2.4.2. Analysis of Tensile Strength in Flexion and Compression

For this test, guided by the ABNT NM 13279 [32] standard, it was necessary to prepare 3 prismatic parts for each mix, using Portland cement types CP II, CP III and CP V, with cures of 7, 14 and 28 days, in the different substitutions of sand by OSPW (10%, 30% and 60%).

After completing the curing days, the prismatic parts were subjected to flexural and compressive strength tests, using an EMIC 26–30 universal testing equipment with a maximum force of 30 kN. First, the flexural tensile strength test was performed, where the prismatic parts were positioned in the machine in order to avoid contact between the flat surface and the supporting and loading components.

Then, to run the compressive strength test, the halves of each part of the flexural test were used and also positioned in the machine in order to avoid contact between the flat surface and the supporting and loading components.
