KR100814148B1 - Concrete composition - Google Patents
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- KR100814148B1 KR100814148B1 KR1020070010502A KR20070010502A KR100814148B1 KR 100814148 B1 KR100814148 B1 KR 100814148B1 KR 1020070010502 A KR1020070010502 A KR 1020070010502A KR 20070010502 A KR20070010502 A KR 20070010502A KR 100814148 B1 KR100814148 B1 KR 100814148B1
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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
- 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
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
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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
- 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
- C04B14/06—Quartz; Sand
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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
- C04B28/08—Slag cements
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은 콘크리트 조성물에 관한 것으로, 더 상세하게는 콘크리트의 유동성을 높이기 위한 콘크리트 조성물에 관한 것이다. The present invention relates to a concrete composition, and more particularly to a concrete composition for increasing the fluidity of the concrete.
일반적으로 콘크리트 조성물은 시멘트와 물 그리고 필요에 따라 공기연행제, 감수제 등을 혼합하여 자갈이나 모래와 같은 물질을 결집시키고, 이 혼합물을 교반함로써 만들어진다. 콘크리트 구조물, 특히 복잡한 구조를 가진 구조물을 건축하기 위하여서는 교반하여 얻어진 콘크리트 조성물을 구조물의 각 부위에 유입될 수 있도록 진동기를 사용하고 있다. In general, the concrete composition is made by mixing cement and water and, if necessary, an air entrainer, a water reducing agent to aggregate materials such as gravel or sand, and stirring the mixture. In order to build a concrete structure, especially a structure having a complex structure, a vibrator is used to introduce the concrete composition obtained by stirring into each part of the structure.
이러한 점을 감안하여 작업성을 개선하기 위해서는 콘크리트 단위 용적당 물함량을 증가시키거나 또는 감수제를 혼합하여 상대적으로 유동성이 큰 콘크리트를 제조하고 있다. In consideration of this, in order to improve workability, relatively high flow concrete is manufactured by increasing water content per unit of concrete or mixing a reducing agent.
그러나 상기와 같이 콘크리트 조성물의 유동성을 개선하는 경우에는, 재료분리(골재와 시멘트 호제의 분리 및/또는 골재의 경화)가 쉽게 일어나, 콘크리트 조성물로 만들어지는 구조물의 질, 예컨대 균질성이 손상되고 강도가 낮아지게 된다. However, in the case of improving the flowability of the concrete composition as described above, material separation (separation of aggregate and cement admixture and / or hardening of the aggregate) easily occurs, which impairs the quality of the structure made of the concrete composition, such as homogeneity and strength. Will be lowered.
따라서 품질과 내구성이 높은 콘크리트 구조물을 만들 수 있는 콘크리트 조성물의 개발은 절실히 요구되어 왔으며, 유동성과 내 재료분리성이 균형을 이루고 진동에 의한 압밀 없이도 유입이 잘 행해질 수 있는 콘크리트 조성물이 연구되고 있다. Therefore, the development of a concrete composition that can make a concrete structure with high quality and durability has been urgently required, and the concrete composition that can be flowed well without consolidation by vibration and balance of fluidity and material segregation resistance is being studied.
대한민국 특허 등록 제 0510875호에는 고유동 콘크리트 제조를 위한 시멘트 혼합재 조성물이 개시되어 있다. 개시된 혼합재 조성물은 열병합 발전소 애쉬 40 내지 59 중량%, 4000 내지 5000㎠/g 의 분말도를 가지는 석회석 분말 40 내지 59 중량%, 분말형 고성능 감수제 0.3 내지 1 중량 %를 포함한다. 이러한 콘크리트 조성물은 열병합 발전소 애쉬의 수급이 원활하지 않다. Republic of Korea Patent Registration No. 0510875 discloses a cement mixture composition for producing high flow concrete. The disclosed mixture composition comprises 40 to 59 wt% of cogeneration plant ash, 40 to 59 wt% of limestone powder with a powder degree of 4000 to 5000 cm 2 / g, and 0.3 to 1 wt% of powdered high performance water reducing agent. This concrete composition is not smooth supply and demand of cogeneration plant ash.
일본 특허공개 제 45544호에 콘크리트 조성물이 개시되어 있다. 이 콘크리트 조성물은 셀룰로오스 또는 아크릴형의 점도 개선제 및 고성능 감수제를 함유하고 45 내지 80㎝의 슬럼프 유동치를 가져 높은 유동성 및 내재료 분리성을 가진다. 점도 개선제는 콘크리트 조성물에 공기의 함량을 증가시켜 유동성을 증가시킬 수 있으나 공기의 함량을 조정하기 어렵다. Japanese Patent Laid-Open No. 45544 discloses a concrete composition. This concrete composition contains a cellulose or acrylic type viscosity improving agent and a high performance water reducing agent and has a slump flow of 45 to 80 cm to have high fluidity and material segregation resistance. Viscosity modifiers can increase the fluidity by increasing the content of air in the concrete composition, but it is difficult to adjust the content of air.
그리고 특허등록 제 0196096호에는 콘크리트 조성물(concrete composition)이 개시되어 있으며, 특허등록 제 0474976호에는 고강도 콘크리트 조성물의 제조방법이 개시되어 있다. In addition, Patent Registration No. 0196096 discloses a concrete composition, and Patent Registration No. 0474976 discloses a method for preparing a high strength concrete composition.
본 발명은 상술한 바와 같은 문제점을 해결하기 위한 것으로, 유동성을 향상시켜 구조물의 시공에 따른 작업성을 높일 수 있으며, 압축강도와 내구성이 향상된 콘크리트 조성물을 제공함에 그 목적이 있다. The present invention is to solve the problems as described above, it is possible to improve the workability according to the construction of the structure by improving the fluidity, and its object is to provide a concrete composition with improved compressive strength and durability.
상기와 같은 목적을 달성하기 위한 본 발명의 콘크리트 조성물은 물, 시멘트, 모래, 자갈. 혼화제가 포함되어 배합된 콘크리트 조성물에 있어서,Concrete composition of the present invention for achieving the above object is water, cement, sand, gravel. In the concrete composition blended with a admixture,
상기 시멘트 100 기준 중량부에 대해 탄산칼슘 5 내지 50 중량부, 상기 혼화제 0.5 내지 1.5 중량부 포함하여 된 것을 그 특징으로 한다. 5 to 50 parts by weight of calcium carbonate and 0.5 to 1.5 parts by weight of the admixture are included based on 100 parts by weight of the cement.
본 발명에 있어서, 상기 시멘트는 고로 슬래그 시맨트를 사용함이 바람직하며, 상기 혼화제는 KF-120NP(AE 감수제 표준형)을 사용함이 바람직하다.In the present invention, the cement is preferably using blast furnace slag cement, the admixture is preferably used KF-120NP (AE water reducing agent standard).
대안으로 상기 목적을 달성하기 위한 본 발명에 따른 콘크리트 조성물은 물, 시멘트, 모래, 자갈. 혼화제가 포함되어 배합된 콘크리트 조성물에 있어서,Alternatively, the concrete composition according to the present invention for achieving the above object is water, cement, sand, gravel. In the concrete composition blended with a admixture,
상기 시멘트 100 기준중량부에 대해 물 59중량부, 탄산칼숨 17 내지 19 중량부, 모래 301 중량부, 자갈 336 중량부, 혼화제 0.5 내지 1.5 중량부를 포함하여 된 것을 그 특징으로 한다.59 parts by weight of water, 17 to 19 parts by weight of carbon carbonate, 301 parts by weight of sand, 336 parts by weight of gravel, and 0.5 to 1.5 parts by weight of admixture based on 100 parts by weight of the cement.
이하 첨부된 도면을 참조하여 본 발명에 따른 한 바람직한 실시예를 상세하게 설명하며 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 콘크리트 조성물은 콘크리트의 압축강도를 떨어뜨리지 않으면서 믹싱 된 콘크리트의 유동성을 향상시킨 조성을 갖는다.The concrete composition according to the present invention has a composition that improves the fluidity of the mixed concrete without lowering the compressive strength of the concrete.
이러한 콘크리트 조성물은 시멘트와, 물, 자갈, 모래, 혼화제(수화촉진 첨가재)와 탄산칼슘이 배합된 기술적 구성을 가진다. 상기 탄산칼슘은 시멘트 100 기준중량부(%)로 할 때 5 내지 50 중량부가 배합되고, 상기 혼화제는 시멘트 100 기준중량부(%)로 할 때 0.5 내지 1.5 중량부가 배합된다. This concrete composition has a technical composition of cement, water, gravel, sand, admixture (hydration accelerator additive) and calcium carbonate. The calcium carbonate is blended 5 to 50 parts by weight based on 100% by weight of cement, and the admixture is 0.5 to 1.5 parts by weight based on 100% by weight of cement.
여기에서 상기 시멘트는 고로 슬래그 시멘트를 사용함이 바람직하고, 혼화제는 KF-120NP(AE 감수제 표준형, 강도 증진성 강화 타입)을 사용함이 바람직한데, 상기 시멘트와 혼화제는 이 실시예에 의해 한정되지 않는다.Herein, the cement is preferably blast furnace slag cement, and the admixture is preferably KF-120NP (AE water reducing agent standard, strength enhancing reinforcement type), but the cement and admixture are not limited by this embodiment.
상기와 같이 구성된 콘크리트 조성물은 탄산칼슘과 혼화제를 사용함으로써 콘크리트의 유동성을 향상시킬 수 있었다. 탄산칼슘을 5 중량부 이하로 첨가한 경우 유동성이 떨어지고 50 중량부 이상 혼합한 경우 유동성은 크게 향상되었으나 콘크리트의 강도가 떨어졌다. 이와 연계하여 상기 혼화제를 0.5 중량부 이하로 배합하는 경우 콘크리트의 강도가 기존에 비하여 상대적으로 저하되고, 1.5 중량부 이상을 혼합하는 경우 콘크리트의 경화가 지연되는 경향이 있음을 알 수 있었다. The concrete composition configured as described above could improve the fluidity of the concrete by using a calcium carbonate and admixture. When calcium carbonate was added in an amount of 5 parts by weight or less, the fluidity was inferior, and when 50 parts by weight or more were mixed, the fluidity was greatly improved, but the strength of concrete was decreased. In connection with this, when the admixture was blended at 0.5 parts by weight or less, the strength of the concrete was relatively lower than that of the conventional one, and when mixing more than 1.5 parts by weight, it was found that the curing of the concrete tended to be delayed.
이하, 본 발명의 콘크리트 배합에 따른 실험들을 통하여 본 발명의 콘크리트 조성물의 작용을 설명하지만 본 발명의 권리범위는 이들 실시예에 의해서 한정되는 것은 아니다.Hereinafter, the operation of the concrete composition of the present invention through the experiments according to the concrete formulation of the present invention, but the scope of the present invention is not limited by these examples.
실시예 1Example 1
본 발명에 따른 콘크리트 조성물을 배합함에 있어서, 이 콘크리트 조성물 고로 슬래그 시멘트 100중량부(207kg/㎥)를 기준 중량부로 하고, 이 기준 중량부에 대해 물 62중량부(188kg/㎥), 모래 300 중량부(812kg/㎥), 자갈 335 중량부, 혼화제 0.5 중량부, 탄산칼슘 4 중량부를 배합하였다. 이 실시에 있어서, 함량계산에 따른 혼화제를 제외한 세멘트, 물, 소수점 이하는 숫자는 버렸으며, 모래는 0.074~5mm인 것을 사용하고 자갈은 5 ~ 50mm인 것을 사용하였다. In blending the concrete composition according to the present invention, 100 parts by weight (207 kg / m 3) of the blast furnace slag cement is used as a reference part, and 62 parts by weight (188 kg / m 3) of water and 300 parts by weight of sand are based on this reference part. Part (812 kg / m 3), 335 parts by weight of gravel, 0.5 part by weight of admixture, and 4 parts by weight of calcium carbonate. In this example, the numbers of cement, water, and decimals except for admixtures according to the content calculation were discarded. Sand used was 0.074-5 mm and gravel 5-50 mm was used.
실시예 2 Example 2
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 0.5, 탄산칼슘을 5 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and the concrete composition was blended by mixing 0.5 parts by weight of these admixtures and 5 parts by weight of calcium carbonate.
실시예 3 Example 3
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 0.5, 탄산칼슘을 10 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and the concrete composition was blended with 0.5 and calcium carbonate, 10 parts by weight of these admixtures.
실시예 4 Example 4
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 1.0 탄산칼슘을 20 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and 20 parts by weight of 1.0 calcium carbonate was mixed with these to mix the concrete composition.
실시예 5 Example 5
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 0.5, 탄산칼슘을 30 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and the concrete composition was blended with 0.5 and calcium carbonate in admixture with these.
실시예 6 Example 6
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 0.5, 탄산칼슘을 40 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and the concrete composition was blended with 0.5 and calcium carbonate in admixture with these.
실시예 7 Example 7
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 1.5 탄산칼슘을 50 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and 50 parts by weight of 1.5 calcium carbonate as a mixed admixture with these were mixed to mix the concrete composition.
실시예 8 Example 8
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 1.5 탄산칼슘을 60 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and the concrete composition was blended by mixing 60 parts by weight of 1.5 calcium carbonate as a admixture therewith.
실시예 9 Example 9
시멘트, 모래, 자갈, 물의 배합율은 상기 실시예 1과 동일하며, 이들과 혼화제를 2.0 탄산칼슘을 50 중량부를 배합하여 콘크리트 조성물을 배합하였다.The mixing ratio of cement, sand, gravel, and water was the same as in Example 1, and 50 wt. Parts of 2.0 calcium carbonate was mixed with these to mix the concrete composition.
실시예 10 Example 10
본 발명에 따른 콘크리트 조성물을 배합함에 있어서, 이 콘크리트 조성물 고로 슬래그 시멘트 100중량부(303kg/㎥)를 기준 중량부로 하고, 이 기준중량부에 대해 물 59중량부(188kg/㎥), 모래 258중량부(784kg/㎥), 자갈 294중량부(891) 중량부, 혼화제 1.0 중량부, 탄산칼슘 50중량부를 배합하였다. In blending the concrete composition according to the present invention, 100 parts by weight of the blast furnace slag cement (303 kg / m 3) is used as a reference part, and 59 parts by weight of water (188 kg / m 3) and sand 258 weight based on this reference part. Part (784 kg / m 3), 294 parts by weight (891) parts of gravel, 1.0 part by weight of admixture, and 50 parts by weight of calcium carbonate were blended.
비교예 1 Comparative Example 1
이 비교예에 있어서는 기존의 콘크리트 조성물을 이용하였다. 이 콘크리트 조성물을 배합함에 있어서, 이 콘크리트 조성물 고로 슬래그 시멘트 100중량부(207kg/㎥)를 기준 중량부로 하고, 이 기준중량부에 대해 물 62중량부(188kg/㎥), 모래 300 중량부(812kg/㎥), 자갈 335 중량부를 배합하였다. In this comparative example, the existing concrete composition was used. In mix | blending this concrete composition, 100 weight part (207 kg / m <3>) of this concrete composition blast furnace slag cement shall be used as a reference weight part, and 62 weight part (188 kg / m <3>) of water and 300 weight part (812 kg) of sand with respect to this reference weight part. / M 3), 335 parts by weight of gravel.
비교예 2 Comparative Example 2
이 비교예의 콘크리트 조성물은 고로 슬래그 시멘트 100중량부(303kg/㎥)를 기준 중량부로 하고, 이 기준중량부에 대해 물 59중량부(188kg/㎥), 모래 258중량부(784kg/㎥), 자갈 294중량부(891) 중량부, 혼화제 1.0 중량부, 탄산칼슘 50중량부를 배합하였다. The concrete composition of this comparative example is based on 100 parts by weight of blast furnace slag cement (303kg / ㎥), and 59 parts by weight (188kg / ㎥), sand 258 parts (784kg / ㎥), gravel 294 weight part 891 weight part, 1.0 weight part of admixtures, and 50 weight part of calcium carbonate were mix | blended.
상기 실시예들의 슬럼프(%), 공기량(%), 진동기를 이용한 유동(cm), 시간의 경과에 따른 압축강도를 실험하여 하기 표 1에 실험결과를 얻었다. The slump (%), the air amount (%) of the above examples, the flow (cm) using a vibrator, the compressive strength over time was tested to obtain the test results in Table 1 below.
표 1로부터 알 수 있는 바와 같이 콘크리트 배합 시, 탄산칼슘 5중량부 이하로 혼합하는 경우 유동성에 큰 변화가 없고, 작업성이 상대적으로 떨어지는 것을 알 수 있으며, 탄산칼슘의 함량의 60 중량부 이상인 경우 유동성은 증가됨으로 알 수 있으나 상대적으로 콘크리트의 강도가 떨어지는 것을 알 수 있다. As can be seen from Table 1, when mixing the concrete at less than 5 parts by weight of calcium carbonate, there is no significant change in fluidity and workability is relatively low, and when the content of calcium carbonate is more than 60 parts by weight. It can be seen that the fluidity is increased, but the strength of the concrete is relatively low.
이상에서 설명한 바와 같이 본 발명에 따른 콘크리트 조성물은 탄산칼슘과 혼화제를 상기와 같이 적정량 혼합함으로써 유동성과 콘크리트의 강도를 높일 수 있으며, 작업성을 향상시킬 수 있다. As described above, the concrete composition according to the present invention may increase the strength of the fluidity and concrete by mixing calcium carbonate and admixture as described above in an appropriate amount, and improve workability.
본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 실시예가 가능하다는 점을 이해할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.
따라서 본 발명의 진정한 보호 범위는 첨부된 청구범위에 의해서만 정해져야 할 것이다. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101877317B1 (en) * | 2017-05-12 | 2018-07-11 | (주)노빌 | Low powder and high fluidity concrete composition |
| WO2018151526A1 (en) * | 2017-02-16 | 2018-08-23 | 한국지질자원연구원 | Method for preparing composite calcium carbonate through solubilization of carbon dioxide of coal ash from circulating fluidized bed power plant and composite calcium carbonate prepared thereby |
| KR102304911B1 (en) | 2021-01-13 | 2021-09-27 | (주)씨앤비 | Latex modified high performance concrete and pavement method using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100196096B1 (en) * | 1991-06-25 | 1999-06-15 | 츠지오카 아키히로 | Concrete composition |
| KR100474976B1 (en) * | 2001-10-23 | 2005-03-08 | 한일시멘트 (주) | The method for manufacturing of composition for height-intensity concrete |
| KR100510875B1 (en) * | 2003-03-28 | 2005-08-30 | 주식회사 금륜 | Cement admixture composite for high flowability concrete fabrication |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100196096B1 (en) * | 1991-06-25 | 1999-06-15 | 츠지오카 아키히로 | Concrete composition |
| KR100474976B1 (en) * | 2001-10-23 | 2005-03-08 | 한일시멘트 (주) | The method for manufacturing of composition for height-intensity concrete |
| KR100510875B1 (en) * | 2003-03-28 | 2005-08-30 | 주식회사 금륜 | Cement admixture composite for high flowability concrete fabrication |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018151526A1 (en) * | 2017-02-16 | 2018-08-23 | 한국지질자원연구원 | Method for preparing composite calcium carbonate through solubilization of carbon dioxide of coal ash from circulating fluidized bed power plant and composite calcium carbonate prepared thereby |
| KR101877317B1 (en) * | 2017-05-12 | 2018-07-11 | (주)노빌 | Low powder and high fluidity concrete composition |
| KR102304911B1 (en) | 2021-01-13 | 2021-09-27 | (주)씨앤비 | Latex modified high performance concrete and pavement method using the same |
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