ih8xc
Geotechnical
- Jun 25, 2015
- 7
I have a project where we plan to use a dredged marine soil as structural fill and plan to use lime or cement to modify/stabilize it for use. I've performed a number of tests on the native material (hydrometer, proctor, atterberg limits, and moisture content) to classify it and to be able to quantify improvements through the addition of the admixtures. The material consists of 35% silt, 35% sand, 20% clay, and 10% gravel, LL=38, PL=21, PI= 17, SL=18, optimum moisture for compaction is 13.5%, and the natural moisture is about 40%.
Soil modification is not a common procedure in our area, so I'm looking to develop a test mixture program to evaluate the proper mixture percentages. I'm unsure where to start. If I'm using cement what percentage should I start at and what increments should I continue forward with? If I'm using lime are the percentages different? Is there a specific mixing and mellowing procedure (ASTM or other)? I'm hoping to come up with an optimum mixture percentage for each and then perform a CBR to evaluate the strength. Are there any other test I could or should be performing to evaluate the effectiveness of the additives?
Appreciate the input.
Soil modification is not a common procedure in our area, so I'm looking to develop a test mixture program to evaluate the proper mixture percentages. I'm unsure where to start. If I'm using cement what percentage should I start at and what increments should I continue forward with? If I'm using lime are the percentages different? Is there a specific mixing and mellowing procedure (ASTM or other)? I'm hoping to come up with an optimum mixture percentage for each and then perform a CBR to evaluate the strength. Are there any other test I could or should be performing to evaluate the effectiveness of the additives?
Appreciate the input.