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ASTM WK95483

New Guide for determining and reporting the water content of coal combustion products for beneficial use

1. Scope
This guide covers lab and field methods to used determine the water content of coal combustion products. These methods include but are not limited to oven drying, moisture balances, thermogravimetric analysis, water content reflectometery, near infrared spectroscopy, and moisture meters. These methods are used to quantify the water in coal combustion products, and it may distinguish its form as free or chemically bound.
Keywords
moisture content; coal ash; FGD gypsum
Rationale

A range of field and lab methods are available to determine water content of CCPs. These methods offer tradeoffs between speed and cost. Furthermore, the water in coal combustion products may be present in free or chemically bound forms, and particular methods may or may not be suited to evaluate the water content depending on the forms of water present. Finally, the forms of water that are relevant may depend on the particular beneficial use under consideration. Therefore this guide will aims to describe the range of methods available and how water content methods may selected to support beneficial use.

Details

Developed by Subcommittee: E50.03

Committee: E50

Staff Manager: Molly Lynyak

Work Item Status

Date Initiated: 06-26-2025

Technical Contact: Robert Hageman

Item: 000

Ballot: 

Status: 

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