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compaction test for subgrade video

compaction test for subgrade video

Quantity of water required for compaction in subgrade ...

Jun 28, 2020 · In this you will learn how to calculate quantity of water required to compact subgrade layer.

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SUB-GRADE PREPARATION - YouTube

ROLLER COMPACTION

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CONSTRUCTION AND ACCEPTANCE TESTING OF SUBGRADE

Understand the compaction and testing requirements for various subgrade materials INTRODUCTION What is Subgrade? Subgrade is the top surface of an embankment or cut section that is shaped to conform to the typical section upon which the pavement structure and shoulders will be constructed.

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Compacting Subgrade

Subgrade compaction is the act of grading, shaping, and compacting the natural subgrade materials prior to placing an aggregate base or pavement. It mechanically increases the unit volume (density) of the soil or base. Different soil types have different optimum moisture contents and densities. Sandy soils require lower moisture contents and can typically achieve higher

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Part 3 COMPACTION TESTS - Missouri S&T

procedures for flexible asphalt runways that incorporated the properties of the pavement subgrade, because the aircraft wheel loads are transmitted directly to the subgrade in flexible pavements. This focused attention on the importance of subgrade compaction, leading to the Modified Proctor compaction test in 1946.

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Fill/Backfill Compaction Requirements for Sub Base, Base ...

Jul 04, 2021 · 2. Under area paving – one test every 2000 ft² (180 m²) of each lift. 3. Road base and sub-base – one test every 2000 ft² (180 m²) of base or sub-base. 4. Backfill of trenches – one test for every 50 linear ft (15 m) of each lift. 5. General fill – one test every 5000 ft² (460 m²) of each lift. As a minimum, at least one in-place ...

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Services — Mid Pacific Engineering Inc.

Subgrade Compaction Testing. Soils Expansion Potential. Lime/Cement Stabilization. Pipeline Video Monitoring. Utility Trench Backfill Inspection . Our construction materials engineering & field testing services include: Anchor Bolt and Dowel Load

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FIELD SAMPLING AND TESTING MANUAL SECTION 200

1 compaction curve for each three miles of roadway, or a minimum of 1 test per 200,000 C.Y. ND D 2167, “Density and Unit Weight of Soil in Place by the Rubber Balloon Method,” or ND T 191, “Density of Soil In-Place by the Sand Cone Method” 1 density test for each three miles of roadway, or a minimum of 1 test per 200,000 C.Y.

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Subgrade soil test, by Micotol - SlideShare

Dec 18, 2013 · 21 California Bearing Ratio Test Procedure Dynamic Compaction Take 4.5 to 5.5Kg of soil and mix thoroughly with the required water (OMC) Fix the extension Collar and the base plate to the mould, Insert the spacer disc over the base, and place the filter paper over the spacer disc. Compact the mix soil in the mould either using light compaction ...

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Proctor Compaction Test: A Basic Guide - Gilson Co.

The Proctor Compaction Test establishes the maximum unit weight that a particular type of soil can be compacted to using a controlled compactive force at an optimum water content. This is the most common laboratory soil test and the basis for all engineered compacted soil placements for embankments, pavements, and structural fills.

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Subgrade soil test, by Micotol - SlideShare

Dec 18, 2013 · 21 California Bearing Ratio Test Procedure Dynamic Compaction Take 4.5 to 5.5Kg of soil and mix thoroughly with the required water (OMC) Fix the extension Collar and the base plate to the mould, Insert the spacer disc over the

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Subgrade Preparation for New Pavements – Pavement Interactive

Increasing Subgrade Support – Compaction Figure 1. Checking subgrade density. In order to provide maximum structural support (as measured by M R, CBR or R-value), a subgrade soil must be compacted to an adequate density (see Figure 1). If it is not, the subgrade will continue to compress, deform or erode after construction, causing pavement ...

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What is a compaction test? - Quora

Answer (1 of 3): The original Proctor test, ASTM D698 / AASHTO T99, uses a 4-inch-diameter (100 mm) mould which holds 1/30 cubic feet of soil, and calls for compaction of three separate lifts of soil using 25 blows by a 5.5 lb hammer falling

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Proof-Rolling of Suhgrades

few coverages of a heavy rubber-tired roller on a subgrade or other layer of a subbase or base course after the completion of normal compaction. The procedure is used to check the adequacy of the normal compaction and to correct any deficiencies that may exist. In recent months several states have incorporated proof-rolling requirements

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Review of Density Compliance Systems for Subgrade and ...

contractor-developed compaction method specifications. Review the application of dry density ratio and alternate methodologies as they apply to compaction compliance of non-cohesive subgrade and embankment materials. Review intelligent compaction technologies which are able to accurately record and document compaction processes for quality

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FIELD SAMPLING AND TESTING MANUAL SECTION 200

1 compaction curve for each three miles of roadway, or a minimum of 1 test per 200,000 C.Y. ND D 2167, “Density and Unit Weight of Soil in Place by the Rubber Balloon Method,” or ND T 191, “Density of Soil In-Place by the Sand Cone Method” 1 density test for each three miles of roadway, or a minimum of 1 test per 200,000 C.Y.

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What Types of Soil Tests Required for Road Construction?

This soil compaction test also called as Proctor test is used for the determination of the mass of dry soil per cubic meter when the soil is compacted over a range of moisture contents, giving the maximum dry density at optimum moisture content. ... The CBR test is used for the evaluation of the subgrade strength of roads and pavements. The CBR ...

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Chapter 4: Construction Details, Section 4-25 Aggregate ...

Test potential sources of aggregate subbase when the contractor requests such testing in writing. Deduct applicable Caltrans costs for sampling and testing from contract payments as required under Section 6-1.03, “Local Materials,” of the Standard Specifications. Review compaction tests of the subgrade that is to receive the aggregate subbase.

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SECTION 5 – PAVING AND SUBGRADE DESIGN REQUIREMENTS

1. Swell Test: Test for swell potential in Austin Chalk soils using swell test (ASTM D 4546) at the anticipated final overburden pressure at the top of the sample using 125 psf per foot of soil. Test at least two (2) samples per boring at varying depths from

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Subgrade Pictures, Subgrade Stock Photos & Images ...

Compaction tests with lightweight deflectometer. Measuring subgrade and subbase layers percents of compaction to improve the quality of construction site. Dirt road lined by the wooden posts of a power line crossing the barren land surrounding the Pochengzi archaeological site area-way to the nearby Yulin caves.

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JKR_Standard_Specification 2014 Pages 251 - 300 - Flip PDF ...

Mar 25, 2020 · 2.1.2 Material for the top 300 mm of subgrade shall have a minimum soaked laboratory California Bearing Ratio (CBR) as shown on the Drawing when compacted to 95% of the maximum dry density determined in the BS 1377 Compaction Test (4.5 kg Rammer Method).

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Standard Proctor Test - its 5 [Procedure Steps & Tips]

May 03, 2020 · This test is used to determine the maximum dry density for any soil and to determine how much soil must be compacted to ensure the stability of a structure and prevent damage from settling. The standard proctor test is generally performed in the labs. The standard proctor test is a soil compaction test which ensures that how its density changes with

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ROADWAY CONSTRUCTION - RD001-1A GENERAL NOTES

A compaction of no less than ninety-eight (98%) percent density based on AASHTO T-180 shall be required. 6.Tests for sub-grade bearing capacity and compaction shall be done at a minimum of every 250 feet and shall be staggered to the left, right, and at center line of the roadway. For short sections of roadway, at least two (2) tests shall be ...

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7 Subgrade Construction - IN.gov

Any failing tests require additional work on the subgrade in that area to obtain the required density. Soil compaction at the optimum moisture content requires the least amount of compactive effort to obtain 100 % maximum dry density. Therefore, drying excess moisture or adding water to a dry subgrade may be necessary to obtain this required ...

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ITEM 204 SUBGRADE COMPACTION AND PROOF ROLLING /

204.03 Compaction of the Subgrade. The Engineer will perform the compaction testing according to Supplemental Specification 1501. The City may check for compaction before or after the fine grading operation. Compact the subgrade materials that have a maximum dry density of 100 to 105

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EFFECTS OF SUBGRADE-COMPACTION MOISTURE

The first test represented a subgrade at optimum moisture content and therefore maximum strength. The second and third test represent a 2.5% and 5.0% increase in moisture content in the subgrade layer respectively. The Li and Selig Model for fine grained subgrade soil shown in Equation 1 was used to adjust the strength of the subgrade layer

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Comprehensive Subgrade Deflection Acceptance Criteria ...

1.2 Subgrade Compaction Considerations Test rolling and/or proof rolling of constructed subgrades to verify the adequacy of compaction have been utilized for many years. The term proof rolling was first introduced in 1957 by the

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Subgrade Preparation for Concrete Slab - Dirt Connections

Jun 08, 2016 · Subgrade work is the proper placement and compaction of earthwork materials. These materials serve as a base for the building of a structure or road construction project. The importance of testing with desired results will lead to the longevity and durability of your project.

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Section 2010 - Earthwork, Subgrade, and Subbase

materials as required by the Engineer, compaction and finishing of the excavated area, and all incidental work as may be required. G. Subgrade Preparation: 1. Measurement: The area of the proposed pavement under which the subgrade preparation is performed, plus 2 feet on each side, will be measured in square yards. 2.

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What Types of Soil Tests Required for Road Construction?

This soil compaction test also called as Proctor test is used for the determination of the mass of dry soil per cubic meter when the soil is compacted over a range of moisture contents, giving the maximum dry density at optimum moisture content. ... The CBR test is used for the evaluation of the subgrade strength of roads and pavements. The CBR ...

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Chapter 8 - NHI-05-037 - Geotech - Bridges & Structures ...

Jun 27, 2017 · The field CBR test could measure the in-situ CBR of finished subgrade in order to verify design intent for flexible pavements, and the plate load could directly measure the modulus of subgrade reaction, or k-value, for rigid pavements. The plate load test is the standard practice in Europe for all pavement types.

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Plate Load Test – How it Works – Measuring Ev2 and Ev1

Plate Load Test – How it Works – Measuring Ev2 and Ev1. The Plate Load Test AX01 is the simple solution to determine the strain moduli Ev2 and Ev1 (a figure for the bearing capacity) and the ratio Ev2/Ev1 (a figure for the compaction level). The modulus is an indicator for the bearing capacity of the soil or flexible pavement under the loading plate.

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SECTION 160 - fdotewp1.dot.state.fl.us

The Contractor may process the subgrade to be stabilized in one course, unless the equipment and methods being used do not provide the required uniformity, particle size limitation, compaction, and other desired results, in which case, the Engineer will direct that the processing be done in more than one course.

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Chapter 9 Embankments - Washington State Department of ...

extending 100 feet beyond a structure’s end at subgrade elevation for the full embankment width, plus an access ramp on a 10H:1V slope from subgrade down to the original ground elevation. The bridge approach embankment also includes any embankment that replaces unsuitable foundation soil beneath the bridge approach embankment.

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Comparison and evaluation of railway subgrade quality ...

Oct 06, 2016 · There are several indicators available to measure the compaction and mechanical performance of a completed subgrade system, including compaction degree (K), porosity (n), modulus of subgrade reaction (K 30), basic bearing capacity (σ 0), strain moduli (E v), dynamic modulus of deformation (E vd), and light dynamic penetration (N 10). The ...

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GPS Use for Roadway Subgrade - TOPS

Mar 03, 2020 · Trimming subgrade. When you get compaction on select fill in a subgrade planned for trimming, the trim amount is often not specified. We have seen times where you need to overbuild to 5-hundreths and trim, but this is the exception. Here is what we do: Run tests with real world natural conditions, meaning the OG may compact more in some areas.

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Quality Assurance and Self Control in Road Construction ...

Analogous to a dynamic plate load test the blows from the cylindrical drum can be used as a load test of the soil. Corresponding compaction meter values represent the con-dition of the compacted area (Figure 1). This condition is presented to the roller operator instantly and continuously, enabling him to evaluate where compaction work is finished,

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What is a compaction test? - Quora

Answer (1 of 3): The original Proctor test, ASTM D698 / AASHTO T99, uses a 4-inch-diameter (100 mm) mould which holds 1/30 cubic feet of soil, and calls for compaction of three separate lifts of soil using 25 blows by a 5.5 lb hammer falling

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