Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
권호 표지
DOI QR코드

DOI QR Code

An Experimental Study on the Quality of Mortar Mixed with Tapioca Starch

타피오카 전분을 혼합한 모르타르의 품질에 관한 실험적 연구

  • Yong Jic Kim (Department of Environment and Energy Engineering, Daejin University)
  • 김용직 (대진대학교 스마트건설.환경공학부)
  • Received : 2023.09.05
  • Accepted : 2023.09.15
  • Published : 2023.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, mortar mixed with tapioca starch was manufactured to evaluate the effect of tapioca starch on mortar, through evaluating the quality characteristics of mortar, the impact of tapioca starch on improving the performance and basic quality of mortar was examined. Tapioca starch tended to decrease flow by increasing the viscosity of the dough consistency of fresh mortar, which tended to reduce flow, and decreased by about 10 % as the tapioca starch mixing ratio increased by 0.025 %. In addition, the effect of tapioca starch on the compressive strength of mortar was at the same level regardless of the tapioca starch mixture at 28 days of age. However, at an early age of 3 days, the speed of compressive strength development was accelerated by mix ing tapioca starch. In addition, the effect of tapioca starch on the compressive strength of mortar was at the same level regardless of the tapioca starch mixture at 28 days of age. However, at an early age of 3 days, the speed of compressive strength development was accelerated by mixing tapioca starch. The speed of strength development improved by about 20 % when mixing 0.050 % tapioca starch. The adhesion strength improved by about 60 % when mixing 0.050 % tapioca starch, and the final shrinkage in length change decreased by 5 %.

본 논문에서는 타피오카 전분이 모르타르에 미치는 영향을 평가하기 위하여 타피오카 전분을 혼합한 모르타르를 제조하였으며, 모르타르의 품질특성 평가를 통하여 타피오카 전분이 모르타르의 성능개선 및 기초품질 향상에 미치는 영향을 검토하였다. 타피오카 전분은 모르타르에 혼합할 경우 굳지않은 모르타르의 반죽질기의 점성을 증가시켜 플로우가 감소하는 경향이 있었으며, 타피오카 전분 혼합율 0.025 % 증가에 따라 약 10 % 감소하였다. 또한 타피오카 전분이 모르타르의 압축강도에 미치는 영향은 재령 28일의 경우 타피오카 전분 혼합에 관계없이 동등 수준으로 나타났지만 재령 3일의 초기재령에서는 타피오카 전분 혼합에 따라 강도발현 속도가 촉진되는 것으로 나타났으며, 타피오카 전분 혼합율 0.050 % 혼합할 경우 약 20 %의 최대 초기재령 압축강도 발현이 나타났다. 부착강도는 타피오카 전분 혼합율 0.050 % 혼합할 경우 부착강도가 약 60 % 향상되었으며, 길이변화는 최종 수축량이 5 % 감소하는 것으로 나타났다.

Keywords

References

  1. Akindahunsi, A.A. (2019). Investigation into the use of extracted starch from cassava and maize as admixture on the creep of concrete, Construction and Building Materials, 214, 659-667. https://doi.org/10.1016/j.conbuildmat.2019.04.110
  2. Akindahunsi, A.A. (2018). Insight into the hydration and microstructural properties of extracted starch from cassava and maize on cement and concrete, Acta Technica Napocensis: Civil Engineering & Architecture, 61(1), 91-119.
  3. Akindahunsi, A.A., Uzoegbo, H.C. (2015a). Starch modified concretes exposed to aggressive acidic environment, Journal of Scientific Advances Journal of Civil and Construction Engineering, 1(1), 41-58.
  4. Akindahunsi, A.A., Uzoegbo, H.C. (2015b). Strength and durability properties of concrete with starch admixture, International Journal of Concrete Structures and Materials, 9(3), 323-335. https://doi.org/10.1007/s40069-015-0103-x
  5. Akindahunsi, A.A., Uzoegbo, H.C., Iyuke, S.E. (2012). Use of starch modified concrete as a repair material, Proceedings of the 3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting.
  6. Akindahunsi, A.A., Schmidt, W. (2019). Effect of cassava starch on shrinkage characteristics of concrete, African Journal of Science, Technology, Innovation and Development, 11(4), 441-447. https://doi.org/10.1080/20421338.2017.1380580
  7. Abalaka, A.E. (2011). Comparative effects of cassava starch and simple sugar in cement mortar and concrete, ATBU Journal of Environmental Technology, 4(1), 13-22.
  8. Elah, O.B., Ibn Sa'id, A.D. (2014). The use of cassava starch in earth burnt bricks, International Journal of Engineering Trends and Technology, 17(8), 369-372. https://doi.org/10.14445/22315381/IJETT-V17P274
  9. Jung, J.E., Yang, K.H., Go, J.W., Yun, I.G. (2014). A fundamental study for development of corrosion inhibitor repair mortar, Journal of the Korean Recycled Construction Resources Institute, 2(2), 93-99 [in Korean]. https://doi.org/10.14190/JRCR.2014.2.2.093
  10. Joseph, S.K., Xavier, A. (2016). Effect of starch admixtures on fresh and hardened properties of concrete, International Journal of Scientific Engineering and Research, 4(3), 27-30.
  11. Jeon, S.M., Kim, H.K. (2021). Basic properties and dimension stability of ultra rapid setting cement mortar containing low-quality recycled aggregate, Journal of the Korean Recycled Construction Resources Institute, 9(3), 246-252 [in Korean].
  12. Kim, E.H., Lee, B.J., Lee, S.M., Kim, Y.Y. (2022). Durability properties of ultra rapid hardening mortar produced with alumina-based binder for repairing sewage treatment pipes, Journal of the Korean Recycled Construction Institute, 10(4), 482-488 [in Korean].
  13. Korea Institute for Structural Maintenance and Inspection (2016). Sustainable Repair and Reinforcement Technology for Concrete Structures, Kimoondang, Seoul.
  14. KS F 4042 (2022). Polymer Modified Cement Mortar for Maintenance in Concrete Structure, Korea Standards & Certification.
  15. Molenda, M., Stasiak, M., Horabik, J., Fornal, J., Blaszczak, W., Ornowski, A. (2006). Microstructure and mechanical parameters of five types of starch, Polish Journal of Food and Nutrition Sciences, 15/56(2), 161-168
  16. Okafor, F.O. (2008). The potentials of cassava flour as a set-retarding admixture in concrete, Nigerian Journal of Technology, 27(1), 5-11.
  17. Otoko, G.R. (2014). Minimising hot weather effects on fresh and hardened concrete by use of cassava powder as admixture, European International Journal of Science and Technology, 3(2), 1-8.
  18. Swinkels, J.J.M. (1985). Composition and properties of commercial native starches, Starch-StSrke, 37(1), 1-5. https://doi.org/10.1002/star.19850370102
  19. Wanishlamlert, C., Julnipitawong, P., Tangtermsirikul, S. (2017). Effect of tapioca strach on properties of self-compacting concrete, Journal of Thailand Concrete Association, 5(2), 19-28.