Stress-strain model for hollow concrete block masonry under uniaxial compression

摘要

Accurate evaluation of the stress-strain relationship of hollow concrete block masonry is essential for the detailed analysis and reliable design of hollow concrete block masonry structures. This paper presents the results of an investigation of the compressive stress-strain behavior of hollow concrete block masonry. Testing was carried out on 23 masonry wallettes constructed in the laboratory using four different block/mortar combinations. The failure mechanism and characteristics of stress-strain curves were studied. Simple relationships between the elastic modulus and corresponding compressive strength were identified. The mortar compressive strength, masonry compressive strength, and masonry elastic modulus were used to predict the peak strain. Finally, a new model for the stress-strain behavior of hollow concrete block masonry was developed and was found to yield predictions in good agreement with the experimental results and better than the predictions of other models.