Impact strength in concrete is a critical measure that reflects the material's capability to endure the forces applied during pile driving and when supporting machinery foundations that experience impulsive loads. It is also essential when handling precast concrete components to prevent accidental damage. The impact strength is assessed by observing the concrete's resistance to repeated impacts and energy absorption capacity. A key indicator of significant damage to concrete is when it does not rebound after being struck.

The formulation of the concrete mix affects its impact strength, with coarse aggregates that are more angular and have rougher surfaces leading to an increase in impact strength. Such mixes indicate a stronger bond and are believed to contribute more to the material's flexural strength rather than just its compressive strength. The conditions under which concrete is stored can also alter its impact strength, with wet conditions typically reducing the strength compared to dry storage.

Improving impact strength can be achieved by selecting smaller maximum aggregate sizes and aggregates with a lower modulus of elasticity and Poisson's ratio. Additionally, for optimal impact strength, it is advantageous to use a concrete mix with a cement content not exceeding 670 pounds per cubic yard. These adjustments can make concrete more resilient to the dynamic and potentially damaging forces it may encounter.

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7.12 : Impact Strength of Concrete

Strength of Concrete

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7.1 : Tensile Strength Considerations of Concrete

Strength of Concrete

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7.2 : Behavior of Concrete Under Compressive Load

Strength of Concrete

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7.3 : Porosity in Cement Paste

Strength of Concrete

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7.4 : Total Voids in Concrete

Strength of Concrete

52 Vues

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7.5 : Pore Size Distribution

Strength of Concrete

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7.6 : Microcracking in Concrete

Strength of Concrete

62 Vues

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7.7 : Water Cement Ratio

Strength of Concrete

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7.8 : Aggregate Cement Ratio

Strength of Concrete

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7.9 : Transition Zone

Strength of Concrete

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7.10 : Relation Between Tensile Strength and Compressive Strength of Concrete

Strength of Concrete

71 Vues

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7.11 : Fatigue Strength of Concrete

Strength of Concrete

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7.13 : Abrasion Resistance of Concrete

Strength of Concrete

55 Vues

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7.14 : Reinforcements in Concrete

Strength of Concrete

43 Vues

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7.15 : Fiber Reinforced Concrete

Strength of Concrete

46 Vues

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