Process and Impacts of Soil Compaction John Chapman Program - PowerPoint PPT Presentation

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Process and Impacts of Soil Compaction John Chapman Program Director Erosion and Stormwater Management Certification Program Bioproducts and Biosystems Engineering Department University of Minnesota chapm155@umn.edu Clean Water Summit

Process and Impacts of Soil Compaction John Chapman Program Director Erosion and Stormwater Management Certification Program Bioproducts and Biosystems Engineering Department University of Minnesota chapm155@umn.edu Clean Water Summit September 13, 2012
http://adventuresofacouchsurfer.wordpress.com/tag/dalton-gang/
Basic Definitions
Soil Components • Voids • Solids
Soil Components • Voids • Solids
Soil Components • Voids – Air – Water • Solids
Soil Components • Voids – Water • Solids
Soil Components • Voids – Air – Water • Solids – Particle Size – Gravel, Sand, Silt, Clay – Loam – Organics
Dry or wet sand? http://flickr.com/photo/56844661@N00 /4846203074
Photo from: Dr. Kovacevic, Geotechnical Consulting Group London
Compaction
Caterpillar 815F Soil Compactor Wacker Neuson Vibratory Plate Compactor
Moisture Density Relationship mass/volume Soil Density Moisture Content
Moisture Density Relationship Maximum Density mass/volume Soil Density Optimum Moisture Moisture Content
Moisture Density Relationship mass/volume Soil Density Moisture Content
From: www.extension.umn.edu/distribution/crop systems/dc3115.html
Soil clods
From: www.extension.umn.edu/distribution/crop systems/dc3115.html
Cone Index of Construction Site Soils • Rooting Limited at 2000 to 2500 kPa • Silty Loam 5000 kPa • Sandy Loam at surface 2000 kPa • Sandy Loam at 12 inches 3000 kPa
Thank You

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