Case Study on Determination of Tensile Properties of Construction Sealants at Variable Temperatures

Case Study on Determination of Tensile Properties of Construction Sealants at Variable Temperatures

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The authors of presented research case focused on possibilities of sealing porous as well as non – porous materials and analysed the measured results. It is the second article of the above mentioned authors dealing with sealed joints, however, in this case study the focus was placed on a group of industrially manufactured modified silyl polymer and polyurethane sealants. The research is based on the modified test procedure for the determination of adhesion and cohesion properties during maintained extension at variable temperatures, i.e. a high temperature of (70 + 2)°C and a temperature simulating freezing, i.e. (-20 + 2)°C, according to the European standard EN ISO 9047. The degree of specimen extension was set to amplitude of 20.0 % and the aim of the research case was to discover any differences that might appear in the resistance. The measured results demonstrate that there are significant differences between individual sealants in the results they provide in combination with specific material, e.g. wood appears to be a problematic substrate as well as glass cement or aluminium.

The authors of presented research case focused on possibilities of sealing porous as well as non – porous materials and analysed the measured results. It is the second article of the above mentioned authors dealing with sealed joints, however, in this case study the focus was placed on a group of industrially manufactured modified silyl polymer and polyurethane sealants. The research is based on the modified test procedure for the determination of adhesion and cohesion properties during maintained extension at variable temperatures, i.e. a high temperature of (70 + 2)°C and a temperature simulating freezing, i.e. (-20 + 2)°C, according to the European standard EN ISO 9047. The degree of specimen extension was set to amplitude of 20.0 % and the aim of the research case was to discover any differences that might appear in the resistance. The measured results demonstrate that there are significant differences between individual sealants in the results they provide in combination with specific material, e.g. wood appears to be a problematic substrate as well as glass cement or aluminium.

Adhesion, cohesion, compression, extension, freezing, polyurethane, variable temperature;

Adhesion, cohesion, compression, extension, freezing, polyurethane, variable temperature;

NEČASOVÁ, B.; LIŠKA, P.; ŠLANHOF, J.; ŠIMÁČKOVÁ, M.

2017

28.01.2016

Trans Tech Publications

Switzerland

978-80-227-4469-0

enviBUILD 2015

1660-9336

Applied Mechanics and Materials

824

1

Švýcarská konfederace

18

26

9