KR970008688B1 - Lightweight aggregate material and production thereof - Google Patents

Lightweight aggregate material and production thereof Download PDF

Info

Publication number
KR970008688B1
KR970008688B1 KR1019940029830A KR19940029830A KR970008688B1 KR 970008688 B1 KR970008688 B1 KR 970008688B1 KR 1019940029830 A KR1019940029830 A KR 1019940029830A KR 19940029830 A KR19940029830 A KR 19940029830A KR 970008688 B1 KR970008688 B1 KR 970008688B1
Authority
KR
South Korea
Prior art keywords
weight
parts
lightweight aggregate
fly ash
present
Prior art date
Application number
KR1019940029830A
Other languages
Korean (ko)
Other versions
KR960017564A (en
Inventor
이석주
Original Assignee
권현재
이석주
김선익
박광춘
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 권현재, 이석주, 김선익, 박광춘 filed Critical 권현재
Priority to KR1019940029830A priority Critical patent/KR970008688B1/en
Publication of KR960017564A publication Critical patent/KR960017564A/en
Application granted granted Critical
Publication of KR970008688B1 publication Critical patent/KR970008688B1/en

Links

Classifications

    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/027—Lightweight materials
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/045—Alkali-metal containing silicates, e.g. petalite
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/10—Acids or salts thereof containing carbon in the anion
    • 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • 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

Abstract

The present invention relates to a lightweight aggregate which is excellent in cracking resistance. The lightweight aggregate comprises 50% diluted sodium silicate 5-30 parts by weight, boric acid 10-20 parts by weight, soda ash 2-15 parts by weight and fly ash 100 parts by weight.

Description

경량골재 및 그 제조방법Light weight aggregate and its manufacturing method

본 발명은 경량골재 및 그 제조방법에 관한 것으로, 보다 상세하게로는 플라이 애쉬를 주원료로 하고 규산나트륨과 칼라장석 그리고 소다회를 부원료로 하는 경량골재 및 그 제조방법에 관한 것이다.The present invention relates to a lightweight aggregate and a method for manufacturing the same, and more particularly, to a lightweight aggregate using a fly ash as a main raw material and sodium silicate, color feldspar and soda ash as a secondary raw material and a method for manufacturing the same.

플라이 애쉬를 주원료로 한 경량골재와 관한 기술은 그 동안 여러가지가 공개된 바 있으며, 그 대표적인 것으로는 소석회, 생석회, 무수석고 등을 바인더로 하여 경화시키는 방법과 시멘트를 첨가하여 경화시키는 방법을 들 수 있다.Various techniques related to light aggregates based on fly ash have been published. The representative examples thereof include hardening lime, quicklime and anhydrous gypsum as binders and adding cement to harden them. have.

그러나 전자의 방법은 얻어진 제법의 강도가 부족하며 특히 흡습성이 지나치게 높다는 문제점이 있으며, 후자의 방법은 얻어진 제품의 강도, 흡습성 등에 있어서는 만족할 수 있으나 시멘트의 자연 고화성질로 인하여 작업성이 크게 불량한 문제점이 있다. 또한 두 가지 방법 모두 고온소성시이 균열이 발생하게 되며, 얻어진 제품이 비교적 비중이 높다는 문제점이 있다.However, the former method has a problem in that the strength of the obtained manufacturing method is insufficient and the hygroscopicity is particularly high. The latter method is satisfactory in the strength, hygroscopicity, etc. of the obtained product, but the workability is greatly poor due to the natural solidification of the cement. have. In addition, in both methods, this cracking occurs at high temperature firing, and there is a problem in that the obtained product has a relatively high specific gravity.

본 발명은 상기한 바와 같은 문제점을 해결하기 위한 것으로, 제조공정이 간단할 뿐만 아니라 제품의 물성 중 경량성과 내크랙성이 향상되고 흡수율이 감소된 경량골재를 제공하는 것을 목적으로 한다.The present invention is to solve the problems as described above, it is an object of the present invention to provide a lightweight aggregate that is not only simple manufacturing process but also light weight and crack resistance of the physical properties of the product is reduced and the absorption rate is reduced.

본 발명자는 상기 목적을 달성하기 위하여 연구한 결과, 플라이 애쉬를 주원료로 하되 규산나트륨과 칼리장석 그리고 소다회를 부원료로 사용하게 되면 경량성과 내크랙성이 향상된 경량골재가 얻어짐을 밝혀내게 되었다.The present inventors have studied to achieve the above object, it was found that the use of fly ash as the main raw material but sodium silicate, calistone and soda ash as a secondary raw material to obtain a lightweight aggregate with improved light weight and crack resistance.

즉, 본 발명의 경량골재는 플라이 애쉬 100중량부에 규산나트륨(물에 50% 희석된 것을 기준) 5-30중량부, 칼리장석 10-20중량부, 소다회 2-15중량부를 첨가하는 것을 특징으로 하며, 본 발명의 제조방법은 상기 조성을 혼합하여 성형한 후, 750-1,050℃의 온도에서 15-60분간 소성하는 것을 특징으로 한다.That is, the lightweight aggregate of the present invention is characterized in that 5 to 30 parts by weight of sodium silicate (based on 50% dilution in water), 10 to 20 parts by weight of califeld, and 2 to 15 parts by weight of soda ash to 100 parts by weight of fly ash. In the manufacturing method of the present invention, the composition is mixed and molded, and then calcined at a temperature of 750-1,050 ° C for 15-60 minutes.

이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.

본 발명에서 사용될 수 있는 플라이 애쉬는 국내에서 발생하는 것이라면 모두 사용이 가능하다. 다만, 사용 전 흡습을 한 경우에는 이를 충분히 건조시켜서 사용하는 것이 바람직하다.Fly ash that can be used in the present invention can be used as long as it occurs in Korea. However, when the moisture is absorbed before use, it is preferable to dry it sufficiently.

본 발명에서 사용될 수 있는 규산나트륨을 어느 것이든 사용 가능하나 보다 바람직한 것으로는 3호 규산나트륨이며, 이를 물과 약 5 : 5로 혼합하여 사용하는 것이 바람직하다. 규산나트륨은 플라이 애쉬에 성형성을 부여함과 아울러 플라이 애쉬 입자를 결합시키는 결합제의 역할을 한다. 그 적절한 사용량은 플라이 애쉬 100중량부에 대하여 물에 50% 희석된 것을 기준으로 5-30중량부이다. 이 이하 사용할 경우에는 성형이 어려우며, 이 이상 사용할 경우에는 제조단가가 지나치게 상승하는 문제점이 있다.Sodium silicate which can be used in the present invention can be used in any one, but more preferred is sodium 3 sodium silicate, it is preferable to use a mixture of about 5: 5 with water. Sodium silicate not only imparts moldability to the fly ash, but also acts as a binder to bind the fly ash particles. Suitable amounts are 5-30 parts by weight based on 50% dilution in water relative to 100 parts by weight of fly ash. In the case of using less than this, molding is difficult, and in the case of using more than this, the manufacturing cost increases excessively.

본 발명에서 사용되는 칼리장석은 제품의 크랙발생을 방지하는 역할과 강도를 증진시키는 역할을 한다. 그 적절한 사용량은 플라이 애쉬 100중량부에 대하여 10-20중량부이다. 이 이하 사용할 경우에는 최종제품의 강도가 부족하며, 또한 크랙이 발생하게 되는 문제점이 있으며, 이 이상 사용할 경우에는 물성향상 효과는 동일하나 제조원가가 상승된다.Kalijangite used in the present invention serves to prevent cracking of the product and to enhance the strength. Suitable amounts thereof are 10-20 parts by weight based on 100 parts by weight of the fly ash. In the case of using less than this, there is a problem that the strength of the final product is insufficient and cracks are generated, and when used more than this, the effect of improving physical properties is the same, but the manufacturing cost is increased.

본 발명에 사용되는 소다회는 최종 제품의 내크랙성을 향상시키고 특히 일반적인 고온 소성물에 자주 발생하는 휨 현상을 방지하는 역할을 하게 된다. 그 적절한 사용량은 2-15중량부로, 이 이상 사용할 경우에는 최종 제품의 물성에 나쁜 영상을 미칠 수 있다.Soda ash used in the present invention serves to improve the crack resistance of the final product and to prevent warpage, which often occurs in general high temperature fired products. The proper amount of use is 2-15 parts by weight, and when used more than this, it may have a bad image on the properties of the final product.

이 외에 강도증진과 소성온도를 낮추기 위해서는 붕산을 플라이 애쉬 100중량부에 대하여 10중량부이내에 사용할 수 있으며, 경량성을 부여하기 위하여는 발포제로 탄산칼슘을 플라이 애쉬 100중량부에 대하여 10중량부 이내 사용할 수 있다.In addition, boron acid can be used within 10 parts by weight with respect to 100 parts by weight of the fly ash to increase strength and lower the firing temperature.In order to impart lightness, calcium carbonate can be used within 10 parts by weight with respect to 100 parts by weight of the fly ash. Can be used.

상기와 같은 조성을 균일하게 혼합한 다음, 형틀에 투입하고 성형하여 고온로에서 소성하게 되면 본 발명의 경량 골재가 얻어지게 된다. 그 성형 압력은 제한이 없으나 40kg/cm2정도가 적절하며, 소성온도는 750-1,050℃, 보다 바람직하게로는 850-900℃가 적절하고, 소성 시간은 최종 제품의 사용 용도에 따라 변화되나 15-60분 정도가 적절하다.After uniformly mixing the composition as described above, and put into the mold and molded to be baked in a high temperature furnace to obtain a lightweight aggregate of the present invention. The molding pressure is not limited, but 40kg / cm 2 is appropriate, and the firing temperature is 750-1,050 ° C, more preferably 850-900 ° C, and the firing time varies depending on the intended use of the final product. -60 minutes is appropriate.

이와 같은 공정을 거쳐서 얻어진 소성물은 비중 0.9-1.2, 압축강도 190-220, 흡수를 3% 이내 정도의 물성을 지니게 되므로 범용 건축자재는 물론, 경량성과 내화성이 요구되는 특수 분야에 적용이 가능하다.The fired product obtained through such a process has specific gravity 0.9-1.2, compressive strength 190-220, and absorption within 3%, so it can be applied to general construction materials and special fields requiring light weight and fire resistance. .

본 발명의 실시예는 다음과 같다.Embodiments of the present invention are as follows.

[실시예 1-4) 및 비교예 1-2)][Example 1-4) and Comparative Example 1-2)]

건조시킨 플라이 애쉬 2000g에 3호 규산나트륨 50% 희석용액 200g, 칼리장석 300g, 소다회 200g을 첨가하고 균일하게 혼합한 다음, 직경 2cm의 구형틀에 투입하고 성형압력 40kg/cm2의 압력으로 성형한 후 로타리 킬른에서 600-1100℃의 온도에서 각각 30분간 소성시킨 다음 서냉시켜 제조한 시편의 물성 평가결과는 아래의 표 1과 같다.No. 3 sodium silicate and 50% dilution to the dried fly ash 2000g solution 200g, potassium feldspar 300g, by the addition of soda ash, 200g, and uniformly mixed, and then, the input to the rectangular frame with a diameter of 2cm, and molded into a molding pressure of a pressure of 40kg / cm 2 After the baking for 30 minutes at a temperature of 600-1100 ° C in a rotary kiln, the physical properties of the specimen prepared by slow cooling are shown in Table 1 below.

[표 1]TABLE 1

[비교예 3]Comparative Example 3

실시예 3과 동일하게 시행하되, 칼리장석을 첨가하지 아니하였다. 그 결과 얻어진 시편의 압축강도는 110kg/cm2으로 불량하였다.The same procedure as in Example 3 was carried out without the addition of callirite. The resulting compressive strength of the specimen was poor at 110 kg / cm 2 .

[비교예 4][Comparative Example 4]

실시예 3과 동일하게 시행하되, 소다회를 첨가하지 아니하였다. 그 결과 얻어진 시편의 압축강도는 160kg/cm2으로 불량하였으며, 특히 시편에 휨 현상이 발생하였다.The same procedure as in Example 3 was carried out, but no soda ash was added. As a result, the compressive strength of the obtained specimen was poor at 160 kg / cm 2 , and in particular, a warpage phenomenon occurred in the specimen.

[실시예 5]Example 5

실시예 3과 동일하게 시행하되, 탄산칼슘을 100g 더욱 더 첨가하였다. 그 결과 얻어진 시편의 압축강도는 200kg/cm2으로 큰 변화가 없었으며, 비중은 0.75으로 현저히 감소하였다.In the same manner as in Example 3, 100 g of calcium carbonate was further added. As a result, the compressive strength of the obtained specimens was not significantly changed to 200 kg / cm 2 , and the specific gravity decreased to 0.75.

[실시예 6]Example 6

실시예 3과 동일하게 시행하되, 붕산을 200g 더욱 더 첨가하였다. 그 결과 얻어진 시편의 압축강도는 240kg/cm2으로 향상되었으며, 비중은 1.1로 약간 상승하였다.The same procedure as in Example 3 was carried out, but 200 g of boric acid was further added. As a result, the compressive strength of the specimens was improved to 240kg / cm 2 , specific gravity was slightly increased to 1.1.

Claims (4)

플라이 애쉬 100중량부에 대하여 50% 희석된 규산나트륨 5-30중량부, 칼리장석 10-20중량부, 소다회 2-15중량부가 첨가되는 것을 특징으로 하는 경량골재.Light weight aggregate, characterized in that 5-30 parts by weight of sodium silicate diluted by 50% with respect to 100 parts by weight of the fly ash, 10-20 parts by weight of calyxite, 2-15 parts by weight of soda ash is added. 제1항에 있어서, 탄산칼슘이 10중량부 이내 더욱 더 첨가되는 것을 특징으로 하는 경량골재.The lightweight aggregate according to claim 1, wherein calcium carbonate is further added within 10 parts by weight. 제1항에 있어서, 붕산이 10중량부 이내 더욱 더 첨가되는 것을 특징으로 하는 경량골재.The lightweight aggregate according to claim 1, wherein boric acid is further added within 10 parts by weight. 제1항 내지 제3항 기재의 조성물을 균일하게 혼합하여 성형한 후, 750-1,050℃의 온도에서 15-60분간 소성하는 것을 특징으로 하는 경량골재의 제조방법.After the composition of claim 1 to 3 uniformly mixed and molded, the method for producing a lightweight aggregate, which is baked for 15-60 minutes at a temperature of 750-1,050 ℃.
KR1019940029830A 1994-11-14 1994-11-14 Lightweight aggregate material and production thereof KR970008688B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940029830A KR970008688B1 (en) 1994-11-14 1994-11-14 Lightweight aggregate material and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940029830A KR970008688B1 (en) 1994-11-14 1994-11-14 Lightweight aggregate material and production thereof

Publications (2)

Publication Number Publication Date
KR960017564A KR960017564A (en) 1996-06-17
KR970008688B1 true KR970008688B1 (en) 1997-05-28

Family

ID=19397866

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940029830A KR970008688B1 (en) 1994-11-14 1994-11-14 Lightweight aggregate material and production thereof

Country Status (1)

Country Link
KR (1) KR970008688B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101646155B1 (en) * 2015-12-23 2016-08-08 그렉 조 Fly ash composition for preparing a light-weight molded foam article and method for producing a light-weight molded foam article using them and a light-weight molded foam article made thereby

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432775B1 (en) * 2001-08-04 2004-05-24 한국지질자원연구원 Compositions and manufacturing of low temperature calcined brick

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101646155B1 (en) * 2015-12-23 2016-08-08 그렉 조 Fly ash composition for preparing a light-weight molded foam article and method for producing a light-weight molded foam article using them and a light-weight molded foam article made thereby

Also Published As

Publication number Publication date
KR960017564A (en) 1996-06-17

Similar Documents

Publication Publication Date Title
US4824811A (en) Lightweight ceramic material for building purposes, process for the production thereof and the use thereof
US3957522A (en) Process for preparing fire-resisting moldings
CN111217566A (en) Method for preparing high-temperature-resistant concrete building block by using carbon dioxide
US4221598A (en) Process for the production of steam-hardened gas concrete
KR970008688B1 (en) Lightweight aggregate material and production thereof
US1635212A (en) Lime-sludge product and process of making the same
CN112125620B (en) Aerated concrete block with sanding powder as raw material and preparation method thereof
US2516893A (en) Refractory concrete
RU2536693C2 (en) Crude mixture for producing non-autoclaved aerated concrete and method of producing non-autoclaved aerated concrete
KR930005252B1 (en) High-strength ceramic materials and methods for making same
SU1468882A1 (en) Charge for production of construction articles
RU2201904C2 (en) Raw mixture and method for building article making
SU1680677A1 (en) Method for manufacturing articles of heat-resistant concrete
RU87162U1 (en) BUILDING CERAMIC PRODUCT
RU2703061C1 (en) Mixture for production of silicate brick
KR850001106B1 (en) Manufacturing method for briquet ash brick
SU382594A1 (en) CHARGE FOR PRODUCTION OF DYNASY PRODUCTS
SU852832A1 (en) Raw mixture for making light weight filler
SU1058932A1 (en) Ceramic composition
SU691431A1 (en) Raw mixture for producing building fibrous articles
JP2892096B2 (en) Manufacturing method of building materials
SU1008203A1 (en) Raw mix for making heat insulating products
JPS5836965A (en) Improved lightweight aggregate and manufacture
RU2051880C1 (en) Source mix for production of building brick
RU2095329C1 (en) Wall ceramic products and method of manufacture thereof from sand-clay mixes

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20020528

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee