Question

The aggregate impact value of the aggregate used in_____

• A. Building concrete is less than 45
• B. Road pavement concrete is less than 30
• C. Runway concrete is less than 30
• D. All the options are correct

Answer 1

The correct option is D All the options are correct

S.No	Type of pavement material/layer	Aggregate impact value; (maximum%)
1.	Sub-base course and water bound macadam (WBM) layer	50
2.	WBM base course with bitumen surfacing	40
3.	Built-up spray grout, base course	40
4.	Wet mix macadam (WMM) base course and WBM surface course	30
5.	Dense Bituminous macadam binder courses	30
6.	Bituminous surface dressing carpet and bituminous concrete surface	30
7.	Cement concrete surface course for runways or roadways	30
8.	Cement concrete, base course, building concrete	45