Test Research on the Strength of Ni-Fe Slag Powder Soil-cement at Early-ages

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Chen, Feng^1

Engineering School, Fujian Jiangxia University, Fuzhou, Fujian

350108, China^1

关键词: Early age;    Early strength;    Failure strain;    Reduction rate;    SEM test;    Slag powder;    Test research;    Unconfined compressive strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/3/032018/pdf
DOI  :  10.1088/1757-899X/490/3/032018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to study the effect of incorporation of Ni-Fe slag powder into soil-cement on its early strength, the unconfined compressive strength test and SEM test at 7d age and 28d age were conducted on the soil-cement with incorporation of 0%, 10%, 20%, 30% and 40% of Ni-Fe slag powder respectively. The test results showed that the soil-cement strength decreased with the increase in the content of Ni-Fe slag powder, especially at the age of 7d, the soil-cement strength decreased significantly, and the failure strain was also large, showing greater plasticity; at the age of 28 days, the reduction rate of soil-cement strength gradually decreased. Therefore, the contribution of Ni-Fe slag powder to the soil-cement strength was very small at the age of 7d, and it only gradually played its role at the age of 28d.