SU1622332A1 - Wood-fibre concrete mix - Google Patents

Abstract

This invention relates to raw materials for making arbolite. In order to increase the strength, expand the raw material base of the production of wood concrete, reduce the cost, the arbolnt mixture contains the following components, kg / m: portland cement 270-390; wood shredder 140-240; defect 27-78, Arbolit, made from the proposed mixture, has an average density of 450-653 kg / m, compressive strength 0.47-1.87 MPa, water absorption 46-85%, frost resistance 23-26 cycles, thermal conductivity 0.092-0.131 Bt / m ° C. 1 tab.

Description

This invention relates to raw materials for making arbolite.

The purpose of the invention is to increase the strength, expand the raw material base for the production of wood concrete and reduce costs.

To prepare the mixture, waste-defecate is used, which is obtained in sugar factories after purifying the juice (syrup). Its amount is 10-15% of the mass of sugar produced. The waste is disposed of with the water. After drying, it takes on the appearance of an earthy mass, which, after drying, is easily scattered into the powder.

The bulk density of the defect is 750–900 kg / m3, the specific surface is 4300– 3000 cmg / g. Defekat is a brownish-yellowish-earthy powder, which is obtained by cleaning lime with sugar. The chemical composition of the defecate, wt.%: SiOg. 3.5-2.75; + Fe203 2.75-1.80;

CaO 48.5-46.0; MgO 1.0-1.2; SO-, 0.5- 0.4; hydrated water is 5.0-4.5, loss on ignition is 46-44, recalculated to CAS03 89-84.0.

Example. The wood shredder with a moisture content of 12–18% that has been removed with a volume-weight dispenser is loaded into a forced-action mixer with a ready-mix batch volume exceeding the volume of the molded product. Then served deLekat and 1/3 of the water. The mixture is peepeshpuyut for 30 s, then incubated for 8-10 min to neutralize the organic BPDICCTB, harmful to the setting of the cement. Then the cement and the rest of the water is pounded into the mixer. The prepared mixture is placed in molds and compacted on a shock-shaking unit for 30-70 seconds with prigrueom or no prigruz (depending on the desired average density and strength).

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WITH

m

ae

SLE

with y

Hardening of products up to destructive strength occurs in a room with a temperature of 2012 ° C and with a relative air humidity of 65-70 Å. The sediment cone of the mixture is about Osm.

According to the described technology, mixtures are prepared, the composition and properties of which are listed in the table.

The proposed wood concrete products JQ have a water absorption of 46-85%, a frost resistance of 23-26 cycles, a thermal conductivity coefficient of 0.092-0.131 W / mK. Pho. rmula of invention

Arbolite mixture containing 5 Portland cement, organic aggregate, chemical additive and water, characterized in that, in order to increase the strength, expand the raw material base of the production of arbolit, reduce the cost, it contains, as an additive, de Acacate and aneast waste sugar production in the following ratio, kg / me:

Portland cement 270-390 Wood shredder - organic filler140-240 Defek27-84 Water Else

extendable

)

2

3

four

five

6

7

the famous

eight

Q

270 270 280 390 390 390 330

270 390

140 140 170

240 240 240 200

Calcium chloride 140 5 243 240 8 351

0.47

0.498

0.579

1.67

1.66

1.87

1.86

455,620

0.447 0.95

Claims (1)

The claims Arbolite mixture containing 15 Portland cement, an organic filler, a chemical additive and water, characterized in that, in order to increase strength, expand the raw material base of the production of arbolite, reduce cost, it contains as an additive DeFecate lime-containing waste from sugar production in the following ratio kg / m ^e : Portland Cement 270-390 Organic wood chippings - carrier 140-240 Defecate 27-84 Water Rest Composition Consumption, kg / m ⁵ Defecate Water Density, kg / m ^e Strength MPa Portland cement Wood chippings Offers pulled 1 270 140 27 243 450 0.47 2 270 140 40.5 243 452 0.498 3. 280 170 84 253 501 0.579 4 390 240 39 351 653 1,67 5 390 240 58.5 351 652 ' 1.66 6 390 240 78.0 351 650 1.87 7 330 200 . 66 297 £ 50 1.86 Famous - ny Calcium chloride 8 270 140 5 243 455 0.447 9 390 240 8 351 620 0.95 Co-creator N. Shchekina,