1.0.1 This specification is formulated to standardize the placementand roller compaction test on embankment materials of earth androckfill dams and corresponding testing methods, to improve theaccuracy of test results, and to promote the consistency andco...[繼續(xù)閱讀]

    2.0.1 The placement and roller compaction test in design stage is tostudy the engineering properties of embankment materials, evaluatethe quality of embankment materials and provide basic parameters fordesign. The placement and roller compaction test duri...[繼續(xù)閱讀]

    3.1.1 Main equipment for placement and roller compaction tests,including smooth drum vibratory roller, excavator, loader, bulldozerand dump truck, etc. shall be selected based on the types andcharacteristics of embankment materials, degree of compaction,p...[繼續(xù)閱讀]

    3.2.1 Several reference marks shall be arranged near compactionsite and beyond the scope of vibratory roller. Mark the compactionsite by drawing lines and survey the relative elevation of foundationbottom. The survey shall comply with relevant provisions ...[繼續(xù)閱讀]

    3.3.1 Start the selected vibratory roller to normal operatingcondition outside the compaction site and then guide it into the site ata speed of 2 km/h to 3 km/h by test personnel. Operate the vibratoryroller by traveling forward and backward repeatedly (a...[繼續(xù)閱讀]

    3.4.1 Density test(1) Pit watering method shall be adopted in density test. Themeasuring points should be distributed uniformly.(2) Place lantern rings steadily on the measuring points. The distancefrom the outer edge of the ring to the side boundary of t...[繼續(xù)閱讀]

    3.5.1 The average settlement amount h and average accumulativesettlement ratio μ of each test block are calculated by Equation(3.5.1-1) and Equation (3.5.1-2):Where:Δh average settlement amount of a test block, mm.hiq =relative elevation of grid intersec...[繼續(xù)閱讀]

    4.1.1 Main equipment for the placement and roller compaction test,including self-propelled smooth drum vibratory roller, excavator,loader, bulldozer, dump truck, etc. shall be selected based on thetypes and characteristics of embankment materials, degree ...[繼續(xù)閱讀]

    4.2.1 The base of compaction site shall be measured as perprovisions of 3.2.1.4.2.2 Sampling from borrow areas and quarries.(1) Sample uniformly up and down around the material piles or at theexit of belt conveyor. The samples obtained shall be representa...[繼續(xù)閱讀]

    4.3.1 The roller compaction test shall comply with provisionsspecified in 4.3.4.3.2 The compaction test shall be reviewed as per the selectedoptimum compaction parameters. Such in-situ tests as load test, directshear test and seepage deformation test shal...[繼續(xù)閱讀]