高強度コンクリートの構造体と標準養生供試体の強度差に及ぼす要因

Abstract

Strength difference of high strength concrete between the strength in structures and the strength of standard cured specimens was investigated from the results of field experiments. Mock-up columns were fabricated in the field experiments with a cross-section of from 750 by 750 mm to 1000 by 1000 mm, and the compressive strength of cores drilled from mock-up column were compared with the strength of standard cured specimens. To confirm the influence of materials, 3 types of binders and 5 types of aggregates were examined. The water- binder ratios were varied from 0.20 to 0.45. It was found that the difference between compressive strength of specimens and that in structures was influenced by the kind of binder, the maximum temperature of the columns, and the water-binder ratio.