Effect of Natural Zeolite-Pozzolan on Compressive Strength of Oil-Polluted Concrete Marine Structures

Shahrabadi, Hamid; Sayareh, Sina; Sarkardeh, Hamed

doi:10.28991/cej-030985

Cited by 8 publications

(4 citation statements)

References 15 publications

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“…Based on these characteristics, the opinion that such mineral has a great potential as adsorbent of greenhouse gas sequestration at peat land area especially for oil palm cultivation [13]. Employing this evidence and supported also by previous studies reported by others [3] [4] [9] [17] [18], this particular mineral originated from Bayah was considered to be potential as oil spill adsorbent.…”

Section: Properties Of Zeolite and Crude Oilmentioning

confidence: 52%

The Potential Use of Natural Clinoptilolite Zeolite for Crude Oil Spill Removal from Sea Water

Kalbuadi¹,

Goenadi²,

Santi³

et al. 2019

JMMCE

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Accidental spillage or drainage from land of crude oil to the marine environment will potentially cause serious damage to the environment and marine life. Many efforts have been focused on the use of most efficient adsorbent to remove the oil and/or oil-decomposing agent from the water. The current study was aimed at to evaluate the most abundantly-available natural zeolite dominated by clinoptilolite mineral and pronounced molecular sieve characteristics as crude oil spill removal in sea water. Bayah-originated zeolite was characterized by using X-ray diffraction (XRD) analysis, pore distribution and average size, gas sorption capacity, and scanning electron microscopy (SEM). A laboratory experiments were conducted by reacting a 100-mesh zeolite with and without microbial enrichment to crude oil in a 250 mL sea water (3.7% NaCl and pH 6.7) jar at different oil/zeolite ratios, i.e. 50%, 100%, 200%, and 400% (v/w) with three replicates. Observations were made on the stability of zeolite-oil mixture for one week, the weight of zeolite mixed with oil, the oil adsorbed by the zeolite, and free oil after 24-hrs settling. The results indicate that zeolite has highly potential as crude oil adsorbent and the highest oil sorption obtained at zeolite/oil ratio of 1:1 with 86.3% oil adsorbed or 0.87 mL oil per gram zeolite. Enrichment of zeolite with Bacillus subtilis improved the adsorbed oil by the mineral.

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Section: Properties Of Zeolite and Crude Oilmentioning

confidence: 52%

The Potential Use of Natural Clinoptilolite Zeolite for Crude Oil Spill Removal from Sea Water

Kalbuadi¹,

Goenadi²,

Santi³

et al. 2019

JMMCE

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“…The cement used is type II cement (Irawan, 2013). The test object is then immersed in different types of water, namely freshwater, and seawater, to determine the effect of seawater on concrete (Shahrabadi et al, 2017). The results of the compressive strength and permeability tests on specimens immersed in freshwater and seawater were then compared.…”

Section: Methodsmentioning

confidence: 99%

Fly Ash and Silica Fume Substitution on Compressive Strength and Permeability of Concrete in the Marine Environment

Sudarsono,

Wahyudi,

Adi

2023

jpensil

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Cement, as a concrete-forming material, is a contributor to CO2 emissions in the world. Reducing cement and substituting fly ash and silica fume as concrete substitution materials in the manufacture of concrete makes green concrete without lowering the quality of the concrete. Concrete in the marine environment is frequently destroyed by severe environmental elements, such as seawater penetration; hence, high-performance concrete materials are required. This research aims to analyze the effect of adding fly ash and silica fume on concrete compressive strength and permeability. The specimens made were then immersed in freshwater and seawater. Analysis of the compressive strength test result shows that the compressive strength values for the samples treated with freshwater or seawater have exceeded the expected compressive strength of 30 MPa. The permeability test on the test object resulted in the supplementary fly ash to the concrete immersed in freshwater having a good value, i.e., the water penetration was below that required by DIN-1045, namely 5 cm. The penetration of concrete with fly ash impressed in seawater is good only in concrete with a 10% fly ash variation. The water penetration value still meets the requirements in concrete with silica fume for all variations with freshwater and seawater treatment.

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“…As can be known, substitution a portion of the cement by pozzolanic materials such as silica fume could be used to improve the mechanical properties of concrete and reduced porosity and consolidate the transition zone between fibers and the cement paste. The durability of concrete, especially in marine conditions, could be improved by silica fume [13,48]. Chabahar limestone rubble as a coarse aggregate with a maximum size of 19 mm and fine aggregate with a 2.6 fineness modulus were used.…”

Section: Methodsmentioning

confidence: 99%

Strength of Different Fiber Reinforced Concrete in Marine Environment

Amini

Bafghi

Safayenikoo

et al. 2018

Self Cite

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In this paper, the compressive strength, tensile strength and growing rate of compressive strength in 3, 7, 28 and 90 day ages for steel, polypropylene and hybrid steel-polypropylene fiber reinforced concrete with different water to binder ratios (0.4 and 0.5) in a real marine condition and tidal zone were determined. Moreover, regarding a large number of gathered data from the other researches, new equations between compressive strength, tensile strength and elasticity modulus for different types of steel fiber reinforced concrete were proposed. Finally, proposed equations were compared and verified for a marine environment. Based on marine environment results, compressive strength of polypropylene and hybrid steelpolypropylene fiber reinforced concrete were about 18 % and 5 % greater than plain concrete in 90 day ages, respectively and steel fibers had not meaningful effect on compressive strength in 90 day ages. By increasing the water to binder ratio, the compressive strength of plain concrete and steel fiber reinforced concrete was decreased about 18 % and 25 %, respectively. Also in 28 and 90 days, steel fiber reinforced concrete tensile strength was increased about 15 % in 0.4 water to binder ratio and 20 % in 0.5 water to binder ratio rather than plain concrete. Effect of steel fiber in increment of plain concrete tensile strength in 0.5 water to binder ratio was higher than 0.4. Steel fiber reinforced concrete elasticity modulus was lower than related plain concrete and with increasing the compressive strength, the difference between elasticity modulus of steel fiber reinforced concrete and plain concrete was decreased.

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Effect of Natural Zeolite-Pozzolan on Compressive Strength of Oil-Polluted Concrete Marine Structures

Cited by 8 publications

References 15 publications

The Potential Use of Natural Clinoptilolite Zeolite for Crude Oil Spill Removal from Sea Water

The Potential Use of Natural Clinoptilolite Zeolite for Crude Oil Spill Removal from Sea Water

Fly Ash and Silica Fume Substitution on Compressive Strength and Permeability of Concrete in the Marine Environment

Strength of Different Fiber Reinforced Concrete in Marine Environment

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