Field Dry Density (FDD) is a critical parameter in earthwork, road construction, infrastructure development, and foundation engineering. It helps determine whether the compacted soil layer meets the required degree of compaction as per project specifications and IS codes.
At CIVILTECH QUALITY CONTROL LAB PRIVATE LIMITED, we perform both Core Cutter Method and Sand Replacement Method to evaluate in-situ soil density, ensuring accurate and compliant results for embankments, subgrade, backfilling, pavement layers, and foundations.
A cylindrical cutter is driven into the ground, and the extracted soil sample is weighed and tested to determine:
This method is simple, quick, and ideal for compacted cohesive soil layers. All procedures are performed as per IS 2720 (Part 29).
The Sand Replacement Method is used where the core cutter cannot be applied—typically for granular or coarse soils. A hole is excavated, and calibrated sand is used to determine the volume of the hole.
The test determines:
CIVILTECH QUALITY CONTROL LAB PRIVATE LIMITED is an NABL accredited testing laboratory (IS/ISO/IEC 17025:2017) delivering reliable Laboratory & Field Testing, QA/QC services, and Geotechnical Investigation with accuracy, integrity, and timely results.