KR102474880B1 - Concrete composition having coffee carbonized ash - Google Patents
Concrete composition having coffee carbonized ash Download PDFInfo
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- KR102474880B1 KR102474880B1 KR1020210140772A KR20210140772A KR102474880B1 KR 102474880 B1 KR102474880 B1 KR 102474880B1 KR 1020210140772 A KR1020210140772 A KR 1020210140772A KR 20210140772 A KR20210140772 A KR 20210140772A KR 102474880 B1 KR102474880 B1 KR 102474880B1
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- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 235000007237 Aegopodium podagraria Nutrition 0.000 claims abstract description 51
- 244000045410 Aegopodium podagraria Species 0.000 claims abstract description 51
- 235000014429 Angelica sylvestris Nutrition 0.000 claims abstract description 51
- 239000004568 cement Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003763 carbonization Methods 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 abstract description 6
- 230000003373 anti-fouling effect Effects 0.000 abstract description 5
- 238000007791 dehumidification Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 241000221535 Pucciniales Species 0.000 abstract 1
- 238000004332 deodorization Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000010348 incorporation Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000001877 deodorizing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000004677 hydrates Chemical class 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 235000020564 organic coffee Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
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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
- 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
- C04B18/10—Burned or pyrolised refuse
- C04B18/101—Burned rice husks or other burned vegetable material
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- 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
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
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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)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
본 발명은 건설 분야에 관한 것으로서, 상세하게는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물에 관한 것이다.The present invention relates to the field of construction, and more particularly, to a concrete composition in which coffee ground ash is mixed.
커피숍에서 배출되는 커피찌꺼기는 셀룰로오스, 헤미셀룰로오스 및 리그닌을 포함한 섬유질, 단백질, 당류의 성분이 풍부한 유기물로 구성되어 있다.(도 1)Coffee grounds discharged from coffee shops are composed of organic matter rich in fibers, proteins, and sugars, including cellulose, hemicellulose, and lignin (FIG. 1).
커피 찌꺼기는 탈취효과가 우수하고 향이 좋을 뿐만아니라 방오성능이 좋고, 악취를 흡착하는 흡착력이 좋은 장점이 있으므로, 이를 콘크리트의 혼화재로 사용하는 방안에 관한 연구가 진행되고 있다.Since coffee grounds have an excellent deodorizing effect, good fragrance, good antifouling performance, and good adsorption power to absorb odors, research is being conducted on how to use them as admixtures for concrete.
커피 찌꺼기를 그대로 콘크리트에 혼입하는 경우, 콘크리트 내부에서 부패하는 문제가 발생하고, 다량의 함수량(약 50%이상)을 포함하고 있어 콘크리트의 강도저하 문제가 발생한다.When coffee grounds are mixed into concrete as it is, problems of decay occur inside the concrete and a large amount of water content (about 50% or more) are included, resulting in a problem of reducing the strength of concrete.
또한 커피는 유분을 포함하므로 시멘트 수화물의 생성에 있어 결합력을 저하시켜 강도저하현상을 유발한다는 문제가 있다.In addition, since coffee contains oil, there is a problem in that it causes a decrease in strength by reducing the bonding force in the creation of cement hydrate.
본 발명은 상기와 같은 문제점을 해결하기 위하여 도출된 것으로서, 커피찌꺼기를 콘크리트에 혼합하여 콘크리트의 방오성능, 제습성능, 탈취효과를 향상시키고, 콘크리트 내부에 배근되는 철근의 녹을 방지하면서도, 콘크리트의 강도저하 문제를 방지할 수 있도록 하는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물을 제시하는 것을 그 목적으로 한다.The present invention was derived to solve the above problems, and coffee grounds are mixed with concrete to improve the antifouling performance, dehumidification performance, and deodorizing effect of concrete, and to prevent rust of reinforcing bars placed inside the concrete, while preventing the strength of the concrete. Its purpose is to propose a concrete composition in which coffee ground ash is mixed to prevent degradation problems.
상기 과제의 해결을 위하여, 본 발명은 시멘트와 커피찌꺼기 애쉬의 혼합물, 세골재, 조골재, 물이 혼입된 콘크리트 조성물에 있어서, 상기 커피찌꺼기 애쉬는 700℃ 이상의 고온에서 탄화되고, 상기 커피찌꺼기 애쉬의 탄화온도가 높아질수록, 상기 혼합물에서 커피찌꺼기 애쉬의 혼입비율이 증가하는 것을 특징으로 하는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물을 제시한다.In order to solve the above problems, the present invention is a concrete composition in which a mixture of cement and coffee ground ash, fine aggregate, coarse aggregate, and water are mixed, wherein the coffee ground ash is carbonized at a high temperature of 700 ° C. or higher, and the coffee ground ash is carbonized As the temperature increases, we propose a concrete composition mixed with coffee ground ash, characterized in that the mixing ratio of coffee ground ash in the mixture increases.
상기 커피찌꺼기 애쉬는 700℃ ~ 1000℃의 고온에서 탄화되고, 상기 혼합물에서 상기 시멘트와 커피찌꺼기 애쉬의 중량비율은 95:5 ~ 90:10인 것이 바람직하다.Preferably, the coffee ground ash is carbonized at a high temperature of 700° C. to 1000° C., and the weight ratio of the cement and coffee ground ash in the mixture is 95:5 to 90:10.
상기 커피찌꺼기 애쉬는 800℃ ~ 1000℃의 고온에서 탄화되고, 상기 혼합물에서 상기 시멘트와 커피찌꺼기 애쉬의 중량비율은 95:5 ~ 90:10인 것이 바람직하다.Preferably, the coffee ground ash is carbonized at a high temperature of 800° C. to 1000° C., and the weight ratio of the cement and coffee ground ash in the mixture is 95:5 to 90:10.
상기 시멘트와 커피찌꺼기 애쉬의 혼합물 360㎏/㎥; 상기 세골재 950 ~ 1000㎏/㎥; 상기 조골재 850 ~ 900㎏/㎥; 상기 물 140 ~ 180㎏/㎥;를 포함하는 것이 바람직하다.360 kg/m 3 of the mixture of the cement and coffee ground ash; 950 ~ 1000 kg / m 3 of the fine aggregate; 850 to 900 kg/m3 of the coarse aggregate; It is preferable to include; 140 ~ 180 kg / m 3 of the water.
고로슬래그 50 ~ 100㎏/㎥;을 더 포함하는 것이 바람직하다.50 ~ 100 kg / m 3 of blast furnace slag;
전체 100 중량부에 대하여, 유동화제 0.5 ~ 2 중량부가 혼입된 것이 바람직하다.It is preferable to incorporate 0.5 to 2 parts by weight of a plasticizing agent based on 100 parts by weight of the total.
본 발명은 커피찌꺼기를 콘크리트에 혼합하여 콘크리트의 방오성능, 제습성능, 탈취효과를 향상시키고, 콘크리트 내부에 배근되는 철근의 녹을 방지하면서도, 콘크리트의 강도저하 문제를 방지할 수 있도록 하는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물을 제시한다.The present invention is a coffee ground ash that can improve the antifouling performance, dehumidification performance, and deodorizing effect of concrete by mixing coffee grounds with concrete, prevent rust of reinforcing bars placed inside the concrete, and prevent the problem of reducing the strength of concrete. A mixed concrete composition is presented.
도 1 이하는 본 발명의 실시예를 도시한 것으로서,
도 1은 커피찌꺼기의 구성성분의 그래프.
도 2는 커피찌꺼기 애쉬의 구성성분의 그래프.1 below shows an embodiment of the present invention,
1 is a graph of components of coffee grounds.
Figure 2 is a graph of the components of coffee grounds ash.
이하, 첨부도면을 참조하여 본 발명의 실시예에 관하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
유기물질인 커피찌꺼기를 반탄화에 의해 안정화시켜 활성탄으로 재활용하기 위한 연구가 이루어지고 있다.Research is being conducted to stabilize organic coffee grounds by torrefaction and recycle them into activated carbon.
이는 커피찌꺼기를 소성로에서 약 500℃ 수준으로 탄화시켜 활성탄을 제조하는 방식으로서, 이러한 탄화 과정에 의해 커피찌꺼기 내에 포함된 유기물이 무기물로 안정화된다. This is a method of producing activated carbon by carbonizing coffee grounds at a level of about 500° C. in a firing furnace, and through this carbonization process, organic substances included in coffee grounds are stabilized into inorganic substances.
특히, 탄화과정에서 변경되는 성분에 의해 pH가 높아지게 되는데, 약 800℃ 이상의 고온으로 탄화된 커피애쉬는 강알칼리화되고, 반응성 및 활성화 물성을 나타낸다.In particular, the pH is increased by the components changed during the carbonization process, and the coffee ash carbonized at a high temperature of about 800 ° C. or higher is strongly alkalized and exhibits reactivity and activating physical properties.
이와 같이, 커피찌꺼기가 애쉬화(탄화)되면서 내부에 포함된 유기물이 무기물로 안정화되고, 그 과정에서 구성성분이 변화한다.In this way, as the coffee grounds are ashified (carbonized), the organic matter contained therein is stabilized as an inorganic material, and in the process, the constituents are changed.
탄화된 커피찌꺼기인 커피찌꺼기 애쉬의 구성 성분을 살펴보면, K2O, CaO, MgO 등이 많음을 확인할 수 있는데, 이들은 물을 만나면 다음과 같이 반응하는 수화반응 물질이다.(도 2)Looking at the components of coffee ground ash, which is carbonized coffee grounds, it can be seen that there are many K 2 O, CaO, MgO, etc., which are hydration substances that react as follows when they meet water. (FIG. 2)
이러한 수화반응 물질은 물과 접촉하여 수화물을 생성하는데, 이 수화물은 콘크리트 내부 구조를 강화하여, 강도와 내구성을 증진시킬 수 있다.These hydration reactants generate hydrates in contact with water, and these hydrates can reinforce the internal structure of concrete to improve strength and durability.
특히 커피찌꺼기 애쉬에 가장 많이 포함된 K2O 성분은 수화반응에 의해 강알칼리성(pH 14)인 KOH 수화물을 생성시킨다.In particular, K 2 O component, which is the most contained in coffee ground ash, generates strong alkalinity (pH 14) KOH hydrate by hydration reaction.
콘크리트 내에 이와 같이 강알칼리성 수화물이 생성되면, 배근된 철근의 표면에 견고한 피막이 형성되므로, 철근의 부식이 방지됨에 따라 콘크리트의 강도, 내구성이 증대된다.When strong alkaline hydrates are generated in concrete in this way, since a strong film is formed on the surface of the reinforcing bars, corrosion of the reinforcing bars is prevented, thereby increasing the strength and durability of the concrete.
나아가, 장기강도증진을 위해 혼입되는 고로슬래그는 그 유리막질이 파괴된 후에 비로소 반응성을 나타내는 잠재수경성 혼화재인데, KOH 수화물은 이러한 고로슬래그의 유리막질을 파괴하여 반응성을 촉진시키는 알칼리 활성자극제의 역할을 할 수 있다.Furthermore, blast furnace slag mixed for long-term strength enhancement is a latent hydraulic admixture that shows reactivity only after the glass film is destroyed. can do.
이에 따라 동등 이상의 강도를 갖는 콘크리트를 제조한다는 전제 하에, 시멘트의 혼입량을 줄이고 혼화재의 혼입량을 늘릴 수 있으므로, 고품질의 저시멘트 콘크리트를 얻도록 한다는 효과가 있다.Accordingly, on the premise of manufacturing concrete having equal or higher strength, it is possible to reduce the mixing amount of cement and increase the mixing amount of the admixture, so there is an effect of obtaining high-quality low-cement concrete.
본 발명에 의한 콘크리트 조성물은 상술한 커피찌꺼기 애쉬의 특성을 활용하기 위한 것으로서, 기본적으로 시멘트와 커피찌꺼기 애쉬의 혼합물, 세골재, 조골재, 물의 혼합에 의해 이루어진다.The concrete composition according to the present invention is to utilize the characteristics of the above-described coffee ground ash, and is basically made by mixing a mixture of cement and coffee ground ash, fine aggregate, coarse aggregate, and water.
여기서 커피찌꺼기 애쉬는 700℃ 이상의 고온에서 탄화되고, 커피찌꺼기 애쉬의 탄화온도가 높아질수록, 혼합물에서 커피찌꺼기 애쉬의 혼입비율이 증가하는 것을 특징으로 한다.Here, the coffee ground ash is carbonized at a high temperature of 700 ° C. or higher, and as the carbonization temperature of the coffee ground ash increases, the mixing ratio of the coffee ground ash in the mixture increases.
표 1은 본 발명에 의한 콘크리트 조성물의 물성을 입증하기 위한 시험의 배합표이다.Table 1 is a composition table of tests to prove the physical properties of the concrete composition according to the present invention.
모든 case에 대하여, 물(W), 잔골재(S), 조골재(G), 유동화재(AD)의 혼입량을 일정하게 하였고, 잔골재율(S/a), 물/바인더비(W/B)도 동일하게 하였다.For all cases, the mixing amount of water (W), fine aggregate (S), coarse aggregate (G), and fluidized fire (AD) was kept constant, and the fine aggregate ratio (S/a) and water/binder ratio (W/B) were also made the same
비교예는 커피찌꺼기 애쉬(CA) 및 고로슬래그(GGBS)를 혼입하지 않은 경우이다.A comparative example is a case in which coffee ground ash (CA) and blast furnace slag (GGBS) are not incorporated.
본 발명의 제1 실시예는 시멘트(C)의 혼입량 중 5 중량%를 커피찌꺼기 애쉬(CA)로 치환하고, 고로슬래그(GGBS)를 추가로 혼입한 경우이다.The first embodiment of the present invention is a case in which 5% by weight of cement (C) is replaced with coffee ground ash (CA) and blast furnace slag (GGBS) is additionally incorporated.
본 발명의 제2 실시예는 시멘트(C)의 혼입량 중 10 중량%를 커피찌꺼기 애쉬(CA)로 치환하고, 고로슬래그(GGBS)를 추가로 혼입한 경우이다.The second embodiment of the present invention is a case in which 10% by weight of the mixed amount of cement (C) is replaced with coffee ground ash (CA) and blast furnace slag (GGBS) is additionally mixed.
표 2는 위 배합에 의해 제조한 공시체의 압축강도 시험결과를 나타낸 것이다.Table 2 shows the compressive strength test results of the specimens prepared by the above mixing.
여기서, '미탄화'는 커피찌꺼기를 건조시킨 후 그대로 혼입한 경우를 의미하고, '500℃ ~ 900℃'는 소성로를 이용하여 커피찌꺼기 애쉬(CA)를 해당 온도에서 탄화시킨 후 혼입한 경우를 의미한다.Here, 'non-carbonization' refers to the case where coffee grounds are dried and mixed as they are, and '500 ℃ ~ 900 ℃' refers to the case where coffee grounds ash (CA) is carbonized at the corresponding temperature using a firing furnace and then mixed. it means.
'미탄화'(탄화하지 않은 커피찌꺼기를 혼입)의 경우, 비교예(커피찌꺼기를 혼입하지 않은 경우)의 콘크리트 압축강도가 가장 높고, 실시예 1,2(커피찌꺼기를 혼입한 경우)의 콘크리트 압축강도가 낮게 나타났으며, 이러한 현상은 커피찌꺼기의 혼입률(치환율)이 클수록 더욱 두드러졌다.In the case of 'uncarbonized' (incorporating non-carbonized coffee grounds), the compressive strength of the concrete of Comparative Example (when coffee grounds are not mixed) is the highest, and the concrete of Examples 1 and 2 (when coffee grounds are mixed) The compressive strength was low, and this phenomenon became more prominent as the mixing ratio (substitution ratio) of the coffee grounds increased.
'500℃'(500℃에서 탄화시킨 커피찌꺼기 애쉬(CA)를 혼입)의 경우, 실시예 1,2(커피찌꺼기 애쉬(CA) 혼입)의 콘크리트 압축강도가 '미탄화'의 경우보다는 다소 높게 나타났지만, 비교예(커피찌꺼기 애쉬(CA) 미혼입)의 콘크리트 압축강도에 비해서는 낮게 나타났다.In the case of '500 ℃' (incorporating coffee ground ash (CA) carbonized at 500 ℃), the concrete compressive strength of Examples 1 and 2 (incorporating coffee ground ash (CA)) was slightly higher than that of 'non-carbonization'. However, it was lower than the concrete compressive strength of the comparative example (coffee ground ash (CA) not mixed).
'700℃'(700℃에서 탄화시킨 커피찌꺼기 애쉬(CA)를 혼입)의 경우, 실시예 1,2(커피찌꺼기 애쉬(CA) 혼입)의 콘크리트 압축강도가 '500℃'의 경우보다 높게 나타났고, 비교예(커피찌꺼기 애쉬(CA) 미혼입)의 콘크리트 압축강도에 비해서는 낮지만 동등 수준에 이르는 것으로 나타났다.In the case of '700℃' (incorporation of coffee grounds ash (CA) carbonized at 700℃), the concrete compressive strength of Examples 1 and 2 (incorporation of coffee grounds ash (CA)) was higher than that of '500℃'. It was lower than the concrete compressive strength of the comparative example (coffee ground ash (CA) not mixed), but it was found to reach the same level.
'900℃'(900℃에서 탄화시킨 커피찌꺼기 애쉬(CA)를 혼입)의 경우, 실시예 1,2(커피찌꺼기 애쉬(CA) 혼입)의 콘크리트 압축강도가 '700℃'의 경우보다 높게 나타났고, 비교예(커피찌꺼기 애쉬(CA) 미혼입)의 콘크리트 압축강도에 비해서도 동등 이상인 것으로 나타났다.In the case of '900 ℃' (incorporation of coffee ground ash (CA) carbonized at 900 ℃), the concrete compressive strength of Examples 1 and 2 (incorporation of coffee ground ash (CA)) was higher than that of '700 ℃' It was found to be equivalent or higher than the concrete compressive strength of the comparative example (coffee ground ash (CA) not mixed).
따라서, 시멘트와 커피찌꺼기 애쉬의 혼합물, 세골재, 조골재, 물의 혼합에 의해 이루어지는 콘크리트 조성물에 있어서, 700℃ 이상의 고온에서 커피찌꺼기 애쉬를 혼입하면, 콘크리트의 강도저하 문제를 방지할 수 있다는 결론을 얻을 수 있다.Therefore, it can be concluded that in a concrete composition made by mixing cement and coffee ground ash, fine aggregate, coarse aggregate, and water, incorporation of coffee ground ash at a high temperature of 700 ° C or higher can prevent the problem of reducing the strength of concrete. have.
즉, 700℃ 이상의 고온에서 커피찌꺼기 애쉬를 콘크리트 조성물에 혼입하는 경우, 콘크리트의 방오성능, 제습성능, 탈취효과를 향상시키고, 콘크리트 내부에 배근되는 철근의 녹을 방지하면서도, 콘크리트의 강도저하 문제를 방지한다는 효과가 있다.That is, when coffee ground ash is mixed into the concrete composition at a high temperature of 700 ° C or higher, the antifouling performance, dehumidification performance, and deodorizing effect of the concrete are improved, and the rust of the reinforcing bars placed inside the concrete is prevented, while the problem of reducing the strength of the concrete is prevented. It works.
또한 표 2의 시험결과에서 알 수 있는 바와 같이, 커피찌꺼기 애쉬의 탄화온도가 높아질수록, 시멘트와 커피찌꺼기 애쉬의 혼합물에서 커피찌꺼기 애쉬의 혼입비율이 증가해도 콘크리트의 강도저하 문제가 없으며, '900℃'(900℃에서 탄화시킨 커피찌꺼기 애쉬(CA)를 혼입)의 경우, 커피찌꺼기 애쉬(CA)의 혼입량이 많으면(실시예 2) 오히려 압축강도가 증가함을 확인할 수 있다.In addition, as can be seen from the test results in Table 2, as the carbonization temperature of coffee grounds ash increases, there is no problem in reducing the strength of concrete even if the mixing ratio of coffee grounds ash in the mixture of cement and coffee grounds ash increases. In the case of ℃ ' (incorporation of coffee ground ash (CA) carbonized at 900 ℃), it can be seen that the compressive strength rather increases when the amount of coffee ground ash (CA) is large (Example 2).
나아가, 표 2의 시험결과에서 다음과 같은 사항을 확인할 수 있다.Furthermore, the following items can be confirmed from the test results in Table 2.
커피찌꺼기 애쉬는 700℃ ~ 1000℃의 고온에서 탄화된 것을 사용하는 것이 바람직하고, 시멘트와 커피찌꺼기 애쉬의 혼합물에서 그 시멘트와 커피찌꺼기 애쉬의 중량비율은 95:5 ~ 90:10인 것이 적절하다.It is preferable to use coffee ground ash carbonized at a high temperature of 700 ℃ ~ 1000 ℃, and in the mixture of cement and coffee ground ash, the weight ratio of the cement and coffee ground ash is appropriate to be 95:5 to 90:10. .
다만, '700℃'(700℃에서 탄화시킨 커피찌꺼기 애쉬(CA)를 혼입)의 경우, 실시예 1,2(커피찌꺼기 애쉬(CA) 혼입)의 콘크리트 압축강도가 비교예(커피찌꺼기 애쉬(CA) 미혼입)의 콘크리트 압축강도에 비해 다소 낮은 것으로 나타났으므로, 커피찌꺼기 애쉬의 탄화온도가 800℃ ~ 1000℃인 것이 더욱 바람직한 것으로 파악된다.However, in the case of '700 ℃' (incorporation of coffee grounds ash (CA) carbonized at 700 ℃), the concrete compressive strength of Examples 1 and 2 (incorporation of coffee grounds ash (CA)) is the comparative example (coffee ground ash (CA) CA) Since it was found to be slightly lower than the concrete compressive strength of unincorporated), it is found that it is more preferable that the carbonization temperature of coffee grounds ash is 800 ℃ ~ 1000 ℃.
표 1의 배합표를 기초로 하면, 시멘트와 커피찌꺼기 애쉬의 혼합물 360㎏/㎥; 세골재 950 ~ 1000㎏/㎥; 조골재 850 ~ 900㎏/㎥; 물 140 ~ 180㎏/㎥; 고로슬래그 50 ~ 100㎏/㎥;을 포함하는 배합비가 적절한 것으로 판단된다.Based on the formulation table in Table 1, a mixture of cement and coffee ground ash 360 kg / m 3; fine aggregate 950 ~ 1000kg/m3; Coarse aggregate 850 ~ 900kg/m3; 140 ~ 180 kg/m 3 of water; 50 ~ 100 kg / m 3 of blast furnace slag; it is determined that the mixing ratio including is appropriate.
전체 100 중량부에 대하여, 유동화제 0.5 ~ 2 중량부가 혼입된 것이 더욱 바람직하다.It is more preferable that 0.5 to 2 parts by weight of the fluidizing agent is incorporated with respect to the total of 100 parts by weight.
이상은 본 발명에 의해 구현될 수 있는 바람직한 실시예의 일부에 관하여 설명한 것에 불과하므로, 주지된 바와 같이 본 발명의 범위는 위의 실시예에 한정되어 해석되어서는 안 될 것이며, 위에서 설명된 본 발명의 기술적 사상과 그 근본을 함께 하는 기술적 사상은 모두 본 발명의 범위에 포함된다고 할 것이다.Since the above has only been described with respect to some of the preferred embodiments that can be implemented by the present invention, as noted, the scope of the present invention should not be construed as being limited to the above embodiments, and the scope of the present invention described above It will be said that the technical idea and the technical idea together with the root are all included in the scope of the present invention.
Claims (6)
상기 커피찌꺼기 애쉬는 800℃ ~ 1000℃의 고온에서 탄화되고,
상기 커피찌꺼기 애쉬의 탄화온도가 높아질수록, 상기 혼합물에서 커피찌꺼기 애쉬의 혼입비율이 증가하고,
상기 혼합물에서 상기 시멘트와 커피찌꺼기 애쉬의 중량비율은 95:5 ~ 90:10이고,
상기 시멘트와 커피찌꺼기 애쉬의 혼합물 360㎏/㎥;
상기 세골재 950 ~ 1000㎏/㎥;
상기 조골재 850 ~ 900㎏/㎥;
상기 물 140 ~ 180㎏/㎥;
고로슬래그 50 ~ 100㎏/㎥;을 포함하는 것을 특징으로 하는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물.In a concrete composition in which a mixture of cement and coffee ground ash, fine aggregate, coarse aggregate, and water are mixed,
The coffee ground ash is carbonized at a high temperature of 800 ° C to 1000 ° C,
As the carbonization temperature of the coffee ground ash increases, the mixing ratio of coffee ground ash in the mixture increases,
The weight ratio of the cement and coffee ground ash in the mixture is 95:5 to 90:10,
360 kg/m 3 of the mixture of the cement and coffee ground ash;
950 ~ 1000 kg / m 3 of the fine aggregate;
850 to 900 kg/m3 of the coarse aggregate;
140 to 180 kg/m 3 of the water;
50 ~ 100 kg / ㎥ of blast furnace slag; Concrete composition mixed with coffee grounds ash, characterized in that it comprises.
전체 100 중량부에 대하여,
유동화제 0.5 ~ 2 중량부가 혼입된 것을 특징으로 하는 커피찌꺼기 애쉬가 혼합된 콘크리트 조성물.According to claim 1,
With respect to the total of 100 parts by weight,
A concrete composition mixed with coffee grounds ash, characterized in that 0.5 to 2 parts by weight of a glidant is incorporated.
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| KR20190113502A (en) * | 2018-03-27 | 2019-10-08 | (주)제이원산업 | Concrete composition and manufacturing |
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| JPH1121159A (en) * | 1997-07-04 | 1999-01-26 | Yoshida Zouen Doboku Kk | Carbide-containing construction material and production thereof |
| KR101574472B1 (en) * | 2015-05-29 | 2015-12-04 | 롯데건설 주식회사 | Binder Composite and Concrete Composite Using Fine Porous Activated Carbon for Foam Concrete |
| KR20170071331A (en) * | 2015-12-15 | 2017-06-23 | 재단법인 포항산업과학연구원 | Method for manufacturing moten iron and method for manufacturing reduction product |
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