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The completion of construction artsWHITE PORTLAND CEMENT

White Portland Cement is hydraulic pure white cement that can present various coloring with high strength and durability.

  • 순백색 Bright white
  • 수경성 Hydraulic
  • 고강도 High strength
  • 무석면 Asbestos free
  • 친환경 건축자재 Eco-friendly construction material
INQUIRY FOR THE DETAILS UNION Cement Process
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The completion of the world-class building
Only for PRODUCT 최고의 제품을 향한 신념
Only for PRODUCT Belief to the best product
Only for PRODUCT 최고의 제품을 향한 신념
The Selected Materials Strictly selected raw materials
Only for TECHNOLOGY 기술 연구를 통한 품질의 과학화
Only for TECHNOLOGY Precise quality control via R&D
Only for PRODUCT Belief to the best product
Technology to upgrade the value of space

The only producer of White Portland Cement in Korea – Union Corp. has been creating the value of space through the technology accumulated for more than half-century. With the market share over 80%, we are leading the industry by suppling best quality and its diversified products via continuous challenge and innovation.

  • Significant strength and durability
  • High purity raw materials
  • Various coloring by high bright whiteness
  • Excellent properties like contamination resistance & waterproofing
The Selected Materials Strictly selected raw materials
Chemical and physical properties
Division Subject KSL5204 Union’s WPC
Chemical Composition Fe2O3 ＜ 0.5 0.31%
MgO ＜ 5.0 1.85%
SO3(C3A＞8) ＜ 3.5 2.7%
Losson Ignition ＜ 3.0 2.5%
Insluble Residue ＜ 0.75 0.57%
Physical properties Fineness (Blaine)(cm2/g) ＞ 3,000 3,400
Stability, Autoclave expandability ＜ 0.8% 0.46%
Vicat Setting Time Initial Setting(hr:mn) ＞ 01:00 ＞ 03:00
Final Setting(hr:mn) ＜ 10:00 07:50
Compressive Strength (Mpa) Day 3rd ＜ 12.5 23.4
Day 7th ＞ 22.5 34.1
Day 28th ＞ 42.5 46.5
Whiteness (by Hunter colorimeter) ＜ 89 90.2
Package
  • •bulk, T/B
  • •20kg / 40kg in sack
Characteristics and application

It is highly useful as secondary products of artificial marble and various finishing materials aside from the primary purposes like plastering and terrazzo etc.

  • •Plastering of interiorsㆍexterior
  • •Monument, sculpture, park facilities
  • •Wall and floor of underground complex, subway, office
  • •Grout tile installation in sanitary facilities, pool
  • •Terrazzo tile, artificial granite, precast paver
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Cement manufacturing process
Mining and Crushing1~3

Mining limestone and conveying it into the hammer crusher.
Crushing and storing it in the limestone stockpile maintaining homogeneous quality.

Mixing and Milling 4~6

Mixing and milling the crushed limestone with other raw materials.

Sintering7~9

Sintering in the rotary kiln at 1450C after pre-heating.
Conveying the intermediate product, clinker through the cooler into the cement mill.

Producing and Delivering10~11

Milling it with gypsum (3-5%) and producing the cement. Storing it in Silo and delivering it in bulk or packed in ton-bag.