Briefing: Water content determinations of peaty soils using the oven-drying method
Item Type:Journal Article
Citation:Li W., O'Kelly B.C., Fang K. and Yang M., Briefing: Water content determinations of peaty soils using the oven-drying method, Environmental Geotechnics, 9, 1, 2022, 3 - 11
In order to prevent possible charring, oxidation and (or) vaporisation of substances other than pore water, many researchers have adopted oven-drying temperature (t) values in the range 60–90°C for water content determinations of peat and other highly organic soils. This paper investigates the oven-drying characteristics of six very different highly decomposed peaty soils retrieved from south-west China for t values of 65, 85 and 105°C. Based on the presented experimental data, it is concluded that the standardised t value of 105°C used for testing of inorganic soil is also appropriate (and preferable to using lower t values) for routine water content determinations of these soils, which is in line with the growing consensus formed by other researchers on this topic. Further, the authors recommend a wet specimen mass of approximately 50 g and a 24 h oven-drying period in performing the oven-drying tests for t = 105°C. The paper also describes an existing approach to comparing and standardising water content values determined for the same organic soil, but on the basis of different t values, with the new data presented herein for the six Chinese soils used to strengthen its wider applicability in geotechnical engineering practice and related fields.
Part of the In-focus issue 'Geotechnical aspects of peatland restoration and management'
Author: O'Kelly, Brendan
Type of material:Journal Article
Series/Report no:Environmental Geotechnics
Availability:Full text available
Subject (TCD):Smart & Sustainable Planet , DRY-MATTER , DRYING TECHNIQUE , Environmental Geotechnics , Geotechnical Engineering , Geotechnics , MOISTURE-CONTENT , SOIL WATER , SOIL-MOISTURE , Soil Mechanics , Soil Mechanics & Foundations , WATER-CONTENT , geotechnical