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Evaluation of Automotive Varnish as a Coating for Density Measurements of Soil Clods
Author(s) -
Almeida B. G.,
Silva A. P.,
Raine S.R.,
Figueiredo G.C.
Publication year - 2009
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj2008.0191
Subject(s) - varnish , coating , bulk density , materials science , soil water , significant difference , automotive industry , composite material , environmental science , soil science , mathematics , physics , statistics , thermodynamics
Saran F‐310 resin (Dow Chemical Co, Midland, MI) has been widely used to coat soil clods for density and size measurements; however, the manufacturer has recently stopped producing this resin and supplies are difficult to obtain. Hence, we evaluated the feasibility of using Lazzudur 7502 (Sherwin‐Williams, Cleveland, OH) automotive varnish to coat soil clods for density measurement. Preliminary evaluations showed that immersion of clods in the varnish did not affect clod cohesion and that a single immersion in Lazzudur with 30 min of post‐immersion drying produced density results not significantly ( P < 0.05) different to those obtained using saran. This technique was tested across seven soils and no significant ( P < 0.05) difference was found in the density of the clods measured using the two coating methods. This work suggests that automotive varnish can be used as an alternative to saran resin for clod density measurements.