SU1079627A1 - Raw mix for preparing cellular concrete - Google Patents

Abstract

RAW MATERIAL FOR MIXING CONCERNING CELLULAR CONCRETE, including cement, ground quartz sand, aluminum sand, caustic soda, sodium chloride, basalt fiber and wool, which differs from - to - and with the fact that, in order to increase strength, it contains basalt, with basalt, in order to increase strength, it contains basalt, with the aim of enhancing durability, it contains basalt, in order to increase strength, it contains basalt, so that, in order to increase strength, it contains basalt, which is made of basalt, in order to increase durability, it contains basalt, and in order to increase strength, we can find basalt fiber. in the form of low superfine yarns and additionally gypsum and fine amorphous silica in the following ratio of ingredients, wt.% Cement 26.6-28.9 Ground mildoquar-. tsevoy sand .36,2-38,8 Aluminum powder 0, O48D), 051 Corrosive.nit 0,145-0,149 Sodium chloride 0,364-0,382 Low-dispersible super fine basal 0,802-1,450 yarns i Gypsum 1,340-1,490 Fine-dispersed (L amorphous dioxide 1,490-2,6 flint water rest

Description

The invention relates to compositions of the mass of the production line: cellular concrete and can be used in the building materials industry for the production of plastics and structures. The known raw material mixture for the manufacture of cellular concrete, including lime, aluminum grass, ash and asbestos i. A disadvantage of the known mixture is low strength. Cellular concrete 2 is also known. Of the following composition, wt.%: 25.5-30.3 Cement Ground malokvar38, 3-45.0 cent sand 0, O54-O, O56 Aluminum powder 0.15-0.18 Caustic soda 0,357 -0.565 Sodium Chloride Basalt Fiber O, 14-O, 5O Woцаa-Others The technology of this cellular concrete provides for the use of tent and sand, jointly ground to a specific surface of 5,400 O-45OO cm / g, and additives of sodium chloride with continuous basalt fiber. A disadvantage of the known concrete is the low compressive strength and flexural tensile strength. The purpose of the invention is to increase the strength of concrete. This goal is achieved by the fact that the raw mix for the preparation of cellular concrete, including cement, ground low-silica sand, aluminum powder, caustic soda, sodium chloride, basalt fiber and water, contains; basalt fiber is living in the form of low-dispersion superfine yarns and additional gypsum and fine-dispersed amorphous silica with the following ratio of ingredients, wt.%: 26.6-28.9 Cement Ground malvar 36, 2-38, And sand of sand 0.048-0.051 Aluminum powder 0,145-0,149 Caustic soda 0,364-J0,382 Sodium chloride Low super-fine. basal, 802-1,450 tovite yarns 1,340-1,490 Gypsum 6272 Fine-cored amorphous 1,490-2,600 silicon dioxide Else The essence of the invention is as follows. Ground superthin fiber overlaps or fills micro and macro. pores of cement stone. At the same time, it is a substrate for creating on its surface, under the influence of the alkaline environment of a cement gel, neoplasms of hydrosilicates, the crystals of which, embedded in the microstructure of the cement stone, form a monolithic cementing substance. Fibers of the same size of 1 µm can completely transform into a new formation in the vice of low-base hydrosilicates, qualitatively changing the microstructure of the cement stone. Bela soot, as a finely dispersed filler with a size of not more than 20 µm, contributes to the creation of a dense packing interstitial cellular structure of concrete, located in the intergranular. a space consisting of 40-90 micron sand grains. It also increases the total silica content of the concrete. The presence of fluoride compounds and hydrogen ions in the mixture can lead to the formation of the compound H F-, due to the aggressiveness of which the reactivity of the surfaces of the silica grains increases, resulting in an additional production of cement gel of concrete and a decrease in the activity of harmful impurities of micas and clay particles. These factors lead to an increase in the strength of cellular concrete in the proposed compositions up to 16% in the compressive test and in the 33-5O% in the tensile test in bending. The compositions of the known and proposed raw mix and their physico-mechanical characteristics are presented in table. 1 and 2, the economic effect of the invention is to increase the mechanical compressive and flexural strength and reduce cement consumption by 5-6%.

Table 1

sand

new

new

Indicators

7.7 8.3

2.8

73O

28.0 26,629,928,9

42, O 38,837,536,2

0.055 0.0480, O52O, O51

0,16 0,1470,1490,145

0.40 0.3640.3820.370

1.3401.4901.45O

0.36

1,325 0,802 1,450

29, O 28.976 28.235 28.834 2.400 1.490 2.60

table 2

8.0

8.9

3.72 4.13 4.06 760 767 787

Claims (1)

RAW MATERIAL MIXTURE FOR PREPARATION OF CELLULAR CONCRETE, including cement, ground quartz sand, aluminum potsru, caustic soda, sodium chloride, basalt fiber and water, characterized in that, in order to increase strength, it contains basalt fiber in a low-grade superfine additionally gypsum and fine amorphous silicon dioxide in the following ratio of ingredients, wt.%: Cement 26.6-28.9 Ground malokvar-. sand 36.2-38.8 Aluminum powder 0,048-0,051 Caustic 0.145-0.149 Sodium chloride 0.364-0.382 Low dispersed superthin basal yarn threads 0.802-1.450 = Gypsum 1,340-1,490 S T oncocesulfur amorphous dioxide ω silicon 1,490-2,600 Water Rest