5 results about "Dry density" patented technology

The invention discloses a roadbed filler compaction quality control method and system. The method comprises the following steps: acquiring compaction target information; drawing a dry density-mass moisture content relation curve graph according to the compaction target information; according to the dry density-mass moisture content relation curve graph, generating quality controllable data; and executing quality control operation through the quality controllable data. The method solves the problems that according to an existing compaction method and standard, the index values such as the mass moisture content, the dry density/compaction degree or the rigidity of compaction filler are controlled, the indexes cannot represent the unsaturated state, therefore roadbed design, compaction construction and normal service lack unsaturated soil theoretical correlation, it cannot be really and effectively guaranteed that the compaction characteristic meets design targets and service requirements such as post-construction volume change and water-force performance in the service period, space-time variability of compaction energy, filler physical states (types, gradation and the like) and the like in the field compaction process is not considered, and compaction quality evaluation indexes still need to be further improved.

The invention discloses a cleaning method of a breeding farm. The method comprises the following steps: (1) performing primary scraping on the ground in the breeding farm by adopting a feces scrapingmachine, and stacking scraped feces on one side of the ground; and (2) performing secondary scraping on the ground in the breeding farm by adopting a feces scraping machine, stacking scraped feces andthe scraped feces obtained by the primary scraping together, transporting the stacked feces to the outside of doors by a trolley, drying the feces in the sun, andenabling the dried feces to be used as fuel, wherein the drying density of the feces is 1 kg/m<2>. According to the method disclosed by the invention, the feces is scraped for two times, after the feces is scraped, cleaning is performedby using a high-pressure water gun, so that good cleaning of the breeding farm is realized, residues are avoided after the feces is cleaned, probability of generation of pathogens is reduced, and a disease incidence rate is reduced.