What does this research mean for the field?

Using small-sized concrete specimens (φ80 by 160mm) yields comparable compressive strength test values to standard specimens (φ100 by 200mm), facilitating productivity improvements in concrete testing. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to evaluate the effectiveness of using smaller concrete specimens in assessing compressive strength.

February 22, 2026AIJ Journal of Technology and Design0 citationsOpen Access

QUALITY CONTROL FOR COMPRESSIVE STRENGTH OF CONCRETE BY THE USING SMALL-SIZED SPECIMENS WHICH DIAMETER IS 80mm

TKTatsuki KanekoNihon University MOMahito OKURATaisei (Japan)SWSatoshi WATANABENitto Chemical Industry (Japan)

Key Points

The aim is to evaluate the effectiveness of using smaller concrete specimens in assessing compressive strength.
Reviewed compressive strength tests using small-sized specimens (φ80mm)
Compared results with standard larger specimens (φ100mm)
Assessed the impact of specimen size on testing outcomes and production processes.
Small-sized specimens showed minimal effect on compressive strength values compared to larger specimens.
Demonstrated the feasibility of using small specimens for various material management techniques and mix designs.

Abstract

For the purpose of productivity improvement which are the working property and the labor saving, this report reviews small sized specimens for compressive strength of concrete. From results of examination, when using the specimens of φ80 by 160mm, effect for test values due to production process and specimen numbers for compressive strength are small using φ100 by 200mm. Furthermore, showed the applicability of small specimens about management technique for the various using materials, mix designs and environment.

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