Coughlin provides CIR solution by ProQuest

VIEWS: 14 PAGES: 6

In [Darren Coughlin]'s CIR train, a Roadtec 950-hp RX-900 cold planer provided the train's propulsion, towing a RT-500 cold recycler and a nurse tank for the emulsions. It also pushed a water truck and a slurry tanker that are always with the train.

More Info
									PAVEMENT PRESERVATION




     Coughlin provides
     CIR
     solution




New cold in-place recycling technology put to the test on
Nevada maintenance project



W
              ith highways and          throughout the Western United         ing base cracks from migrating
              paved roads around        States, recently used the latest in   to the surface. A final overlay
              the world exhibiting      CIR technology on a district main-    of traditional hot mix was then
              surface defects in        tenance contract project involving    applied after a curing period of
              need of repair, utiliz-   four different sites throughout the   approximately two weeks. The
ing an innovative road reconstruc-      state of Nevada.                      four Nevada sites were located
tion process such as cold-in-place         All four sites required the cre-   on U.S. 93, S.R. 447, S.R.757, and
recycling (CIR) is a cost-effective     ation of a “crack barrier” between    U.S. 50.
and environmentally friendly            the existing roadbed and the new
alternative to more conventional        surface, and specifications stipu-    CIR train
methods of rebuilding asphalt           lated that the existing roadbed          Coughlin employed the CIR
roadways.                               was to be partially milled up,        “recycling train concept” con-
   Coughlin Company, a Utah-            mixed with additives and placed       sisting of tanker trucks, milling
based company providing mill-           back on the road.                     machines, crushing and screening
ing, CIR, heavy hauling, pulveriz-         The subbase created in this way    units, mixers, pavers and rollers
ing, and soil stabilization services    has the ability to keep underly-      — all designed and integrated into


46   asphalt contractor • March 2009
one comprehensive operation.                                                                                                                           A precut was
   In Coughlin’s CIR train, a Road-                                                                                                                    made on some
                                                                                                                                                       portions of
tec 950-hp RX-900 cold planer pro-
                                                                                                                                                       the project
vided the train’s propulsion, tow-                                                                                                                     where a width
ing a RT-500 cold recycler and a                                                          
								
To top