나노버블수를 활용한 시멘트 복합체의 작업성 증진에 대한 실험적 연구
Experimental Study on the Improvement of Workability of Cementitious Composites Using Nano-bubble Water
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초록
본 연구는 시멘트계 건설재료의 작업성 증진을 위하여 나노버블수의 사용을 시도하였다. 사용된 나노버블수는 약 750 nm의 입경을 지닌 나노버블이 7% 포함된 배합수를 사용하였다. 초고성능콘크리트, 경량시멘트 복합체, 고강도 모르타르 등 다양한 시멘트 복합체에 나노버블수가 배합수로서 사용될 때 미치는 영향을 실험하였다. 작업성을 대표할 수 있는 플로우 값이 시편에 따라 3-22%정도 증진됨을 확인하였다. 하지만 압축강도에는 큰 영향을 미치지 않는 것으로 확인되었다. 따라서 재료의 굳은 성질에 큰 영향 없이 시멘트 복합체의 작업성을 증진시킬 수 있는 새로운 방법으로 나노버블수의 사용이 다양한 시멘트 복합체에 활용될 수 있음을 제시하였다.
Abstract
This study was conducted to improve the workability of cementitious composites using nano-bubble water. The used nano-bubble water contains 7% of nano-sized bubbles with an averaged bubble size of 750 nm. Various different types of cementitious composites including ultar-high performance concrete, lightweight cementitious composites, and high-strength mortar have been tested to identify the changes of material properties. From the use of nano-bubble water, it was confirmed that workability has been improved by 3-22%. On the other hand, other material characteristics such as compressive strength did not have noticeable changes. Therefore, it was proposed that the use of nano-bubble water can enhance workability of cementitious composites without having significant impact on other material properties.
참고문헌 (24)
- Kang, S. -H., "Importance of drying to control internal curing effects on field casting ultra-high performance concrete", Cement and Concrete Research, 108, pp.20~30 (2018)
- Lee, N., "Heat-Induced Acceleration of Pozzolanic Reaction Under Restrained Conditions and Consequent Structural Modification", Materials, 13(13), pp.2950~ (2020)
- Chiocchio, G., "Optimum time for adding superplasticizer to Portland cement pastes", Cement and Concrete Research, 15(5), pp.901~908 (1985)
- "Korea Structural Concrete Design Code 2012", Korea Concrete Institute, ~ (2012)
- Ferraro, Gianluca, "A Henry’s law method for generating bulk nanobubbles", Nanoscale, 12(29), pp.15869~15879 (2020)
- Takahashi, M., "Free-radical generation from collapsing microbubbles in the absence of a dynamic stimulus", The Journal of Physical Chemistry B, 111(6), pp.1343~1347 (2007)
- Agarwal, A., "Principle and applications of microbubble and nanobubble technology for water treatment", Chemosphere, 84(9), pp.1175~1180 (2011)
- Park, J. -S., "Application of microbubbles to hydroponics solution promotes lettuce growth", HortTechnology, 19(1), pp.212~215 (2009)
- Han, J.-G, "Experimental study of compressive strength of Ash-Mortar", Proceedings of Korean Society of Civil Engineers Annual Conference, pp.83~84 (2015)
- Cha, H. -S., "New Technology-Application of Microbubble Technology in Foods", Bulletin of Food Technology, 24(3), pp.410~414 (2011)
- Song, H. -J., "A study on existence and lifespan of O nano-bubbles in water", Proceedings of the Korean Society of Precision Engineering Conference, pp.453~454 (2013)
- Kim, T. -I, "Analysis of Bubble Potential Energy and its Application to Disinfection and Oil Washing", pp.2010
- Kim, H. -J., "A Study on the Development of Sub-micron Bubble Generator and Characterization of Sub-micron Bubble", pp.2014
- Kim, E., "Substantial enhancement of dissolved gas concentration in the presence of ultrafine bubble", pp.2018
- 김상범, "High Rate DAF를 위한 플록형성공정의 설계와 기포발생시스템의 운전조건 결정", 한국수처리학회지, 25(5), pp.67~75 (2017), 한국수처리학회[DOI]
- Sangbeom Kim, "Generation of sub-micron (nano) bubbles and characterization of their fundamental properties", Environmental Engineering Research, 24(3), pp.382~388 (2019), 대한환경공학회[DOI]
- "Materials, A.S.o.T. Standard test method for compressive strength of hydraulic cement mortars, ASTM C-109", American Society of Testing Materials, ~ (2016)
- Kim, T. -I., "Development of Optimum flocculation process in DAF process", Journal of Korean Society on Water Environment(2005~), 3, pp.7~44 (2007)
- Fan, M., "Nanobubble generation and its application in froth flotation(part I) : Nanobubble generation and its effects on properties of microbubble and millimeter scale bubble solutions", Mining Science and Technology(China), 20(1), pp.1~19 (2010)
- Kim, W. -K., "Effect of Hydrogen Nanobubbles on the Mechanical Strength and Watertightness of Cement Mixtures", Materials, 14(8), pp.1823~ (2021)
- Endo-Takahashi, Yoko, "Microbubbles and nanobubbles with ultrasound for systemic gene delivery", Pharmaceutics, 12(10), pp.964~ (2020)
- Asadollahfardi, G., "The effects of using metakaolin and micro-nanobubble water on concrete properties", Journal of Building Engineering, 25, pp.100781~ (2019)
- Maruyama, T., "Effect on the Flow Properties of the Mortar Using Micro-Nano Bubbles", Advanced Materials Research (2015)
- Grzegorczyk-Frańczak, Hunek. D. B., "Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases", Materials, 14(8), pp.1902~ (2021)