Description Of Test Models

Laboratory tests were conducted on 7 brick arches (0.12 m thick, 0.77 m wide, 4 m span and 2 m radius each - as in Fig. 1 and Fig. 2). Barrel arches built of materials of characteristics similar to those of materials in historical objects (full ceramic bricks of class 100 and pure lime mortar). Static pattern of support and loading realized in the same way in all the arches tested.

All of the arches models underwent monotonically increasing static loading which was realized on the entire width of the arch, 1/3 by an actuator until the destruction of the arch.

Each arch was reinforced in a different way:

- A1 model - the arch without any reinforcement -witness arch,

Figure 4. Model and arch A2.

- A2 model - the arch reinforced with FRCM -Ruredil X Mesh C10 carbon fibre screen set in the Ruredil X Mesh M 25 mortar on the side of the ridge,

- A3 model - the arch reinforced with 2 CFRP S&P Lamelle CFK 150/2000 carbon tapes (100/1.4 intersection) placed in a 40 cm axial spacing and with FRCM material - Ruredil X Mesh C10 carbon fibre screen set in the Ruredil X Mesh M 25 mortar on the side of the ridge,

- A4 model - the arch reinforced with FRCM -Ruredil X Mesh C10 carbon fibre screen set in the Ruredil X Mesh M 25 mortar on the side of the ridge and on the intrados side,

- A5 model - the arch reinforced with 0 8 steel bars, set in furrows made in the ridge surface of brick arch, put ins with glue made on the basis of Epidian 5 epoxide resin,

- A6 model - the arch reinforced with 2 CFRP S&P Lamelle CFK 150/2000 carbon tapes (100/1.4 intersection) glued in a 40 cm axial spacing on the side of the ridge,

- A7 model - the arch reinforced with a girder made of GL24 glued wood, joined with the brick arch by the use of 0 8 steel anchors glued on the side of the ridge.

Figures 3-5 present a diagrammatic way of enforcing compared with a real view of another arch.

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