Manufactured sand equal to natural sand
Ever wondered about the economic and ecological benefits of manufactured sand and how it is equal to natural sand?
Let me help you with a better understanding of its concept.
Sand is one of the vital ingredients in construction and daily a huge amount of sand is consumed which is directly causing hazard to our river beds and ecosystem, As it is extracted by digging riverbeds or river banks causing excessive depletion of natural resource and thus creating a huge gap in demand and supply with major hike in price and making it unaffordable. The shortage of good natural sand has raised the question of concern among the construction industry and to solve this challenge manufactured sand is developed, which is also one of the better options against poor quality sand, particularly containing silt.
By using crushed sand in construction work has not even helped in increasing supply but also played a major role in affecting price and Mother Nature.
To elaborate, here I give you a brief comparison of properties between these two so that you can make a correct choice.
| Manufactured (crushed) sand | Natural sand |
| Source-
Crushing rocks, quarry stones and large aggregate pieces. |
Source-
Excavated from river beds / river banks |
| Shape-
Cubical and angular ,rough texture hence better for construction |
Shape-
Round & smooth surface |
| Strength-
Compressive & flexural strength are higher, make it more powerful |
Strength-
Compressive & flexural strength is lower |
| Eco friendly-
It causes less damage to environment.
|
Eco friendly-
Sand depletion has hazardous effect on riverbeds reducing ground water and environment.
|
| Adulteration-
less adulteration |
Adulteration-
Acute shortage causes more adulteration; saline sea sand is common source of mixing in coastal areas. |
| Silt content-
Less chances as it gets manufactured |
Silt content-
River beds contain silt due to soil erosion thus it need to be washed. |
| Moisture content-
No moisture content
|
Moisture content-
Moisture is present between particles hence it affects concrete mix design and quality |
| Over sized-
Artificially created so no oversized material. |
Over sized-
Screening is needed as oversized material is present in natural sand. |
| Marine slump –
No chance as created artificially. |
Marine slump-
Contains marine products such as grass, algae, clay lumps, bones, shells, mica etc. which are harmful to properties of concrete. |
| Specific gravity-
Approximate 2.73 ( depends on parent rock) |
Specific gravity-
Approximate 2.65 (depend on rock at catchment area) |
Advantages of manufactured sand-
- Eco friendly
- Better concrete and mortar quality.
- Uniformly graded aggregates.
- Higher durability and strength.
- No slump
- Bulk density 1.75 Kg/m3
- Water retentivity of mortar is less.
- Cheaper than natural sand.
Manufacturing process–
Manufactured sand is sand produced by crushing rocks, larger aggregates pieces or quarry stones into sand-sized particles. The produced sand is then sieved and washed to remove fine particles and impurities, and tested for various quality aspects before it is deemed fit as a construction aggregate. Thus increased availability of crushed sand (manufactured sand) has result in low demand of river sand & making it cheaper.
Fine crushing and separation requires specialized technology and knowledge. And thus raj mineral brings you with finest manufactured sand with high standards of quality testing. For more information please contact on 9414169137, 9799496137,.
