DOI QR코드

DOI QR Code

Characterization of Recycled Coarse Aggregate (RCA) via a Surface Coating Method

  • Ryou, J.S. (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Lee, Y.S. (Department of Civil and Environmental Engineering, Hanyang University)
  • Received : 2013.03.05
  • Accepted : 2014.01.01
  • Published : 2014.06.30

Abstract

Recycled coarse aggregate (RCA) made from waste concrete is not a suitable structural material as it has high absorption of cement mortar, which adheres on the aggregate surface and on the tiny cracks thereon. Therefore, when using RCA made from waste concrete, much water must be added with the concrete, and slump loss occurs when transporting. Hence, its workability is significantly worse than that of other materials. In this study, surface of RCA was coated with water-soluble polycarboxylate (PC) dispersant so that its characteristics improved. Each possibility was evaluated: whether its slump loss can be controlled, by measuring its workability based on the elapsed time; and whether it can be used as a structural material, by measuring its strength. Moreover, the carbonation due to cement mortar adhesion was measured through a carbonation test. As a result, RCA coated with PC dispersant was found to be better than crushed coarse aggregate and RCA when the physical properties of the fresh concrete and the mechanical, durability of the hardened concrete were tested.

Keywords

References

  1. Eguchi, K., Teranishi, K., Nakagome, A., Kishimoto, H., Shinozaki, K., & Narikawa, M. (2007). Application of recycled coarse aggregate by mixture to concrete construction. Construction and Building Materials, 21, 1542-1551. https://doi.org/10.1016/j.conbuildmat.2005.12.023
  2. Fong, W. F. K., Jaime, Y. S. K., & Poon C. S. (2002). Experience of using recycled aggregates from construction and demolition materials in ready mix concrete. International Workshop on Sustainable Development and Concrete Technology (pp. 267-275).
  3. Hendriks, C. F., Pietersen. H. S., & Fraay, A. F. A. (2000). Recycling of building and demolition waste, an integrated approach. In Proceedings of the International Symposium on 'Sustainable Construction: Use of Recycled Concrete Aggregate, London, UK (pp. 419-431).
  4. Katz, A. (2003). Properties of concrete made with recycled aggregate from partially hydrated old concrete. Cement and Concrete Research, 33, 703-711. https://doi.org/10.1016/S0008-8846(02)01033-5
  5. Khalil, S. M., & Word, M. A. (1980). Effect of sulfate content of cement on slump loss of concrete containing high-range water reducers (superplasticizers). Magazine of Concrete Research, 32, 28-38. https://doi.org/10.1680/macr.1980.32.110.28
  6. Kim, N. W., Lee, S. N., Kang, S. H., & Bae, J. S. (2005). A study on the mechanical properties of concrete using the recycled aggregate by surface coating. Journal of KSCE, 25(2), 387-393.
  7. Levy, S. M., & Helene, P. (2004). Durability of recycled aggregates concrete: A safeway to sustainable development. Cement and Concrete Research, 34(11), 175-180. https://doi.org/10.1016/S0008-8846(03)00395-8
  8. Li, J., Xiao, H., & Zhou, Y. (2009). Influence of coating recycled aggregate surface with pozzolanic powder on properties of recycled aggregate concrete. Construction and Building Materials, 23, 1287-1291. https://doi.org/10.1016/j.conbuildmat.2008.07.019
  9. Mindess, S., Young, J. F., & Darwin, D. (2003). Concrete (pp. 121-163). Upper Saddle River, NJ, USA: Prentice Hall.
  10. Oikonomou, N. D. (2004). Recycled concrete aggregates. Cement and Concrete Composites, 1-4.
  11. Park, C., & Sim, J. (2006). Fundamental properties of concrete using recycled concrete aggregate produced through advanced recycling process. In Proceedings of 85th TRB Annual Meeting. Washington DC, USA.
  12. Rahal, K. (2007). Mechanical properties of concrete with recycled coarse aggregate. Building and Environment, 42, 407-415. https://doi.org/10.1016/j.buildenv.2005.07.033
  13. Ramachandran, V. S. (1995). Concrete admixtures handbook: Properties, science, and technology (pp. 410-506). Park Ridge, NJ, USA: Noyes Publications.
  14. Rao, A., Jha, K. N., & Misra, S. (2007). Use of aggregates from recycled construction and demolition waste in concrete. Resources, Conservation and Recycling, 50, 81-91.
  15. Ryu, J. S. (2002). An experimental study on the effect of recycled aggregate on concrete properties. Magazine of Concrete Research, 54(1), 7-12. https://doi.org/10.1680/macr.2002.54.1.7
  16. Sim, J. S., & Park, C. W. (2011). Compressive strength and resistance to chloride ion penetration and carbonation of recycled aggregate concrete with varying amount of fly ash and fine recycled aggregate. Waste Management, 31, 2352-2360. https://doi.org/10.1016/j.wasman.2011.06.014
  17. Symonds. (1999). Construction and demolition waste management practices and their economics impacts. Report to DGXI, European Commission.
  18. Tabsh, S. W., & Abdelfatah, S. A. (2009a). Influence of recycled concrete aggregates on strength properties of concrete. Construction and Building Materials, 23(2), 1163-1167. https://doi.org/10.1016/j.conbuildmat.2008.06.007
  19. Tabsh, S. W., & Abdelfatah, A. S. (2009b). Influence of recycled concrete aggregates on strength properties of concrete. Construction and Building Materials, 23, 1163-1167. https://doi.org/10.1016/j.conbuildmat.2008.06.007
  20. Yamada, K., Ogawa, S., & Hanehara, S. (2001). Controlling of the adsorption and dispersing force of polycarboxylate-type superplasticizer by sulfate ion concentration in aqueous phase. Cement and Concrete Research, 31, 375-383. https://doi.org/10.1016/S0008-8846(00)00503-2
  21. Yang, K. H., Sim, J. I., Lee, J. S., & Chung, H. S. (2006). Application of powdered superplasticizer to improve of slump loss late in recycled aggregate concrete. Journal of the Korea Concrete Institute, 18(5), 649-656 (in Korean). https://doi.org/10.4334/JKCI.2006.18.5.649

Cited by

  1. Strength and Durability Evaluation of Recycled Aggregate Concrete vol.9, pp.2, 2014, https://doi.org/10.1007/s40069-015-0100-0
  2. Experimental Study on Tensile Creep of Coarse Recycled Aggregate Concrete vol.9, pp.3, 2014, https://doi.org/10.1007/s40069-015-0105-8
  3. Evaluation of the Influence of Specific Surface Treatments of RBA on a Set of Properties of Concrete vol.9, pp.3, 2014, https://doi.org/10.3390/ma9030156
  4. Effect of Surface Modifications of Recycled Concrete Aggregate on Concrete Properties vol.8, pp.1, 2014, https://doi.org/10.3390/buildings8010002
  5. The effect of mixing method on capillary moisture content of concretes with recycled concrete aggregates vol.385, pp.None, 2018, https://doi.org/10.1088/1757-899x/385/1/012049
  6. The Influence of Discharge Time, Kind of Additive, and Kind of Aggregate on the Properties of Three-Stage Mixed Concrete vol.10, pp.11, 2014, https://doi.org/10.3390/su10113862
  7. Evaluation on the Surface Modification of Recycled Fine Aggregates in Aqueous H2SiF6 Solution vol.12, pp.1, 2014, https://doi.org/10.1186/s40069-018-0256-5
  8. Experimental Characterization of Recycled Aggregate Concrete vol.303, pp.None, 2019, https://doi.org/10.1051/matecconf/201930305004
  9. Fibre reinforced concrete with recycled concrete aggregate - inverse design approach vol.596, pp.None, 2019, https://doi.org/10.1088/1757-899x/596/1/012002
  10. Mechanical Behavior of Recycled Fine Aggregate Concrete with High Slump Property in Normal- and High-Strength vol.13, pp.1, 2014, https://doi.org/10.1186/s40069-019-0372-x
  11. Recycled Concrete Aggregate for Medium-Quality Structural Concrete vol.14, pp.16, 2014, https://doi.org/10.3390/ma14164612
  12. A importância da segregação do agregado reciclado na resistência e na durabilidade do concreto estrutural vol.21, pp.3, 2021, https://doi.org/10.1590/s1678-86212021000300545