*6.1. Conclusions*

Through the unconfined compressive strength tests, the influence of different nano-MgO contents and carbonization times on MCS was explored from the three aspects of compressive strength, peak strain and energy dissipation. The following conclusions can be drawn:

(1) A method for normalizing the stress–strain curve was proposed, and the normalized curve had a good correlation with the five stress–strain curves obtained through the tests.

