Stabilization of geothermal residues by encapsulation in polymer concrete and portland cement mortar composites
Presented are the results from the preliminary phase of a laboratory test program conducted to identify and evaluate materials for converting hazardous geothermal residues to a non-hazardous and potentially usable form. Laboratory test results indicate that geothermal residues can be effectively incorporated, as a fine aggregate, into polymer concrete (PC) and portland cement mortar (PCM) composites. PC composites made using an emulsifiable polyester resin and a methyl methacrylate (MMA)-based monomer system exhibited compressive strengths varying between 3700 and 16,500 psi (25.5 and 113.8 MPa), depending upon the type of binder used and the moisture content of the residue. Waste extraction tests (WET) performed on ground samples of the composites indicate elemental levels of leachable heavy metals are below specified soluble threshold limit concentrations (STLC), thereby allowing the composites to be classified as non-hazardous. PCM composites exhibited compressive strengths varying between 2875 and 5530 psi (19.8 and 38.1 MPa), depending upon the type, amount and moisture content of the residue. WET analysis indicates that all but one of the PCM composites evaluated can be classified as non-hazardous. 8 tabs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5490429
- Report Number(s):
- BNL-40640; CONF-880350-1; ON: DE88006359
- Resource Relation:
- Conference: Technical symposium on polymer concrete, Orlando, FL, USA, 20 Mar 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
COMPOSITE MATERIALS
COMPRESSION STRENGTH
LEACHING
CONCRETE-PLASTIC COMPOSITES
GEOTHERMAL FLUIDS
ENCAPSULATION
GEOTHERMAL POWER PLANTS
WASTE PROCESSING
RESIDUES
PORTLAND CEMENT
WASTE PRODUCT UTILIZATION
BUILDING MATERIALS
CEMENTS
DISSOLUTION
FLUIDS
MANAGEMENT
MATERIALS
MECHANICAL PROPERTIES
POWER PLANTS
PROCESSING
SEPARATION PROCESSES
THERMAL POWER PLANTS
WASTE MANAGEMENT
Geothermal Legacy