Size Effect of Member on Flexural/Tensile Strength of Porous Concrete

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Key Points

The aim is to examine how the size of porous concrete members affects their flexural and tensile strength.
Evaluated the size effect on flexural and tensile strength of porous concrete members.
Applied the concept of high-stress volume to assess strength with reasonable accuracy.
Analyzed the relationship between maximum aggregate size and strength sensitivity.
Developed a formula to estimate tensile strength based on compression strength for a reference specimen.
Confirmed that the size effect can be evaluated accurately using high-stress volume concept.
Observed that larger aggregate sizes led to a slight increase in sensitivity to the size effect.
Estimated the tensile strength of a standard cylindrical specimen based solely on its compressive strength.
Demonstrated that the proposed size effect rule allows for estimating strength in various sizes of porous concrete members accurately.

Investigates the size effect on flexural and tensile strength in porous concrete, suggesting a method for more accurate design.

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Fukushima et al. (2026) studied this question.

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