Subbase Restoration with Soil-Cement Full Depth Reclamation

[@danagrey3534]

A little different setup then what the few contractors use in Ohio. We did a mile long stretch that had poo sub base which the city said use to be low land and filled in. There is also a high water table and the road get a lot of truck traffic. The asphalt ranged 9 to 12 inches and we milled all of that and was hauled off to lot at the one end of the project. Then the subcontractor came in and if I remember right they could go 28 inches with the reclaim in one pass. So they reclaimed it with lime. Waited about a week, and then came back to do it again with cement. We also hauled back the asphalt milling, spread them and they got added in. But yeah the sub had a water truck hooked to the reclaimed. We ended up with an average of 3 feet reclaimed sub base. Let me tell you what, when we came back in a few weeks to adjust castings, you could bare cut it with a backhoe! Then the asphalt contractor came in and did 1 1/2" intermediate and level coat and 1 1/2" top coat and we did that back in 2005 Probably the best mile worth of road I have seen and I would hate to be the one who had to any sewer, or storm work in that section! We also used to do a lot of lime and cenment stabilization in the winter for a massive industrial park. Definitely higher application and initial upfront costs but it definitely pays off in the long run! Thanks for sharing and we'll done video! We did that

[@DelawareT2Center]

Great to hear about other means and methods. So many variants on the theme. The needs change with geography, climate, road design, etc. and the methods change with contractors and machinery and so forth. Thanks for the comment.

[@rossshepherd2371]

Why is the cutter/tiller not injecting water when doing the 12' cut. If you inject water with the pass than you dont have to come back and water the road everyday with water truck for 7 days. Sub base is done the same day and sealed off and cured to full within 30 days?

[@DelawareT2Center]

Means and methods vary by the contractor and the job. For example, when a milling machine is used rather than a reclaimer, I've often seen them inject water with the mix. However, it is important to keep the surface wet for several days, often the specs call for a week, to ensure that the cement can go to full hydration through the cross section.

[@rossshepherd2371]

when using just a milling machine they are just milling off approximately 2" correct to than come right behind and just resurface. And when just milling off 2' they use water to keep their drum cool and that prolongs the use of the teeth on the drum. But when using a tiller and if you go thru the asphalt and just get into 2" of dirt or soil. That dirt or soil will cool off the drum to where you don't need water but if you're just milling off just asphalt with no soil, the waters what keeps the drum cool and saves the carbide tip teeth. Here in midwest we inject water (lots of water) right in when tilling the cement into the soil and by the next day it is well within the specs of compaction and hardness.

[@jamesnewell8698]

@@rossshepherd2371 Agreed... when we were doing this in northern Alberta we had the same WR2000 we would inject water when mixing with the powder and soil to get a heavy thick clay like material then sheep pad it then set it to grade then smooth drum

[@tracemanning7088]

We do highway and airport work in California. We do it very different.

[@DelawareT2Center]

There are a wide variety of means and methods and this is just one approach by one contractor and local agency.

[@dustinbrandel59]

All roads need massive stones buried beneath them, along their whole length. Like roman roads.

[@brentonholmes6860]

Nowhere near wet enough. The finish should be tight, not dusty like that

[@tophauler8626]

aggravating getting behind these things

[@SG-uh6sw]

You should get in front then

[@Scoot8428]

Seems your taking longer then normal compnies, i dont get it three pieces of equipment is all you would need

[@DelawareT2Center]

The work was performed by an independent contractor and we were just observers (and amateur videographers). What we see is that contractors use a wide range of means and methods to do this and other work. We scratch our heads also at times, but then, it's easier to talk about it then do it, so we defer to each contractor's approach.