Cold-In-Place Recycling using Asphalt Emulsion for Stabilization of ...

More documents

Recommendations

Info

166 USING ASPHALT EMULSION TO STABILIZE LOW VOLUME ROADS 15000 14500 Marshall Stability (N) 14000 13500 13000 12500 12000 11500 11000 8 9 10 11 12 13 14 Percent Total Liquid Content 9 Percent Total Liquids 10 Percent Total Liquids 11 Percent Total Liquids 12 Percent Total Liquids 13 Percent Total Liquids Figure 20 Effect of Total Liquids Content on Marshall Stability for Cold In-place Recycled Granular Patch Materials containing Seven Percent Slow Setting Cationic Asphalt Emulsion SS-1c
BAKER, WOURMS, BERTHELOT & GERBRANDT 167 15000 14500 Marshall Stability (N) 14000 13500 13000 12500 12000 11500 11000 0.025 0.030 0.035 0.040 0.045 0.050 Retained Gravimetric Water at Testing (kg) 9 Percent Total Liquids 10 Percent Total Liquids 11 Percent Total Liquids 12 Percent Total Liquids 13 Percent Total Liquids Figure 21 Effect of Retained Gravimetric Water Content in a Sample at Time of Testing on its Marshall Stability for Cold In-place Recycled Granular Patch containing Seven Percent Slow Setting Cationic Asphalt Emulsion SS-1c 7 SUMMARY, CONCLUSIONS AND RECOMMENDATIONS Recent rationalization of the transportation in Canada has significantly increased the amount of truck traffic on the Saskatchewan low volume road system. As a result, the thin membrane surfaced (TMS) and asphalt mat on subgrade (AMOS) roads are experiencing commercial truck loads which they were never designed to carry. Consequently, many of these low volume roads are rapidly deteriorating, and SDHT is investigating cold in-place recycling as an alternative to strengthen Saskatchewan low volume roads. The objective of this study was to evaluate cold in-place recycled and asphalt emulsion stabilized mixes from Highway 15. This study revealed that moisture content, asphalt emulsion, cure rate, and recycled material variability could have a significant impact on the behaviour of cold in-place recycled asphalt emulsion systems. Current asphalt emulsion mix design methods were found to be diverse, and rely a great deal on empiricism and experience. As a result, conventional mix analysis methods may not provide the degree of control required to quantify performance related properties. The optimum total liquids content for compaction of asphalt emulsion stabilized mixes is often assumed to be equal to the optimum water content for compaction of unmodified soil, as per the standard Proctor moisture-density relationship. However, this assumes that all asphalt emulsions exhibit viscosities and compaction properties similar to that of water. This study showed that different asphalt
Page 1 and 2: COLD IN-PLACE RECYCLING USING ASPHA
Page 3 and 4: BAKER, WOURMS, BERTHELOT & GERBRAND
Page 19: BAKER, WOURMS, BERTHELOT & GERBRAND
Page 23: BAKER, WOURMS, BERTHELOT & GERBRAND

Cold-In-Place Recycling using Asphalt Emulsion for Stabilization of ...

Create successful ePaper yourself

Delete template?

Save as template?