TY  - JOUR
AU  - Yang, Tao
AU  - Li, Xingru
AU  - Liu, Shuailei
AU  - Zhao, Hao
AU  - Yan, Meimei
PY  - 2024
TI  - Mechanical Property Testing and Microscopic Mechanism Exploration of Solidified Soil Materials
JO  - Chinese Journal of Underground Space and Engineering
SN  - 1673-0836
SP  - 848
EP  - 856
VL  - 20
IS  - 3
AB  - The construction and development of urban rail transit and underground space produce a large amount of shield muck. However, the traditional muck treatment method brings great challenges to the ecological environment and resource protection. In view of this, the Recycled Solidified Soil-Engineering Residue (RSS-ER) prepared by combining cementitious materials with shield muck effectively solves this problem. Under the premise of ensuring that the water-solid ratio is 0.35, mineral powder, fly ash and silicon powder are selected for different orthogonal combinations, and the fluidity test, unconfined compressive strength test and microstructure test of RSS-ER with different mixing ratios are carried out. Research shows that fluidity of RSS can meet the requirements of filling materials in general backfill engineering; the unconfined compressive strength of RSS-ER is positively related to the curing time, and the strength of the specimen cured at room temperature is higher than that of specimens cured under water; the pores between the slag skeletons are filled with the hydration products C-S-H gel and C-A-S-H gel, which is the reason why the integrity and strength of RSS-ER are improved.
UR  - https://doi.org/10.20174/j.JUSE.2024.03.14
DO  - 10.20174/j.JUSE.2024.03.14