M35 Concrete Mix Design & IS code

quiz answer:

  CAMBER  - a tilt built into a road at a bend or curve, enabling vehicles to maintain speed.
                                                         
Design mix : M35

  Mix ratio ( 1 : 1.79 : 2.57 )
Quantity:
   cement : 410 kg/meter cube
   20mm Jelly : 632 kg/meter cube
   12.5mm Jelly : 421 kg/meter cube
   River sand : 735 kg/meter cube
   Total water : 200 kg/meter cube
   Admixture : 0.7%
   Fresh Concrete Density : 2400 kg/meter cube

IS CODE:

   IS 1727  - Method of test for pozzolanic material  ( in 1967)
   IS 3343 - Specification for fiber insulation board  
   IS 2556 - Specific requirement of Universal Water Closet ( in part 15 )
   IS 1080 - Shallow Foundation in Soil(other than Raft,Ring and Shell) ( in 1985 )
   IS 822   - Inspection of Weld

Today's quiz:

  what is meant by BLOTTER ?