Table 2 Amount of material added and experimental design
From: Effect of polymer water retaining agent on physical properties of silty clay
Test group | SAR addition, mass ratio (%) | Test method | Obtaining parameters | ||||
|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |||
Test contents | |||||||
Aggregate characteristic | 0 | 0.025 | 0.03 | 0.035 | 0.04 | Dry/Wet sieve method | Water-stable and non-water-stable aggregate content, aggregate fractal dimension and stability coefficient |
Water characteristic | 0 | 0.025 | 0.03 | 0.035 | - | Filter method | Soil–water characteristic curve, water holding capacity and effective water content |
Microstructure | 0 | 0.025 | 0.03 | 0.035 | - | SEM + Data analysis | Microstructure photos and pore distribution |
Mechanical characteristics | 0 | 0.025 | 0.03 | 0.035 | 0.04 | Direct-shear | Shear strength, cohesion, internal friction angle |