Experimental study for asphalt emulsion treated base
Asphalt emulsion has been used for base material stabilization with Full Depth Reclamation (FDR) process for pavement rehabilitating in a few TxDOT districts. Results from these practices were quite different. The initial performance of two projects on US287 constructed around 2000 in the Amarillo District has been found to be satisfactory. However, the Yoakum District has reported problems with asphalt emulsion for base work in a project. The preliminary conclusion from these is that it is not necessarily the emulsion or the mix design but the practice of construction. Considering that the use of asphalt emulsion is relatively new and in the experimental stage, results in inconsistent results from different construction practices implemented by contractors. TxDOT has drafted a special specification for the use of asphalt emulsions treatment in road mixing yet it does not specify a concrete protocol for field practice. On the other hand, contractors are currently using their experience as a guideline in construction. In this project, the trial version of the TxDOT special specification, is evaluated based on the results from laboratory and field tests. The output of this research project includes: laboratory mix designs for the materials obtained from a number of construction projects, a guideline for the construction of emulsion treated bases and results from a series of parametric studies that show which parameters may have significant impacts on the engineering properties of emulsion-treated base materials and on the performance of emulsion-treated bases.
Moss, Steven Phillip, "Experimental study for asphalt emulsion treated base" (2008). ETD Collection for University of Texas, El Paso. AAI1456737.