Path of Science: International Electronic Scientific Journal

Agricultural wastes such as Dialium guineense Endocarp are often generated in volumes that surpass disposal efforts. This concerns communities because improperly handled agricultural waste can lead to environmental challenges. Research on the use of agro-industrial or natural waste as cementitious materials tends to focus on the ashes from orange peel, locust bean pod, palm oil fuel, rice husk and sugarcane bagasse as partial replacements for cement. However, investigations are limited, focusing on Dialium guineense Endocarp ash (DEA) as an alternative cementitious material to reduce CO₂ emissions and agricultural waste. This study explores the potential of DEA as a partial cement replacement material. Partial replacement of Portland limestone cement with DEA 1, 2, 3, 4, 5 and 6 wt.% for physical properties while mortar strength was varied from 0 -5 wt.%. Dialium guineense Endocarp pods were collected in Bauchi state- Nigeria, washed, dried, and grinded, followed by determination of thermal stability of the endocarp via Thermogravimetric Analyzer/ Differential Thermal Analyser (TGA/DTA). The resultant ground endocarp was calcined at 600 ^oC in a furnace for 4 hours, characterised by its chemical composition and functional groups via X-ray fluorescence (XRF) and Fourier Transform infrared (FTIR) spectrometer, respectively. The mortar strengths of 72 cubes for 3 days, 7 days, 28 days and 60 days were produced and determined with a mixing ratio of 1:2:4 (water: cement: sand) according to ASTM standards. The XRF analysis of DEA revealed that the composition of silicon, aluminium and iron oxides was less than 50 wt.% (24.84 wt.%), which did not meet the minimum requirement by standard to be considered a pozzolan with a high CaO content of 25.58 wt.% and possessed significant K₂O content of 36.03 wt.%, an increase in the standard consistency and retardation of both setting times of DEA cement blends was experienced when the cement replacement with DEA was increased. The consistencies and setting time of the DEA-cement blends were higher than control. This prolonged setting times and higher consistency could be linked with the unburnt carbon presence in DEA. As the curing age progressed, the mortar strength experienced increments despite clinker diminution, suggesting pozzolanic activity. Most DEA cement blends produced enhanced strength at 28 days for cement replacement up to 4%, which led to diminished strengths that produced strength slightly lower than control despite clinker diminution. The optimum percentage of cement to be replaced with DEA was determined at four wt.%. DEA possesses properties that are useful as a partial cement replacement material.

1. Besong, E. E., Balogun, M. E., Djobissie, S. F. A., Obu, D. C., & Obimma, J. N. (2016). Medicinal and economic value of Dialium guineense. African Journal of Biomedical Research, 19(3), 163-170.

2. Nwosu, M.O. (2000). Plant resources used by traditional woman as herbal cosmetics in south west Nigeria. Arzte fur naturFahr, 41, 111.

3. Akinpelu, A.D., Awoterebo, T.O., Agunbiade, O.M., Aiyegoro, A.O., Okoh I. A. (2011). Antivibrio and preliminary phytochemical characteristics of crude methanolic extract of the leaves of Dialium guineense (wild). Journal of Medicinal Plants Research, 5(11), 2398–2404.

4. Balogun, M. E., Oji, J. O., Besong, E. E., & Umahi, G. O. (2013). Evaluation of the anti-ulcer properties of aqueous leaf extract of Dialium guineense (Velvet Tamarind) on experimentally induced ulcer models in rats. International Journal of Development Research, 3(10), 106-110.

5. Mateljan, G. (2016). The World's Healthiest Foods. Glendale: George Mateljan Foundation.

6. Okafor, J. (1975). The place of the wild (uncultivated) fruit and vegetable in Nigeria diet. In Paper of the National Seminar on Fruits and Vegetables (pp. 262–299). Ibadan: National fruit and vegetable research and demonstration centre.

7. Ubbaonu, C., Onuegbu, N., Banigo, E., & Uzoma, A. (2006). Physico-chemical changes in velvet tamarind (Dialium guineense Wild) during fruit development and ripening. Nigerian Food Journal, 23(1). doi: 10.4314/nifoj.v23i1.33609

8. Olubajo, O. O., Odey, O. A., & Abdullahi, B. (2019). Potential of Orange Peel Ash as a Cement Replacement Material. Path of Science, 5(7), 2009–2019. doi: 10.22178/pos.48-3

9. Waziri, H., & Olubajo, O. (2022). Potentials of Balanite Endocarp Pod Ash as a Cement Replacement Material. Journal of Building Material Science, 4(1), 44–53. doi: 10.30564/jbms.v4i1.4800

10. Akpenpuun, T. D., Akinyemi, B. A., Olawale, O., Aladegboye, O. J., & Adesina, O. I. (2019). Physical, mechanical and microstructural characteristics of cement-locust bean pod ash mortar blend. Journal of Applied Sciences and Environmental Management, 23(3), 377. doi: 10.4314/jasem.v23i3.1

11. Olubajo, O. O., Jibril, A., & Osha, O. A. (2020). Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends. Path of Science, 6(3), 4001–4016. doi: 10.22178/pos.56-2

12. Alnahhal, A. M., Alengaram, U. J., Yusoff, S., Singh, R., Radwan, M. K. H., & Deboucha, W. (2021). Synthesis of sustainable lightweight foamed concrete using palm oil fuel ash as a cement replacement material. Journal of Building Engineering, 35, 102047. doi: 10.1016/j.jobe.2020.102047

13. Olubajo, O. O., Makarfi, I. Y., Ibrahim, M. S., Ayeni, S., & Uche, N. W. (2020). A Study on Ordinary Portland Cement Blended with Rice Husk Ash and Metakaolin. Path of Science, 6(1), 3001–3019. doi: 10.22178/pos.54-4

14. Swaminathen, A. N., Vivek Kumar, C., Robert Ravi, S., & Debnath, S. (2021). Evaluation of strength and durability assessment for the impact of Rice Husk ash and Metakaolin at High Performance Concrete mixes. Materials Today: Proceedings, 47, 4584–4591. doi: 10.1016/j.matpr.2021.05.449

15. Syahida Adnan, Z., Ariffin, N. F., Syed Mohsin, S. M., & Abdul Shukor Lim, N. H. (2022). Review paper: Performance of rice husk ash as a material for partial cement replacement in concrete. Materials Today: Proceedings, 48, 842–848. doi: 10.1016/j.matpr.2021.02.400

16. Raheem, A. A., & Ige, A. I. (2019). Chemical composition and physicomechanical characteristics of sawdust ash blended cement. Journal of Building Engineering, 21, 404–408. doi: 10.1016/j.jobe.2018.10.014

17. Olumide Olu, O., Aminu, N., & Nazif Sabo, L. (2020). The Effect of Sugarcane Bagasse Ash on the Properties of Portland Limestone Cement. American Journal of Construction and Building Materials, 4(2), 77. doi: 10.11648/j.ajcbm.20200402.15

18. Chi, M.-C. (2012). Effects of sugar cane bagasse ash as a cement replacement on properties of mortars. Science and Engineering of Composite Materials, 19(3), 279–285. doi: 10.1515/secm-2012-0014

19. Mangi, S. A., Jamaluddin, N., Wan Ibrahim, M. H., Abdullah, A. H., Abdul Awal, A. S. M., Sohu, S., & Ali, N. (2017). Utilisation of sugarcane bagasse ash in concrete as partial replacement of cement. IOP Conference Series: Materials Science and Engineering, 271, 012001. doi: 10.1088/1757-899x/271/1/012001

20. Awad Allah Mohamed, Y. (2017). Effects of Sugarcane & Bagasse Ash Additive on Portland Cement Properties. International Journal of Sustainable Development Research, 3(6), 85. doi: 10.11648/j.ijsdr.20170306.14

21. Jahanzaib Khalil, M., Aslam, M., & Ahmad, S. (2021). Utilisation of sugarcane bagasse ash as cement replacement for the production of sustainable concrete – A review. Construction and Building Materials, 270, 121371. doi: 10.1016/j.conbuildmat.2020.121371

22. Tennis, P. D. (2005). Portland cement characteristics-2004. Retrieved from http://www.ce.memphis.edu/3137/Documents/Cements%20Today.pdf

23. Dias, P. (2014). Spice Crops Production Technology. N. d.

24. Olubajo, O. O., Osha, O. (2013). Influence of bottom ash and limestone powder on the properties of ternary cement and mortar. International Journal of Engineering Research and Technology, 12(7), 1201–1212.

25. Shafigh, P., Mahmud, H. B., Jumaat, M. Z. B., Ahmmad, R., & Bahri, S. (2014). Structural lightweight aggregate concrete using two types of waste from the palm oil industry as aggregate. Journal of Cleaner Production, 80, 187–196. doi: 10.1016/j.jclepro.2014.05.051

26. Olubajo, O. (2017). A study on Coal bottom ash and limestone effects on the hydration and physico-mechanical properties of ternary cement blends (Doctoral thesis; Abubakar Tafawa Balewa University).

27. Aïtcin, P.-C. (2016). Supplementary cementitious materials and blended cements. Science and Technology of Concrete Admixtures, 53–73. doi: 10.1016/b978-0-08-100693-1.00004-7

28. Federal Highway Administration. (2017, June 06). Fly Ash in Portland Cement Concrete. Retreieved from https://www.fhwa.dot.gov/pavement/recycling/fach03.cfm

29. American Concrete Institute. (1996). Use of Fly Ash in Concrete (ACI 232.2R-96). Retrieved from http://civilwares.free.fr/ACI/MCP04/2322r_96.pdf

30. ASTM International. (2023, July 12). Standard Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste (ASTM C187-16). Retrieved from https://www.astm.org/c0187-16.html

31. ASTM International. (2020, March 12). Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens) (ASTM C109/C109M-20). Retrieved from https://www.astm.org/c0109_c0109m-20.html

32. Ramachandran, V. S. (1996). Concrete Admixture Handbook: Properties, Science and Technology. Ottawa: William Andrew.

33. Shafiq, N., & Nuruddin, M. F. (2010). Degree of hydration of OPC/fly Ash Paste Samples at Different Relative Humidity. Journal of Sustainable Construction Engineering and Technology, 1(1), 47–56.

34. Moropoulou, A., Bakolas, A., Moundoulas, P., Aggelakopoulou, E., & Anagnostopoulou, S. (2005). Strength development and lime reaction in mortars for repairing historic masonries. Cement and Concrete Composites, 27(2), 289–294. doi: 10.1016/j.cemconcomp.2004.02.017

35. ASTM International. (2023, May 14). Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete (ASTM C618-22). Retrieved from https://www.astm.org/c0618-22.html

36. Ikumapayi, C. M. (2017). Crystal and microstructure analysis of Pozzolanic properties of bamboo leaf ash and locust beans pod ash blended cement concrete. Journal of Applied Sciences and Environmental Management, 20(4), 943. doi: 10.4314/jasem.v20i4.6

37. Fauzi, A., Nuruddin, M. F., Malkawi, A. B., & Abdullah, M. M. A. B. (2016). Study of Fly Ash Characterization as a Cementitious Material. Procedia Engineering, 148, 487–493. doi: 10.1016/j.proeng.2016.06.535

38. Yusuf, M. O. (2023). Bond Characterisation in Cementitious Material Binders Using Fourier-Transform Infrared Spectroscopy. Applied Sciences, 13(5), 3353. doi: 10.3390/app13053353

39. Horgnies, M., Chen, J. J., & Bouillon, C. (2013). Overview about the use of Fourier Transform Infrared spectroscopy to study cementitious materials. Retrieved from https://www.witpress.com/Secure/elibrary/papers/MC13/MC13022FU1.pdf

40. Musić, S., Filipović-Vinceković, N., & Sekovanić, L. (2011). Precipitation of amorphous SiO2 particles and their properties. Brazilian Journal of Chemical Engineering, 28(1), 89–94. doi: 10.1590/s0104-66322011000100011

41. Besbes, M., Fakhfakh, N., & Benzina, M. (2009). Characterisation of silica gel prepared by using sol–gel process. Physics Procedia, 2(3), 1087–1095. doi: 10.1016/j.phpro.2009.11.067

42. Ferraro, R. M., Nanni, A., Vempati, R. K., & Matta, F. (2010). Carbon Neutral Off-White Rice Husk Ash as a Partial White Cement Replacement. Journal of Materials in Civil Engineering, 22(10), 1078–1083. doi: 10.1061/(asce)mt.1943-5533.0000112

43. Dave, N., Misra, A. K., Srivastava, A., & Kaushik, S. K. (2017). Setting time and standard consistency of quaternary binders: The influence of cementitious material addition and mixing. International Journal of Sustainable Built Environment, 6(1), 30–36. doi: 10.1016/j.ijsbe.2016.10.004

44. De Weerdt, K., Kjellsen, K. O., Sellevold, E., & Justnes, H. (2011). Synergy between fly ash and limestone powder in ternary cements. Cement and Concrete Composites, 33(1), 30–38. doi: 10.1016/j.cemconcomp.2010.09.006

45. Kaya, A. (2010, September). A study on blended bottom ash cements (Master's thesis). Retrieved from https://open.metu.edu.tr/handle/11511/20236

46. ITec. (2010). Methods of testing cement- part 3: determination of setting times and soundness (EN 196-3:2016). Retrieved from https://standards.iteh.ai/catalog/standards/cen/e4921eca-8101-4261-b066-25d19b9b8e8a/en-196-3-2016?srsltid=AfmBOorogtioW_pFRoQ-myWZ8JgGIQEA-vDlQmSlFHX_ico-iFVaEtCn

47. Olumide Olu, O., Odey Ade, O., & Jibril, A. (2020). Setting Times of Portland Cement Blended with Locust Bean Pod and Eggshell Ashes. American Journal of Chemical Engineering, 8(5), 103. 10.11648/j.ajche.20200805.11