不同配合比条件下水泥土力学特性研究

Study on the Mechanical Properties of Cement Soil under Different Mix Proportions

文中通过正交试验法研究了水泥、矿粉、粉煤灰掺量以及养护龄期对水泥土无侧限抗压强度的影响。结果表明,水泥土硬化过程中,水泥掺量对其无侧限抗压强度的影响最为显著;水泥掺量18%、矿粉掺量12%及粉煤灰掺量12%时,水泥土强度最大。较小水泥掺量下,水泥土强度增加明显,随着水泥掺量持续增加,水泥土强度增速趋缓;随着矿粉掺量的增加,水泥土强度呈现先增加后降低的趋势;而随着粉煤灰掺量的增加,水泥土强度呈现先降低后增加的趋势。

The influence of cement,mineral powder,fly ash content,and curing age on the unconfined compressive strength of cementitious soil was studied through orthogonal experimental method.The results show that the cement content has the most significant impact on the unconfined compressive strength of cementitious soil during the hardening process.;When the cement content is 18%,the mineral powder content is 12%,and the fly ash content is 12%,the cement soil strength is the highest.Under a smaller cement content,the strength of cementitious soil increases significantly.As the cement content continues to increase,the growth rate of cementitious soil strength slows down;With the increase of mineral powder content,the strength of cementitious soil shows a trend of first increasing and then decreasing;With the increase of fly ash content,the strength of cementitious soil shows a trend of first decreasing and then increasing.