Mechanical and Durability Properties of Mortars Containing Olive Waste Ash

Öz

The potential usage of olive waste ash (OWA) as a partial replacement for cement in mortar production is investigated in this study. The experimental program was conducted in two phases. In the first phase, OWA was calcined at 400 °C and 600 °C, then prepared in three particle size ranges (<90 µm, 90–180 µm, and 180–360 µm). The most suitable calcination conditions and particle size were identified to achieve high pozzolanic activity. Using these optimum conditions, the second phase involved producing mortars with different replacement levels (5–20% by weight of cement), and evaluating mechanical strength, alkali–silica reaction (ASR), capillary water absorption, and microstructural properties. Results from the first phase showed that finer particles and higher calcination temperatures enhanced pozzolanic activity as expected, and the processing conditions of OWA for the second phase are determined. In the second phase, strength decreased gradually with increasing replacement levels, although acceptable results were generally obtained at 10–15% replacement. Accelerated mortar bar tests (AMBT) indicated decreases in ASR expansion in mortars containing OWA, while capillary water absorption tests revealed higher water uptake due to increased porosity. XRD and SEM analyses confirmed the participation of OWA in pozzolanic reactions and the formation of calcium–silicate–hydrate (C–S–H). Overall, the findings demonstrate that OWA, particularly when calcined at 600 °C and ground to fine particle sizes, can be used as a sustainable supplementary cementitious material at 10–15% replacement levels.

Anahtar Kelimeler

• Olive waste ash
• Supplementary cementitious material
• Mortar
• Pozzolanic activity index
• Sustainability

Kaynakça

1. Aburawi, M. M., & Al-Madani, H. M. (2018). The effect of using ash residues of olive fruits on the properties of cement mortar. Proceedings of the First Conference for Engineering Sciences and Technology (CEST-2018), Vol. 2, (pp. 351–360). AIJR Publisher. https://doi.org/10.21467/proceedings.4.1
2. Ahmad, J., Arbili, M. M., Alabduljabbar, H., & Deifalla, A. F. (2023). Concrete made with partially substitution corn cob ash: A review. Case Studies in Construction Materials, 18, e02100. https://doi.org/10.1016/j.cscm.2023.e02100
3. Ahmaruzzaman, M. (2010). A review on the utilization of fly ash. Progress in Energy and Combustion Science, 36(3), 327–363. https://doi.org/10.1016/j.pecs.2009.11.003
4. Al-Akhras, N. M. (2012). Performance of olive waste ash concrete exposed to alkali-silica reaction. Structural Concrete, 13(4), 221–226. https://doi.org/10.1002/suco.201100058
5. Al-Akhras, N. M., & Abdulwahid, M. Y. (2010). Utilisation of olive waste ash in mortar mixes. Structural Concrete, 11(4), 221–228. https://doi.org/10.1680/stco.2010.11.4.221
6. Al-Akhras, N. M., Al-Akhras, K. M., & Attom, M. F. (2009). Performance of olive waste ash concrete exposed to elevated temperatures. Fire Safety Journal, 44, 370–375. https://doi.org/10.1016/j.firesaf.2008.08.006
7. ASTM International. (2020). ASTM C185-20 Standard test method for air content of hydraulic cement mortar. ASTM International. https://doi.org/10.1520/C0185-20
8. ASTM International. (2022a). ASTM C311-22 Standard test methods for sampling and testing fly ash or natural pozzolans for use. ASTM International. https://doi.org/10.1520/C0311_C0311M-22

9. ASTM International. (2022b). ASTM C618 Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete. ASTM International. https://doi.org/10.1520/C0618-22
10. ASTM International. (2023a). ASTM C1567-23 Standard test method for determining the potential alkali–silica reactivity of combinations of cementitious materials and aggregate (accelerated mortar-bar method). ASTM International. https://doi.org/10.1520/C1567-23
11. ASTM International. (2023b). ASTM C1778-23 Standard guide for reducing the risk of deleterious alkali-aggregate reaction in concrete. ASTM International. https://doi.org/10.1520/C1778-23
12. Bani Odi, I. J. A. (2007). Utilization of olive husk as a replacement of fine aggregate in Portland cement concrete mixes for non-structural uses (Master’s thesis, An-Najah National University, Faculty of Graduate Studies).
13. British Standards Institution. (1999). BS EN 1015-3:1999 Methods of test for mortar for masonry – Determination of consistence of fresh mortar (by flow table). British Standards Institution.
14. British Standards Institution. (2002). BS EN 1015-18: Methods of test for mortar for masonry – Determination of water absorption coefficient due to capillary action of hardened mortar. British Standards Institution.
15. British Standards Institution. (2008). BS EN 934-1:2008 Admixtures for concrete, mortar and grout – Common requirements. British Standards Institution.
16. British Standards Institution. (2016). EN 196-1: Methods of testing cement – Part 1: Determination of strength. British Standards Institution.
17. British Standards Institution. (2019). BS EN 197-1:2011 Cement – Composition, specifications and conformity criteria for common cements. British Standards Institution.
18. Chen, C., Habert, G., Bouzidi, Y., & Jullien, A. (2010). Environmental impact of cement production: Detail of the different processes and cement plant variability evaluation. Journal of Cleaner Production, 18(5), 478–485. https://doi.org/10.1016/j.jclepro.2009.12.014
19. Cheriyan, D., & Choi, J. H. (2020). A review of research on particulate matter pollution in the construction industry. Journal of Cleaner Production, 254, 120077. https://doi.org/10.1016/j.jclepro.2020.120077
20. Dahim, M. A., Abuaddous, M., Al-Mattarneh, H., Alluqmani, A. E., & Ismail, R. (2022). The use of olive waste for development sustainable rigid pavement concrete material. IOP Conference Series: Materials Science and Engineering, 1212, 012032. https://doi.org/10.1088/1757-899X/1212/1/012032
21. Doğruyol, M., & Çetin, S. Y. (2025). From agricultural waste to green binder: Performance optimization of wheat straw ash in sustainable cement mortars. Sustainability, 17(19), 8960. https://doi.org/10.3390/su17198960
22. Ekincioglu, O., Gurgun, A. P., Engin, Y., Tarhan, M., & Kumbaracibasi, S. (2013). Approaches for sustainable cement production: A case study from Turkey. Energy and Buildings, 66, 136–142. https://doi.org/10.1016/j.enbuild.2013.07.006
23. Elakkiah, C. (2019). Rice husk ash (RHA)—The future of concrete. In B. Das & N. Neithalath (Eds.), Sustainable construction and building materials (Lecture Notes in Civil Engineering, Vol. 25, pp. 439–447). Springer. https://doi.org/10.1007/978-981-13-3317-0_39
24. Fantilli, A. P., & Jóźwiak-Niedźwiedzka, D. (Eds.). (2021). Supplementary cementitious materials in concrete. MDPI Books. https://doi.org/10.3390/books978-3-0365-1482-6
25. Ghanem, H., Ghazzawi, S., Khatib, J., Elkordi, A., & Kırgız, M. S. (2025). Physical, mechanical, and volumetric stability properties of mortar with olive waste ash as cement substitute. Engineering Reports, 7(11), 1–22. https://doi.org/10.1002/eng2.70501
26. Hakeem, I. Y., Agwa, I. S., Tayeh, B. A., & Abd-Elrahman, M. H. (2022). Effect of using a combination of rice husk and olive waste ashes on high-strength concrete properties. Case Studies in Construction Materials, 17, e01486. https://doi.org/10.1016/j.cscm.2022.e01486
27. Hasanbeigi, A., Menke, C., & Price, L. (2010). The CO₂ abatement cost curve for the Thailand cement industry. Journal of Cleaner Production, 18(15), 1509–1518. https://doi.org/10.1016/j.jclepro.2010.06.005
28. Hytiris, N., Kapellakis, I. E., La Roij de R., & Tsagarakis, K. P. (2004). The potential use of olive mill sludge in solidification process. Resources, Conservation and Recycling, 40(2), 129–139. https://doi.org/10.1016/S0921-3449(03)00038-7
29. International Energy Agency. (2009). Cement technology roadmap: Carbon emissions reductions up to 2050. IEA Publications.
30. Iqbal, M. Z., & Shafiq, M. (1995). Effect of cement dust pollution on the growth of some tree species. Pakistan Journal of Scientific and Industrial Research, 38(9–10), 368–370.
31. Jha, P., Sachan, A. K., & Singh, R. P. (2021). Bagasse ash (ScBa) and its utilization in concrete as pozzolanic material: A review. In S. Kumar Shukla, S. N. Raman, B. Bhattacharjee, & J. Bhattacharjee (Eds.), Advances in Geotechnics and Structural Engineering (Lecture Notes in Civil Engineering, Vol. 143, pp. 471-480). Springer. https://doi.org/10.1007/978-981-33-6969-6_41
32. Kesarwani, S., Shukla, G., & Singh Chauhan, M. (2026). Utilisation of waste corn cob ash in cement concrete: A statistical approach toward environmental sustainability. Asian Journal of Civil Engineering, 27, 747-766. https://doi.org/10.1007/s42107-025-01529-y
33. Kou, R., Guo, M.-Z., Han, L., Li, J.-S., Li, B., Chu, H., Jiang, L., Wang, L., Jin, W., & Poon, C. S. (2021). Recycling sediment, calcium carbide slag and ground granulated blast-furnace slag into novel and sustainable cementitious binder for production of eco-friendly mortar. Construction and Building Materials, 305, 124772. https://doi.org/10.1016/j.conbuildmat.2021.124772
34. Koya, N. K. M., & Nair, D. G. (2021). Investigations on the pozzolanic properties of residual rice husk ash. In S. Biswas, S. Metya, S. Kumar, & P. Samui (Eds.), Advances in Sustainable Construction Materials (Lecture Notes in Civil Engineering, Vol. 124, pp. 421-431). Springer. https://doi.org/10.1007/978-981-33-4590-4_40
35. Lila, K., Belaadi, S., Solimando, R., & Zirour, F. R. (2020). Valorisation of organic waste: Use of olive kernels and pomace for cement manufacture. Journal of Cleaner Production, 277, 123703. https://doi.org/10.1016/j.jclepro.2020.123703
36. Lourdu, A. R., & Ali, S. H. M. (2025). Enhancing concrete with SCMs: Unveiling the pros and cons of fly ash, silica fume, and slag. Matéria (Rio de Janeiro), 30, e20250237. https://doi.org/10.1590/1517-7076-RMAT-2025-0237
37. Malhotra, V. M. (2010). Global warming, and role of supplementary cementing materials and superplasticizers in reducing greenhouse gas emissions from the manufacturing of Portland cement. International Journal of Structural Engineering, 1(2), 116–130.
38. Ndahirwa, D., Zmamou, H., Lenormand, H., & Leblanc, N. (2022). The role of supplementary cementitious materials in hydration, durability and shrinkage of cement-based materials, their environmental and economic benefits: A review. Cleaner Materials, 5, 100123. https://doi.org/10.1016/j.clema.2022.100123
39. Norhasri, M. S. M., Faiz, A. R. M., Shafienaz, I., Shafee, H. M., Fauzi, M. A. M., & Nurliza, J. (2021). Inclusion of palm oil fuel ash (POFA) as micro engineered material (MEM) in ultra high performance concrete (UHPC). In S. S. Mohd Zuki, S. N. Mokhatar, S. Shahidan, & M. H. Bin Wan Ibrahim (Eds.), Proceedings of the Sustainable Concrete Materials and Structures in Construction 2020 (Lecture Notes in Civil Engineering, Vol. 157, pp. 57–66). Springer. https://doi.org/10.1007/978-981-16-2187-1_6
40. Oluseyi, T., Olayinka, K., & Adeleke, I. (2011). Assessment of ground water pollution in the residential areas of Ewekoro and Shagamu due to cement production. African Journal of Environmental Science and Technology, 5(10), 786–794.
41. Owaid, H. M., Hamid, R. B., & Taha, M. R. (2012). A review of sustainable supplementary cementitious materials as an alternative to all-Portland cement mortar and concrete. Australian Journal of Basic and Applied Sciences, 6(9), 287–303.
42. Shaladi, R.J., Johari, M.A.M., Ahmad, Z.A., et al. (2022). The influence of palm oil fuel ash heat treatment on the strength activity, porosity, and water absorption of cement mortar. Environmental Science and Pollution Research, 29, 72493–72514. https://doi.org/10.1007/s11356-022-20710-3
43. Shelote, K. M., Bala, A., & Gupta, S. (2023). An overview of mechanical, permeability, and thermal properties of silica fume concrete using bibliographic survey and building information modelling. Construction and Building Materials, 385, 131489. https://doi.org/10.1016/j.conbuildmat.2023.131489
44. Sohal, K. S., & Singh, R. (2021). Sustainable use of sugarcane bagasse ash in concrete production. In H. Singh, P. P. Singh Cheema, & P. Garg (Eds.), Sustainable Development Through Engineering Innovations (Lecture Notes in Civil Engineering, Vol. 113, pp. 397-407). Springer. https://doi.org/10.1007/978-981-15-9554-7_34
45. Tayeh, B. A., Hadzima-Nyarko, M., Zeyad, A. M., & Al-Harazin, S. Z. (2021). Properties and durability of concrete with olive waste ash as a partial cement replacement. Advances in Concrete Construction, 11(1), 59–71. https://doi.org/10.12989/acc.2021.11.1.059
46. Thiedeitz, M., Ostermaier, B., & Kränkel, T. (2022). Rice husk ash as an additive in mortar – Contribution to microstructural, strength and durability performance. Resources, Conservation and Recycling, 184, 106389. https://doi.org/10.1016/j.resconrec.2022.106389
47. Thomas, B. S., Kumar, S., & Arel, H. S. (2017). Sustainable concrete containing palm oil fuel ash as a supplementary cementitious material: A review. Renewable and Sustainable Energy Reviews, 80, 550–561. https://doi.org/10.1016/j.rser.2017.05.128
48. Tiseo, I. (2025, October 26). Cement industry emissions worldwide – Statistics & facts. Statista. https://www.statista.com/topics/11056/cement-industry-emissions-worldwide/
49. Wei, J., & Cen, K. (2019). A preliminary calculation of cement carbon dioxide in China from 1949 to 2050. Mitigation and Adaptation Strategies for Global Change, 24, 1343–1362. https://doi.org/10.1007/s11027-019-09848-7
50. Zeggar, M. L., Azline, N., & Safiee, N. A. (2019). Fly ash as supplementary material in concrete: A review. IOP Conference Series: Earth and Environmental Science, 357(1), 012025. https://doi.org/10.1088/1755-1315/357/1/012025
51. Zhu, X., Yang, J., Huang, Q., & Liu, T. (2022). A review on pollution treatment in cement industrial areas: From prevention techniques to Python-based monitoring and controlling models. Processes, 10(12), 2682. https://doi.org/10.3390/pr10122682