Ready Mixed Concrete Division

HOME  >  Ready Mixed Concrete Division  >  Specifications

Specifications

specification
Type Max. Dimension
of Coarse Aggregate(mm)		 Slump or Slump Flow(mm) Nominated Strength Mpa (=N/mm²)(¹)
18 21 24 27 30 35 40 45 50 55 60 Bending
4.0(²)		 Bending
4.5(²)
Common Concrete 20, 25 80, 100, 120, 150, 180 ○ ○ ○ ○ ○ ○ ○
210 ○ ○ ○ ○ ○ ○
40 50, 80, 100, 120, 150 ○ ○ ○ ○ ○ ○ ○
Light Weight Concrete 15, 20 80, 100, 120, 150, 180, 200 ○ ○ ○ ○ ○ ○ ○
Packing Concrete 20, 25, 40 25, 65 ○ ○
High Strength Concrete 20, 25 80, 100
120, 150, 180, 210 ○ ○
500, 600 ○ ○ ○ ○
Type
Type Characteristic
Common Concrete Concrete made with common aggregates with unit mass around 2.300kg/㎡ and it designates 18MPa~35MPa by KS F 4009 standard.
Light Weight Concrete Concrete manufactured with reduced density by using part, or all,of a lightweight aggregate
(natural and artificial lightweight aggregate).
Packing Concrete Concrete placed uniformly and compactly for durability against weather or traffic load and procures sufficient surface smoothness for the driving performance of vehicle.
High Strength Concrete Compressive is used for buildings with many stories, large sized, or specialized buildings that require strength over 40MPa.
(High strength light aggregate concrete has over 27MPa)
Low Heat Concrete
Concrete with minimized hydration heat to prevent cracks caused by the difference in the inside temperature due to the hydration heat of cement and dry shrinkage of mass concrete for a large amount.
Antiwashout Underwater Concrete Water tightened concrete by giving it strong viscosity and fluidity in order to prevent from material separation such as cement discharge into water when placing concrete underwater.
Cold Water Concrete Concrete that can be used in winter when concrete can freeze due to a fall in the temperature under 4℃ during concrete curing.
Hot Weather Concrete Concrete that can be used in summer when cracks can occur in the concrete due to an excessive rise in temperature
(an average of over 25℃ in a day).
Mass Concrete Concrete with minimized hydration heat to prevent cracks caused by the difference in the inside temperature due to the hydration heat of cement and dry shrinkage of mass concrete for a large amount.
Shotcrete Shot concrete (or sometimes mortar) conveyed through a hose and pneumatically projected at high velocity (Cement gun, Bonsuctor, Jetcrete, etc.) onto a frame and structure for the purpose of thin wall plastering, rustproof, etc.
Heavy Concrete Concrete has higher weight per unit volume than common concrete, usually heavier than 2,600kg/㎥. This is also called as shielding concrete because the main land-based application is for radiation shielding (medical or nuclear). Offshore, heavyweight concrete is used for ballasting for pipelines and similar structures.
Waterproof Concrete Waterproofed concrete keeps water out of the concrete by increasing the density of concrete. The size and volume of these pores is dictated by the water/cement ratio and water-cement ratio is less than 50%