Tensile creep behaviour of LWA masonry
conference paper
Knowledge of masonry deformation caused by creep and
shrinkage is important when designing for crack resistance. The main purpose of the investigation presented was to study the creep behaviour of typical Norwegian masonry made of light expanded day aggregate (LECA) concrete blocks. Normally such masonry is built without mortar in the perpend joints. When the masonry is exposed to restrained shrinkage, an unpredictable tensile stress distribution may occur because of the free (open) joint. Instead of using creep tests under compression, specimens were loaded with constant uni-axial tensile stress in the longitudinal direction of the masonry. The ESPI measurements showed a relatively large opening of the free perpend joint, which was due to the stress distribution in the specimen. The creep coefficient obtained was especially large for the highest stress levels. The experimental study is presented in detail in [1]
shrinkage is important when designing for crack resistance. The main purpose of the investigation presented was to study the creep behaviour of typical Norwegian masonry made of light expanded day aggregate (LECA) concrete blocks. Normally such masonry is built without mortar in the perpend joints. When the masonry is exposed to restrained shrinkage, an unpredictable tensile stress distribution may occur because of the free (open) joint. Instead of using creep tests under compression, specimens were loaded with constant uni-axial tensile stress in the longitudinal direction of the masonry. The ESPI measurements showed a relatively large opening of the free perpend joint, which was due to the stress distribution in the specimen. The creep coefficient obtained was especially large for the highest stress levels. The experimental study is presented in detail in [1]
TNO Identifier
330285
ISSN
0950-9615
Source title
Proceedings 6th International Masonry Conference, London, UK, 4-6 September / British Masonry Society
Pages
267-271
Files
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