What is the method for testing soil density that does not require drilling?

The nuclear density test is a method for measuring soil density without the need for drilling. This technique utilizes a nuclear gauge that emits radiation, which interacts with the soil particles. By measuring the amount of radiation that returns to the detector, the gauge can determine the density of the soil, along with moisture content. This non-destructive approach allows for quick assessments of soil conditions in place, making it a preferred choice for many construction and civil engineering projects.

The standard penetration test involves driving a sampler into the soil, which requires drilling, and thus is not applicable here. The compaction test is typically conducted in a laboratory involving samples that have been taken from the field, also needing drilling or excavation. The moisture content test measures the amount of water present in the soil but does not directly assess soil density, limiting its relevance in this context.