KR100878665B1 - Manufacturing method of cement for solidifying industrial waste using waste concrete and the cement thereby - Google Patents
Manufacturing method of cement for solidifying industrial waste using waste concrete and the cement thereby Download PDFInfo
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- KR100878665B1 KR100878665B1 KR20020052102A KR20020052102A KR100878665B1 KR 100878665 B1 KR100878665 B1 KR 100878665B1 KR 20020052102 A KR20020052102 A KR 20020052102A KR 20020052102 A KR20020052102 A KR 20020052102A KR 100878665 B1 KR100878665 B1 KR 100878665B1
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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
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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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Abstract
본 발명은 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법에 관한 것으로,The present invention relates to a cement manufacturing method for solidifying hazardous waste using waste concrete,
폐콘크리트를 분쇄하고 600-900℃로 하소하는 단계, 및 하소된 폐콘크리트 미분말을 40-45중량%, 고로슬래그 미분말을 40-45중량%, 반수석고 및/또는 무수석고를 5-10중량% 그리고 포틀랜드 시멘트를 5-10중량%로 혼합하는 단계로 이루어짐을 특징으로 하는 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법 및 이로부터 제조된 시멘트가 제공된다.Pulverizing the waste concrete and calcining at 600-900 ° C., 40-45% by weight of the calcined waste concrete powder, 40-45% by weight of blast furnace slag fine powder, 5-10% by weight of hemihydrate gypsum and / or anhydrous gypsum. And there is provided a cement manufacturing method and cement prepared therefrom for the solidification of hazardous waste using waste concrete, characterized in that the step consisting of mixing 5-10% by weight of Portland cement.
본 발명에 의하면, 폐콘크리트를 제철 발생 부산물인 고로슬래그와 함께 사용하여 시멘트로 재생산하기때문에 경제적으로 시멘트를 제조할 수 있으며, 폐콘크리트로인한 환경오염을 방지할 수 있는 효과가 있다. According to the present invention, since waste concrete is used together with blast furnace slag, which is a by-product of steelmaking, it is regenerated into cement, so that cement can be economically produced, and environmental pollution caused by waste concrete can be prevented.
폐콘크리트, 고로슬래그, 시멘트, 하소, 폐기물Waste concrete, blast furnace slag, cement, calcining, waste
Description
본 발명은 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법 및 이로부터 제조된 시멘트에 관한 것으로, 보다 상세하게는 폐콘크리트 미분말을 하소하고, 고로슬래그 미분말, 석고 및 포틀랜드 시멘트를 적절히 혼합하여 폐콘크리트의 수화성을 향상시킨 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법 및 이로부터 제조된 시멘트에 관한 것이다.
The present invention relates to a method for producing hazardous waste solidification cement using waste concrete and to cement produced therefrom, and more particularly, to calcined waste concrete fine powder, and to properly mix blast furnace slag fine powder, gypsum and portland cement with the number of waste concrete. It relates to a method for producing a cement for hazardous waste solidification using waste concrete with improved chemical properties and to a cement produced therefrom.
재건축, 재개발 사업의 활성화 등에 의한 시설물의 해체로 발생되는 콘크리트 폐재는 해를 거듭할수록 증가하고 있고 이러한 폐기물은 주로 매립하여 처리되어 왔으나 매립지 확보 자체가 또 다른 문제로 제기되고 있고 환경 보존 및 자원의 재활용 관점에서 폐콘크리트를 경제적으로 이용하는 방안은 매우 중요하다고 할 수 있다. Concrete waste generated by dismantling of facilities due to reconstruction and revitalization of redevelopment projects has been increasing year after year, and these wastes have been mainly disposed of in landfills, but landfilling itself has been raised as another problem. From the point of view, it is very important to use waste concrete economically.
분쇄된 폐콘크리트를 시멘트 또는 콘크리트 재료로 활용하는 방안으로는 조 골재 및 세골재로 분리하여 콘크리트용 골재로 재활용하는 것이 적극적으로 검토되고 있으며 이러한 골재를 분리하여 얻은 폐콘크리트 미분말에 석회석 미분말등을 가해 소성하여 재생시멘트를 제조하려는 시도가 있었다.In order to utilize the pulverized waste concrete as cement or concrete material, it is actively considered to separate it into coarse aggregate and fine aggregate and recycle it as concrete aggregate. Attempts have been made to produce recycled cement.
현재까지의 폐콘크리트를 활용하는 방법으로는 대한민국 특허공고 제2001-079697호에 개시된 폐콘크리트를 이용한 재생골재 제조방법으로 분쇄, 선별, 세척과정을 거쳐 골재로 재활용하는 방법이며, 대한민국 특허공고 제87-9236호에 개시된 기술은 미사용 콘크리트에 수화 억제제를 첨가하고 다시 촉진제를 첨가하여 응고 가능한 상태로 복원하여 활용하는 방법이 있고, 대한민국 특허공고 제2000-056766호에 개시된 기술은 폐콘크리트 40~70중량%, 오니류 20~50중량%, 소각재 4~34중량%, 석면 1~31중량%, 폐주물사 4~34중량%, 시멘트 1~31중량%로 구성된 혼합물 중량에 대하여 물 15~30중량%를 첨가하여 콘크리트 조성물을 제조하는 방법이 있으며, 폐콘크리트를 활용하지는 않으나 고로슬래그와 폐석고를 활용하는 방법으로서는 대한민국 특허공고 제2000-072623호에 개시된 기술로 폐석고 40~80중량%, 고로슬래그 미분말 15~55중량%, 시멘트 0~10중량%, 소석회 0~10중량%, 자극제 0~10중량%를 건식혼합한 후 60~85℃의 온도에서 양생하여 콘크리트 2차제품을 제조하는 기술 등이 개시되어 있다.As a method of utilizing waste concrete to date, it is a method of manufacturing recycled aggregate using waste concrete disclosed in Korean Patent Publication No. 2001-079697, which is recycled to aggregate after crushing, screening, and washing. The technique disclosed in -9236 has a method of restoring to a solidified state by adding a hydration inhibitor to the unused concrete and adding an accelerator again, and the technique disclosed in Korean Patent Publication No. 2000-056766 is used for 40 to 70 weight of waste concrete. %, 15 to 30% by weight of water, 20 to 50% by weight of sludge, 4 to 34% by weight of incineration ash, 1 to 31% by weight of asbestos, 4 to 34% by weight of waste foundry sand, and 1 to 31% by weight of cement. There is a method for producing a concrete composition, and does not use waste concrete, but as a method of using the blast furnace slag and waste gypsum disclosed in Korean Patent Publication No. 2000-072623 By dry mixing 40 ~ 80% by weight of waste gypsum, 15 ~ 55% by weight of blast furnace slag, 0 ~ 10% by weight of cement, 0 ~ 10% by weight of slaked lime, and 0 ~ 10% by weight of stimulant at 60 ~ 85 ℃ Disclosed are techniques for curing and producing concrete secondary products.
그러나, 현재까지의 기술은 폐콘크리트 미분말의 수화성상의 활용측면보다는 혼합재료로 활용되어지는 기술과 선별작업에 의한 골재로의 재활용 기술이 대부분이며, 폐콘크리트가 갖는 단점인 낮은 수화반응성을 해결하여 시멘트 제조에 재활용가능하도록 하는 폐콘크리트를 이용한 시멘트 제조 기술은 아직까지 제안된 바 없다.However, the current technology is mostly used as a mixed material and recycling technology to aggregate by the sorting process, rather than the utilization aspect of the waste concrete fine powder, and solves the low hydration reactivity which is a disadvantage of the waste concrete. There is no proposed technique for producing cement using waste concrete to make it recyclable for cement production.
이에 본 발명의 목적은 폐콘크리트 미분말을 특정온도에서 열처리하고, 고로슬래그 미분말, 석고 및 포틀랜드 시멘트를 적절히 혼합하여 시멘트를 제조함으로써 폐콘크리트에 잔존해 있는 Ca(OH)2, 미수화 시멘트 성분의 수화반응성을 향상시킨 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법을 제공하는 것이다.Accordingly, an object of the present invention is to hydrate the Ca (OH) 2 and the unhydrated cement components remaining in the waste concrete by heat-treating the waste concrete powder at a specific temperature, and preparing a cement by properly mixing the blast furnace slag powder, gypsum and portland cement. It is to provide a cement manufacturing method for solidifying hazardous waste using waste concrete with improved reactivity.
본 발명의 다른 목적은 상기 방법으로 제조된 유해 폐기물 고화용 시멘트를 제공하는 것이다.Another object of the present invention is to provide a cement for solidifying hazardous waste prepared by the above method.
본 발명의 일견지에 의하면, According to one aspect of the invention,
폐콘크리트를 분쇄하고 600-900℃로 하소하는 단계, 및 하소된 폐콘크리트 미분말을 40-45중량%, 고로슬래그 미분말을 40-45중량%, 반수석고 및/또는 무수석고를 5-10중량% 그리고 포틀랜드 시멘트를 5-10중량%로 혼합하는 단계로 이루어짐을 특징으로 하는 폐콘크리트를 이용한 유해 폐기물 고화용 시멘트 제조방법이 제공된다.Pulverizing the waste concrete and calcining at 600-900 ° C., 40-45% by weight of the calcined waste concrete powder, 40-45% by weight of blast furnace slag fine powder, 5-10% by weight of hemihydrate gypsum and / or anhydrous gypsum. And it provides a method for producing a cement for hazardous waste solidification using waste concrete, characterized in that the step consisting of mixing 5-10% by weight of Portland cement.
본 발명의 다른 견지에 의하면, 상기 방법에 의해 제조된 유해 폐기물 고화용 시멘트가 제공된다.
According to another aspect of the present invention, there is provided a cement for hazardous waste solidification produced by the above method.
이하, 본 발명에 대하여 보다 상세히 설명한다.
Hereinafter, the present invention will be described in more detail.
본 발명자들은 폐콘크리트를 미분말화하고 고온에서 하소한 후, 이것을 고로슬래그 미분말, 반수석고 및/또는 무수석고 및 포틀랜트 시멘트와 적절히 혼합하는 경우에 폐콘크리트의 수화반응성이 활성화되고 고로슬래그 미분말이 수경성을 발휘하게 되어 폐콘크리트를 이용하여 시멘트 제조가 가능함을 발견하였다.
The present inventors have found that the fine powder of waste concrete is calcined at high temperature, and then, when appropriately mixed with blast furnace slag fine powder, hemihydrate gypsum and / or anhydrous gypsum and portland cement, the hydration reactivity of the waste concrete is activated and the blast furnace slag fine powder is hydrophobic. It was found that it is possible to manufacture cement using waste concrete.
먼저, 폐콘크리트를 분쇄기를 이용하여 미분말화한 다음, 이것을 시멘트 클링커 소성온도보다 낮은 600-900℃의 온도로 하소한다. First, the waste concrete is pulverized using a grinder and then calcined to a temperature of 600-900 ° C. lower than the cement clinker firing temperature.
콘크리트는 대기중에 노출되어 있어 시간이 지남에 따라 탄산화반응으로 시멘트와 같은 급격한 수화반응성이 없으나, 본 발명의 방법에 따라 하소된 폐콘크리트 미분말은 일부 결합수와 탄산화물이 제거되어 수화성이 증가된다. 이러한 사실은 하소후 폐콘크리트 미분말을 재수화시킨 결과 수화 12시간에 이미 Ca(OH)2가 생성되어 수화성을 회복하였음을 알 수 있었다. 한편, 여기서 폐콘크리트 미분말을 600℃이하로 또는 900℃이상으로 하소하는 경우에는 시멘트의 강도가 저하될 수 있어 바람직하지않다.
Concrete is exposed to the atmosphere, so there is no rapid hydration reaction such as cement due to carbonation reaction over time, but the waste concrete fine powder calcined according to the method of the present invention increases the hydration property by removing some bonding water and carbonate. . This fact indicates that after calcination of the finely divided waste concrete, Ca (OH) 2 was already produced at 12 hours of hydration, thereby recovering hydration. On the other hand, when the waste concrete fine powder is calcined below 600 ° C or above 900 ° C, the strength of the cement may be lowered, which is not preferable.
그 다음, 상기 하소된 폐콘크리트 미분말을 40-45중량%, 고로슬래그 미분말을 40-45중량%, 반수석고 및/또는 무수석고를 5-10중량% 그리고 포틀랜드 시멘트를 5-10중량%로 하여 서로 혼합한다. Then, 40-45% by weight of the calcined waste concrete powder, 40-45% by weight of blast furnace slag fine powder, 5-10% by weight of hemihydrate gypsum and / or anhydrous gypsum and 5-10% by weight of Portland cement Mix with each other.
상기 하소된 폐콘크리트 미분말을 45중량%이상으로 너무 많이 혼합하는 경우, 수화능이 부족하게 되어 바람직하지않으며, 40중량%이하로 혼합하게되면, 이에 따라 고로슬래그 미분말의 함량비가 증가하므로 경제성을 확보하지 못하게 되어 바람직하지않다.When the calcined waste concrete fine powder is mixed too much at more than 45% by weight, it is not preferable because the hydration capacity is insufficient, and when mixed at less than 40% by weight, the content ratio of the blast furnace slag fine powder is increased accordingly, do not secure economic efficiency It is not desirable to do so.
본 발명에 사용된 고로슬래그 미분말은 수화성을 더욱 증가시키기위해 첨가되는 것으로, 그 성분은 일반적으로 CaO, SiO2, Al2O3, MgO 등이 93-98중량%를 차지하며 그 외 소량의 SO3, Fe2O3, MnO 및 알카리로 이루어져있다. 그 조성의 일례를 하기 표 1에 나타내었다. The blast furnace slag powder used in the present invention is added to further increase the hydrability, and the components thereof generally include 93% to 98% by weight of CaO, SiO 2 , Al 2 O 3 , MgO, and the like. Consists of SO 3 , Fe 2 O 3 , MnO and alkali. An example of the composition is shown in Table 1 below.
상기 고로슬래그 미분말은 수화에 필요한 CaO를 충분히 가지고 있어 폐콘크리트만으로는 부족한 수화성을 보완해 주는 작용을 하며, 또한 잠재수경성을 가져 알카리성 또는 황산염의 자극물을 첨가하여 OH- 이온이나 SO4 2- 이온이 충분히 존재하도록 하면, 포틀랜드 시멘트와 같은 강한 수경성을 발휘하게 되어 CaO-SiO2-H2O계 결정상을 형성하여 경화될 수 있다. 이에 고로슬래그 미분말의 수경성을 유발시키는 자극물로서 본 발명에서는 SO4 2- 이온을 제공하는 반수석고 및/또는 무수석고를 혼합한다. 한편, 상기 고로슬래그 미분말을 만일, 45중량%이상으로 너무 많이 혼합하는 경우, 경제성 확보에 문제점이 있어 바람직하지 않으며, 또한, 40중량%이하로 혼합하게 되면, 장기재령시 압축강도 저하의 원인이 되어 바람직하지않다.The blast furnace slag has got enough have the CaO necessary for the sign language, and a function to complement the insufficient number alone waste concrete Mars, and the latent hydraulic brought the addition of the irritant or alkali sulfate by OH- ions and SO 4 2- ions When sufficiently present, it exhibits a strong hydraulic property such as portland cement and can form and harden a CaO—SiO 2 —H 2 O based crystal phase. As a stimulant for inducing hydraulic properties of blast furnace slag powder, in the present invention, hemihydrate gypsum and / or anhydrous gypsum which provides SO 4 2- ion is mixed. On the other hand, if the blast furnace slag fine powder is mixed too much at 45% by weight or more, it is not preferable because there is a problem in securing economic feasibility, and if it is mixed at 40% by weight or less, the cause of lowering the compressive strength during long-term aging Not preferred.
반수석고 및/또는 무수석고는 상술한 바와 같이, 고로슬래그 미분말의 수경성을 유발시키기위해 첨가되는 것이며, 또한, 강도를 높여주는 작용을 한다. 만일, 반수석고 및/또는 무수석고를 5중량%미만으로 혼합하는 경우, 고로슬래그의 수경성을 유발하는 자극성분의 부족으로 수화능이 부족하게되며, 10중량%이상으로 혼합하는 경우에는 첨가량에 비해 수경성을 유발하는 자극효과가 적어 비효과적이다. Hemihydrate gypsum and / or anhydrous gypsum is added to induce hydraulic properties of blast furnace slag fine powder as described above, and also serves to increase strength. If the mixture of hemihydrate gypsum and / or anhydrous gypsum is less than 5% by weight, the hydration ability is insufficient due to the lack of irritating ingredients causing the hydraulic properties of the blast furnace slag. It is ineffective because it has little irritating effect.
그리고 포틀랜드 시멘트는 수경성을 더욱 증가시키기위해 첨가되는 것으로, 5-10중량%로 혼합된다. 만일, 5중량%미만으로 혼합하는 경우, 상기 반수 또는 무수석고와 마찬가지로 수경성을 유발하는 자극효과가 저하되고, 10중량%이상으로 혼합하는 경우에는 효과는 더이상 증가하지않고 비용이 많이 발생하므로 비경제적이어서 바람직하지 않다. Portland cement is added to further increase the hydraulic properties and is mixed at 5-10% by weight. If the mixture is less than 5% by weight, the irritation effect causing the hydraulicity is reduced, as in the case of the hemihydrate or anhydrous gypsum, and when the mixture is mixed at 10% by weight or more, the effect does not increase any more and the cost is generated. It is then undesirable.
이렇게 혼합하여 제조된 본 발명의 폐콘크리트를 이용한 시멘트는 그 안에 포함된 폐콘크리트 미분말이 이미 하소된 상태로 존재하고 다른 성분들로 더 이상의 하소를 필요로하지않기때문에, 부가적으로 하소하는 공정을 거칠 필요가 없다. The cement using the waste concrete of the present invention prepared by mixing is additionally calcined because the waste concrete fine powder contained therein is already calcined and does not need any further calcining with other components. There is no need to be rough.
본 발명에 의해 제조된 시멘트는 폐콘크리트 미분말을 함유하고 있기 때문에 일반 건축용으로 사용하기보다는 예를들어, 산업슬러지나 준설오니 또는 하수오니 등의 고화처리와 같은 유해 폐기물 고화용으로 사용하는 것이 바람직하다.
Since the cement produced by the present invention contains finely ground concrete, it is preferable to use it for the solidification of hazardous wastes such as, for example, industrial sludge, dredging sludge or sewage sludge.
이하, 실시예를 통하여 본 발명을 보다 상세히 설명한다.
Hereinafter, the present invention will be described in more detail with reference to Examples.
실시예 1Example 1
폐콘크리트 미분말을 400, 600, 800, 1000℃로 각각 다른 온도에서 하소한 후, 하기 표 2에 나타낸 바와 같은 조성으로, 각각의 성분들을 혼합하여 시멘트를 제조하였다. 이렇게 제조된 시멘트를 모래와 혼합(시멘트:모래=40:60, W/C(물/시멘트)=0.35)하여 KS L 5105(수경성 시멘트 모르타르의 압축강도 시험방법)에 규정한 강도 시험용 공시체 제작법에 의거 성형하고 성형 후 20±1℃의 실내에서 몰드와 함께 습윤상태를 유지하고 성형 24시간 후에 탈형하여 20±1℃의 수중에 수침양생한 후 양생기간별로 압축강도를 측정하였다.The waste concrete fine powders were calcined at different temperatures to 400, 600, 800, and 1000 ° C., respectively, and then mixed with each of the components to prepare a cement, as shown in Table 2 below. The cement prepared in this way is mixed with sand (cement: sand = 40: 60, W / C (water / cement) = 0.35) and subjected to the test method for strength test specimen prescribed in KS L 5105 (Test method for compressive strength of hydraulic cement mortar). After molding, the mold was kept wet together with the mold in a room of 20 ± 1 ℃, demolded 24 hours after molding, and water-immersed in water at 20 ± 1 ℃, and then the compressive strength was measured for each curing period.
상기 표 2에 나타낸 바와 같이, 폐콘크리트 미분말을 600℃, 800℃의 온도로 하소하여 혼합한 경우(발명예 1, 2), 28일 압축강도가 각각 240, 215kgf/㎠로 상대적으로 우수한 강도를 나타내었다.
As shown in Table 2, when the waste concrete fine powder was calcined and mixed at a temperature of 600 ° C. and 800 ° C. (Invention Examples 1 and 2), the compressive strengths of 28 days were 240 and 215 kgf / cm 2, respectively. Indicated.
실시예 2Example 2
600℃로 하소한 폐콘크리트 미분말을 이용하여 하기 표 3에 나타낸 바와 같은 조성으로, 각각의 성분들을 혼합하여 시멘트를 제조하였다. 이렇게 제조된 시멘트를 모래와 혼합(시멘트:모래=40:60, W/C=0.35)한 다음 실시예 1과 같은 조건으로 수침양생한 후 양생기간별 압축강도를 측정하였다.Using the waste concrete fine powder calcined at 600 ℃ to the composition as shown in Table 3 below, by mixing the respective components to prepare a cement. The cement thus prepared was mixed with sand (cement: sand = 40: 60, W / C = 0.35), and then immersed under the same conditions as in Example 1, and then the compressive strength for each curing period was measured.
상기 표 3에 나타낸 바와 같이, 폐콘크리트 미분말과 고로슬래그 미분말을 각각 40-45중량%범위내로 혼합하고 그리고 석고와 포틀랜드 시멘트를 각각 5-10중량%범위내로 혼합하여 제조한 경우, 가장 높은 강도값을 나타내었다.
As shown in Table 3 above, when the waste concrete powder and blast furnace slag powder were mixed in the range of 40-45 wt%, and the gypsum and portland cement were mixed in the range of 5-10 wt%, respectively, the highest strength value was obtained. Indicated.
실시예 3Example 3
600-900℃로 하소한 폐콘크리트 미분말을 이용하여 하기 표 4에 나타낸 바와 같은 조성으로, 각각의 성분들을 혼합하여 시멘트를 제조하였다. 이렇게 제조된 시멘트를 유해 폐기물 고화에 적용시키기 위하여 철강 산업 슬러지 60중량%에 상기 시멘트 40중량%를 혼합하여 25℃, 상대습도 100%의 항온 항습조에서 양생한 후, 양생되어 얻어진 고화체의 압축강도를 양생기간별로 측정하였다(혼합시 W/C=0.35).Using waste concrete finely calcined at 600-900 ° C., cements were prepared by mixing the respective components with the composition as shown in Table 4 below. In order to apply the cement thus prepared to hazardous waste solidification, 60 wt% of the steel industry sludge was mixed with 40 wt% of the cement, and then cured in a constant temperature and humidity bath at 25 ° C. and 100% relative humidity. Was measured by curing period (w / c = 0.35 when mixed).
상기 표 4에 나타난 바와 같이, 본 발명의 폐콘크리트를 이용한 시멘트로 철강 산업 슬러지를 고화한 경우, 7일 강도가 138kgf/㎠, 145kgf/㎠로 나타나, 본 발명의 시멘트가 산업슬러지를 고화시켜 안정화하는 데 사용될 수 있음을 알 수 있다.
As shown in Table 4, when the steel industry sludge solidified with the cement using the waste concrete of the present invention, 7 days strength is shown to be 138kgf / ㎠, 145kgf / ㎠, the cement of the present invention is solidified by stabilizing the industrial sludge It can be seen that it can be used to.
본 발명에 의하면, 현재 골재로 재활용되고 있는 폐콘크리트를 분쇄하여 제철 발생 부산물인 고로슬래그와 함께 사용하여 시멘트로 재생산하기때문에 경제적으로 시멘트를 제조할 수 있으며, 또한 환경문제를 일으키는 콘크리트 구조해체 부산물을 처리함으로써 환경오염을 방지할 수 있는 효과가 있다. According to the present invention, it is possible to economically produce cement because it is recycled to cement by crushing the waste concrete that is currently recycled as aggregate and used with blast furnace slag, a by-product of steelmaking, and also produces concrete structural by-products that cause environmental problems. The treatment has the effect of preventing environmental pollution.
또한, 본 발명은 산업슬러지나 준설오니, 하수오니 등의 고화처리에 유용하게 사용될 수 있다.In addition, the present invention can be usefully used for the solidification treatment of industrial sludge, dredge sludge, sewage sludge and the like.
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| KR100879247B1 (en) * | 2007-06-22 | 2009-01-16 | 황승호 | Manufacturing method of the high functional construction material using concrete waste |
| KR100968073B1 (en) * | 2008-06-30 | 2010-07-08 | 한국세라믹기술원 | Slag cement composition |
| KR200457831Y1 (en) * | 2009-07-02 | 2012-01-05 | 양학래 | anchorage device |
| KR101300680B1 (en) * | 2011-09-29 | 2013-08-26 | 재단법인 포항산업과학연구원 | Concrete composite and bank protection block by using slag |
| CN109652081B (en) * | 2019-01-24 | 2020-08-25 | 长江师范学院 | Preparation method of acid soil conditioner |
| CN112608044A (en) * | 2020-11-21 | 2021-04-06 | 湖北京兰水泥集团有限公司 | Cement kiln co-processing contaminated soil mixed material and preparation method and application thereof |
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| KR980009163A (en) * | 1996-07-18 | 1998-04-30 | 임남웅 | Cement mortar mixed with industrial by-products and waste concrete Concrete using recycled aggregate |
| JPH10114555A (en) * | 1996-10-09 | 1998-05-06 | Chichibu Onoda Cement Corp | Low-heat hydraulic material and its production |
| JP2001354467A (en) * | 2000-06-07 | 2001-12-25 | Nannou Concrete Kogyo Kk | Recycled concrete |
| KR100341020B1 (en) * | 2001-03-23 | 2002-06-21 | 박승범 | Manufacturing Methods of Water Purification Concrete Utilizing Industrial By-Products |
| KR100379697B1 (en) * | 2002-05-06 | 2003-04-08 | Sang Gyun Oh | Process for producing recycled cement |
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| KR980009163A (en) * | 1996-07-18 | 1998-04-30 | 임남웅 | Cement mortar mixed with industrial by-products and waste concrete Concrete using recycled aggregate |
| JPH10114555A (en) * | 1996-10-09 | 1998-05-06 | Chichibu Onoda Cement Corp | Low-heat hydraulic material and its production |
| JP2001354467A (en) * | 2000-06-07 | 2001-12-25 | Nannou Concrete Kogyo Kk | Recycled concrete |
| KR100341020B1 (en) * | 2001-03-23 | 2002-06-21 | 박승범 | Manufacturing Methods of Water Purification Concrete Utilizing Industrial By-Products |
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