Effects of the Incorporation of Municipal Solid Waste Incineration Fly Ash in Cement Pastes and Mortars. II: Modeling

Published

April 1, 2002

Author(s)

S Remond, Dale P. Bentz, M. Pimpinella

Abstract

This work falls within the scope of a general problem of the assessment of concretes manufactured from waste materials. The main objective is to study the long-term evolution of these materials during leaching using the cellular automata- based hydration model developed at the National Institute of Standards and Technology (NIST). The work is based on the analysis of mortars and cement pastes containing an experimental waste: Municipal Solid Waste Incineration fly ash (MSWI fly ash). After having determined the mineralogical composition of the MSWI fly ash and its interactions with cement during hydration, presented previously as Part 1, the phases comprising the fly ash have been incorporated into the hydration model. The increase in porosity of cement pastes containing MSWI fly ash during leaching has then been simulated. Finally, a simplified leaching model has been developed to study the influence of the changes in microstructure on the release of calcium and sodium.

Citation

Cement and Concrete Research

Volume

32

Issue

No. 4

Pub Type

Journals

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Keywords

blended cements, building technology, durability, fly ash, hydration, microstructure, modelling, waste materials

Citation

Remond, S. , Bentz, D. and Pimpinella, M. (2002), Effects of the Incorporation of Municipal Solid Waste Incineration Fly Ash in Cement Pastes and Mortars. II: Modeling, Cement and Concrete Research, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860294 (Accessed October 15, 2025)