Oct 6, 2004 · DGA stands for Dense Graded Aggregate. My understanding is that this material consists of range of particles ranging from about 1" down to dust-sized. That's really all I know about DGA. The site is in Central New Jersey.

May 28, 2005 · Data from the "Design and Control of Concrete Mixtures" book, states that the particle density of aggregate is between 150 and 180 (lb/ft^3). This data refers to the "particle" density of aggregate. However, since aggregate is made up of particles, it is reasonable that the compacted density of the aggregate is between (150-180 lb/ft^3).

Aug 4, 2009 · I am placing the aggregate base course on a roadway for the Army Corps of Engineers. The ACOE is claiming that the DGA is contaminated because of the silt that traffic has left on the surface. When can we say that the DGA is contaminated? Is there a standard that gives us some parameters? I have been looking but I can find anything.

Jan 23, 2003 · When constructing cofferdams for 'small' bridge footings we often backfill the void between the concrete footing and temporary steel sheeting with dense graded aggregate (DGA). This allows us to remove the lower tier waler and cross braces. In essence, it provides a continuous brace. When the...

Oct 31, 2011 · You have to look at the gradation of the aggregate and the volume of voids which makes it a simple volume calc. RE: Estimating DGA CarlB (Civil/Environmental) 31 Oct 11 15:25

Aug 5, 2009 · RE: Contaminated Aggregate Base Course BigH (Geotechnical) 5 Aug 09 17:53 The problem, though, may not be with the "8% fines" but that the fines are concentrated rather than dispersed homogeneously which is "understood" in a gradation spec - i.e., no segregation. if the fines are at the surface - perhaps a rough brush using mechanical metal ...

Oct 31, 2011 · I was asked by a contractor how much area would a ton of DGA cover at a 4" depth? I don't have any experience with DGA, but to me it's more of a mathematical question regarding densities and volumes. It is that simple, or are there formulas for these characteristics associated with DGA?

Mar 5, 2019 · The wall has approximately a 40" deep footing (from the inside)only 2'x1'. On the inside 2ft worth of soil must be excavated due to contamination. The contractor wants to put back DGA instead of soil. Is there any benefit to this? My concern is that the DGA will not offer enough lateral strength to keep the wall from sliding.

Dec 15, 2003 · The voids between the open gradation aggregate (Focht3's 1.5 inch washed river gravel and especially dirtdoctors' #57 stone) can allow the adjacent soil below and around the sides to erode into the voids with water flow or extrude into the voids from pressure until the so-called "filter-cake develops." A graded filter design ...

Aug 19, 2005 · boffintech has some very good advice. In some localities, the # 57 Stone and other poorly graded (geologist-well sorted)gravels and sands have been utilized as 'self compacting' stabilizing aggregates with an excellant track record.