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Field dry density projection method of maximum dry density

Author: XuShunLing
Tutor: LiJia
School: Hunan University
Course: Road works
Keywords: Maximum dry density Compaction curve Mathematical model Compactness
CLC: U416.1
Type: Master's thesis
Year: 2002
Downloads: 123
Quote: 3
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Abstract


Currently, the highway project construction quality subgrade compaction maximum dry density detection applications is through the indoor standard compaction test to determine. The method laboratory test work tedious, time consuming , and there are some limitations. At least one kind of soil samples generally need to do a compaction test, a slight change in soil samples and to make separate , giving detection, lead to a greater burden on supervisors often have a greater impact on the construction schedule . Therefore, an urgent need fast, accurate and convenient on-site dry density calculated by the maximum dry density of advanced methods to gradually replace the traditional standard compaction test . In this paper, Henan Provincial Communications Department in 1997 issued by the Henan Branch Exchange ( 9791003 ) \Off the highway through Los indoor compaction test data processing and mathematical projections , the establishment of five experimental points compaction function mathematical model, and develop related applications . Further study will be extended to 5:00 France 9 am to 3 experimental multi-level optimization of experimental points compaction curve data processing method , proposed by the field dry density calculated maximum dry density XGM related dry density method , referred to as XGM method, XGM law developed software applications, and then study the construction site compaction test data optimization approach. In order to further validate and improve the XGM France to Los three highway test site to collect information on the indoor compaction test and field test data compaction method using XGM optimize data processing, optimal compaction curve obtained indoors maximum dry density and optimum moisture content , and can effectively provide on-site construction quality control methods, application XGM correction method can also assess nuclear law , ring knife compaction testing and field testing data link between the use of on-site dry density calculated maximum dry density the XGM method further improve and perfect the method compared with the traditional test , will have a simple, rapid, accurate, and greatly reduce the labor intensity of testing personnel to speed up the construction schedule , etc., in the field at the same time be able to detect the degree of compaction through on-site determination of dry density application software directly extrapolated field dry density . Especially for non-pure soil and especially for large-scale earthworks , and more practical , more reasonable and more accurate.

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade
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