Lab pavement superpave mix design performance grade pg bind

Lab pavement

superpave mix design : performance grade (pg) binder identification

1. what are the different PG binder used in illinois, washington , new mexico and louisiana?

comment on the variation of using different PG binder in these states

2. Does illinois use only one type of PG binder? justify on your answer

Solution

(1)Answer:-

Name of states                                                          PG binder use

Illinois                                                                  PG 64 – 22 , PG 70 -22

Washington                                                    PG 58 – 22, PG 64 -22 , PG 64 – 22

New Mexico                                                    PG 58 – 22 , PG 64 -28 ,PG 70 -28

Louisiana                                                               PG 64 -22 , PG 67 -22

There are infinite grade of PG binders .This depend on climatic condition around state. The standard notation for PG binder is PG XX –YY where XX is the average

maximum pavement design temperature for 7 days and YY is lowest temperature.

(2) Answer:-No illinois use many type of PG binder .This depends on climatic condition. PG 64 -22 , PG 70 -22 etc are used in Illinois state.