anyone heard of "superpack" - crusher run material? supposed to be superior?

[paulharvey]

That and the hardness of the parent rock they are crushing. The test is call L.A. wear test. Put rock and steal balls in a revolving drum and see how much gets pounded to powder over a number of revolutions. Soft rock wears more then fifty percent.

LBR is what we use in Florida for base. Need an LBR-100 for use as base, but that along doesn't make a pit DOT certified. The actual DOT certified rock is sampled periodically by FDOT and outside labs. You can (I have) seen plenty of good rock that meets FDOT spec, but isn't FDOT certified do to expense; and the county and city didn't require it. We did require it met LBR-100; and pulled samples every 1/2 mile of road way. but more to the point several limerock mines kept a pile for city/county/engineered tested jobs, and another pile that was the cap they sold to anyone that didn't know the diffrence. It would have more clay balls, and overburden, but would still work for Joe blow home owner, just don't build a major highway with it.

LBR=Limerock bearing ratio

Here the abrasion test is done on asphalt aggregate

 

[thatguy]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

I wonder if it is the asphalt removed from an old road bed, them chopped up really fine.. Basically really fine recycled asphalt

I have a friend that is getting this recycled asphalt for his driveway.. his gravel guy says that is what VDOT is using as part of their base under new pavement..

 

[paulharvey]

I wonder if it is the asphalt removed from an old road bed, them chopped up really fine.. Basically really fine recycled asphalt

I have a friend that is getting this recycled asphalt for his driveway.. his gravel guy says that is what VDOT is using as part of their base under new pavement..

In Florida RAP (aka millings) are considered a "substandard based by FDOT and are allowed under shoulder pavement only by FDOT. Now, on the flip side, we used them in wet areas, because they don't tend to pump when wet like limerock does. I also read a couple case studies where FDOT had used it in test strips and it held up equal to FDOT certified limerock.

As a note, not regarding DOT rules, we used milling as base on CR-326 (a busy rural truck route west of Ocala FL) in several limited areas: the millings held up fantastic too traffic with less dust, less pot holing, then basic limerock when left exposed to 45 mph traffic for days and even weeks at a time. When the grader man tried to finish this area, he was doing all the Cat-12H could do too cut 1/4" per pass without stalling it.

 

[Cord]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

I am getting estimates for a 1000 ft run of crusher run/crush and run and a
paving business was telling me they have a much better material
called superpack. the story was State Hwy depts like GA use
this all the time and this contractor says he buys 300 truckloads.
By the way this contractor wants to give me only a verbal job estimate
and says he will figure out the bill "when it is all done".
was he giving me fairy tales about this "superpack" too?
anyone heard of it?

Well, "crusher run" could be what we refer to as being "breaker run". This the first stage of processing of what would be "bank run" or "scooped out of the ground and dumped into a truck" (we have natural gravel around here). Breaker run cracks the biggest rocks to a 4-6" size, but you also get all the fines that come with it. It's the second cheapest material because of the reduced processing cost. It's good for a base when poor soil required over excavation. It is not appropriate for use as a driving surface. Typically I like to use 1" TB or "traffic bond". This stuff packs like concrete and stands up to traffic super well. I like the 1" size because the larger stone is less likely to displace. I've seen TB all the way down to 1/4" which is good for a base under a patio.

Get a quote for the job and make sure you get the load tickets. I've had guys try to rip me off by saying they had met their contract requirements, but couldn't generate the tickets to back their claim up.

 

[oosik]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

Hmmm. In this part of the world, the term "crusher run" is an unknown commodity. If I want gravel with fines that will pack on the driveway, I ask for 3/4 minus or pit run.

 

[Diamondpilot]

Hmmm. In this part of the world, the term "crusher run" is an unknown commodity. If I want gravel with fines that will pack on the driveway, I ask for 3/4 minus or pit run.

Around here that's called 53's.

We use 2's as a base, 53's for the structure, and 10's or 12's for the top coat.

Chris

 

[vtsnowedin]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

In Florida RAP (aka millings) are considered a "substandard based by FDOT and are allowed under shoulder pavement only by FDOT. Now, on the flip side, we used them in wet areas, because they don't tend to pump when wet like limerock does. I also read a couple case studies where FDOT had used it in test strips and it held up equal to FDOT certified limerock.

As a note, not regarding DOT rules, we used milling as base on CR-326 (a busy rural truck route west of Ocala FL) in several limited areas: the millings held up fantastic too traffic with less dust, less pot holing, then basic limerock when left exposed to 45 mph traffic for days and even weeks at a time. When the grader man tried to finish this area, he was doing all the Cat-12H could do too cut 1/4" per pass without stalling it.

Rap by itself is too fine and will move when hot. If placed in a thick layer parked trucks will sink into it on hot summer days. Mix it fifty- fifty with 1- 1/2" concrete stone however and you will get a very strong base that sheds water well. Do place it where you want it before you compact it as once packed you need a very big grader with ripper teeth to change it.

 

[Egon]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

Packing ability goes back to many fracture surfaces and particles of different size to make volume/weight combination as dense as possible.

Road maintenance authorities may contract out crushed rock that meets a specific grading. This may be what is referred to as super pack or various other names. The crusher company may over crush and sell the overage to private parties.

Crushed rock is often referred to by the largest sized rock in the mix. Non crushed rock may be referred to as pit run and again sized by the largest rocks.

Different rock materials crush differently and may require screening and mixing. This may leave the plant with an excess of gap graded or single grade that they have to sell. Usually a specific name will be attached. These vary from area to area but the basis is the larges rock and the grading of the material.

private contractors may get the excess single or gap graded product at lower prices.

 

[MacLawn]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

OP is in GA, so a good chance his gravel will come from the huge granite gravel pit near me. It's blue granite, runs all under Georgia east/west. Good stuff! Just regular crusher run will pack like concrete almost. Call my local quarry, Dogwood Quarry in Appling, they can tell ye. You might have a quarry near Sandersville too, but I'm about 50 miles from there.

 

[roadhunter]

Re: anyone heard of "superpack" - crusher run material? supposed to be superior?

I wonder if it is the asphalt removed from an old road bed, them chopped up really fine.. Basically really fine recycled asphalt

I have a friend that is getting this recycled asphalt for his driveway.. his gravel guy says that is what VDOT is using as part of their base under new pavement..

Exactly what I thought as well. Could be crushed asphalt which is pretty clean or possibly asphalt millings which usually have some dirt but honestly pack really well when moist.