SU1196349A1 - Arboreous concrete mixture - Google Patents

Abstract

ARVOLIGOVA MIXTURE, including binder, wood and fine aggregates, additives and water, characterized in that. in order to simplify the process, save materials and improve the compressive strength of products, it contains as a binding waste from the production of primary acetate, phosphogypsum as a fine aggregate, and spent additive as an additive, in the following ratio, wt.%: Waste acetate production15-21 Wood filler28-35 Phosphogypsum25-40 Spent sovet 7-14 Water 5-10 (L

Description

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The invention relates to the industrial construction materials and can be used in the manufacture of arbolite products and structures.

The aim of the invention is to simplify the process, save materials and increase the compressive strength of products.

Products from arbolite mixture contain, wt.%: Waste production of primary acetate 15-21; wood filler 28-35; phosphogypsum 25-40; spent council 7-14; water 5-10.

To form the mixture, the main components are the waste production of primary acetate, formed during the filtration process, as a result of clogging of filters, which is a hard, creamy mass, and after curing in the form of lumps is thrown into dumps. Srednk 1 chemical composition of the following waste, MA. L: triacetylcellulose 20; methylene chloride 71; ethyl alcohol 8.4 and other impurities 0.6. The polymerization time of waste: the beginning of 10-20 minutes, the end of 3-4 hours. Hardening and growth of strength are practically observed up to 10-12 hours. In addition, in the proposed mixture, wood filler is used in 1 well sawdust with a particle size of 1-2 mm and as shavings with a thickness of 0.1-0.3 mm and a length of 20-30 mm, introduced in a 1: 2 ratio.

In order to impart plasticity to the mixture and improve the molding properties, phosphogypsum is used as a fine aggregate — a natural unprocessed waste from the production of phosphoric acid with the following chemical composition 1, wt%: Si02 0.2; , 0,2; 0.4; CaO 32.5;

49 .2

RgO 0.2; SO, 45.1; R., 0 0.4: water and loss on ignition 21.0. The specific surface (according to Tovarov) is 2000, the bulk density is

900 kg / m. .

As an additive, which increases the fire resistance and reinforcement of the proposed mixture, used waste asbestos-containing

fibrous waste, crushed to a fiber length of 2-20 mm, the following chemical composition, wt.%: MgCOj 38,01; CaCO 45.20; SiO 7.12; MgO 7.00; ., 0.13; , 0.10; water

related 2.44.

Example. First, wood filler is mixed with each other and spent sovelit for

5-10 min. Natural phosphogypsum (45-50% moisture) is introduced and mixed until the phosphogypsum particles are evenly distributed between the aggregates for tO-15 minutes. Then mass

It is necessary to moisten with 5-10% amount of water (to improve mixing with the binder) and mix for 2-3 minutes. Then, at the last stage of the mixture preparation,

binder with the final mixing of the mass for 5 minutes (depending on the amount of work - it can be no more than 10-15 minutes). By the method of plastic pouring molded samples - cubes

dimensions 100x100x100 mm, which after 1-1.5 hours, is molded and dried. After drying the material at 60 ° C for 1 cyTi, the residual moisture is 4-5%. The table presents the optimal compositions of mixtures and indicators of the properties of the material on the proposed solution and the prototype.

Waste production of primary acetvla

wood filler

Phosphogypsum

Spent sovelit

21

35 25

30 33

14

Compressive strength

MPa

Heat conductivity coefficient, W / (m-K)

Table continuation

1.8-2.3

22

23

0.18

0.20

Claims (1)

ARBOLITE MIXTURE, comprising a binder, wood and fine aggregates, additive and water, characterized in that ,. in order to simplify the process, save materials and increase the compressive strength of products, it contains phosphogypsum as a binder from the production of primary acetate, phosphogypsum as a fine aggregate, and spent sovelite as an additive, in the following ratio, wt.% : Production waste acetate Wood Fill- 15-21 carrier 28-35 Phosphogypsum 25-40 Spent sovelit 7-14 Q © Water 5-10 ω s * eleven