*2.4. Mechanical and Durability Properties of Eco-Friendly Ternary Concrete Mixtures* 2.4.1. Compressive Strength

Compressive strength is the parameter or property of the mechanical behavior of hydraulic concrete most necessary for the structural design of civil infrastructure built on the basis of reinforced concrete. Compressive strength testing was carried out according to the NMX-C-083 ONNCCE standard [52], for which specimens were manufactured using cylindrical steel molds of 100 × 200 mm. After 24 h they were removed from the molds and placed in a curing tank according to the NMX-C-ONNCCE standard [53]. The specimens of the six study mixtures were tested at the ages of 7, 14, 28, 90 and 180 days using a loading rate of 0.3 MPa/s (see Figure 2). The compressive strength values analyzed in the results section are the average of the values of three specimens of each mix of concrete.

**Figure 2.** Compressive Strength Test.
