Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil

In order to explore the modification effect of carbonization time on nano-MgO-modified cement soil, unconfined compressive strength tests soil with times 0 h, 6 1 d, 2 d and 4 were carried out. A method for normalizing stress–strain curve was proposed, influence nano-MgO content investigated from three aspects strength, peak strain energy dissipation. The test results show following: (1) modified can be significantly improved by adding 1.0% after carbonization. (2) Under same content, reaches maximum, which increase its ductility. However, has little soil. (3) dissipation rate better resist damage external load.