While constructing long embankment (appx 4 km) in multiple layers of 300mm depth, what shall be spacing of core cutter samples to ensure adequate dry density measurement.
Rigid pavements because of their nature, allow for a larger variation in subgrade material (in terms of strength), unlike flexible pavements. That is why rigid pavements can be built over almost any kind of soils with appropriate ground improvement. The general range for CBR is 2% to 14% or 15%. IfRead more
Rigid pavements because of their nature, allow for a larger variation in subgrade material (in terms of strength), unlike flexible pavements. That is why rigid pavements can be built over almost any kind of soils with appropriate ground improvement.
The general range for CBR is 2% to 14% or 15%. If it is found below 6%, then the code specifies some necessary subgrade improvement before laying the concrete slab directly over it.
Also, the CBR could be increased up to say 40% or 50% by ground improvement, and still, the subgrade may be fit for rigid pavements.
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AdityaBhandakkar
Hi, There are not any specific criteria for the spacing of sample taken, and the decision is purely based upon site civil engineers and various criteria of soils and on observations. if you found soil which is less compacted or even is created then take samples for observation and check the bulk denRead more
Hi, There are not any specific criteria for the spacing of sample taken, and the decision is purely based upon site civil engineers and various criteria of soils and on observations. if you found soil which is less compacted or even is created then take samples for observation and check the bulk density of soil and moisture content. Please refer to the following article for details about core cutter method and its applications: Link: https://theconstructor.org/geotechnical/dry-density-of-soil-by-core-cutter-method/2680/
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