KR840001881B1 - Porous artificial stone - Google Patents

Abstract

To mfr. porous and light weight concrete, saponin and sodium alginate (30-40 %) are put in water (60-70 %) and are allowed to rest for 5-10 hrs. 10 % Polizol (35%, 50-70 ≰C) and 2-4% Ca(OH)2 are added to the above aq. solution, which is agitated. A prepared porous solution, cement, sand, gypsum or fine-grained inorganic substance, or a porous plastic spherical body are mixed in the ratio of 0.5-1 : 1: 2-6 : 0.1-0.3 : 6-12 at 200-500 rpm. Lightweight aggregate used in porous and lightweight concrete is manufd. by mixing the above porous aq. solution 5-15%, water 5-15%, and formed plastics 70-90 %.

Description

Manufacturing Method of Lightweight Concrete and Lightweight Aggregate

The present invention relates to a method for producing foamed lightweight concrete used for light weight, heat insulation, sound insulation, thermal insulation and the like, and a lightweight aggregate used therein. More specifically, a strong foaming liquid prepared by adding a sodium hydroxide or calcium hydroxide by injecting polyazole reacted with warm initial reaction into an aqueous solution of seaweed adhesives such as siponin and sodium alginate and animal protein, and water and foamed plastic spheres or shredders The present invention relates to a method for producing light weight aggregates for mixing light weight aggregates and kneading cement, sand, gypsum or other inorganic fine grains.

Today, the development of high-rise apartments and the increase of noise pollution in large cities have been eager for the development of lightweight building materials with high sound insulation and insulation effect.

It is an object of the present invention to provide a foamed lightweight concrete having excellent working effects that cannot be met by any previously developed building material in this field that can be effectively applied to such a demand.

Conventionally, foam light weight concrete is formed by kneading a metal foaming agent and a gelling agent of a copolymer of vinyl polyacetate and acrylic acid ester in a cement described in Patent Publication No. 68-300. Concrete is rain

In addition, Patent Publication No. 73-56 discloses that lightweight concrete with aggregates from Jeju is made of asphalt emulsion, which is a foam stabilizer, and Jeju mushroom and cement of 20 mesh, which are left at 30 ° C after mixing. The specific gravity is high and the material cost is high, and since there is no bubble formation in the concrete itself, it has the disadvantage that sound insulation, heat dissipation, and heat insulation effect are inferior.

In addition, lightweight aggregates using coal mine waste-rock (Gob No. 67-149) and (80-1054) were developed as lightweight aggregates, or the soil was coated on the surface of spherical foam plastics, or the soil-like mineral fine grains or cement and hardener were added and stirred. Light weight aggregate (column No. 76-466) formed by coating the immersion liquid, and light weight aggregate using the asbestos (Got No. 81-123). Lightweight aggregate cured by depositing dry mortar by mixing and mixing foamed plastic spheroid and heavy oil (Notice 80-1056) has been developed, but the lightweight concrete is manufactured using these lightweight aggregates, and the specific gravity is 1.4-0.7, which is relatively heavy due to the fact that foamed concrete is not formed, and also foamed. The lightweight aggregate coated with soil on the plastic spherical body is used as the aggregate. So, the soil, which is a foreign substance in the mortar, is weakened. Due to the clay layer, which is an intermediate layer, elasticity and light weight are inferior, and the coating of heavy oil on the foamed plastic spheroid not only increases the production cost due to the high cost of heavy fluid materials, but also applies an unbalanced surface layer on the globular surface.

In addition, the use of asbestos-based lightweight aggregates increases the specific gravity of concrete, and also has the disadvantage that the concrete strength is relatively weak and the production cost is high.

In addition, the foam concrete is manufactured using these lightweight aggregates, and the strength is further lowered, thus the practical value is lost, and since the foaming agent must be added separately, the process has an inconvenient closure.

The present invention relates to a lightweight concrete prepared by removing various disadvantages of the related art as described above, and a lightweight aggregate used therein, and the specific gravity of the lightweight concrete is only 0.6-0.4, but in terms of strength, Compared to lightweight concrete, it is not dropped, and the cost is exceptionally low-cost foam lightweight concrete, and the manufacturing process is very simple to provide a very convenient foam lightweight concrete for construction, and also cement cement time It is shortened, and provides excellent foam lightweight concrete with excellent sound insulation, insulation, and heat insulation, thereby providing foam lightweight concrete having extremely excellent performance as a floor partition material or a wall partition material of a multilayer apartment or a town house.

Foam lightweight concrete and lightweight aggregate of the present invention is prepared as follows.

First, 30-40% of the adhesive substance such as sodium alginate and samonine powder is added to 60% to 70% of water to make a solution. Allow it to dissolve for 5-10 hours or more.

Next, the initial reaction occurs by heating the 35% polyazole to about 50 ° C.-70 ° C., adding about 10% of the polyazole to the aqueous solution, stirring the mixture, and adding about 2-4% of sodium silicate or calcium hydroxide. By mixing, a foamable solution having excellent adhesion of the present invention is completed.

CMC may be used instead of the sodium alginate. When using CMC, the ratio of water and CMC should be about 90:10.

The foamed solution prepared in this way can be stored and used for a long time.

Cement, sand, some gypsum or mineral fine granules, Schiropol spheroids or Schiropol crushed products and water are mixed into the foamed solution prepared as described above in a mixer and kneaded at a speed of 200-500 RPM to form a mold or other necessary materials. When injected into the to obtain a foamable lightweight concrete of the present invention.

At this time, the ratio of cement and water is about 1: 0.7-1.2, and the ratio of water and foaming solution is about 1: 6-10, and the ratio of cement: sand: schiropol is generally 1: 2-6: 6-12. Mix with

In addition, in the above-mentioned method for manufacturing light-weight foam concrete, foamed plastic spherical bodies such as Schiropol spheroidal liquid, the foaming solution and some water are mixed in a mixer, and the foamed lightweight concrete aggregate is manufactured in advance to prepare cement and cement. Sand and some gypsum or inorganic fine granules and the above-mentioned aggregates for foam lightweight concrete and water prepared as described above are introduced into a mixer, kneaded, and then injected into a mold or a predetermined place to obtain the foam lightweight concrete of the present invention. do.

At this time, the ratio of the foamed solution in which the expanded plastic sphere and some water are mixed is approximately 8: 0.5-1.5.

That is, for example, a mixture of about 0.5 liter of a foaming solution and about 0.5 liter of water in a foamed plastic spherical body or about 80 liters of crushed material is mixed in a mixer to obtain an aggregate for foaming lightweight concrete. And the mixing ratio of cement and sand and the foam light aggregate in the production of concrete is about 1: 2-6: 6-12 ratio.

The foamed lightweight concrete prepared in this way is uniform and fine pores are formed therein, and the foamed plastic spherical body is evenly distributed, so that it is possible to obtain very good foam and lightweight concrete, and has a very good strength. Ultra-light foam concrete with specific gravity of only 0.6-0.4 is obtained.

As a result, the separation of materials generated during kneading in a mixer due to the aggregation phenomenon or the light specific gravity of the plastic spherical body caused by static electricity, which has been a problem when attempting to manufacture the concrete using foamed plastic spherical aggregates in aerated concrete It is possible to obtain excellent foam lightweight concrete overcoming the phenomenon, and to achieve the various objects described above.

In the present invention, aluminum powder, zinc powder, magnesium powder, etc., which are metal powder foaming agents, may be treated with polyacetic acid, which is a surface active material, and used as a coating material for foamed plastics.

Claims (2)

30% to 40% of saporin and sodium alginate were added to 60% to 70% of water, and left for 5-10 hours to form an aqueous solution. Then, 35% of the polyazole was heated to about 50 ° C to 70 ° C. When appearing, the mixture was stirred to add about 10% to the demanded liquid and added about 2 to 4% of calcium hydroxide to prepare a foamed solution, and the prepared foamed solution, cement, sand, some gypsum or inorganic fine granules, and foaming. Plastic globular or crushed water and cement: sand: gypsum: foamed plastic globular: foaming solution: water ratio of about 1: 2-6: 0.1 ~ 0.3: 6-12: 0.5-1: 0,5- Method for producing light-weight concrete foam, characterized in that consisting of the step of producing concrete by mixing at a rate of 200 to 500 RPM at a ratio of 1. 30% to 40% of saponin and sodium alginate were added to 60% to 70% of water, left for 5-10 hours to dissolve to form an aqueous solution. Then, 35% of the polyazole was heated to about 50 ° C to 70 ° C to give an initial reaction. When the mixture is added to the solution in an amount of about 10%, the mixture is stirred, and about 2 to 4% of calcium hydroxide is added. About 5 to 15% of the foamed aqueous solution, about 5 to 15% of water, and about 70 to 90 of foamed plastic spheres or breakers Lightweight aggregate for foam lightweight concrete manufactured by mixing%.