مسبار أشعة غاما : النترونات السطحي للقياسات المتزامنة للرطوبة و الكثافة السطحية

Abstract EN

The nuclear moisture-density probe (surface gamma-neutron probe) can quickly and precisely determine the moisture and density of construction materials, without the use of destructive methods.

In the field of civil and geotechnical works, this probe is used to determine the compaction of soil, aggregates, concrete and asphalt, and to control the quality of compaction of these materials.

This probe has become more popular in the repeated assessment of both the moisture and density of the surface layer of agricultural soil.

It has been used also to assess the effect of soil compaction on crop growth, seed germination and plant seedlings, as well as in the studies of soil water balance and spatio-temporal changes in soil water content.

The nuclear moisture-density probe is equipped with two radioactive sources: a gamma-ray source for density determination through direct transmission or backscatter depending on the required depth of measurement and the thickness and nature of the tested material, and a neutron source emitting fast neutrons for moisture determination.