Purpose: To understand how incremental load consolidation test data is processed to yield consolidation parameters needed for assessment of stress history and engineering design.
Test Procedure: One-dimensional consolidation testing is performed in general accordance with ASTM Standard D2435 Standard Test Method for One-Dimensional Consolidation Properties of Soils. A load increment ratio (LIR) of 1 was used. Test data are given in the Excel data file. A copy of the ASTM standard is available in the CIE365 FirstClass folder. 22 load increments are given in the file, along with initial conditions for the specimen.
Test Specimen: An undisturbed sample of Boston blue clay (BBC) was obtained from Newbury, Massachusetts. The sample depth was 6.1 m and the soil has a specific gravity of 2.80. Initial void ratio, water content, and dry and total density were determined based on actual specimen properties. These are given in the Excel file.
Assignment: For the specimen, determine the following. Choose to either work in terms of void ratio (e) or strain (e):