Compaction Control of Earth-Rock Mixtures: How to Develop and Use Density Interference Coefficients and Optimum Water Content Factors
Abstract
This report provides instructions for the development and application of a new compaction control or quality assurance procedure for soils containing gravel-sized particles. The method is based on Density Interference Coefficients which relate the maximum dry density of the total gradation to those of its minus 3/4-in. or minus No. 4 fraction and on Optimum Water Content Factors which relate the optimum water content of the total gradation to those of its minus 3/4-in. or minus No. 4 fraction. Entire families of gradations of earth-rock mixtures such as would typically be obtained from a single borrow source can be represented by single curves of the two parameters versus gravel content. A short-cut method to obtain the curves over the entire range of gravel content of the total materials without large-scale compaction testing of the total materials is described. Instructions are provided as to how to calculate maximum dry density and optimum water content to be associated with the fill density sample from the values of Density Interference Coefficient and Optimum Water Content Factor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1992
- Accession Number
- ADA251070
Entities
People
- Victor H. Torrey Iii