KR100272462B1 - Bad ash-containing concrete composition - Google Patents
Bad ash-containing concrete composition Download PDFInfo
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- KR100272462B1 KR100272462B1 KR1019990017248A KR19990017248A KR100272462B1 KR 100272462 B1 KR100272462 B1 KR 100272462B1 KR 1019990017248 A KR1019990017248 A KR 1019990017248A KR 19990017248 A KR19990017248 A KR 19990017248A KR 100272462 B1 KR100272462 B1 KR 100272462B1
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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
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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
- C04B18/14—Waste materials; Refuse from metallurgical processes
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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
- C04B28/16—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 anhydrite, e.g. Keene's cement
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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 Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
본 발명은 시멘트, 골재 등을 함유하며 토목 건축자재로 사용되는 콘크리트 조성물에 관한 것으로서, 보다 구체적으로는 골재의 전부 또는 일부를 배드애쉬(bad ash)로 대체한 고강도의 경량 콘크리트 조성물에 관한 것이다.The present invention relates to a concrete composition containing cement, aggregate, etc. and used as a civil construction material, and more particularly, to a high-strength lightweight concrete composition in which all or part of aggregate is replaced with bad ash.
배드애쉬는 유동사형 소각로에서 제지슬러지의 필터재로 사용한 후 소각로에서 800℃로 소각되어 나오는 폐유동사로서 소각회와는 달리 다양한 입경을 가지고 있다. 이러한 배드 애쉬는 전량 매입하는 방법으로 폐기 처리하여 왔다. 종이의 생산량이 연간 900만톤인 경우 배드애쉬의 발생량은 연간 12만톤에 이르며, 이의 폐기처리에 소요되는 비용이 대략 72억원 정도이다.Bad ash is a waste stream that is incinerated at 800 ℃ in incinerator after being used as filter material for paper sludge in a fluid sand incinerator and has various particle diameters unlike incineration ash. These bad ashes have been disposed of in a total purchase manner. If the amount of paper produced is 9 million tons per year, the amount of bad ash generated is 120,000 tons per year, and the cost of disposal will be about 7.2 billion won.
이와 같이 배드애쉬의 폐기처리에 막대한 비용이 소요되는 것 이외에도 배드 애쉬의 매립부지를 확보하는 것이 곤란하고 또한 폐기처리에 따른 환경오염문제 또한 심각한 실정이다.As described above, in addition to enormous costs for the disposal of the bad ash, it is difficult to secure a landfill of the bad ash and environmental pollution due to the disposal is also serious.
본 발명자는 상기한 바와 같은 문제점을 해소하기 위한 연구에서 배드애쉬의 입자형태가 대부분이 원형이고 직경이 다양하고 경량이며, 이러한 배드애쉬를 특정 성분과 혼합하여 조성한 콘크리트 조성물로 제조한 벽돌 등과 같은 제품이 통상의 것에 비해 공극이 감소하여 강도가 높고 가벼운 제품이 된다는 사실을 알게 되어 본 발명을 완성하게 된 것이다.The present inventors in the study to solve the problems described above, most of the particle shape of the bad ash is circular, various diameters and light weight, products such as bricks made of a concrete composition formed by mixing the bad ash with a specific component The present invention is completed by finding that the voids are reduced compared to the conventional ones, and thus the product is high in strength and light.
즉, 본 발명의 목적은 상술한 바와 같은 많은 문제점을 가지고 있는 배드 애쉬를 재활용하여 고강도 및 초경량의 토목 건축자재의 제조에 적합한 콘크리트 조성물을 제공하는 데에 있다.That is, an object of the present invention is to provide a concrete composition suitable for the production of high-strength and ultra-light civil engineering materials by recycling the bad ash having many problems as described above.
상기한 목적을 달성한 본 발명에 의하면 시멘트와 골재를 함유하는 콘크리트 조성물에 있어서, 골재의 중량기준으로 배드애쉬가 10%이상이고; 중량기준으로 무수석고 60∼80%, 고로슬래그 5∼20% 및 플라이애쉬 5∼20%를 함유하는 혼화재가 시멘트 100 중량부당 10∼30중량부의 비율로 함유되며, 술폰화 멜라민 수지(sulfonated melamine resin)가 시멘트 100 중량부당 2∼6 중량부의 비율로 함유되는 것을 특징으로 하는 콘크리트 조성물이 제공된다.According to the present invention to achieve the above object, in the concrete composition containing cement and aggregate, the bad ash is 10% or more based on the weight of the aggregate; By weight, admixtures containing anhydrous gypsum 60 to 80%, blast furnace slag 5 to 20% and fly ash 5 to 20% are contained in a proportion of 10 to 30 parts by weight per 100 parts by weight of cement, and sulfonated melamine resin ) Is provided in a proportion of 2 to 6 parts by weight per 100 parts by weight of cement.
또한 본 발명에 의하면 시멘트와 골재를 함유하는 콘크리트 조성물에 있어서, 골재의 중량기준으로 배드애쉬가 10%이상이고; 제지슬러지의 소각에 의해 발생하는 소각회가 조성물 총 중량기준으로 30% 이하로 함유되는 것을 특징으로 하는 콘크리트 조성물이 제공된다. 이하 본 발명을 보다 상세하게 설명하기로 한다.In addition, according to the present invention, in the concrete composition containing cement and aggregate, the bad ash is 10% or more based on the weight of the aggregate; An incineration ash generated by incineration of paper sludge is provided in a concrete composition, characterized in that it contains 30% or less based on the total weight of the composition. Hereinafter, the present invention will be described in more detail.
본 조성물중에 배드 애쉬는 골재의 전부 또는 일부를 대체한다. 입도가 큰 배드애쉬는 입도가 작은 골재와 혼합하여 사용하면 공극충전의 효과로 배드애쉬 사용효율이 아주 크고 강도상승 및 흡수율 감소 등의 성능향상에 큰 장점이 있다.Bad ash in the composition replaces all or part of the aggregate. If the particle size of the bad ash is mixed with the aggregate of small particle size, the use of the void ash is very effective due to the void filling effect and the performance improvement such as the strength increase and the decrease in the absorption rate.
예를 들어 골재로서 배드 애쉬와 잔골재를 중량비로 배드애쉬:잔골재=30:70의 비율로 배합하여 통상적인 진동성형방법으로 제작한 크기 190㎜×90㎜×57㎜의 벽돌과 잔골재만을 사용하여 동일한 방법으로 제작한 벽돌을 비교한 바, 전자의 경우 압축강도(8N/㎟)가 약 17.1이고 흡수율이 약 8.2% 인 반면에, 후자의 경우 압축강도(8N/㎟)가 약 15.4이고 흡수율이 약 7.1% 인 것으로 나타났다.For example, the aggregates of bad ash and fine aggregates in a weight ratio of bad ash: fine aggregates = 30:70 are used as the aggregates, and only the same size of bricks and fine aggregates of 190 mm x 90 mm x 57 mm produced by the conventional vibration molding method are used. Compared with the bricks produced by the method, the former has a compressive strength (8N / mm 2) of about 17.1 and an absorption of about 8.2%, while the latter has a compressive strength of about 8N / mm 2 of about 15.4 and an absorption of about 7.1%.
본 조성물의 배드애쉬의 바람직한 함량은 골재의 중량기준으로 10∼100%, 보다 바람직하게 30∼70%가 적당하다. 예를 들어 배드애쉬는 야적장에서 1차로 수분을 건조하고나서 선별기로 10㎜ 이하 또는 5㎜ 이하로 선별한 후 2차로 수분건조하여 사용할 수 있다.The preferred content of the bad ash of the composition is 10 to 100%, more preferably 30 to 70% by weight of the aggregate. For example, the bad ash may be used by first drying the moisture in the yard and then sorting it to 10 mm or less or 5 mm or less using a sorting machine and then drying the water secondly.
본 조성물에는 무수석고 60∼80중량%, 고로슬래그 5∼20중량% 및 플라이애쉬 5∼20중량%를 함유하는 혼화재가 배합될 수 있다. 이 혼화재는 배드애쉬의 공극을 충전하여 제품의 조직을 더욱 치밀하게 하는 작용을 한다. 혼화재는 시멘트 100 중량부당 10∼30중량부의 비율로 함유시키는 것이 바람직하다. 혼화재의 배합비율이 시멘트 100 중량부당 10중량부 미만이면 공극충전효과가 미흡하며, 30중량부를 초과하면 더 이상의 효과상승을 기대하기 어렵다.In the present composition, admixtures containing 60 to 80% by weight of anhydrous gypsum, 5 to 20% by weight of blast furnace slag and 5 to 20% by weight of fly ash may be blended. This admixture fills the voids in the bad ash, making the product's structure more dense. It is preferable to contain a mixed material in the ratio of 10-30 weight part per 100 weight part of cement. If the blending ratio of the admixture is less than 10 parts by weight of cement, the gap filling effect is insufficient, and if it exceeds 30 parts by weight, it is difficult to expect any further increase.
본 조성물에 술폰화 멜라민 수지를 배합하면 배드애쉬의 표면에 수지막이 형성되어 흡수율이 저하된다. 술폰화 멜라민 수지는 고유동화제이며 고성능감수제로서 콘크리트 양생에 영향을 주는 염화물(예: CaCl2)나 망초(Na2SO4)를 전혀 함유하고 있지 않고, 높은 슬럼프(slump)효과에서도 재료분리성이 없다. 여기서 슬럼프 효과란 아직 굳지 않은 콘크리트용의 연한 정도에서 슬럼프콘을 끌어 올린 직후에 측정한 꼭대기 부분에서 밑으로 쳐진 정도를 말한다. 본 조성물에 술폰화 멜라민 수지를 배합하면 분사작용이 우수하여 블리이딩량이 감소하고, 콘크리트 표면이 유리처럼 깨끗하여 후처리가 필요없게 되며, 방수성이 증대되고, 조기강도가 높아져 양생시간을 단축시킬 수 있는 등의 장점을 얻을 수 있게 된다. 본 조성물중 술폰화 멜라민 수지는 시멘트 100 중량부당 2∼6 중량부의 비율로 함유시키는 것이 바람직하다. 술폰화 멜라민 수지의 함량이 시멘트 100 중량부당 2중량부 미만이면 흡수율이 부적합하게 되고, 6중량부를 초과하면 흡수율은 낮아지나 압축강도가 부적합하게 된다.When a sulfonated melamine resin is mix | blended with this composition, a resin film will be formed in the surface of a bad ash, and water absorption will fall. Sulfonated melamine resins are high-flowing agents and high-performance sensitizers that contain no chlorides (e.g. CaCl 2 ) or forget-me-not (Na 2 SO 4 ) that affect concrete curing and material separation even at high slump effects. There is no Here, the slump effect is the extent to which the slump cone is struck down from the top measured immediately after the slump cone is pulled up in the softness level for the concrete which is not yet hardened. When the sulfonated melamine resin is blended with the present composition, the blasting amount is reduced due to the excellent spraying action, and the concrete surface is clean like glass, thus eliminating the need for post-treatment, increasing the waterproofness, and increasing the early strength, thereby shortening the curing time. You can get the advantages of such. It is preferable to contain sulfonated melamine resin in this composition in the ratio of 2-6 weight part per 100 weight part of cement. If the content of sulfonated melamine resin is less than 2 parts by weight per 100 parts by weight of cement, the water absorption becomes inadequate, and when it exceeds 6 parts by weight, the water absorption becomes low but the compressive strength becomes unsuitable.
또한 본 조성물에는 제지슬러지의 소각에 의해 발생하는 소각회를 조성물 총 중량기준으로 30% 이하로 배합할 수 있다. 소각회를 사용하면 콘크리트 2차제품의 표면상태가 평활하게 되는 장점이 있으며, 양생후 조기강도발현의 효과는 낮아지지만 압축강도는 우수하게 되고, 또한 소각회가 분말이므로 제품의 공극을 채워주어 제품의 조직이 치밀하여 지고, 또한 소각회의 중량이 작으므로 제품의 경량화에 유리하다.In addition, incineration ash generated by incineration of paper sludge can be blended with the present composition at 30% or less based on the total weight of the composition. The use of incineration ash has the advantage of smoothing the surface state of the secondary concrete products. After curing, the effect of early strength expression is lowered, but the compressive strength is excellent, and since the incineration ash is powder, it fills the product voids. The structure of is compact and the weight of the incineration ash is small, which is advantageous in lightening the product.
위에 설명한 바와 같은 본발명의 특징 및 기타의 장점은 후술되는 실시예로부터 보다 명백하게 될 것이다. 단 본 발명은 하기 실시예로 한정되는 것이 아님을 이해하여야 한다.Features and other advantages of the present invention as described above will become more apparent from the embodiments described below. It should be understood, however, that the present invention is not limited to the following examples.
[실시예 및 비교예][Examples and Comparative Examples]
* 조성성분의 준비* Preparation of ingredients
하기 실시예에서 사용된 배드애쉬, 혼화재, 술폰화 멜라민수지 및 소각회는 다음과 같은 특성을 갖는 것이었다.The bad ash, admixture, sulfonated melamine resin and incineration ash used in the following examples had the following characteristics.
* 배드애쉬 : 자연시 단위용적중량 1,331 kgf/㎥, 건조시 단위용적중량 1,314 kgf/㎥, 평균입도 3.66, 비중 2.25, 충격시험후 중량감소율 38.84%, 씻기시험후 질량감소율 1.01%, 흡수율 6.57% 및 실적율 58.84%인 배드애쉬를 사용하였다. 이 배드애쉬에 대하여 폐기물 공정시험을 수행한 바, Pb, Cd, Cr, CN-, Hg, As 및 유기인은 불검출되었고 Cu는 검출되었으며, 토양오염 공정시험을 수행한 바, Pb, 페놀, 벤젠, 톨루엔 및 에틸벤젠이 불검출되었다.* Bad ash: unit volume weight 1,331 kgf / ㎥ in nature, unit volume weight 1,314 kgf / ㎥ in drying, average particle size 3.66, specific gravity 2.25, weight loss rate 38.84% after impact test, mass loss rate 1.01% after washing test, water absorption rate 6.57% And bad ash having an earnings rate of 58.84%. Performing a waste process tested for the bad ash bar, Pb, Cd, Cr, CN -, Hg, As, and organic phosphorus were not detected Cu has been detected, the bar performing a soil contaminated process test, Pb, phenol, benzene , Toluene and ethylbenzene were not detected.
* 혼화재 : 무수석고 60중량%, 고로슬래그 20중량% 및 플라이애쉬 20중량%로 이루어진 것을 사용하였다. 이 혼화재의 비중은 2.77이었고 분말도는 7,330이었으며, 화학적 구성은 SiO 9.28%, Al2O32.65%, Fe2O30.65%, CaO 44.7%, SO339.8%, MgO 0.80%, K2O 0.16%, Na2O 0.26, 연소손실(Ig-loss) 1.36% 이었다.* Mixed material: Anhydrous gypsum 60% by weight, blast furnace slag 20% by weight and fly ash 20% by weight was used. The specific gravity of the admixture was 2.77 and the powder degree was 7,330.The chemical composition was 9.28% SiO, 2.65% Al 2 O 3 , 0.65% Fe 2 O 3 , CaO 44.7%, SO 3 39.8%, MgO 0.80%, K 2 O 0.16%, Na 2 O 0.26, combustion loss (Ig-loss) 1.36%.
* 술폰화 멜라민 수지 : 비중 1.24±0.02, 유효성분 55±3%, pH 8.5∼9.5±1이고, 음이온성이며 염화물이 없는 엷은 갈색 투명 액체인 술폰화 멜라민 수지를 사용하였다.Sulfonated melamine resin: Specific gravity 1.24 ± 0.02, active ingredient 55 ± 3%, pH 8.5∼9.5 ± 1, an anionic, chloride-free light brown transparent liquid sulfonated melamine resin was used.
*소각회 : 입도크기 19.61±0.2, 단위용적중량 704 kg/㎥* Incineration ash: particle size 19.61 ± 0.2, unit weight 704 kg / ㎥
[실시예 1 및 비교예 1]Example 1 and Comparative Example 1
하기 표 1에 나타낸 비율로 잔골재와 배드애쉬를 혼합하고 여기에 시멘트와 혼화재를 투입하여 3분간 배합한 후 물과 술폰화 멜라민 수지를 혼합하여 조성한 조성물을 사용하여 통상의 방법으로 콘크리트 벽돌을 제조하였다. 비교예의 경우에는 배드애쉬, 혼화재 및 술폰화 멜라민 수지를 사용하지 않았다.In the ratio shown in Table 1, fine aggregate and bad ash were mixed, and cement and admixture were added thereto, followed by mixing for 3 minutes, and then concrete and concrete bricks were prepared by using a composition prepared by mixing water and sulfonated melamine resin. . In the case of the comparative example, bad ash, admixture and sulfonated melamine resin were not used.
비교예 1의 콘크리트 벽돌은 압축강도 158kgf/㎠, 흡수율 7.1%이었으나, 실시예 1의 경우에는 압축강도 180kgf/㎠, 흡수율 7.0%이었다.The concrete brick of Comparative Example 1 had a compressive strength of 158 kgf / cm 2 and an absorption rate of 7.1%. In the case of Example 1, the compressive strength was 180 kgf / cm 2 and an absorption rate of 7.0%.
[실시예 2 및 비교예 2]Example 2 and Comparative Example 2
하기 표 2에 나타낸 비율로 잔골재와 배드애쉬를 혼합하고 여기에 시멘트와 혼화재를 투입하여 3분간 배합한 후 물과 술폰화 멜라민 수지를 혼합하여 조성한 조성물을 사용하여 통상의 방법으로 중공형 콘크리트 블록을 제조하였다. 비교예의 경우에는 배드애쉬, 혼화재 및 술폰화 멜라민 수지를 사용하지 않았다.In the ratio shown in Table 2, fine aggregate and bad ash were mixed, and cement and admixture were added thereto, followed by mixing for 3 minutes, followed by mixing the water and sulfonated melamine resin. Prepared. In the case of the comparative example, bad ash, admixture and sulfonated melamine resin were not used.
비교예 2의 콘크리트 벽돌은 압축강도 102kgf/㎠, 흡수율 6.8%이었으나, 실시예 2의 경우에는 압축강도 116kgf/㎠, 흡수율 7.2%이었다.The concrete brick of Comparative Example 2 had a compressive strength of 102 kgf / cm 2 and an absorption rate of 6.8%, but in the case of Example 2, the compressive strength was 116 kgf / cm 2 and an absorption rate of 7.2%.
[실시예 3 및 비교예 3]Example 3 and Comparative Example 3
하기 표 3에 나타낸 비율로 잔골재와 배드애쉬를 혼합하고 여기에 시멘트와 혼화재를 투입하여 3분간 배합한 후 물과 술폰화 멜라민 수지를 혼합하여 조성한 조성물을 사용하여 통상의 방법으로 콘크리트 인터로킹 블록을 제조하였다. 비교예의 경우에는 배드애쉬, 혼화재 및 술폰화 멜라민 수지를 사용하지 않았다.In the ratio shown in Table 3, fine aggregate and bad ash were mixed, and cement and admixture were added thereto, followed by mixing for 3 minutes, and then the concrete interlocking block was prepared using a composition prepared by mixing water and sulfonated melamine resin. Prepared. In the case of the comparative example, bad ash, admixture and sulfonated melamine resin were not used.
비교예 3의 인터로킹 블록은 휨강도 62kgf/㎠, 흡수율 5.9%이었으나, 실시예 3의 경우에는 휨강도 68kgf/㎠, 흡수율 6.4%이었다.The interlocking block of Comparative Example 3 had a bending strength of 62 kgf / cm 2 and an absorption rate of 5.9%. In Example 3, the interlocking block had a bending strength of 68 kgf / cm 2 and an absorption rate of 6.4%.
[실시예 4 내지 5 및 비교예 4 내지 5][Examples 4 to 5 and Comparative Examples 4 to 5]
배드애쉬, 잔골재, 혼화재 및 술폰화 멜라민수지의 배합비율을 하기 표 4와 같이 하여 수동 진동성형으로 배드애쉬 배합별 성능을 시험하였다.The mixing ratio of the bad ash, fine aggregate, admixture, and sulfonated melamine resin was tested as shown in Table 4 below, and the performance of each bad ash mixture was measured by manual vibration molding.
[실시예 6 내지 8][Examples 6 to 8]
하기 표 5에 제시되는 배합비율로 조성한 콘크리트 조성물을 진동성형하고 증기 양생하여 벽돌을 제조하였다.The brick composition was prepared by vibrating and steam curing the concrete composition prepared at the mixing ratio shown in Table 5 below.
실험결과 소각회를 사용하면 벽돌의 표면이 양호하고 매끄러우나 증기양생이 끝나고 조기강도에서 강도 발현의 효과가 낮아지지만 7일 이후의 압축강도는 매우 우수하였다. 특히 소각회가 분말이므로 제품의 공극율을 메꿔주어 제품의 조직이 치밀하여지고 소각회의 중량이 낮으므로 제품의 경량화가 이루어졌다.Experimental results show that the use of incineration ash is good and smooth, but the effect of strength development at early strength is lowered after steam curing, but the compressive strength after 7 days is very good. In particular, since incineration ash is a powder, it fills the porosity of the product so that the structure of the product becomes dense and the weight of the incineration ash is low, resulting in a lighter weight of the product.
이상 설명한 바와 같이, 본 발명은 환경오염을 유발하고 그 처리에 막대한 비용이 소요되는 배드 애쉬를 재활용하여 고강도 및 초경량의 토목 건축자재의 제조에 적합한 콘크리트 조성물을 제공하는 신규 유용의 발명인 것이다.As described above, the present invention is a novel useful invention that provides a concrete composition suitable for the production of high-strength and ultra-light civil engineering materials by recycling bad ash, which causes environmental pollution and requires a huge cost.
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| KR101366174B1 (en) * | 2012-04-05 | 2014-02-25 | 유진기업 주식회사 | Ecofriendly cement binder composite |
| KR101409784B1 (en) * | 2012-12-11 | 2014-06-19 | 유진기업 주식회사 | Admixture for concrete comprising high calcium ash and Fly-ash |
| KR102503145B1 (en) * | 2020-06-16 | 2023-02-24 | 주식회사 대웅 | Expandable mortar composition and pile construction method |
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