The legitimate blending of substantial fixings is a lot of importance as it influences the Quality of cement in its new state as well as the solidified state. A concrete is said to be well mixed if it fulfils the Following Requirements:
Concrete should be uniform in colour.
Concrete should achieve proper consistency for which is designed
The complete blending of all concrete ingredients.
Concrete Paste ought to cover all the outer layers of the total.
Step1: Mixing Platform:
A clean and water-tight stage ought to be utilized for blending concrete. Construct a Platform of bricks or lean concrete or iron sheets, of a size per the requirement of the volume of concrete to be mixed. Normally a stage made of an iron sheet having 3m2 in size with strips or kerbs is utilized.
Step2: Dry Mixing of Cement & Sand:
Spread out the deliberate amount of sand consistently on the blending stage. Dump the concrete on the sand and appropriate it consistently. Blend the Cement and sand in with the digging tools, turning the combination again and again until it is uniform in variety.
Step3: Dry mixing of coarse aggregates with cement sand mix:
Spread out the sand concrete combination indeed consistently on the blending stage. On top of this, spread the deliberate amount of Coarse Aggregate. Don’t dump at one spot; generally, the greater particles will more often than not carry out. Blend again somewhere multiple times by scooping from the middle to side, and afterwards back to the middle and again aside.
Step4: Addition of Water:
Make a downturn in the blended heap and empty gradually into half to 3/4 of the all-out amount of water required. While the material is turned in towards the centre with shovels, the remainder of the water is slowly, turning the mixture over and again until the colour and consistency and uniform throughout the pile.
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