Torsional Strength of Reinforced Concrete Beams with Brine and Olive Oil Mill Wastewater

The authors conducted a comprehensive research study on adding olive oil mill and brine wastewater to the concrete mix to investigate torsion, bending stress, shear, and compressive strength. The total number of specimens were ۳۳ beams ۱۰۰ mm (depth) × ۱۰۰ mm (width) × ۵۰۰ mm (length). Three beams were used as control samples, and thirty beams were divided into two groups: fifteen samples were from an olive oil mill, and the other fifteen were brine wastewater with different percentages of additive material (olive oil mill and brine wastewater), with ۲.۵, ۵.۰, ۷.۵, ۱۰.۰, and ۱۵.۰ % of each. The beams were reinforced with ۴ ϕ ۸ mm as longitudinal steel bars and ϕ ۴ mm stirrups spaced at ۲۰ mm. All specimens were tested at ۲۸ days. It was found that the torsional strength of the samples containing brine wastewater when added at the best percentage, which is ۱۰%, was ۵.۴۶ MPa. As is the case when adding olive oil mill wastewater with the best percentage, which is ۷.۵%, it was ۵.۱۶ MPa. These data are greater than the torsional strength in the reference samples, which were ۴.۳۸ MPa, meaning that the torsional strength when adding brine wastewater and olive oil mill wastewater increases by ۲۴% and ۱۷%, respectively. Doi: ۱۰.۲۸۹۹۱/CEJ-۲۰۲۳-۰۹-۰۳-۰۱۲ Full Text: PDF

کلیدواژه ها:

Torsional Strength ، Brine Wastewater ، Olive Oil Mill Wastewater ، Reinforced Concrete Beams.