KR101277589B1 - method for preparing engineering and construction materials - Google Patents
method for preparing engineering and construction materials Download PDFInfo
- Publication number
- KR101277589B1 KR101277589B1 KR20100043717A KR20100043717A KR101277589B1 KR 101277589 B1 KR101277589 B1 KR 101277589B1 KR 20100043717 A KR20100043717 A KR 20100043717A KR 20100043717 A KR20100043717 A KR 20100043717A KR 101277589 B1 KR101277589 B1 KR 101277589B1
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- South Korea
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- mixtures
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- construction materials
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention is an industrial by-product selected from waste gypsum, waste lime and mixtures thereof; One mineral selected from vermiculite, pearlite, and mixtures thereof; Soil comprising one selected from ocher, clay and mixtures thereof; One foaming agent selected from aluminum, zinc and mixtures thereof; And mixing the composition for construction materials with water, comprising one or more additives selected from hydrated lime, quicklime, bentonite, haemulite, and mixtures thereof to form a mixture. Heating the mixture at 100-120 ° C .; And it relates to a method for producing a civil engineering material comprising the step of drying the heated mixture at 200 ~ 300 ℃.
Description
The present invention relates to a method for manufacturing civil engineering materials.
Waste gypsum from industrial by-products can be classified into phosphate gypsum from fertilizer industry, flue gas desulfurization gypsum from thermal power plants, and titanium gypsum from titanium. Waste gypsum is a huge amount of industrial by-products, which causes natural damage and causes pollution by the release of impurities contained therein. However, waste gypsum is a valuable resource in terms of resource recycling and can be a competent resource. In Korea, as part of the research to improve the quality of waste gypsum and to use it as a useful gypsum resource, research has been conducted to manufacture α-type hemihydrate gypsum from phosphate gypsum by pressurized steam and atmospheric sulfuric acid solution methods. It is true.
In particular, about 50% of waste gypsum is consumed as a raw material for some building materials such as cement coagulant and gypsum board, and the rest is left unattended.
An object of the present invention is to provide a method for producing environmentally friendly construction materials can recycle industrial by-products.
An object of the present invention is to provide a method for manufacturing a construction material that can implement excellent strength and cohesion.
The present invention is an industrial by-product selected from waste gypsum, waste lime and mixtures thereof; One mineral selected from vermiculite, pearlite, and mixtures thereof; Soil comprising one selected from ocher, clay and mixtures thereof; One foaming agent selected from aluminum, zinc and mixtures thereof; And mixing the composition for construction materials with water, comprising one or more additives selected from hydrated lime, quicklime, bentonite, haemulite, and mixtures thereof to form a mixture. Heating the mixture at 100-120 ° C .; And it provides a method for producing a civil engineering material comprising the step of drying the heated mixture at 200 ~ 300 ℃.
The present invention, the composition for construction materials is 20 to 40 parts by weight of the mineral with respect to 100 parts by weight of the industrial by-products; 5 to 15 parts by weight of the soil; 1 to 10 parts by weight of the bubble generator; And it provides a method for producing a civil engineering material comprising 1 to 10 parts by weight of the additive.
The present invention provides a method for producing a civil engineering material, characterized in that the industrial by-products in the form of a powder obtained by drying and heat treatment at 150 ~ 1,000 ℃.
The present invention provides a method for producing a construction material, characterized in that the particle size of the mineral is pulverized to 1 ~ 5mm, and then rapidly heated at 700 ~ 1,200 ℃ peeled and expanded 10 to 15 times.
The manufacturing method of the construction materials of the present invention is environmentally friendly because it can recycle industrial by-products. In addition, the method of manufacturing a construction material of the present invention can implement excellent strength and cohesion.
Hereinafter, the present invention will be described in detail.
The present invention provides a method for producing a construction materials by mixing the composition for construction materials with water, heating and drying.
First, the method of manufacturing a civil engineering material of the present invention includes the step of forming a mixture by mixing the composition for construction materials and water.
The composition for construction materials includes industrial by-products, minerals, soil, bubble generators and additives.
Industrial by-products included in the composition for civil engineering materials include one selected from waste gypsum, waste lime and mixtures thereof. The industrial by-products allow to implement a high strength civil engineering material. In addition, since the industrial by-products are recycled, environmentally friendly construction materials can be implemented.
The industrial by-product is preferably in the form of a powder obtained by drying and heat treatment at 150 ~ 1,000 ℃. When the above-described treatment is applied to the industrial by-products, the hazardous substances contained in the industrial by-products are stabilized. In addition, since the water content is low or eliminated, it is advantageous to mix with water in a later step.
The industrial by-products are preferably waste gypsum derived from phosphate gypsum.
Minerals contained in the composition for civil engineering materials include one selected from vermiculite, pearlite, and mixtures thereof.
The vermiculite is a mineral produced by weathering or hydrothermal alteration of biotite, and water molecules are bound therein, and when heated to a high temperature, numerous pores are formed therein due to bubbles formed by evaporation of moisture inside the mineral, It has the property of expanding up to 20 ~ 40 times.
In addition, the pearlite is obsidian formed when the volcanic rock is rapidly cooled, the water contained therein evaporates and swells when heated to a high temperature, becomes a fine white mineral, acidity is neutral, and there is little nutrient content. Therefore, weeds, seeds, pathogens and pests do not live at all.
In order to express the properties of vermiculite and pearlite as described above, it is preferable that the vermiculite and pearlite are pulverized to have a particle diameter of 1 to 5 mm, and then rapidly heated at 700 to 1,200 ° C. to be peeled and expanded 10 to 15 times. At this time, the separation expansion uses an expansion device made of a known expansion furnace.
When the peeled-expanded mineral as described above is used in the method of manufacturing a civil engineering material, a lightweight civil engineering material can be manufactured without reducing the strength.
The mineral is preferably contained 20 to 40 parts by weight based on 100 parts by weight of industrial by-products. When the above-mentioned range is satisfied, lightweight construction materials can be produced without deteriorating the strength.
Soil included in the composition for construction materials includes one selected from ocher, clay and mixtures thereof. The soil is preferably contained in 5 to 15 parts by weight with respect to 100 parts by weight of the industrial by-products. Environmentally friendly construction materials satisfying the above-mentioned range can be implemented.
The additive contained in the composition for construction materials includes one selected from hydrated lime, quicklime, bentonite, haemulstone and mixtures thereof. The additive is preferably included in 1 to 10 parts by weight with respect to 100 parts by weight of industrial by-products.
The slaked lime serves to make the composition for civil engineering materials to be a hydraulic civil materials.
The quicklime acts as a hardener.
The bentonite is included in the composition for construction materials to control viscosity.
The crypts serve as tensile strength enhancers.
The mixing ratio and mixing method of the composition for construction materials and water is not particularly limited as long as it is a ratio used in the art. Due to the mixing, the properties of the industrial by-product are alleviated by the other components.
The method of manufacturing a construction material of the present invention includes the step of heating the mixture at 100 ~ 120 ℃. Due to the heating, bubbles can be formed in the construction material.
The method of manufacturing a civil engineering material of the present invention provides a method of manufacturing a civil engineering material, characterized in that it comprises the step of drying the heated mixture at 200 ~ 300 ℃. Due to the drying, excessive bubbles existing in the functional civil engineering material can be reduced to an appropriate amount.
In the present invention, the construction material is preferably cement mortar for construction materials. Civil engineering materials of the present invention can be used as bricks, river banks and the like.
The manufacturing method of the construction materials of the present invention is environmentally friendly because it can recycle industrial by-products. In addition, the method of manufacturing a construction material of the present invention can implement excellent strength and cohesion.
Hereinafter, the present invention will be described in more detail by way of Examples and Test Examples. However, the scope of the present invention is not limited by the following examples and test examples.
Example 1, Comparative Example 1 and Comparative Example 2: Preparation of Construction Materials
To the composition and composition for construction materials to the components and contents of Table 1 below. Water was mixed in a ratio of 1: 1 in the composition for construction materials, heated at 100 ° C. for 1 hour, and dried at 250 ° C. for 3 hours.
At this time, the chemical composition of vermiculite is shown in Table 2 below, and the chemical composition of pearlite is shown in Table 3 below. In addition, the chemical composition of the phosphate gypsum is shown in Table 4. The gypsum used in Comparative Example 2 was not a waste plaster but a new product.
(Phosphate gypsum)
(Parts by weight)
(Parts by weight)
(Parts by weight)
(Measurement temperature: 20.8 ℃)
(weight%)
(weight%)
Test Example: Evaluation of Characteristics of Construction Materials
Water was added to Example 1, Comparative Example 1 and Comparative Example 2, and then sufficiently blended in a blender, and then molded in a molding machine. This was cured in a curing room at a temperature of 90 ℃ and then dried naturally to form a brick.
Referring to Table 5, in Example 1 of the present invention, the compressive strength is excellent and the weight is low. On the other hand, Comparative Example 1, which does not include vermiculite and pearlite, has excellent compressive strength but heavy weight. In Comparative Example 2, gypsum, a new product, was used instead of waste gypsum, but has a strength and weight similar to those of Example 1. Therefore, it can be seen that the present invention can realize excellent properties in terms of physical properties as well as cost.
Claims (4)
Heating the mixture at 100-120 ° C .; And
Drying the heated mixture at 200 ~ 300 ℃,
The industrial by-products is a method of manufacturing a civil engineering material in the form of a powder obtained by drying and heat treatment at 150 ~ 1,000 ℃.
The composition for construction materials
With respect to 100 parts by weight of the industrial by-products,
20 to 40 parts by weight of the mineral;
5 to 15 parts by weight of the soil;
1 to 10 parts by weight of the bubble generator; And
The method of manufacturing a construction material, characterized in that it comprises 1 to 10 parts by weight of the additive.
The mineral is pulverized to a particle diameter of 1 ~ 5mm, and then rapidly heated at 700 ~ 1,200 ℃ and peeled and expanded 10 to 15 times, the manufacturing method of construction materials, characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100043717A KR101277589B1 (en) | 2010-05-11 | 2010-05-11 | method for preparing engineering and construction materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100043717A KR101277589B1 (en) | 2010-05-11 | 2010-05-11 | method for preparing engineering and construction materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20110124384A KR20110124384A (en) | 2011-11-17 |
| KR101277589B1 true KR101277589B1 (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20100043717A KR101277589B1 (en) | 2010-05-11 | 2010-05-11 | method for preparing engineering and construction materials |
Country Status (1)
| Country | Link |
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| KR (1) | KR101277589B1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040064242A (en) * | 2004-04-28 | 2004-07-16 | 하윤식 | Construction materials using industrial waste and their preparation method |
| KR100532540B1 (en) | 2003-06-05 | 2005-12-01 | 안기주 | Bubble concrete mortar composition and its manufacturing process |
| KR100541412B1 (en) | 2004-02-11 | 2006-01-11 | 주식회사 재원 | non-fire plate with expansive stone |
| KR20070108332A (en) * | 2007-09-11 | 2007-11-09 | 김동수 | Method for manufacturing bottom structure between floors of building using porous material for insulation and absorption of sound, method for manufacturing side wall structure of building using the same |
-
2010
- 2010-05-11 KR KR20100043717A patent/KR101277589B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100532540B1 (en) | 2003-06-05 | 2005-12-01 | 안기주 | Bubble concrete mortar composition and its manufacturing process |
| KR100541412B1 (en) | 2004-02-11 | 2006-01-11 | 주식회사 재원 | non-fire plate with expansive stone |
| KR20040064242A (en) * | 2004-04-28 | 2004-07-16 | 하윤식 | Construction materials using industrial waste and their preparation method |
| KR20070108332A (en) * | 2007-09-11 | 2007-11-09 | 김동수 | Method for manufacturing bottom structure between floors of building using porous material for insulation and absorption of sound, method for manufacturing side wall structure of building using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110124384A (en) | 2011-11-17 |
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