Title:
Durability of Recycled Aggregate Concrete
Author(s):
Nariman J. Khalil and Georges Aouad
Publication:
Symposium Paper
Volume:
336
Issue:
Appears on pages(s):
91-100
Keywords:
recycled aggregates, durability, mechanical properties, absorption, sulfate attack
DOI:
10.14359/51722458
Date:
12/11/2019
Abstract:
The results of an experimental investigation into the mechanical properties and durability of recycled and natural coarse aggregates concrete are reported. A total of thirty-six specimens were tested. The percentages of replacement of coarse aggregates with recycled aggregates in the concrete mixes were 0%, 50%, and 100%. The source of recycled aggregates in this study was the concrete specimens tested in the laboratory. These specimens were crushed and then sieved into medium aggregates (4.75-9.5 mm) [0.19-0.37 in.] and coarse aggregates (9.5-19mm) [0.37-0.75 in.]. The replacement of fine aggregates was not considered in this study. The properties of concrete mixes containing natural aggregates as control mix and those containing Recycled Concrete Aggregates (RCAs) have been studied, including fresh properties, mechanical properties and durability. The influence of saturation state of RCA (dried or saturated) on the properties of concretes of identical compositions has first been studied. The theoretical amount of absorbed water is added at the beginning of mixing. Durability performance of hardened concrete made with recycled aggregates as partial or full replacement of natural coarse aggregates is reported. Resistance to pure water and sulfate attack is investigated. The results show that a replacement ratio of 50% does not have a significant effect on the performance of recycled aggregate concrete mixes. Moreover, the recycled aggregate concrete performs relatively satisfactorily under various conditions and has a comparable durability to natural aggregate concrete if properly designed.
Related References:
1. Hansen, T.C. recycling of demolished concrete and masonry. Taylor and Francis, Oxford shire, UK, (1992) 316.
2. ACI221R-96. Guide for use of normal weight and heavyweight aggregates in concrete. (Re approved 2001).
3. Katz, A. Properties of concrete made with recycled aggregate from partially hydrated old concrete. Cement and Concrete Research, (2003) 703-711.
4. Xiao, J., Li, J.B. and Zhang, C. On relationships between the mechanical properties of recycled aggregate concrete: An overview. Materials and Structures (2006) 39.655-664.
5. Etxeberria, M., Mari, A.R. and Vazquez, E. Recycled aggregate concrete as structural material. Materials and Structures, (2007) 40:529-541.
6. Gonzalez, B. and Martinez, F. Concrete with aggregates from demolition waste and silica fume. Materials and mechanical properties, Building and Environment, (2008) 429-437.
7. Florea, M. and Brouwers, H. The influence of crushing method on recycled concrete properties. Advances in Cement and Concrete Technology in Africa, (2009) 1041-1050.
8. M. Malesev, M., Radonjanin, V. and Marinkovie, S. Recycled concrete as aggregate for structural concrete production. Sustainability (2010), www.mdpi.com, 1204-1225.
9. Naguchi, T. Sustainable recycling of concrete structures. Indian Concrete Institute Journal, (2010) 41-53.
10. Husain, A. and Assas, M. Utilization of demolished concrete waste for new construction. World Academy of Science, Engineering and Technology, (2013) 69-74.
11. Belagraa, L. and Beddar, M. Study of the mechanical performance of a recycled aggregate concrete with admixture addition. Open Journal of Civil Engineering, http://www.scirp.org/journal/ojce, (2013).
12. Jeong, H. Processing and properties of recycled aggregate concrete. http://hdl.handle.net/2142/26156, 2011, (2014).
13. Cabral, A., Schalch, V., Dal Molin, D. and Ribeiro, J.L. Mechanical properties modelling of recycled aggregate concrete. Construction and Building Materials 24, ELSEVIER, (2010) 421-430.
14. McNeil K. and Kang T. H.-K. Recycled Concrete Aggregates: A Review. International Journal of Concrete Structures and Materials, Vol. 7, No. 1, (2013) 61-69.
15. Ulloa, V. A., Garcia-Taengua, E., Pelufo, M., Domingo, A., and Serna, P., 2013, “New views on effect of recycled aggregates on concrete compressive strength”, ACI Material Journal, V. 110, No. 6, 687-696.
16. Limbachiya, M., Meddah, M. S., and Ouchagour, Y., 2012, “Performance of Portland/silica fume cement concrete produced with recycled concrete aggregate”, ACI Material Journal, V. 109, No. 1, 91-100.
17. Seara-Paz, S., Corinaldesi, V., Gonzales-Fonteboa, B., and Martinez-Abella, F., 2016, “Influence of recycled coarse aggregates characteristics on mechanical properties of structural concrete”, European Journal of Environmental and Civil Engineering, 20:sup1, s123-s139, doi: 10.1080/19648189.2016.1246694
18. Salem, R. M., Burdette, E. G., and Jackson, N. M., 2003, “Resistance to freezing and thawing of recycled aggregate concrete”, ACI Material Journal, V. 100, No. 3, 216-220.
19. Faella, C., Lima, C., Martinelli, E., Pepe, M., and Realfonzo, R., 2015, “Strength and durability of sustainable concrete: an experimental study”, ACI, V. 305, SP-305-10. 10.1-10.10.
20. Khalil, N.J., Touma, A., Touma, T., and Daher, R., 2016 “A Study into the Relationships between the Mechanical Properties of Recycled Aggregate Concrete”, Proceedings of the Second International Conference on Concrete Sustainability”, E-Book ISBN 978-84-945077-8-6, pp 1146-1158, Madrid- Spain.
21. ASTM-C33, Standard Specification for Concrete Aggregates.
22. Surya, M., Kanta Rao V. V. L. and Lakshmy, P., 2015, “Mechanical, durability and time-dependent properties of recycled aggregate concrete with fly ash”, ACI Materials Journal, V. 112, No. 5, pp.653-660.
23. Yang, K., Chung, H. and Ashour, A., 2008, “Influence of type and replacement level of recycled aggregates on concrete properties”, ACI Material Journal, V. 105, No. 3, 289-296.
24. McNeil K. and Kang T. H.-K., 2013, “Recycled Concrete Aggregates: A Review”, International Journal of Concrete Structures and Materials, Vol. 7, No. 1, 61-69.
25. Li, X. 2008, “Recycling and reuse of waste concrete in china. Part I. Material behavior of recycled aggregate concrete, Resources, Conversation and Recycling”, 53, ELSEVIER, 36-44
26. Schmidt, T., Lothenbach, B., Romer, M., Neuenschwander, J., Scrivener, K., 2009, “Physical and microstructural aspects of sulfate attack on ordinary and limestone blended Portland cements”, Cement and Concrete Research, V. 39, 1111-1121.