Experimental characterization of moisture transport in brick masonry with natural hydraulic lime mortar

In this paper, the effect of several brick and mortar mechanical and microstructural parameters on the maximum debonding force of the same glass fiber reinforced polymer (GFRP), applied on different bricks and on corresponding masonry panels, was investigated. GFRP sheets were bonded by epoxy resin to four different types of solid fired-clay brick and four types of masonry panels, manufactured using the same bricks and a natural hydraulic lime mortar. The reinforced specimens were subjected to bond tests to evaluate the maximum debonding force. Bricks and mortar were characterized in terms of compressive strength (in the case of bricks, along two different orthogonal directions), surface roughness and pore size distribution. Based on the results of the study, alongside brick mechanical properties in different directions, also brick microstructural parameters seem to play a very important role, which should be taken into account for fully explaining the experimental results.

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Confinement of Clay Masonry Columns with SRG

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.747.350 ◽

2017 ◽

Vol 747 ◽

pp. 350-357 ◽

Cited By ~ 15

Author(s):

Lesley H. Sneed ◽

Christian Carloni ◽

Giulia Baietti ◽

Giacomo Fraioli

Keyword(s):

Cross Section ◽

Compressive Load ◽

Load Test ◽

Steel Fibers ◽

Load Bearing Capacity ◽

Hydraulic Lime ◽

Lime Mortar ◽

Natural Hydraulic Lime ◽

Test Parameters ◽

Hydraulic Lime Mortar

In this study, the behavior of clay masonry columns confined by steel reinforced grout (SRG) composite with a natural hydraulic lime mortar is investigated. An experimental study was carried out to understand the behavior of masonry prisms with a square cross-section confined by SRG composite jackets subjected to a monotonic concentric compressive load. Test parameters considered in this study are the density of steel fibers and column corner radius. The effectiveness of the confinement is studied in terms of load-bearing capacity with respect to unconfined columns.

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Experimental Analysis on Bond Behavior of GFRCM Applied on Clay Brick Masonry

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.747.542 ◽

2017 ◽

Vol 747 ◽

pp. 542-549

Author(s):

Marianovella Leone ◽

Valeria Rizzo ◽

Francesco Micelli ◽

Maria Antonietta Aiello

Keyword(s):

Mechanical Performance ◽

Tensile Tests ◽

Brick Masonry ◽

Test Results ◽

Clay Brick ◽

Hydraulic Lime ◽

Bond Behavior ◽

Existing Structures ◽

Strength Failure ◽

Hydraulic Lime Mortar

External bonded reinforcements (EBR), made by fibrous meshes embedded in a cementitious/hydraulic lime mortar, are getting a great deal of attention, mostly for strengthening, retrofitting and repair existing structures. In this context, the interest versus the FRCM (Fiber Reinforced Cementitious Matrix) is growing. The mechanical performance of these mortar-based reinforcements is not well known at the date and it needs to be investigated in terms of bond and tensile strength, strain and stiffness, in relation to the type of both substrate and fibers. The present work reports the results of an experimental study, still in progress, on different pre-cured GFRP grids embedded in inorganic matrices and applied on clay brick masonry. First, the mechanical properties of both pre-cured GFRP grid and GFRCM reinforcements were obtained through tensile tests. Then, the experimental investigation on bond behavior was carried out by direct shear bond test. The test results were collected and processed to evaluate bond strength, failure mode, load-slip relationship.

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