Thesis · July 019 doi: 10. 6084/ figshare. 14381348. v1 Citations reads 740 author: Some of the authors of this publication are also working on these related projects

 
Object and subject of research.
The object of the research is a new highway, 
connecting between road s 4P12 and 4P1. The subject of the study is the elastic 
modulus of the subgrade and the coefficient of compaction. 
 
Structure and volume of the dissertation. 
Completed Master's thesis 
consists of three chapters, a summary and a list of publications. The first section 
examines the existing problems of quality assurance in road construction. The 
second chapter examined the issues of improving quality control in subgrade 
compaction levels. The third chapter provides recommendations on how to improve 
the subgrade compaction level and their cost effectiveness. 
 
Scientific novelty of research. 
Determine the correlation between the 
compaction degree and moisture content, elastic modulus of subgrade soil. 
 
Scientific and practical significance of the research results. 
Using
modern equipment has improved the method of measuring the subgrade compaction 
level. Improved quality control over the construction of the subgrade through 
implementing of the developed method. 
 
Principal results of the work. 
Recommendations have been developed to 
improve the evaluate compaction degree of subgrade by modern devices. The 
economical effectiveness of the recommendations were developed. 
 
Conclusion and suggestions of work. 
The current problems of assessment of 
compaction quality control have been studied and their shortcomings have been 
identified. Compared to the currently and proposed Terratest 5000 Blu and PDU 
MG-4 Udar devices, the methods for assessing the degree of compaction have been 
compared. The proposed Terratest 5000 Blu and PDU MG-4 devices have been used 
Magistrlik_Dissertatsiyasi_Soataliyev R.R.

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to evaluate the advantages of a densities assessment methodology, and they have 
developed recommendations for evaluating the extent of subgrade compaction. The 
economic efficiency of the developed recommendations were determined