EXCESS FOUNDRY SAND CHARACTERIZATION AND EXPERIMENTAL INVESTIGATION IN CONTROLLED LOW-STRENGTH MATERIAL
Open Access
- Author:
- Deng, An
- Graduate Program:
- Civil Engineering
- Degree:
- Doctor of Philosophy
- Document Type:
- Dissertation
- Date of Defense:
- July 01, 2004
- Committee Members:
- Paul J T Ikalsky, Committee Chair/Co-Chair
Barry Earl Scheetz, Committee Member
Mian C Wang, Committee Member
Raymond Regan Sr., Committee Member
Andrew Scanlon, Committee Member - Keywords:
- censored data
CLSM
characterization
excess foundry sands
experimental investigation
survival function - Abstract:
- The objective of this dissertation is to provide support with technical data for the reuse of excess foundry sand. The dissertation addresses two topics: a statistical sound evaluation of the characterization of foundry waste streams, and a laboratory investigation to qualify excess foundry sand as a major component in controlled low-strength material (CLSM). The survival analysis statistical technique is developed for processing censored characterization data with significant confidence. Using this methodology, supported by abundant characterization datasets, foundry waste streams are characterized in full spectrum of general chemical parameters, metallic elements and organic compounds regarding bulk analysis and leachate characterization. Not limited to characterization and environmental impact, foundry waste streams are evaluated by factor analyses, which contributes to proper selection of factor and maximization of reuse marketplace of foundry waste streams. Excavatable CLSM and structural CLSM containing different types of excess foundry sands are investigated through laboratory experiments. Technical data regarding physical characteristics of excess foundry sands, design, behavior, performance and environmental impact of fresh and hardened CLSM are presented in details. Wide span of parameters are analyzed to evaluate the qualification of integrating excess foundry sands into CLSM.