Effects of Organic Matter on Physical, Strength, and Volume Change Properties of Compost Amended Expansive Clay

Effects of Organic Matter on Physical, Strength, and Volume Change Properties of Compost Amended Expansive Clay

In recent years, the recycling and composting of municipal solid wastes has gained acceptance as an alternative to landfilling and incineration. Compost materials have been used as soil amendments in landscaping, erosion control, expansive soil treatment, and turf management. Compost amended soils a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of geotechnical and geoenvironmental engineering Vol. 133; no. 11; pp. 1449 - 1461
Main Authors: Puppala, Anand J, Pokala, Sharmi P, Intharasombat, Napat, Williammee, Richard
Format: Journal Article
Language:English
Published: New York, NY American Society of Civil Engineers 01-11-2007
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Miscellaneous
Soil investigations. Testing
TECHNICAL PAPERS
Clay
Volumetric analysis
Organic matter
Clays: Solid wastes
Experimental study
Physical properties
Characterization
Composting
Soil test
Expansive soils
Solid waste
Volume change
Expansive soil
Strength
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In recent years, the recycling and composting of municipal solid wastes has gained acceptance as an alternative to landfilling and incineration. Compost materials have been used as soil amendments in landscaping, erosion control, expansive soil treatment, and turf management. Compost amended soils are enriched with decomposed organic matter and hence usually exhibit different strength and compressibility in soil behaviors. An experimental investigation was carried out on compost amended soils to understand the effects of decomposed organic matter on strength and volume change properties. Two types of composts, a biosolids compost and a dairy manure compost, and a control cohesive soil were chosen as test materials. Tests conducted on these materials showed that the presence of organic matter enhanced shrinkage resistance and shear strength at low compost proportions (20–30%). At high proportions (beyond 30%), the shear strength reached plateau conditions. One-dimensional vertical swell and secondary consolidation properties increased with an increase in compost proportions. As low proportions of composts yielded better enhancements to most expansive soil properties, it was concluded that compost materials can provide engineering benefits to control soils when used in moderate proportions.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ObjectType-Article-2
ObjectType-Feature-1
ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)1090-0241(2007)133:11(1449)