Storage and Handling of aggregate
As per IS 4082 – Aggregates shall be stored at site on a hard dry and level patch of ground. If such a surface is not available, a platform of planks or old corrugated iron sheets, or a floor of bricks, or a thin layer of lean concrete shall be made so as to prevent contamination with clay, dust, vegetable and other foreign matter. Store sand and coarse aggregates of different size fractions in separate stock piles, on firm ground or platform.
If aggregates are stored directly over firm ground, do not use the material in the bottom 10 cm portion( This will be a “Dead storage”).
Provide ample space between adjacent stock piles (about one meter).
Build up the stock pile in horizontal or gently sloping layers. Do not allow dumping of aggregates down the sloping sides of big stock piles.
Do not allow wheel loaders, trucks and bull dozers over the stock piles.
Maintain the amount of under sized fraction in each aggregate with in the limit specified in IS 383.
Do not blend two sizes of sand by placing them alternatively in stock piles or trucks. Always maintain additional stock piles and batch them separately in to the mixer. If the aggregates have been washed or received wet, allow atleast 48 hours for the excess water to drain away
As far as possible avoid screening and washing of aggregates at the concreting site. The same should be done at the source or crusher if required.
Aggregates may be covered with low roofed sheds if concreting is done at temperatures above 40 o C
As per IS 4082 – Aggregates shall be stored at site on a hard dry and level patch of ground. If such a surface is not available, a platform of planks or old corrugated iron sheets, or a floor of bricks, or a thin layer of lean concrete shall be made so as to prevent contamination with clay, dust, vegetable and other foreign matter. Store sand and coarse aggregates of different size fractions in separate stock piles, on firm ground or platform.
If aggregates are stored directly over firm ground, do not use the material in the bottom 10 cm portion( This will be a “Dead storage”).
Provide ample space between adjacent stock piles (about one meter).
Build up the stock pile in horizontal or gently sloping layers. Do not allow dumping of aggregates down the sloping sides of big stock piles.
Do not allow wheel loaders, trucks and bull dozers over the stock piles.
Maintain the amount of under sized fraction in each aggregate with in the limit specified in IS 383.
Do not blend two sizes of sand by placing them alternatively in stock piles or trucks. Always maintain additional stock piles and batch them separately in to the mixer. If the aggregates have been washed or received wet, allow atleast 48 hours for the excess water to drain away
As far as possible avoid screening and washing of aggregates at the concreting site. The same should be done at the source or crusher if required.
Aggregates may be covered with low roofed sheds if concreting is done at temperatures above 40 o C
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