TY  - EJOU
AU  - Li, Ke 
AU  - Liu, Bendong 
AU  - Han, Yulong 
AU  - Zhang, Yafeng 
AU  - Yang, Chunqi 
AU  - Yin, Dawei 
AU  - Zhang, Yazhou 
AU  - Ding, Wantao 

TI  - Optimization of Cement-Based Slurry Mix Design Incorporating Silica Fume for Enhanced Setting and Strength Performance
T2  - Fluid Dynamics \& Materials Processing

PY  - 2025
VL  - 21
IS  - 11
SN  - 1555-2578

AB  - Traditional cement-based slurries are often constrained by excessive cement consumption, prolonged setting times, and limited controllability, which hinder their broader engineering applications. To overcome these challenges, this study focuses on optimizing ordinary cement-based slurry through the incorporation of targeted additives and rational adjustment of mix proportions, with the aim of developing a rapid-setting, early-strength cementitious system. In particular, a series of comparative and orthogonal experiments were conducted to systematically examine the evolution of the slurry’s macroscopic properties. In addition, the response surface methodology (RSM) was introduced to reveal the interaction mechanisms among key parameters, thereby establishing a quantitative foundation for the precise regulation of slurry performance. The comparative results demonstrate that silica fume significantly outperforms fly ash in enhancing both the rheological and mechanical behavior of the slurry. Regarding fluidity, the average consistency and slump of the silica fume mixture were reduced by 80 mm and 75 mm, respectively, compared with those containing fly ash, indicating more effective control of flowability. In terms of setting and strength development, the silica fume slurry exhibited a setting time up to 9.6 h shorter and a compressive strength up to 3.6 MPa higher under identical mix conditions. These results confirm the clear superiority of silica fume in promoting rapid solidification and early strength gain.
KW  - Grouting material; silica fume; orthogonal test; comparison test

DO  - 10.32604/fdmp.2025.072671