(Solved): A Superpave mix design was conducted for a pavement construction project on a six-lane urban highwa ...

A Superpave mix design was conducted for a pavement construction project on a six-lane urban highway with a traffic ESAL of $8,000,000$. The mix design was conducted for three blends. Each blend is composed of five different materials (three coarse materials and two fine materials). The properties of the aggregates and the composition of each of the three blends are given in the Table 1. The selected asphalt cement is a PG $58?28$ non-modified and its bulk specific gravity is $1.03$ After conducting the mix design for the three blends, it was found that the optimum binder content for blends $\#1,\#2$ and $\#3$ are respectivcly $4.6\%,4.8\%$ and $5.4\%$. Two asphalt specimens of each hlend were then prepared at the optimal binder content and compacted to ${\mathbf{N}}_{\max }$ with the gyratory compactor. The data obtained from the compaction for the six specimens (two at each binder content) and the measurements for the bulk specific gravity values are presented in Table 2 . Tab a) Determine the combined bulk specific gravity $\left({\mathrm{G}}_{\mathrm{sb}}\right)$ and combined apparent specific gravity of the aggregates $\left({\mathrm{G}}_{\mathrm{sa}}\right)$ for each blend. b) Calculate estimated values for the effective specific gravity of aggregates $\left({\mathrm{G}}_{\mathrm{sc}}\right)$ and the percentage of absorbed asphalt $\left({\mathrm{P}}_{\mathrm{ba}}\right)$ for each blend. c) Calculate the values of estimated bulk specific gravity for each specimen $\left(G_{mb}\right)$ at $N_{\text{ini }},N_{\text{des }}$ and ${\mathrm{N}}_{\max }$ then correct these values based on the values based on the measured ${\mathrm{G}}_{\mathrm{mb}}$ at ${\mathrm{N}}_{\max }$. d) Calculate the value of the ${\mathrm{G}}_{\mathrm{mm}}$ of each specimen at the binder content for each blend. e) Determine the $\%G_{mm}$ at $N_{\text{ini }},N_{\text{des }}$ and $N_{\text{max }}$ for each specimen and find the average value for each blend. f) Calculate the other volumetrics for each blend and determine the selected mix design between the three blends. Use to following table to show vour calculation