2. Experimental program
The experimental study was carried out on 27 concrete cylinders of three different
sizes. The height and diameter of the cylinders were 300 mm, 200 mm,
150 mm; and 150 mm, 100 mm, 75 mm, respectively. Nine cylinders were prepared
for each size; three of them were kept non-jacketed (denoted as NJ); three were
jacketed with ferrocement having a single layer wire mesh; and the rest three were
jacketed with ferrocement having a double layer wire mesh. The thickness of the
external ferrocement jacket was kept constant (12.5 mm) for the jacketed specimens
of all sizes. The external jacket was consisted of single or double layer welded
wire mesh infiltrated with mortar. In general, 150 mm diameter specimens are designated
as LS, 100 mm diameter specimens are designated as MS, and 75 mm diameter
specimens are designated as SS. Fig. 1 demonstrates the details of the test
specimens. The specifications of the specimens are shown in Table 1.