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A thermodynamic model for blended cements

Technical Report:

Abstract

A chemical thermodynamic model has been developed for blended cements, called CEMCHEM. Given the chemical compositions of the blend materials, CEMCHEM calculates the equilibrium phase distribution, achieved at 25{sup o}C. It is based on a portion of the CaO-Al{sub 2}O{sub 3}- SiO{sub 2}- SO{sub 3}- H{sub 2}O system, whose phase relations have been determined from the results of `compatibility experiments`. Solubility models have been developed for the cement hydrate phases used in CEMCHEM, for use with the computer codes MINEQL, PHREEQE and EQ3/6. Validation of the overall approach is provided by the agreement between observed and calculated aqueous compositions for the compatibility experiments. Thus CEMCHEM, with the cement hydrate solubility models, can be used as the basis for modelling near field chemistry in cementitious radwaste repositories. (author).
Authors:
Atkins, M; Glasser, F; Kindness, A; [1]  Bennett, D; Dawes, A; Read, D [2] 
  1. Aberdeen Univ. (United Kingdom)
  2. Atkins (W.S.) Engineering Sciences Ltd., Warrington (United Kingdom)
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
DOE-HMIP-RR-92.005
Reference Number:
SCA: 052002; PA: AIX-24:007801; SN: 93000932576
Resource Relation:
Other Information: PBD: 1992
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CEMENTS; PHASE STUDIES; RADIOACTIVE WASTE DISPOSAL; THERMODYNAMIC MODEL; COMPUTER CODES; LEACHING; SOLUBILITY; TEMPERATURE RANGE 0273-0400 K; 052002; WASTE DISPOSAL AND STORAGE
OSTI ID:
10119211
Research Organizations:
Department of the Environment, London (United Kingdom). Her Majesty`s Inspectorate of Pollution
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ON: DE93612745; CNN: Contract PECD-7/9/503; TRN: GB9203547007801
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
GBN
Size:
[188] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Atkins, M, Glasser, F, Kindness, A, Bennett, D, Dawes, A, and Read, D. A thermodynamic model for blended cements. United Kingdom: N. p., 1992. Web.
Atkins, M, Glasser, F, Kindness, A, Bennett, D, Dawes, A, & Read, D. A thermodynamic model for blended cements. United Kingdom.
Atkins, M, Glasser, F, Kindness, A, Bennett, D, Dawes, A, and Read, D. 1992. "A thermodynamic model for blended cements." United Kingdom.
@misc{etde_10119211,
title = {A thermodynamic model for blended cements}
author = {Atkins, M, Glasser, F, Kindness, A, Bennett, D, Dawes, A, and Read, D}
abstractNote = {A chemical thermodynamic model has been developed for blended cements, called CEMCHEM. Given the chemical compositions of the blend materials, CEMCHEM calculates the equilibrium phase distribution, achieved at 25{sup o}C. It is based on a portion of the CaO-Al{sub 2}O{sub 3}- SiO{sub 2}- SO{sub 3}- H{sub 2}O system, whose phase relations have been determined from the results of `compatibility experiments`. Solubility models have been developed for the cement hydrate phases used in CEMCHEM, for use with the computer codes MINEQL, PHREEQE and EQ3/6. Validation of the overall approach is provided by the agreement between observed and calculated aqueous compositions for the compatibility experiments. Thus CEMCHEM, with the cement hydrate solubility models, can be used as the basis for modelling near field chemistry in cementitious radwaste repositories. (author).}
place = {United Kingdom}
year = {1992}
month = {Dec}
}