Development of frost resistance evaluation method for building materials using the critical degree of saturation method

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560674
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Hokkaido University
• Principal Investigator: SENBU Osamu 北海道大学, 工学(系)研究科(研究院), 教授 (10236127)
• Co-Investigator(Kenkyū-buntansha): HASEGAWA Takuya 北海道大学, 大学院工学研究院, 准教授 (30360465)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 凍害 / 限界飽水度法 / 含水率 / 劣化予測

Outline of Final Research Achievements

Various frost resistance evaluation methods are examined using burnt bricks, and problems of the methods becomes clear.
Estimation methods of the critical degree of saturation were discussed from data of water absorption test or one side water absorption freezing-thawing test using ceramic siding materials. A model building using ceramic siding materials was exposed outdoor and water contents of the materials were measured to determine position conditions. An investigation of actual building using ceramic siding materials was carried out, and it becomes clear that the deteriorated materials show high water content. The one side water absorption freezing-thawing tests with various test conditions were carried out, and it becomes clear that freezing-thawing action increases water content of the materials. Using some assumption, a prediction method of frost deterioration considering site conditions was proposed.

Free Research Field

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