SU1204597A1 - Mixture for producing arboreous concrete - Google Patents

Description

Ichobretennoe refers to the production of light concrete type of arbolita based on mineral living and wood filling in the form of shredded, chips, etc. and can be used in the production of related materials from crushed wood and mineral binder, such as fibrolite, xylolite, etc.

The purpose of the invention is to accelerate the hardening of the mixture while reducing the cost of production.

Hydrated lime is introduced in the form of milk of lime or paste to convert water-soluble wood sugars to calcium sugars and reduce the slowdown in the hydration of besalit due to the adsorption of water-soluble substances on the grains.

Veselit is a belitosulfo-aluminate staple, does not include alite, which is susceptible to poisoning by extractive substances of wood, therefore, the strength and other indicators of arbolite depend little on the content of extractive substances in the wood.

Example 1. In the laboratory conditions arbolitovye

Vesalit, g 370 {3.7 Shredded, g 200 (2.0 Pre-crushed crushed with lime 5 lump, containing 33.5 g (0.3 parts by weight) hydrated lime (.0 parts by weight of CaO) s 150 g (1, 5 weight of water, added to this mixture and the required amount of water 10 V / V 0.95 (3.50 weight parts). Pre compressive strength after 1 28 days 8.16 and 26 kgf / cm, respectively .

Example 3. Made 15 cubes of arbolita in the form of cubes of rum 15x15x15 cm from a shredded meat prepared from unseasoned wood, and besalit with a properly processed 20 thick slurry (paste) lime with water. Moisture you 50%.

The consumption of the components of the arbol per 1 cube is as follows: 25 Besalit, g 1220 (3.6 in Droblenka, g 780 (2.2 in. Droblenka was treated with paste of 230 hydrate lime (0.66 wt.

cubes of 10x10x10 cm in size on besazo Ca (OH) or 0.5 weight.h. Cao) and

360 (3.6 weight, h) 220 (2.2 weight.h.)

Lit M 400 and the basis of crushed fraction of 2-15 mm. Consumption of components as follows: Besalit, g Droblenka aspen. , g Lime hydrate 10 (0.1 wt. h,) in the form of milk of lime 52%., g Water irrigation In / B was 0.9 (water 3.3 wt. h.) The strength of cubes after 1, 7 and 28 days of curing were 10 and 21 and 26 kgf / cm, respectively.

Example 2. Arbolite cubes were made from besalite and mixed-sized crushed rock with a predominance of aspen 10x10x10 cm. Consumption of components for one sample consisted of:

Weightlite, g 370 {3.7 weight, h.) Crushed, g 200 (2.0 weight, h.) The pre-crushed meat was mixed with lime milk, containing 33.5 g (0.335 weight.h.) hydrated lime ( .0.25 parts by weight of CaO) with 150 g (1.5 parts by weight) of water. Besapit and the required amount of water are added to this mixture to B / B 0.95 (3.50 parts by weight). Compressive strength after 1.7 and 28 days is 8.16 and 26 kgf / cm, respectively.

Example 3. Samples of arbolite were made in the form of cubes 15x15x15 cm in size from crushed material prepared from unripened aspen wood and besalit with a pre-processed crushed thick slurry (paste) of hydrated lime with water. Moisture paste 50%.

The consumption of the components of arbolita per 1 cube is as follows: Besalit, g 1220 (3.6 parts by weight), Droblenka, g 780 (2.2 parts by weight) The crushed material is treated with lime powder consisting of 230 g of hydrated lime ( 0,66 weight.h.

Ca (OH) or 0.5 weight.h. Cao) and

the same amount of water. The total amount of water is 3.6 parts by weight.

The compressive strength was determined after 1.7 and 28 days, which amounted to 17.27 and 30 kgf / cm, respectively. The strength achieved by arbolite for 1 day is almost four times higher than the strength of arbolit of ordinary types on Portland cement, which allows increasing the turnover of the park of molds by an appropriate number of times and reducing the metal consumption for their manufacture.

The strength indicators of the proposed wood concrete with the use of freshly blasted aspen in comparison with the indicators of wood concrete from the lime mixture, in which the used aspen is used, are given in the table.

The compositions according to examples

one

2 3 Prototype

Compiled by N. Kosheleva Editor A. Dolinich Tehred T. Tupik Corrector M. Maksimishinets

Order 8489/24 Circulation 604 Subscription

VNSHPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

Compressive strength, kgf / cm,

in a day

7 28

10 8 17 2

21 16 27 8

26 26 30 21

Claims (1)

MIXTURE FOR THE PRODUCTION OF ARBOLITE, including crushed wood, mineral binder, additives and water, characterized in that, in order to accelerate the hardening of the mixture while reducing the cost of production, it contains besalit with an additive of hydrated lime in the following ratio of components, in May .h: Shredded wood 2.0-2.2 Besalit 3.6-3.8 Hydrated lime 0.1-0.66 Water 3.30-3.60