|
Let us now compare M-sand with the river sand.
Sl.No.
| Description | M-sand | River sand |
1.
|
Availability
|
Artificial
|
Natural
|
2.
|
Oversized materials
|
____
|
2 - 8 %
|
3.
|
Silt/clay
|
____
|
4 - 20 %
|
4.
|
Organic & marine impurities
|
____
|
1 - 4 %
|
5.
|
PH value
|
10 to 11
|
8 to 9
|
6.
|
Sieving
|
Not required
|
Required
|
7.
|
Price
|
Rs. X /-
|
Rs. 1.4 to 1.8X/-
|
8.
|
Segregation
|
More (can be controlled
by plasticizers)
.
|
Less in comparison.
|
9.
|
Workability
|
More w/c ratio
|
Standard w/c ratio
|
10.
|
Bulk density
|
15.1 KN/cum
|
14.5 KN/cum.
|
11.
|
Vibration
|
Less in comparison
|
More in comparison
|
12.
|
Usage
|
Recommended for concrete and brickwork
|
For concrete, brickwork &
plastering.
|
13.
|
Concrete strength
|
More or equal
|
Less or equal
|
14.
|
Quality
|
Can be controlled in the
manufacturing process
|
Depends upon the available material.
|
15.
|
Eco-friendly
|
Less harmful
|
More harmful
|
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