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Sinsung Plant
By crushing aggregate extracted from the stony mountain, the aggregates are broken into for diverse use and stored so that they could be sold
Aggregate Extraction Method | Rock (limited to crushed stone) in rivers, forests, sea (shared surface) other ground, underground. It is used as the basic material for construction such as pebbles or sand |
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Concrete Standard Specifications and Construction Standard Specifications | Fine aggregate, which is mixture of cement and water to make concrete or mortar, smashed sand, pebbles, smashed thick aggregate, sea sand, shaft furnace slag fine aggregate, shaft furnace slag thick aggregate and other similar materials |
Korea Industrial Standard (KSF 2523) | As a construction use mining material that can form a lump by integrating with concrete, mortar, lime mix, bituminous mixture, it is chemically stable. Yet mixed materials do not apply. |
- Fine Aggregate
It passes the standard size of 10mm and almost passes 4.76mm. It is an aggregate that leaves only 0.074mm. I has grain diameter of 5mm or less.
Meanwhile, the Ministry of Land, Transport and Maritime Affairs construction specification define it as aggregate that passes 85% or more of weight ratio from 5mm having passed all of 10mm. This is because on site, fine aggregates are sometimes formed of those of 5mm or more, thus 15% extra has been set.
- Thick Aggregate
A thick aggregate refers to one with grain diameter of 5mm or more and in term of weight ratio, it means having 85% or more left from the 5mm.
- Natural Aggregate
As an aggregate made of natural reactions regardless of the site, there is river sand, river pebble, sea pebble, sea, pebble, land sand, mountain sand and mountain pebble
- Artificial Aggregate (crushed stone or sand)
Made by crushing rock
- Artificial Light Aggregate
With shale, clay and coal as its main component, it is made artificially. As there is a lot of air gap inside the aggregate, the absolutely dry ratio is less than 2.0 for fine aggregates and less than 1.6 for light aggregates
- Normal Aggregate
2.50~2.65: Normal aggregate used for general constructions
- Light Aggregate (2.50 or less, Jeju Island pebbles)
It is classified into natural and artificial aggregate. The insides of the aggregate have lots of air and the surface is of glass film. The fine aggregate has an absolute dry density of less than 0.0018g/m3 and the thick aggregate less than 0.0015g/m3
- Heavy Aggregate 2.70 or more
An aggregate that weighs more than barite, limonite and magnetite
1st Crush Use (jaw crusher/vibration feeder)
2nd Crush Use (impact crush)
Selection and Transfer (screen/conveyor)
Storage Use (in between)
Removing Dust Scattering (Bag Filter)