New Bedford Harbor Superfund Project, Acushnet River Estuary Engineering Feasibility Study of Dredging and Dredged Material Disposal Alternatives. Report 9. Laboratory-Scale Application of Solidification/Stabilization Technology
Abstract
The technical feasibility of applying solidification/stabilization (S/S) technology to sediment from the New Bedford Superfund Site, New Bedford, MA, was investigated in laboratory studies. Sediment samples from the New Bedford site were solidified/stabilized using three selected processes: a generic process (portland cement), a generic process modified with a proprietary additive (portland cement with Firmix proprietary additive), and a proprietary process (Silicate Technology Corporation proprietary additive). The ability of these processes to eliminate or substantially reduce the pollutant potential of sediment from the New Bedford Superfund Site was evaluated on the basis of data from physical and chemical tests. Unconfined compressive strength (UCS) was the key test for physical stabilization, and sequential batch leach tests were the key tests for chemical stabilization. The UCS data showed that New Bedford sediment can be converted to a hardened mass. Conversion of dredged material from a plastic state to a solid monolith should reduce the accessibility of water to the contaminated solids. The range in 28-day UCS was 20 to 481 psi (0. 14 to 3.3 MPa). This range in product strength is indicative of the versatility of solidification as a physical stabilization process for New Bedford Harbor sediment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1989
- Accession Number
- ADA206744
Entities
People
- Mark E Zappi
- Tommy E. Myers