(3 Marks) 8. Given that the mean seven-day maximum pavement temperature for Lusaka is estimated at 42°C with a standard

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3 Marks 8 Given That The Mean Seven Day Maximum Pavement Temperature For Lusaka Is Estimated At 42 C With A Standard 1 (60.29 KiB) Viewed 50 times

(3 Marks) 8. Given that the mean seven-day maximum pavement temperature for Lusaka is estimated at 42°C with a standard deviation of 2.5°C. The mean minimum pavement temperature is -6°C with standard deviation of 1.5°C. Use the table below to determine the suitable PG grade asphalt needed at 98% reliability (5 marks) Binder Grade Specifications High Temperature Grades (°C) Low Temperature Grades (°C) PG 46 -34,-40, -46 PG 52 -10,-16, -22, -28, -34,-40, -46 PG 58 -16, -22, -28, -34,-40 PG 64 -10,-16, -22, -28, -34,-40 PG 70 -10.-16, -22, -28, -34, -40 -10,-16, -22,-28,-34 PG 76 PG 82 -10,-16, -22, -28,-34