Strength Characteristics of Concrete with Brine and Olive Oil Mill Wastewaters

Alzgool, Husein A.

doi:10.37624/ijert/13.10.2020.2831-2838

Cited by 6 publications

(12 citation statements)

References 3 publications

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“…Previous research showed that the addition of olive oil mill and brine wastewaters significantly increased the compressive strength when compared to the reference mixtures and also showed that the best percentages that could be added were 7.5% and 10% of the olive oil mill and brine wastewater, respectively, which have been proven in this research [1][2][3][4].…”

Section: Introductionsupporting

confidence: 72%

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

Al-Baijat

Alzgool

2023

Civ Eng J

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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 33 beams 100 mm (depth) × 100 mm (width) × 500 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 2.5, 5.0, 7.5, 10.0, and 15.0 % of each. The beams were reinforced with 4 ϕ 8 mm as longitudinal steel bars and ϕ 4 mm stirrups spaced at 20 mm. All specimens were tested at 28 days. It was found that the torsional strength of the samples containing brine wastewater when added at the best percentage, which is 10%, was 5.46 MPa. As is the case when adding olive oil mill wastewater with the best percentage, which is 7.5%, it was 5.16 MPa. These data are greater than the torsional strength in the reference samples, which were 4.38 MPa, meaning that the torsional strength when adding brine wastewater and olive oil mill wastewater increases by 24% and 17%, respectively. Doi: 10.28991/CEJ-2023-09-03-012 Full Text: PDF

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Section: Introductionsupporting

confidence: 72%

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

Al-Baijat

Alzgool

2023

Civ Eng J

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“…In the previous studies [31,32], the material from olive oil mill wastewaters was studied in detail. Table 1 shows the specifications of the olive oil mill wastewaters that were used in this research, which were taken from an olive oil mill 5 km away from the university campus.…”

Section: Olive Oil Mill Wastewatersmentioning

confidence: 99%

“…The physical and chemical specifications of the brain wastewaters used in this research are shown in Table 2. To learn more, you can review previous studies [31,32].…”

Section: Brine Wastewatersmentioning

confidence: 99%

“…The standards have been approved (B.S.1881.part (116):1989), and (B.S.1881.part (118):1983) [31,32]. In preparing the models for this research, in which the molds 150×300 mm, cylinders used should be of a non-absorbable material (Figure 2).…”

Section: Moldingsmentioning

confidence: 99%

“…The specimens are cylinders measuring 150×300 cm of concrete, and a steel bar was poured into the center of the sample and tested according to the ASTM C900 -19. Samples with ratios of more than 15% were not used, and this is due to previous studies [29][30][31][32], which proved that the use of ratios greater than 15% leads to weak strength concrete on compression and bending.…”

Section: Introductionmentioning

confidence: 99%

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Reinforced-concrete Bond with Brine and Olive Oil Mill Wastewater

2022

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Since the interaction between the steel reinforcement and concrete directly controls the bond strength between them, poor bond performance results in a direct negative effect on the existing state of reinforced concrete structures. This bond is one of the most important factors affecting the strength of reinforced concrete. The bond strength is measured using the pull-out test. The present paper discusses the effect of the addition of brine and olive oil mill wastewaters to the reinforced concrete mixes. The main objective of this study is to determine the effect of brine wastewaters and olive oil mill wastewaters on the bond strength between steel and concrete when adding each of the admixtures to the concrete components. Pull-out tests were conducted on concrete mixes with additive contents of 2.5, 5, 7.5, 10, and 15 % by weight of water for each. It was found that the bonding strength of reinforced concrete specimens with an olive oil mill and brine wastewater improved and decreased by approximately 6–10% and 2–5%, respectively, if compared to the reference samples. These values were observed for mixes with additive contents of 7.5% for olive oil mill wastewaters and 10% for brine wastewaters. Doi: 10.28991/CEJ-2022-08-02-010 Full Text: PDF

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