SU1204598A1 - Raw mixture for producing arboreous concrete - Google Patents

Description

The invention relates to the production of arbolite - lightweight concrete with aggregate from crushed wood and can be used in the manufacture of related materials differing in the method of preparation of wood filler, the amount and ratio between wood and hopper;

The purpose of the invention is to obtain fast-hardening and durable wood concrete from uncured wood of any species while reducing the consumption of cement and the use of low-aggressive components of the raw mix.

The raw meal according to the invention is prepared as follows.

Example 1. A preparation is prepared for the manufacture of light wood concrete arbolite. Crushed from freshly chopped wood of mixed species was used as a filler, including 60% of hardwood, with a humidity of 100 abs.%.

Take it on the batch: kg%

Wood

abs. dry, 5.47 24.7

, Portland Cement M 4004.76 2, 5

Lime in

recalculated

CaO2.49 1 1.5

Chloride

calcium

waterless 1.07 4.8

Water8.32 37.5

Lime was previously quenched, dry hydrated lime was mixed with wood, then ground calcium chloride, cement, and water were added. Cubes of 15x15x15 cm were formed from the mixture obtained. The average strengths of cubes under compression: after 6 kgf / cm after 28 days 32 kgf / cm.

Example 2. In the laboratory conditions arbolite samples 5x15x15 cm in size were made of larch wood obtained from a woodworking workshop (lath).

A fraction of 2–10 mm was used to prepare the samples. Take something on a batch based on 7 samples - cubes:

kg

%

6.2

26,

045982

Cement

M 4005.5, 23.1

Lime-boil young 5 and 2.5 10.5

Chloride

calcium

100% 0.87 3.7

Water8.7 36.6

10 The average compressive strength of two samples for 1.7 and 28 days 8, 26, 48 kgf / cm, respectively.

Example 3. Experienced arbolite panels with a filler in the form of unripened wood screening of process chips containing 55% of larch are manufactured under production conditions.

Manufactured products of two compositions of the 20 mineral part per 1 m:

Composition 1 Composition 2

Cement,

kg200 300

Lime,

kg105 50

Chloride

calcium,

kg45 25

Wood240 .240

Compositions taking into account the water content of the water, the ratio of water / in -. Survival 1.0 the following,%:

25

thirty

Composition 21.3 11.2

Composition 2 30.3 5.0

Cement Lime Chloride

Calcium 4.8 2.5 Wood 37.2 38.0 Water25.5 24.2

When stripping out after 20 hours, the products had sufficient strength and were lifted by the mounting loops, while the products of current production, made from the same raw material with additives of aluminum sulphate and chloride, calcium did not harden during this time and could not be removed. from the forms.

Kubikov's strength of products after 3 and 7 days of arbolite of composition 1 is 8.0 and 16.8 kgf / cm, and composition of 2 - I, O and 17.7 kgf / cm

The quality indicators of the product of composition 1 for the cut samples after 3 months of storage are as follows:

Kubikov strength (average), kgf / cm Kubikov strength in the water-active state during prolonged soaking until constant

26

16.8

04598Л

Axial compression (average) kgf / cm 32.1

Strength at 5 stretch,

kgf / cm 5,6

Most of the quality indicators exceed the regulatory requirements of 1Q for the P-guide for the design and manufacture of arbolite products.

3

Larch is unseasoned

Larch ripened

A mixture of species, 550% larch: unsaturated

Claims (1)

RAW MATERIAL MIXTURE FOR PRODUCING ARBOLITE, including crushed wood, mineral binders, additives and water, characterized in that, in order to obtain a quick-hardening and durable wood concrete from unstable wood of any species while reducing cement consumption and using non-aggressive components of the raw mix, it contains as part of a mineral binder and additives, powdered lime and calcium chloride in the following ratio of components, wt.%: Shredded wood ^ abs. dry) 24.7-38.0 Mineral burning 21.5-30.3 Powdery lime 5.0-11, 5 Cal chloride tion 2.5-4.8 Water 24.2-37.5 SU „„ 1204598