Rapid test of drying shrinkage strain of concrete

2014 Fiscal Year Final Research Report

• Project/Area Number: 24760348
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Okayama University
• Principal Investigator: FUJII Takashi 岡山大学, 環境生命科学研究科, 准教授 (10537236)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: コンクリート / 乾燥収縮ひずみ / 早期推定試験 / コア供試体 / 拡散理論 / スラグ骨材 / 特殊混和材 / 骨材の岩種

Outline of Final Research Achievements

In general, as for test of drying shrinkage of concrete, 100 by 100 by 400mm prism specimen is used, and test period is more than 180 days. In this study, the method to estimate a drying shrinkage value measured using a 100 by 100 by 400mm prism test specimens at the 182 days in the period when it had a short. Various kinds of concrete made in laboratory or in ready mixed concrete factory are used in this study. As a result, it is shown that the drying shrinkage strain measured by core test specimen of φ50 by 100mm at 42 days was equivalent the drying shrinkage strain measured by prism specimen of 100 by 100 by 400mm at 182days.

Free Research Field

コンクリート工学