ECLIPSE® concrete shrinkage reducing admixtures

Get crack-free structures with ECLIPSE®.

What causes concrete shrinkage?

Shrinkage and curling concrete is the result of changes to the moisture of the concrete during the drying process. A balance between the design mix and drying process is needed to produce durable, high strength and crack resistant concrete.


ECLIPSE® Product Documents

Product Name Product Data Sheet
Product Data Sheet
Products & Accessories


  • Product Name
  • Description
  • Key Benefits
  • Applications Type

Eclipse® Floor Shrinkage Reducing Admixture is a liquid admixture specially formulated for use in indoor slab-on-grade concrete construction.

Key Benefits
  • Control drying shrinkage
  • Control cracking
Application Type
  • For mortar and paste compositions, where the total mix water amount is higher than for concrete

How do ECLIPSE® products fight shrinkage?

ECLIPSE®  is a liquid admixture that dramatically reduces drying shrinkage and the potential for cracking and curling in full or partially restrained concrete flooring and paving. ECLIPSE® products reduce the surface tension of pore water.  Indoors or outdoors, on-grade or above, ECLIPSE® shuts down shrinking, cracks and curling while increasing durability, lowering maintenance costs and extending structure service life.  Leading the innovation in this area since 1997, GCP continues to invest to bring new solutions for crack reduction in concrete.

ECLIPSE® for shrinkage in structures

ECLIPSE® 4500 is a liquid admixture formulated explicitly for use in air-entrained structures such as bridge decks, parking garages, marine structures, containment structures and any other outdoor concrete structure that's subject to freeze-thaw conditions. ECLIPSE® 4500:

  • Reduces shrinkage, cracking and curling
  • Enables normal performance of air-entraining admixtures
  • Can be used in ready mix, precast and prestressed concrete as well as mortar, grout and shotcrete 
  • Provides enhanced durability for longer usable life
  • Reduces maintenance and repair costs

Controlling shrinkage and curling in floors

ECLIPSE® Floor and ECLIPSE® Floor 200 are shrinkage-reducing liquid admixtures specifically designed for use in non air-entrained concrete applications such as indoor slab-on-ground construction. ECLIPSE® Floor contains no expansive material, but acts chemically to dramatically reduce the primary internal forces that cause drying shrinkage and curling. They can help achieve: 

  • A higher value floor with less cracking due to shrinkage
  • A flatter surface due to less curling
  • Less joint maintenance cost due to minimum joint openings
  • Longer service life of the structure due to increased durability

Worldwide technical support

Different projects need different concrete. ECLIPSE® products are compatible with the complete line of GCP admixtures, and our global technical support team can offer you advice on the perfect concrete mix design.