Compressive Strength and Properties of Oil-Contaminated Concrete

Concrete exposed to oil contamination—whether from crude spills, workshop discharges or waste engine oils—exhibits notable alterations in its mechanical and durability characteristics. Oil ingress into the pore structure reduces cement–aggregate bonding, increases porosity and entrains air, leading to declines in compressive strength of up to 30% under high contamination levels. Oil films interfere with hydration kinetics, diminish workability and modify pore-size distribution, often shifting failure modes from brittle cracks to smeared plastic zones. In geopolymer systems, low oil contents (up to 4%) may marginally enhance strength, but higher levels invariably impair performance unless countermeasures are applied. Practical mitigation strategies include fibre reinforcement, which restores toughness and load transfer; supplementary cementitious materials such as silica fume to refine pore structure; and tailored admixtures to improve oil tolerance. These approaches not only address strength recovery but also embrace waste valorisation and environmental remediation, offering sustainable pathways for infrastructure applications in oil-affected regions.

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Compressive Strength and Properties of Oil-Contaminated Concrete publication trend

The graph below shows the total number of articles in compressive strength and properties of oil-contaminated concrete across all publications each year (not limited to Nature Index journals).

Technical terms

Compressive strength: The maximum axial load a concrete specimen can bear per unit cross-sectional area before failure.

Porosity: The proportion of void volume within hardened concrete, influencing permeability and strength.

Geopolymer: A cement-free binder formed by alkali activation of aluminosilicate precursors, offering low-carbon alternatives.

Admixture: A chemical or mineral additive incorporated into fresh concrete to modify its properties, such as workability or durability.

Fibre reinforcement: The inclusion of discrete fibrous materials to enhance tensile strength, toughness and crack control.

Workability: The ease with which concrete can be mixed, placed and finished without segregation.

References

1. The Influence of Fibres on the Properties and Sustainability of Oil-Impacted Concrete. Sustainability (2024).
2. Effect of Short Fibres in the Mechanical Properties of Geopolymer Mortar Containing Oil-Contaminated Sand. Polymers (2021).
3. Application of Automobile Used Engine Oils and Silica Fume to Improve Concrete Properties for Eco-Friendly Construction. Environmental and Climate Technologies (2020).