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However, this relationship presents problems in both the laboratory and in the field when using excess compaction energy levels in cohesive soils with a high natural water content, including differences in the compaction energy levels and a reduction in strength as a result of over-compaction. The compaction curve, which considered the compaction energy levels, is usually unknown in the field and the main factors influencing the stiffness and strength of compacted soils are the dry density and the degree of saturation. We show here compaction results for soils in terms of the dry density and degree of saturation and introduce the concept of an optimum compaction line.<\/jats:p>","DOI":"10.1144\/qjegh2019-130","type":"journal-article","created":{"date-parts":[[2020,1,10]],"date-time":"2020-01-10T17:35:24Z","timestamp":1578677724000},"page":"452-459","update-policy":"https:\/\/doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":9,"title":["A novel approach to evaluating the compaction control of soils"],"prefix":"10.1144","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7151-8283","authenticated-orcid":false,"given":"Satoru","family":"Shimobe","sequence":"first","affiliation":[{"name":"College of Science and Technology, Nihon University, Funabashi 274-8501, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1866-4345","authenticated-orcid":false,"given":"Giovanni","family":"Spagnoli","sequence":"additional","affiliation":[{"name":"BASF Construction Solutions GmbH, Dr-Albert-Frank-Stra\u00dfe 32, Trostberg 83308, Germany"}]}],"member":"1881","published-online":{"date-parts":[[2020,2,19]]},"reference":[{"key":"e_1_3_5_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10706-016-0092-9"},{"key":"e_1_3_5_3_1","volume-title":"Soil Mechanics: Basic Concepts and Engineering Applications","author":"Aysen A.","year":"2002","unstructured":"Aysen, A. 2002. 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