A rigid block model with no-tension elastic contacts for displacement-based assessment of historic masonry structures subjected to settlements

2021 ◽  
Vol 229 ◽  
pp. 111609
Author(s):  
R. Gagliardo ◽  
F.P.A. Portioli ◽  
L. Cascini ◽  
R. Landolfo ◽  
P.B. Lourenço
Keyword(s):  
Masonry Structures ◽  
Rigid Block ◽  
Block Model ◽  
Historic Masonry ◽  
Displacement Based

EFFECT OF WET-DRY CYCLING ON BOND BEHAVIOR OF GFRP STRENGTHENED HISTORIC MASONRY STRUCTURES

2016 ◽  
Vol 78 (5-2) ◽  
Author(s):  
Meng Jing ◽  
Werasak Raongjant
Keyword(s):  
Research Work ◽  
Fiber Reinforced Polymer ◽  
Masonry Structures ◽  
Test Results ◽  
Bond Behavior ◽  
Historic Masonry ◽  
Water Permeation ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Cycling Condition

The objective of this research work is to determine the effect of wet-dry cycling on bond behavior of historic masonry structures strengthened by Glass Fiber Reinforced Polymer (GFRP). Shear bond testing was carried out through total 36 specimens exposed to dry, full moisture or wet-dry cycling conditions.  The selected samples were then tested at 0, 30, 60 and 90 days. Post-ageing test was also preceded on total sixty masonry prisms exposed to dry, full moisture or wet-dry cycling conditions. The compressive strengths of selected samples were then tested at 0, 40, 70 and 100 days. The test results showed an obvious decrease of the bond strength between GFRP sheets and bricks in the wet-dry cycling condition. For masonry prisms with or without GFRP strengthening, in the first 40 days, the compressive strength of GFRP bonded prism decreased quickly to the value near that of prism without GFRP. After 40 days the rate of decrease became slow, which means that, sheets retrofitted outside the masonry prisms helped to improve their durability by reducing water permeation. 

Success and Failure in Applying ASTM Standards to the Evaluation and Rehabilitation of Historic Masonry Structures—A Case Study

Masonry 2014 ◽  
2014 ◽  
pp. 152-181
Author(s):  
Julia E. Mathias Manglitz ◽  
K. Vance Kelley ◽  
Mark Hodges
Keyword(s):  
Masonry Structures ◽  
Historic Masonry
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