Szukana fraza: [Abstrakt = "The article presents the most common causes of problems with acquiring expected parameters of a subgrade with a protective layer. A classification attempt was made by extracting four sets of the causes\: a decrease of soil and water conditions, errors done at design, errors at construction site and technological limitations. Methods for inquiring about the problems’ causes are given, together with recommendations for the subgrade and the protective layer construction. The recommendations aim to minimise an occurrence probability of adverse phenomena influencing deflection and compactness state of the subgrade and the protective layer"]

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