2.3. Thermal and mechanical tests
The Isomet 2104 unit which works according to the hot wire methodology of
DIN 51046 is used to measure the thermal conductivities of the specimens. Its range
and sensitivity are 0.02–10 W/m K and ±5% of its scale, respectively [19]. The measurements
on three locations of each sample block are repeated three times to
reflect the average of nine values.
The mechanical strength tests on the samples are considered according to the
ASTM C 109-80 standard. The compressive strength tests are applied on each sample
block. The tensile strength values are calculated according to the TS 500 standard
by Eq. (1).