Appropriate combination of viscosity and application tool to ensure appropriate film thickness and good workability of fluid-applied polyurethane waterproofing membrane

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18159
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Chiba Institute of Technology
• Principal Investigator: ISHIHARA Saori 千葉工業大学, 創造工学部, 准教授 (00589046)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 建築材料 / ウレタン塗膜防水 / 耐久性 / 膜厚 / 施工性 / 粘度 / 施工具 / 官能検査

Outline of Final Research Achievements

In recent years, fluid-applied polyurethane membranes have been widely used in waterproofing repairs. The most important quality is thickness. Several factors can influence the accuracy and variability of thickness, including the state of a concrete substrate, liquid polyurethane viscosity, application tool, and so on.
The purpose of this study is to examine the effects of liquid polyurethane viscosity and the application tool on thickness and workability for ensuring the appropriate thickness with good workability.
The experiments were carried out by dividing into flat part and vertical part. The flat part was 40 ways, and the vertical part was carried out in 18 ways. Thickness was measured at 50mm intervals, and the workability under each condition was evaluated by sensory tests using the method of successive categories. As a result, it was clarified that the combination of viscosity and application tool which can secure appropriate film thickness with good workability is very limited.

Free Research Field

建築材料