Strength test of steel slag powder - ground granulated blast-furnace slag powder - fly ash - cement solidified soft soil

The article replaces part of cement with SS, GGBS and FA to reinforce marine soft soil. Through the unconfined compressive strength (UCS) test, the SS-GGBS-FA-cement solidified soil and cement solidified soil were compared and analyzed. The study found that when m(SS): m(GGBS): m(FA) is 1:2:1, 28d and 90d SS1GGBS2FA1 + cement solidified soil has the highest strength, and exceeds that of single cement solidified soil. With the increase of GGBS content, the strength of solidified soil tends to increase. GGBS is more helpful to improve the strength of solidified soil, while the effects of SS and FA are not as good as GGBS. SS1GGBS2FA1 + cement solidified soil can significantly improve the strength of the soil and the strain characteristics during failure, and improve the brittle failure mode of cement soil.