Evaluation of a soil fixative to retard particle entrainment: A laboratory study
We evaluated the effectiveness of liquid spray treatments to reduce particle entrainment and migration from soil surfaces. To simulate particle entrainment from a soil surface, we performed controlled experiments in a laboratory wind tunnel using artifically prepared soil surfaces. The experimental testing included three soil treatments, three soil types, and four wind speeds. The soil treatments were a spray application of a 4% water-based flour formulation, a spray application of water only, and no spray treatment. The water-only spray and no spray conditions served as controls for evaluating the treatment with the flour formulation. We also investigated the effect of aging the soil surfaces under hot and dry conditions. In addition, we evaluated a quantitative assessment of the treatments` effectiveness to retard particle movement from the soil surface for both respirable particles from 0.3- to 8.0-{mu}m-in. diameter and larger nonrespirable particles. We varied wind velocities from 2 to 16 m/s (5 to 35 mph). In the wind-tunnel testing, we used three soils -- 54% clay, 72% silt, and 78% sand. Preparation of the soil surfaces simulated the behavior of an unpacked soil whose surface is exposed to a gust of wind. Spray applications of the treatments to the soil surfaces were typically 8 to 15 mg/cm{sup 2}.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10146700
- Report Number(s):
- UCRL-LR-109806; ON: DE92014836
- Resource Relation:
- Other Information: PBD: 26 Dec 1991
- Country of Publication:
- United States
- Language:
- English
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