CAN/BNQ 2501-250/2023

This standard specifies the procedure to determine the relation between the water content and the dry density of soil and soil aggregates mixes when they are compacted in a standard mould by a 2.495 kg rammer dropped from a height of 305 mm. Three methods are used to determine this relation (see Chapter 5). NOTE — The laboratory compaction test methods described in this standard generally provide good measurements of optimum water content and maximum dry density, except for soil and soil aggregate mixes of high hydraulic conductivity. In many cases with such materials, these test methods do not provide an accurate water content dry density relation. Maximum masses thus derived are generally lower than those obtained using vibration methods. These test methods apply to natural soils such as till, clay or any other soils not having been subjected to, inter alia, dynamiting or crushing.