silikatov [Colloidal chemistry of silica and silicates]. Moscow, Gosstroyizdat

Yates, D. (1964) Molekulyarnaya spetsifichnost' v fizicheskoy adsorbtsii [Molecular specificity in physical adsorption]. Catalysis. New physical research methods. pp. 253-307

Deryagin, B.V., Karasev V.V.& Zorin Z.M. (1954). Stroyeniye i fizicheskiye svoystva veshchestva v zhidkom sostoyanii [The structure and physical properties of a substance in a liquid state]. Kiev, KSU Publishing House

Deryagin, B.V. (1971). Novyye svoystva zhidkostey: sverkhplotnaya voda [voda ІІ] [New properties of liquids: superdense water [water ІІ]]. Moscow, Science

Mitsyuk G.M. (1971). Vzaimodeystviye kremnezoma s vodoy v gidrotermal'nykh usloviyakh [Interaction of silica with water in hydrothermal conditions]. Kiev, Naukova Dumka

Ukhova, T.A. (1990). Ob osnovnykh napravleniyakh nauchnykh issledovaniy v oblasti izgotovleniya yacheistykh betonov [About the main directions of scientific research in the field of manufacturing cellular concrete]. Tez. dokl. nauchn. tekhn. seminara. pp. 3-5.

Sazhnev, N.P. (1990). The technology of production of cellular concrete products. Theory and practice. Minsk: Strikino.

Sakharov, G.P., Bataev, S.O. & Popov, K.I. (1981).Technological methods for increasing the reliability of cellular concrete products. Durability of structures made of cellular concrete.

Isakova, I.M., Meinert, G.O., Orlov, V.N., Ilyicheva G.V.& Rudoi A.P. (1990). Efficiency of using synthetic surfactants for the production of aerated concrete by impact technology. Development of production of products from aerated concrete.


GOST Style Citations


1. Рунова Р.Ф., Велично Т.П., Чернявский В.И. Повышение долговечности автоклавированных систем путем направленного синтеза гидросиликатов // Долговечность конструкций из ячеистого бетона. – Таллинн, 1981.

 

2. Айлер, Ральф К. Коллоидная химия кремнезема и силикатов [Текст] / Ральф К. Айлер ; пер. А.Н. Бойкова [и др.]; ред. пер. Н.А. Торопов. – М.: Госстройиздат, 1959. - 288 с.

 

3. Йетс Д. Молекулярная специфичность в физической адсорбции // Катализ. Новые физические методы исследования. – М.: Мир, 1964. – с. 253-307.

 

4. Дерягин Б.В., Карасев В.В., Зорин З.М. В кн.: Строение и физические свойства вещества в жидком состоянии. – К.: Изд-во КГУ, 1954. – с. 141-159.

 

5. Дерягин Б.В. Новые свойства жидкостей: сверхплотная вода [вода ІІ] / Дерягин Б.В., Чураев Н.В. – М.: Наука, 1971. – 176 с.

 

6. Мицюк Б.М. Взаимодействие кремнезёма с водой в гидротермальных условиях. – К.: Наукова думка, 1974. – 87 с.

 

7. Ухова Т.А. Об основных направлениях научных исследований в области изготовления ячеистых бетонов // Тез. докл. научн. техн. семинара. – Челябинск, 1990. – с. 3-5.

 

8. Сажнев Н.П. Технология производства ячеистобетонных изделий. Теория и практика. – Минск: Стрикино, 1999. – 288 с.

 

9. Сахаров Г.П., Батаев С.О, Попов К.И. Технологические способы повы-шения надежности изделий из ячеистого бетона // Долговечность конструкций из ячеистого бетона. – Таллинн, 1981.

 

10. Исакова И.М., Мейнерт Г.О., Орлов В.Н., Ильичева Г.В., Рудой А.П. Эффективность применения синтетических ПАВ для производства ячеистого бетона по ударной технологии // Развитие производства изделий из ячеистого бетона. – Челябинск, 1990.





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