data or calculations. DISCUSSION/CONCLUSION What does all of this mean? What The purpose of this paper was to introduce an accelerated test are the for pavement patching materials and to report on its implications? effectiveness in testing these materials for pothole patching. The effect of different materials on pothole performance is KEY MOVES evident between the HMA and the cold patch material. The HMA performed better than the cold patch material as -Remind reader of expected. The HMA achieved an RAI and SAI similar to the lab's purpose cold patch but at an applied number of cycles that is an order of magnitude higher (see Figure 6 and 11). -Sum up key findings, Results comparing the MMLS and the block test indicate that describing the block testing is a much harsher accelerated test. The MMLS patterns, rut curve was similar to the 17° block and much lower than the principles or 13° and 22° block. This is predictable since the 4,500 lb vertical relationships your load simulates a truck tire load which has no wander and is results show dynamic along the same footprint. -Interpret findings In conclusion, the proposed accelerated test has proved and link to successful in assessing pothole patching materials with respect expected to cyclic load applications, load magnitude, shear to normal stress ratios and freeze thaw cycles. Based on this research, an results/hypotheses acceptance criteria is proposed for patching materials: For HMA or background type materials, the RAI should not exceed 4 in2 at 20,000 cycles literature with a shear to normal stress ratio less than 40% with a vertical load of 4,500 lbs. For a stress ratio of 30% the RAI should not exceed 4 in2 at 30, 000 cycles. Figure 11 shows the selected
data or calculations. DISCUSSION/CONCLUSION The purpose of this paper was to introduce an accelerated test for pavement patching materials and to report on its effectiveness in testing these materials for pothole patching. The effect of different materials on pothole performance is evident between the HMA and the cold patch material. The HMA performed better than the cold patch material as expected. The HMA achieved an RAI and SAI similar to the cold patch but at an applied number of cycles that is an order of magnitude higher (see Figure 6 and 11). Results comparing the MMLS and the block test indicate that the block testing is a much harsher accelerated test. The MMLS rut curve was similar to the 17° block and much lower than the 13° and 22° block. This is predictable since the 4,500 lb vertical load simulates a truck tire load which has no wander and is dynamic along the same footprint. In conclusion, the proposed accelerated test has proved successful in assessing pothole patching materials with respect to cyclic load applications, load magnitude, shear to normal stress ratios and freeze thaw cycles. Based on this research, an acceptance criteria is proposed for patching materials: For HMA type materials, the RAI should not exceed 4 in2 at 20,000 cycles with a shear to normal stress ratio less than 40% with a vertical load of 4,500 lbs. For a stress ratio of 30% the RAI should not exceed 4 in2 at 30, 000 cycles. Figure 11 shows the selected What does all of this mean? What are the implications? KEY MOVES -Remind reader of lab's purpose -Sum up key findings, describing patterns, principles or relationships your results show -Interpret findings and link to expected results/hypotheses or background literature
Rhet_Moves_Lab_Report.docx