Prediction model of shrinkage reduction in expansive concrete

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820227
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Muroran Institute of Technology
• Principal Investigator: CHOI Hyeonggil 室蘭工業大学, 工学(系)研究科(研究院), 助教 (20726806)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 膨張材 / モデル化 / 収縮ひび割れ

Outline of Final Research Achievements

In this study, the mechanical properties, volume changes and creep of concrete mixed with expansive additives, which is used as a countermeasure for cracking and shrinkage, were modeled and the model was verified. The results of an experimental verification of the model showed that the values predicted by the model correlated closely with the experimental values. In addition, the generated stress was estimated using the modeled creep phenomenon to calculate changes in the stress under the restraint condition, thus allowing a comparison with experiment to verify the applicability of model and the validation of the stress prediction technique. And suggests the macro prediction method for shrinkage reduction and cracking control effects was can be supply practical data in application of expansive concrete and utility in the future.

Free Research Field

建築学