KR101028011B1 - Noncement concrete manufacturing method using fire furnace slag - Google Patents

Noncement concrete manufacturing method using fire furnace slag Download PDF

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KR101028011B1
KR101028011B1 KR20100090257A KR20100090257A KR101028011B1 KR 101028011 B1 KR101028011 B1 KR 101028011B1 KR 20100090257 A KR20100090257 A KR 20100090257A KR 20100090257 A KR20100090257 A KR 20100090257A KR 101028011 B1 KR101028011 B1 KR 101028011B1
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weight
parts
furnace slag
blast furnace
mixing
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정연문
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(주) 삼전건설
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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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C04B28/105—Magnesium oxide or magnesium carbonate cements
    • 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)

Abstract

PURPOSE: A method for manufacturing cement-free concrete using blast furnace slag is provided to improve the combination density of aggregate and blast furnace slag by adding the optimal amount of a magnesium oxide. CONSTITUTION: A method for manufacturing cement-free concrete using blast furnace slag includes the following: water and an alkaline inorganic material are mixed into the weight ration of 1.5:1 to form a binder(10). 30 to 60 parts by weight of aggregate is mixed with the 100 parts by weight of the blast furnace slag to form a raw material(20). 50 to 80 parts by weight of the raw material and 20 to 50 parts by weight of water are mixed(30). 30 to 40 parts by weight of the binder and 100 parts by weight of water are mixed. 8 to 12 parts by weight of a magnesium oxide is additionally mixed. The mixture is cured.

Description

고로슬래그를 이용한 무시멘트 콘크리트 제조방법{NONCEMENT CONCRETE MANUFACTURING METHOD USING FIRE FURNACE SLAG}Noncement concrete manufacturing method using blast furnace slag {NONCEMENT CONCRETE MANUFACTURING METHOD USING FIRE FURNACE SLAG}

본 발명은 고로슬래그를 이용한 무시멘트 콘크리트 제조방법에 관한 것으로, 더욱 상세하게는 시멘트 대신에 고로슬래그를 사용하여 콘크리트를 제조하되, 작업성이 용이하고, 충분한 강도를 나타낼 수 있도록 한 고로슬래그를 이용한 무시멘트 콘크리트 제조방법에 관한 것이다.The present invention relates to a method of manufacturing cement cement concrete using blast furnace slag, and more specifically, to produce concrete using blast furnace slag instead of cement, using blast furnace slag to facilitate workability and exhibit sufficient strength. It relates to a cementless concrete manufacturing method.

일반적으로 건설 사업에 사용되는 모르터 및 콘크리트는 결합재, 물 및 골재로 구성되는데 이때 사용되는 결합재로는 시멘트가 주로 사용된다.In general, mortar and concrete used in the construction business is composed of a binder, water and aggregate, the cement is mainly used as a binder.

상기 시멘트는 주성분이 실리카, 알루미나 및 석회를 일정한 비율로 혼합하여 그 일부가 용융되어 소결된 클링커에 적당량의 석고를 첨가하여 응고시켜 분쇄한 후 분말로 만든 것으로, 상기 시멘트의 클링커를 제조하기 위해서 1450℃의 고온상태에서 용융시키기 때문에 에너지 소모가 많다. The cement is made of powder after the main component is mixed with silica, alumina, and lime in a constant ratio, a part of which is melted, solidified by adding an appropriate amount of gypsum to the sintered clinker, and then pulverized. Energy is consumed because it melts at high temperature of ℃.

또한, 시멘트 2톤을 제조하는데 사용되는 석회석과 규산의 화학반응 시에 약 700 ~ 870Kg의 이산화탄소를 배출하는 것으로 알려져 있다.In addition, it is known to emit about 700 ~ 870Kg of carbon dioxide during the chemical reaction of limestone and silicic acid used to produce two tons of cement.

상기와 같이 시멘트의 제조공정시 과다한 이산화탄소가 발생함에도 불구하고, 작업성과 강고의 특성이 좋아서 전 세계적으로 그 수요는 계속 늘어가고 있다. In spite of the excessive carbon dioxide generated in the cement manufacturing process as described above, the demand for work is increasing all over the world because of its good workability and strength.

최근에는 지구온난화의 원인이 되는 이산화탄소의 배출량을 줄이는 노력을 하고 있고, 이러한 경향에 발맞추어 시멘트를 사용하지 않는 즉 무시멘트로 콘크리트를 형성하는 기술들이 개발되어 있다. Recently, efforts have been made to reduce the amount of carbon dioxide that causes global warming, and in accordance with this trend, technologies have been developed that use concrete to form cement without cement.

상기 종래의 무시멘트 콘크리트 제조방법에 관한 기술은 대한민국 특허청 등록특허공보 제908499호, 제942032호 또는 공개특허공보 제23453호 등에 개시된 바 있다.The conventional technology for manufacturing cementless concrete has been disclosed in Korean Patent Office Publication No. 908499, 942032, or 23453.

그러나, 종래의 무시멘트 콘크리트의 제조방법은 다음과 같은 문제점이 있었다. However, the conventional manufacturing method of cementless concrete had the following problems.

(1) 결합재의 투입시 화학반응이 심하게 일어나서 열이 많이 발생한다. (1) When the binder is added, a lot of heat occurs due to severe chemical reaction.

(2) 시멘트를 사용할 때 보다 빠르게 굳어서 작업성이 떨어진다. (2) It hardens faster when using cement, resulting in poor workability.

(3) 골재와 결합재의 결합력이 떨어져서 강도가 매우 약하다.(3) The strength of the aggregate is very weak due to the lack of bonding strength between aggregate and binder.

상기한 문제점을 극복하기 위해서, 본 발명은 물과 알칼리성 무기질재료의 중량비율을 1.5:1로 하여 결합재를 형성하는 결합재 형성단계와;In order to overcome the above problems, the present invention provides a binder forming step of forming a binder with a weight ratio of water and an alkaline inorganic material to 1.5: 1;

고로슬래그 100 중량부 당 골재 30~60중량부를 혼합하여 원재료를 형성하는 원재료 형성단계와; Raw material forming step of forming a raw material by mixing 30 to 60 parts by weight of aggregate per 100 parts by weight of blast furnace slag;

상기 원재료 50~80중량부와 물 20~50중량부를 혼합하되, 물 100중량부 당 결합재를 30~40중량부를 혼합하고, 산화마그네슘을 8~12중량부을 함께 혼합하는 혼합단계와; Mixing 50 to 80 parts by weight of the raw materials and 20 to 50 parts by weight of water, mixing 30 to 40 parts by weight of a binder per 100 parts by weight of water, and mixing 8 to 12 parts by weight of magnesium oxide together;

상기 혼합단계 후에 타설을 하고 양생하는 완성단계로 구성되는 것을 특징으로 한다.After the mixing step is characterized by consisting of a complete step of pouring and curing.

본 발명의 고로슬래그를 이용한 무시멘트 콘크리트 제조방법에 의하면 다음과 같은 효과가 발생한다.According to the cement concrete manufacturing method using the blast furnace slag of the present invention the following effects occur.

(1) 산화마그네슘에 인해서 반응 속도가 조절되므로 심한 열의 발생을 억제한다.(1) The reaction rate is controlled by magnesium oxide, which suppresses the generation of severe heat.

(2) 반응속도를 조절할 수 있으므로, 작업성이 뛰어나다.(2) The reaction speed can be adjusted, so workability is excellent.

(3) 반응속도를 늦추어 줌으로써 골재와 고로슬래그의 결합을 더욱 치밀하게 할 수 있어서 강도가 크게 나타난다.(3) By slowing down the reaction speed, the combination of aggregate and blast furnace slag can be made more dense, resulting in greater strength.

도 1은 본 발명의 바람직한 실시예로 형성된 고로슬래그를 이용한 무시멘트 콘크리트 제조방법의 순서도.1 is a flow chart of a cement concrete manufacturing method using the blast furnace slag formed by a preferred embodiment of the present invention.

본 발명은 물과 알칼리성 무기질재료의 중량비율을 1.5:1로 하여 결합재를 형성하는 결합재 형성단계(10)와;The present invention provides a binder forming step (10) for forming a binder with a weight ratio of water and the alkaline inorganic material to 1.5: 1;

고로슬래그 100 중량부 당 골재 30~60중량부를 혼합하여 원재료를 형성하는 원재료 형성단계(20)와; Raw material forming step 20 of forming a raw material by mixing 30 to 60 parts by weight of aggregate per 100 parts by weight of blast furnace slag;

상기 원재료 50~80중량부와 물 20~50중량부를 혼합하되, 상기 물에는 물 100중량부 당 결합재를 30~40중량부를 혼합하고, 산화마그네슘을 8~12중량부을 함께 혼합하는 혼합단계(30)와; Mixing 50 to 80 parts by weight of the raw materials and 20 to 50 parts by weight of water, 30 to 40 parts by weight of the binder per 100 parts by weight of water, the mixing step of mixing together 8 to 12 parts by weight of magnesium oxide )Wow;

상기 혼합단계(30) 후에 타설을 하고 양생하는 완성단계(40)로 구성된다.
After the mixing step 30 consists of the completion step 40 of pouring and curing.

상기 결합재는 알칼리성 무기질재료를 물에 녹여서 수산화기로 형성하는 것으로, 산화칼슘, 산화화칼륨, 산화나트륨 등의 알칼리성 재료를 사용한다. The binder is formed by dissolving an alkaline inorganic material in water to form a hydroxyl group, and an alkaline material such as calcium oxide, potassium oxide, sodium oxide or the like is used.

상기 산화칼륨은 반응속도가 빠르고 열이 많이 발생하므로, 본 발명에서는 산화나트륨 또는 산화칼슘을 사용하는 것이 바람직하다. Since potassium oxide has a high reaction rate and generates a lot of heat, it is preferable to use sodium oxide or calcium oxide in the present invention.

상기 원재료는 고로슬래그와 골재로 구성되는데, 상기 고로슬래그는 상기 고로슬래그는 분말도가 3000~5000㎠/g인 것을 사용하는 것이 적당하다.The raw material is composed of blast furnace slag and aggregate, the blast furnace slag is suitable to use the blast furnace slag powder degree 3000 ~ 5000 ㎠ / g.

상기 골재는 평균입경이 25mm 이하인 자갈과 평균입경이 2mm이하의 모래로 구성되도록 형성되는 것이 적당하고, 종래의 자갈과 모래의 비율과 동일하게 40~70 중량부 : 30~60 중량부로 구성된다.The aggregate is appropriately formed to be composed of gravel having an average particle diameter of 25 mm or less and sand having an average particle diameter of 2 mm or less, and 40 to 70 parts by weight: 30 to 60 parts by weight, in the same manner as the ratio of conventional gravel and sand.

상기 원재료에는 고로슬래그와 플라이애쉬를 섞어서 사용할 수 있는데, 고로슬래그의 중량에 30~40중량부를 사용하는 것이 적당하다.The raw material may be used by mixing the blast furnace slag and fly ash, it is suitable to use 30 to 40 parts by weight of the blast furnace slag.

상기 플라이애쉬의 양은 플라이애쉬의 양이 많아지면 반응이 잘 일어나지 않아서 응고가 되지 않거나, 반응이 지나치게 늦어지게 되므로, 고로슬래그의 중량에 30~40중량부가 적당하다.Since the amount of the fly ash is large, the amount of the fly ash does not react well so that the reaction does not solidify, or the reaction is too late, so 30 to 40 parts by weight is appropriate for the weight of the blast furnace slag.

상기 산화마그네슘은 혼합단계에서 혼합하는데, 반응 속도를 결정하는 것으로, 8중량부이하로 형성하면 반응속도에 영향을 거의 미치지 않게 되고, 12중량부이상이 투여되면 반응이 지나치게 늦게 형성되어 오히려 균열이 발생한다.The magnesium oxide is mixed in the mixing step, to determine the reaction rate, if formed below 8 parts by weight has little effect on the reaction rate, when more than 12 parts by weight of the reaction is formed too late to crack rather Occurs.

만약, 플라이애쉬를 사용할 경우에는 산화마그네슘의 양을 최소한으로 줄여서 사용하는 것이 적당하다.
If fly ash is used, it is appropriate to reduce the amount of magnesium oxide to a minimum.

이하, 본 발명의 바람직한 실시예로 형성된 고로슬래그를 이용한 무시멘트 콘크리트 제조방법으로 콘크리트를 타설하는 과정을 설명하면 다음과 같다. Hereinafter, a process of pouring concrete in the cementless concrete manufacturing method using the blast furnace slag formed according to a preferred embodiment of the present invention.

알칼리성 무기질재료 중에 선택하여 물과 1.5:1의 비율로 섞어서 결합재를 형성한다.It is selected among alkaline inorganic materials and mixed with water at a ratio of 1.5: 1 to form a binder.

상기와 같이 결합재를 형성함과 동시에 고로슬래그와 골재를 마른상태에서 혼합하여 원재료를 형성하는데, 상기 골재와 고로슬래그가 골고루 섞일 수 있도록 형성하고, 거의 같은 중량비로 형성하는 것이 적당하다.At the same time as forming the binder and blast furnace slag and aggregate in a dry state to form a raw material, the aggregate and the blast furnace slag is formed to be evenly mixed, it is suitable to form in the same weight ratio.

상기 골재를 사용할 때 평균직경 5mm이하의 모래를 많이 사용하는 것이 강도를 높이는데 유리하다.When the aggregate is used, it is advantageous to increase the strength by using a lot of sand having an average diameter of 5 mm or less.

상기 원재료와 물을 혼합할 때 물에 결합재를 미리 섞어서 사용하고, 이때 산화마그네슘을 투입하여 혼합한다. When the raw material and water are mixed, the binder is mixed with water in advance, and at this time, magnesium oxide is added and mixed.

상기와 같이 원재료와 물을 혼합한 상태에서 콘크리트타설장소에 시공하는 것으로 완성된다.
As described above, the construction is completed in the concrete pouring place in the state of mixing the raw materials and water.

(1) 압축강도실험(7일강도)(1) Compressive strength test (7 days strength)

고로슬래그 100중량부당 골재를 80중량부, 결합재를 포함한 물 90중량부 및 결합재에 산화마그네슘을 각각 8중량부, 10중량부, 12중량부를 사용하여 콘크리트를 형성하고 7일간 양생한 후에 압축강도를 실험하였다.  80 parts by weight of aggregates per 100 parts by weight of blast furnace slag, 90 parts by weight of water including binder and 8 parts by weight, 10 parts by weight and 12 parts by weight of magnesium oxide were respectively used to form concrete and cured for 7 days. Experiment.


산화마그네슘양
(중량부)
Magnesium Oxide
(Parts by weight)
8
8

10
10
12
12
압축강도(kgf/㎠)
Compressive strength (kgf / ㎠)
210
210
224
224

218
218

표 1과 같이 압축강도가 200kgf/㎠ 이상 형성되는 것은 일반 콘크리트 구조물에는 적용가능한 충분한 압축강도이고, 산화마그네슘을 사용하지 않을 경우에는 압축강도가 150kgf/㎠ 을 넘지 못하는 것에 비하여 현저히 상승한 압축강도를 보인다.
As shown in Table 1, the compressive strength of 200kgf / ㎠ or more is sufficient compressive strength that can be applied to general concrete structures, and when magnesium oxide is not used, the compressive strength is markedly increased compared with the compressive strength that does not exceed 150kgf / ㎠. .

(2) 반응속도실험(2) Reaction speed test

(1)과 같은 조건에서 직경 100mm, 높이 200mm의 원주형태의 콘크리트 시편을 형성할 수 있는 거푸집을 만들고, 각각의 산화마그네슘의 양에 따른 표면응고속도를 육안으로 측정하였다.   Formed to form cylindrical concrete specimens of diameter 100mm and height 200mm under the same conditions as in (1), a surface solidification rate was measured visually according to the amount of magnesium oxide.

대조군으로는 산화마그네슘을 투여하지 않고, 동일한 형태로 형성한 것을 사용하였다. As a control, one formed in the same form without administration of magnesium oxide was used.

상기 반응시간을 육안으로 측정한 결과 산화마그네슘을 투여하지 않았을 경우에는 뜨거운 상태로 매우 빨리 반응하는 것을 확인할 수 있었으나, 산화마그네슘을 투여할 경우에는 반응이 안정적으로 되어서 적절한 반응온도에서 반응하는 것을 확인할 수 있었다.As a result of visually measuring the reaction time, when magnesium oxide was not administered, it was confirmed that the reaction was performed very quickly in a hot state. However, when magnesium oxide was administered, the reaction became stable and the reaction was carried out at an appropriate reaction temperature. there was.

상기한 것과 같이 본 발명은 충분한 압축강도를 나타내면서 반응속도를 조절할 수 있으므로 작업성이 뛰어난 등의 효과가 발생한다.
As described above, the present invention can control the reaction rate while exhibiting sufficient compressive strength, thereby producing an effect such as excellent workability.

본 발명은 첨부된 도면을 참조하여 바람직한 실시예를 중심으로 기술되었지만, 당업자라면 이러한 기재로부터 후술하는 특허청구범위에 의해 포괄되는 본 발명의 범주를 벗어남이 없이 다양한 변형이 가능하다는 것은 명백하다.While the invention has been described with reference to the accompanying drawings, preferred embodiments of the invention, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the invention covered by the following claims.

Claims (4)

물과 알칼리성 무기질재료의 중량비율을 1.5:1로 하여 결합재를 형성하는 결합재형성단계와;
고로슬래그 100 중량부 당 골재 30~60중량부를 혼합하여 원재료를 형성하는 원재료형성단계와;
상기 원재료 50~80중량부와 물 20~50중량부를 혼합하되, 물 100중량부 당 결합재를 30~40중량부를 혼합하고, 산화마그네슘을 8~12중량부을 함께 혼합하는 혼합단계와;
상기 혼합단계 후에 타설을 하고 양생하는 완성단계로 구성하는 구성되는 것을 특징으로 하는 고로슬래그를 이용한 무시멘트 콘크리트 제조방법.A binder forming step of forming a binder by setting a weight ratio of water and an alkaline inorganic material to 1.5: 1;
Raw material forming step of forming a raw material by mixing 30 ~ 60 parts by weight of aggregate per 100 parts by weight of blast furnace slag;
Mixing 50 to 80 parts by weight of the raw materials and 20 to 50 parts by weight of water, mixing 30 to 40 parts by weight of a binder per 100 parts by weight of water, and mixing 8 to 12 parts by weight of magnesium oxide together;
Cemented concrete manufacturing method using the blast furnace slag, characterized in that consisting of the completion step of pouring and curing after the mixing step. 제 1항에 있어서,
상기 원재료의 고로슬래그는 플라이애쉬와 혼합하여 사용하는 것을 특징으로 하는 고로슬래그를 이용한 무시멘트 콘크리트 제조방법.The method of claim 1,
Blast furnace slag of the raw material is concrete cement manufacturing method using the blast furnace slag, characterized in that used in combination with the fly ash. 제 2항에 있어서,
상기 고로슬래그와 플라이애쉬의 혼합비율은 고로슬래그의 중량에 30~40중량부로 형성되는 것을 특징으로 하는 고로슬래그를 이용한 무시멘트 콘크리트 제조방법.The method of claim 2,
The mixing ratio of the blast furnace slag and fly ash is concrete cement manufacturing method using the blast furnace slag, characterized in that formed in 30 to 40 parts by weight to the weight of the blast furnace slag. 제1항의 방법으로 형성되는 무시멘트 콘크리트 조성물.Cementum concrete composition formed by the method of claim 1.
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KR101247608B1 (en) 2011-09-07 2013-04-02 (주) 삼전건설 Nocement concrete breast block using furnace slag for reinforcement soil
KR101388002B1 (en) 2012-07-10 2014-04-22 한일시멘트(주) The composite of non-cement based on blast furnace slag and fly ash, manufacturing method of dry mortar using the it
CN104177033A (en) * 2013-05-23 2014-12-03 深圳市科耐乐新材料有限公司 Manufacturing method for ultrafine powder enhanced composite board
KR102481660B1 (en) * 2022-11-08 2022-12-26 전북대학교산학협력단 A magnesium-based cement compsition and a magnesium-based cement using the same

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KR100415006B1 (en) 2003-09-08 2004-01-13 지오콘머테리얼 주식회사 Cement replacement agent
KR100741637B1 (en) 2006-12-01 2007-07-20 최경득 The environmental related reinforcing block using non-cement materials
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Publication number Priority date Publication date Assignee Title
KR101247608B1 (en) 2011-09-07 2013-04-02 (주) 삼전건설 Nocement concrete breast block using furnace slag for reinforcement soil
KR101388002B1 (en) 2012-07-10 2014-04-22 한일시멘트(주) The composite of non-cement based on blast furnace slag and fly ash, manufacturing method of dry mortar using the it
CN104177033A (en) * 2013-05-23 2014-12-03 深圳市科耐乐新材料有限公司 Manufacturing method for ultrafine powder enhanced composite board
KR102481660B1 (en) * 2022-11-08 2022-12-26 전북대학교산학협력단 A magnesium-based cement compsition and a magnesium-based cement using the same
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