A calorimetric and microstructural study of solidified toxic wastes. Part 1: A classification of OPC/waste interference effects

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Waste Management; (United States)

DOI:https://doi.org/10.1016/0956-053X(94)90031-0· OSTI ID:6657806

Hills, C D; Sollars, C J; Perry, R ^[1]

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1. Imperial Coll. of Science, Technology and Medicine, London (United Kingdom). Centre for Environmental Control and Waste Management

Ordinary Portland cement (OPC) has been used to solidify hazardous waste for about 25 years. The effects of waste components on the hydraulic activity of his binder have been subject to increasing research. Under certain circumstances, as yet to be defined, the hydration reactions thought responsible for solidification can be poisoned and appear to be retarded indefinitely. In this study, a number of wastes known to be capable of poisoning hydration were added to OPC and the effects were examined by conduction calorimetry and microstructural analysis techniques. A comparison of results showed that it was possible to classify waste/OPC interactions by phase development and the heat of hydration evolved. During the second part of this work, which is reported separately, the individual wastes were characterized, and the individual components identified as significant were added to OPC in single and combined additions. A comparison of results showed that it was possible to reproduce the poisoning effects observed.

• OSTI ID: 6657806
• Journal Information: Waste Management; (United States), Journal Name: Waste Management; (United States) Vol. 14:7; ISSN WAMAE2; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
BUILDING MATERIALS
CALORIMETRY
CEMENTS
CHEMICAL COMPOSITION
HAZARDOUS MATERIALS
HYDRATION
INHIBITION
MANAGEMENT
MATERIALS
MICROSTRUCTURE
PHASE TRANSFORMATIONS
PORTLAND CEMENT
PROCESSING
REMEDIAL ACTION
SOLIDIFICATION
SOLVATION
TECHNOLOGY ASSESSMENT
TOXIC MATERIALS
WASTE MANAGEMENT
WASTE PROCESSING