MATERIAL DRY CONTENT OF LIQUID ADMIXTURE (IS:9103-1999)

 Object:- For determination of dry material content of liquid admixtures. 

Reference standard:-  IS : 9103-1999- Concrete admixtures specification,

Apparatus:- 

1. Hot air Oven
2. Bottle and container 
3. Sensetive Balance accuracy 0.001 gm,

Procedure:- 

• 25 to 30 g of preheated, completely dry sand is placed in a wide mouth glass weighing bottle provided with ground glass stopper.
• The bottle with sand and stopper is placed in the electric oven and dried for 17±1/4 h at 105±2⁰ C.
• The bottle with stopper is allowed to cool to room temperature and its weigh is recorded to nearest 0.001 g.
• The stopper is then removed and 4 ml of liquid is evenly distributed over the sand with the help of a pipette.
• The stopper is then inserted and the bottle and stopper is placed in the oven for 17±1/4 h at 105±2⁰ C
• After drying it is cooled to room temperature and its weight is recorded to the nearest 0.001 g.

Calculation:-

• Weight of bottle and sand = W1
• Weight of bottle, sand and sample = W2
• Weight of bottle, sand and dried residue = W3-W1