Technology for measuring density of sandy soil or sand bed through manual soil sampler

The invention discloses a technology for measuring the density of sandy soil or sand layer by using an artificial soil fetcher. On the flattened ground, a sand column with a diameter slightly larger than the outer diameter of the ring knife is carefully dug out, and the edge of the ring knife is Downwards, place it flat on the sand column, and press down the ring knife vertically steadily with both hands until the sand column protrudes from the upper end of the ring knife by about 2cm; cut off the excess sand on the edge of the ring knife, and scrape it flat with a ruler ;Cover a smooth wooden board on the edge of the ring knife, press the wooden board with one hand, and cut off the sample from the bottom of the ring knife with a small shovel with the other hand, then reverse the ring knife full of samples, and cut off the excess on the edge of the ring knife. Sand and soil, and scrape it with a ruler; wipe the outer wall of the ring, weigh the total mass of the ring knife and the sample; take a representative sample from the ring knife to measure its water content. The method can accurately measure the density of the sandy soil or the sand layer, which is convenient for taking measures in the subsequent compaction process, so that the quality of the road surface meets the design requirements and the service life of the road surface is ensured.