how to compact aggregate base course

208–3.5 COMPACTION. Compact aggregate immediately upon completion of the spreading operations. Use a sufficient number, type, andweight of rollers to compact the material to the required density. Compact the aggregate base course in-place to a field target density of at least100 percent and a lower specification limit (L) of at least 97.0 percent of the maximum density of laboratory specimens prepared from samplesof base course material delivered to the job site.

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Is 100% compaction required for aggregate basecourse/sub base?

Have seen 100% required for aggregate basecourses, and due to frequency of testing and overall quality control of material it is not difficult to acheive with the regional quarries we have in this area. As for subbases, not sure of the material (s) you are refereing too. RE: 100% compaction for aggregate basecourse/sub-base?

What makes a good aggregate base course?

In order to adequately serve their function, aggregate base course soils must contain enough larger soil particles (gravel, crushed stone) to provide strength and permeability, yet enough fine particles (clay, silt) or additives (chemical stabilizers) to maintain their cohesion and structure under loads.

What percentage of modified Proctor do you use for aggregate base courses?

we use 98 percent of a modified proctor here in FL for FDOT base courses. Not uncommon to see 100 percent of modified proctors on airport pavement subgrades. RE: 100% compaction for aggregate basecourse/sub-base? 100% modified in North Carolina.

What is ABCM aggregate base coarse?

The thickness of sub-base can range from 1″ to 2″ inches on light weight traffic areas like pathways and paver patios above the sub-grade when a ABC is not required, ABCM Aggregate Base Coarse is a hard pack sub-base compaction material. Cross-Section layers that make up a mortar-less or “dry-laid” pavement.

How do you compact an aggregate base?

0:002:47Base Compaction - YouTubeYouTubeStart of suggested clipEnd of suggested clipSpread each lift as close as you can to the correct depth and gray then compact it start around theMoreSpread each lift as close as you can to the correct depth and gray then compact it start around the perimeter. And then work your way toward.

How do you compact a gravel base?

0:282:48how to put in a “COMPACTED” gravel driveway (doing it right) - YouTubeYouTubeStart of suggested clipEnd of suggested clipOnce you roll over the gravel with this it almost looks paved. Not bad for a gravel driveway. SoMoreOnce you roll over the gravel with this it almost looks paved. Not bad for a gravel driveway. So here's that gravel all loosened up and here it's all compacted. Down.

What do you use to compact a road base?

1:263:43Subbase Analysis and Compaction - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow the equipment I'm going to use to get the compaction. Level I need is again this 12,000 poundMoreNow the equipment I'm going to use to get the compaction. Level I need is again this 12,000 pound centrifugal force rated vibratory plate compactor.

What is compacted base course?

Subgrade—this is the native soil (or improved soil), usually compacted. Subbase—this is a layer of gravel on top of the subgrade. Base (or base course)—this is the layer of material on top of the subbase and directly under the slab.

Can you compact without a compactor?

A lawn roller or hand tamper can be used to compact the moist soil, or you can walk over it.

What can I use to compact gravel?

0:344:42How to Use a Plate Compactor - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou just tamp down with with that tool but the thing about that is it's not all that effective. SoMoreYou just tamp down with with that tool but the thing about that is it's not all that effective. So if you want to do the job right you basically need this this tool it's called a plate compactor.

Should you wet road base before compacting?

Secondly wet it. Ensure the moisture content in the soil is correct. Moisture in your soil is vital to achieving proper compaction as the water helps slide soil particles together.

Can you compact sub-base by hand?

Ideally a small wacker plate would be beneficial to compact it but a hand tamp will do an ok job although you'll have arms like popeye when you finish.

How do you compress a road base?

Compaction of road base is usually performed using a mechanical plate compactor (see Figure 5). It is recommended that the road base is compacted in 2 - 3 layers, not in one single layer. Tip: An uneven base will give an uneven paver surface. Check with a spirit level.

How do you compact a sub base for a driveway?

How is a sub-base laid for a driveway? Spread layers of max. 150mm with rakes. ... Compact the layer by multiple passes with equipment until compacted fully. ... It must be level checked to make sure even, to a typical tolerance of +10mm to –15mm. ... It's important that it's tight, i.e. no pockets or holes.

What is aggregate base course?

Aggregate Base is used as the base course under asphalt pavement roadways, under concrete slabs and structural foundations, and as backfill material for underground pipelines and other underground utilities within a roadway.

What is the purpose of aggregate base course?

Their purpose is to help transition surface loads from the pavement to the subgrade, evenly support the pavement surface profile, and protect the overall pavement system from water intrusion and deformation.

What is aggregate base course?

Aggregate Base Course often referred simply as ABC, has certain desirable properties. Base Course in pavements refers to the sub-layer material of an asphalt roadway and is placed directly on top of the undisturbed soil (Sub-Grade) so as to provide a foundation to support the top layers of the pavement. It is typically made of a recipe of different ...

What is aggregate made of?

Aggregate is made from quarried rock, recycled asphalt, or concrete. Aggregate Base is used as the base course under asphalt pavement roadways, under concrete slabs and structural foundations, and as backfill material for underground pipelines and other underground utilities within a roadway.

What is a sub base?

The Sub-Base is a layer of small chipped aggregate and dust, typically Crushed Fines, which is laid above the ABC on driveways or heavy traffic areas . The thickness of sub-base can range from 1″ to 2″ inches on light weight traffic areas like pathways and paver patios above the sub-grade when a ABC is not required,