Assessment of Improved Pulverizer Technology

2. Assessment of Improved Pulverizer Technology Objective – Identify existing pulverization technology and develop criteria for utilizing these technologies for rapid stabilization of soil layers used in airfield construction. Scope - Evaluate the three types of pulverization/stabilization rotors. Equipment was evaluated on three different material types located at WES.

3. Plan/Progress/Approach Plan (FY03) Evaluate performance of different rotor types on various materials Materials used for evaluation CH (heavy clay, buckshot) ML (low plasticity clay) SP (poorly graded sand) Types of pulverizers / mixers Tine type mixer Soil stabilization type Combination Plan (FY04) Evaluate performance of selected rotor on mixing liquid or powder stabilizing agents Participate in FY04 Demonstration Optimize number of tests – this is balancing the number of tests with knowledge of the construction material. Few tests will be best for time concerns. Many tests will provide the most knowledge. Identify significant spatial differences – if there is a relatively weak area within a “feature”, it must be strengthened. If the entire feature is immediately considered as a single population, the weak area may go undetected. All weak measurements within an area is a much different situation than when weak measurements are scattered throughout a feature. Optimize number of tests – this is balancing the number of tests with knowledge of the construction material. Few tests will be best for time concerns. Many tests will provide the most knowledge. Identify significant spatial differences – if there is a relatively weak area within a “feature”, it must be strengthened. If the entire feature is immediately considered as a single population, the weak area may go undetected. All weak measurements within an area is a much different situation than when weak measurements are scattered throughout a feature.

4. Pulverizer Types

5. Pulverizer Types

6. Pulverizer Types

7. Pulverizer Types

8. Pulverizer Types

9. Product Description – Identification of pulverizer equipment that can be used for rapid soil stabilization during airfield construction. Equipment requirements along with procedures for optimum usage will be documented. FY04 Demonstration – Equipment will be selected and taken to FY04 demonstration to provide a critical step in the stabilization process Transition Medium – Input for Operational Requirement Document