Comparison between static and dynamic laboratory compaction methods

• 發表在: Electronic Journal of Geotechnical Engineering
• 主要作者: 2-s2.0-79251553452
• 格式: Article
• 語言: English
• 出版: 2010
• 在線閱讀: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79251553452&partnerID=40&md5=c013aa1822f1613dc7454e7018548280

Compaction is the most important activity in the early stages of construction in order to improve engineering properties of soils. There are two main methods of compaction that are used in this study which are Static Packing Pressure and Standard Proctor Test. The static packing pressure test is different concept from dynamic compaction that has been produced by R.R Proctor, 1993. The concept produced by R.R Proctor has a few imperfections in determine the value of maximum dry density (MDD) and optimum moisture content (OMC). One of these imperfections is where we determine the OMC and MDD in soil laboratory using dynamic method to decide for the MDD and OMC of subgrade in which we use static compaction method to achieve it. Thus, a new method has been invented to determine the MDD and OMC values by using static compaction efforts in order close the gap between laboratory and field data. These study exam different classes of cohesive soils and the results obtained from MDD and OMC will be compared against the field results, it was found that the static pressure method is more practical and sensible than the dynamic compaction. Based in the laboratory results, Sample B under static pressure gives 2.014Mg/m3 as MDD while under dynamic it gives only 1.788Mg/m3. Therefore, the static test reached higher degree of compaction compared to dynamic method. This research will be developed further to improve engineering parameter especially for pavement design which is based on the value CBR. The Packing Pressure Compaction test is introduced as a new laboratory compaction method and it is suitable to measure the degree of compaction for Malaysian cohesive soils. © 2008 ejge.