Authors : Amassoma, C. A.; Eze, C. L.; Abam, T.K. S.; Gobo, A.E

Volume/Issue : Volume 9 - 2024, Issue 11 - November

Google Scholar : https://tinyurl.com/28j3bk8w

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DOI : https://doi.org/10.38124/ijisrt/IJISRT24NOV926

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Abstract : The Increasing need of energy and its high price tempts exploration and production industries to drill more oil wells daily and create more drilling waste. The current trend of waste management in the world is to put the wastes into beneficial use where possible. The waste to wealth approach is the crux of this study which evaluated the pozzolanic properties and potential of using treated drill cuttings as a partial replacement of cement in concrete production. To achieve this objective, chemical tests, physical tests and compressive strength tests were carried out to determine the suitability of the treated drill cuttings for pozzolanicity. All tests were as prescribed by American Society for Testing and Materials (ASTM) Standard and applicable national standard where such exists. The drill cuttings moisture content, loss-on-ignition, pertinent chemical oxides and physical properties were determined. The compressive strength test of the mortar cubes was conducted using a mold of 150 mm x 150 mm x 150 mm, mix proportion of 1:3 (binder: sand) and water-to-cement ratio of 0.4:1. A total of 54 cubes were cast with treated drill cuttings replacement levels of 0% (control), 10%, 20%, 30%, 40% and 50% and each cured for 7days, 14 days and 28 days before testing for the determination of compressive strength of the blended concrete blocks. Results showed that the SiO2 + Al2O3 + Fe2O3 value of the treated drill cuttings satisfied the requirement of 70% for pozzolans at 69.16% which is less than 1% below the recommended minimum value of 70% specified for a good pozzolan. In previous studies, materials with values of SiO2 + Al2O3 + Fe2O3 less than 70% but greater than 60% have been used as pozzolans. The other oxides (Na2O and SO3) also were within their acceptable limits for pozzolan as stipulated by ASTM C618. The result of the physical properties of the treated drill cuttings complied with the applicable standard limit. The compressive strength of the mortar was higher than that of control mortar (0% treated drill cuttings addition) at 10% and 20% replacements of cement at ages 7, 14, and 28 days with compressive strengths of 18.67 N/mm2, 19.56 N/mm2 and 21.03 N/mm2 respectively, which exceeded the minimum Compressive Strength of 2.5 Nmm2 to 3.45 Nmm2 recommended for sandcrete blocks production. Therefore, partial replacement of cement with treated drill cuttings at 10% and 20% replacement levels, has a significant effect on the compressive strength of the produced sandcrete blocks. Hence, treated drill cuttings can serve as a pozzolan for sandcrete blocks production.

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