XRD analysis and leachability of solidified phenol-cement mixtures

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Cement and Concrete Research; (United States)

DOI:https://doi.org/10.1016/0008-8846(93)90033-6· OSTI ID:6182231

Vipulanandan, C; Krishnan, S ^[1]

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1. Univ. of Houston, TX (United States). Department of Civil and Environmental Engineering

The microstructure and leachability of phenol from solidified phenol-Portland cement mixtures cured up to 6 months were investigated. Phenol was solidified with Type I Portland cement at concentrations of 0.5% and 2% by weight of the cement. XRD studies and pore fluid analyses indicate that phenol inhibits cement setting by reacting with the calcium hydroxide produced during the hydration of cement. Phenol leachability was studied using the Toxicity Characteristic Leaching Procedure (TCLP) test recommended by the U. S. EPA. The quantity of phenol leached is dependent on the initial phenol concentration and the curing time and a simple model has been proposed to predict the leachability. Phenol increases the initial and final setting times of cement. The compressive strength of the solidified cement-phenol mixtures decrease with increasing phenol content in the matrix and increase with curing time. The relationship between leaching of phenol and strength of cement-phenol mixtures has been verified.

• OSTI ID: 6182231
• Journal Information: Cement and Concrete Research; (United States), Journal Name: Cement and Concrete Research; (United States) Vol. 23:4; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

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54 ENVIRONMENTAL SCIENCES
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Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
ALKALINE EARTH METAL COMPOUNDS
AROMATICS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CEMENTS
CHEMICAL REACTIONS
COHERENT SCATTERING
COMPRESSION STRENGTH
CONCENTRATION RATIO
CURING
DIFFRACTION
DISPERSIONS
DISSOLUTION
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
LEACHING
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MIXTURES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHENOL
PHENOLS
PORTLAND CEMENT
PROCESSING
SCATTERING
SEPARATION PROCESSES
SOLIDIFICATION
WASTE MANAGEMENT
WASTE PROCESSING
X-RAY DIFFRACTION