Product Information

See what makes Cor-Tuf UHPC unique

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Cor-Tuf UHPC (CT25) is a class of concrete that is exceptionally strong and durable. Originally developed by the U.S. Army Corps of Engineers, it combines form and function with strength and resiliency. 

Cor-Tuf CT25 is our standard material formation. CT25 is a highly versatile mix that can be used as a direct replacement for standard concrete. It is compatible with all industry standard production techniques, ranging from large scale precast facilities down to small, cast-in-place applications. This includes (but is not limited to):

  • Pre- and post-tensioned structure component construction
  • Precast panels
  • Field-cast structural connections
  • Wear surface overlays
  • Marine installations
  • Injection and extrusion techniques
  • Tilt-up construction
  • Blast and corrosion resistance
  • Cast-in-place joints
Constituents, Packaging, and Yield

Our pre-mix contains proprietary pre-blended constituents, local masonry sand, and portland cement per QC manual. Complete pre-mix (with sand and cement) available upon request. Our liquid admixture acts as a corrosion inhibitor and a high range water reducer, resulting in an impermeable UHPC mix. Our steel fibers measure 0.008 inches (0.20 mm) in diameter and are 0.5 inches (13 mm) long. Not included in pre-mix. Water will be provided by the contractor in accordance with QC manual.

See our Product Data Sheet for additional details on delivery quantities, measurements, and yields.

Constituents, Packaging, and Yield

Our pre-mix contains proprietary pre-blended constituents, local masonry sand, and portland cement per QC manual. Complete pre-mix (with sand and cement) available upon request. Our liquid admixture acts as a corrosion inhibitor and a high range water reducer, resulting in an impermeable UHPC mix. Our steel fibers measure 0.008 inches (0.20 mm) in diameter and are 0.5 inches (13 mm) long. Not included in pre-mix. Water will be provided by the contractor in accordance with QC manual.

See our Product Data Sheet for additional details on delivery quantities, measurements, and yields.

Batching

CT25 is highly versatile and can be batched in a variety of solutions ranging from high yield, industrial applications down to single yard solutions. However, high-shear mixers are recommended to properly batch CT25. Cor-Tuf is available to consult prior to batching for evaluation of equipment.

Please refer to the Product Data Sheet for more information on batching protocols.

Batching

CT25 is highly versatile and can be batched in a variety of solutions ranging from high yield, industrial applications down to single yard solutions. However, high-shear mixers are recommended to properly batch CT25. Cor-Tuf is available to consult prior to batching for evaluation of equipment.

Please refer to the Product Data Sheet for more information on batching protocols.

Placing

CT25 can be poured using a variety of industry standard means and methods. Cor-Tuf has successfully poured CT25 in ready mix trucks, Tuckerbilt dispensers, skid-steer auger buckets, and all manner of conventional wheelbarrows, buckets, and buggies.

See our Product Data Sheet for additional guidance on placing.

Placing

CT25 can be poured using a variety of industry standard means and methods. Cor-Tuf has successfully poured CT25 in ready mix trucks, Tuckerbilt dispensers, skid-steer auger buckets, and all manner of conventional wheelbarrows, buckets, and buggies.

See our Product Data Sheet for additional guidance on placing.

Long-Term Cost Savings

Cor-Tuf UHPC provides dramatically improved life cycle costs. Choosing CT25 for your project results in the following savings:

  • Construction can be completed quicker with prefabricated UHPC elements. 
  • Less material is required for construction, resulting in a lower gross weight.
  • Size and complexity of footing and support requirements are reduced.
  • Extended longevity virtually eliminates maintenance costs and drastically extends the life of the product. 
  • Durability and resistance to natural forces such as freeze/thaw cycles, storms, and water damage provides extensive life cycle savings over time.
Long-Term Cost Savings

Cor-Tuf UHPC is the ultimate material for low impact design, dramatically reducing life cycle costs. When compared to steel, Cor-Tuf UHPC is more cost-effective and durable, making it the superior choice. Choosing C25 for your project results in the following savings:

  • Construction can be completed faster with prefabricated UHPC elements
  • Less material is required for construction, reducing transportation and machinery costs
  • Sizing and complexity of footing and support requirements are reduced
  • Extended longevity virtually eliminates maintenance costs and supports environmental conservation
  • Durability and resistance to natural forces such as freeze/thaw cycles, storms, and water damage provides extensive life cycle savings over time.

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PRODUCT DATA SHEET

CTL Group Material Testing Results*


Concrete Performance
Test MethodCuring Conditions at CTL Group AgeTest Results
Compressive StrengthASTM C 3973°F/100% RHat 1 day9,050 psi
Compressive StrengthASTM C 3973°F/100% RHat 3 days11,140 psi
Compressive StrengthASTM C 3973°F/100% RHat 14 days16,000 psi
Compressive StrengthASTM C 3973°F/100% RHat 28 days21,000 psi
Compressive StrengthASTM C 3973°F/100% RHat 56 days23,000 psi
Compressive StrengthASTM C 1856Controlled Curingat 28 days25,500 psi
Length Change of HHCASTM C 15773°F/50% RH28 days
(26 days Dry)
-0.033%
Chloride PenetrabilityASTM C 1202
AASHTO T277
73°F Limewater
190°F water 5 days;
190°F air 2 days;
73°F water until testing
28 days
28 days
≤100 (Negligible)
≤100 (Negligible)
** Flexural StrengthASTM C 160973°F Limewater28 daysL/600 = 2800 psi or better
** Flexural StrengthASTM C 160973°F Limewater28 daysL/150 = 1500 psi or better
Direct Tensile StrengthAASHTO T39773°F Limewater28 days1000 psi or better
Modulus of ElasticityASTM C 46973°F Limewater28 days6800 ksi
Abrasion Resistance, Ave LossASTM C94473°F Limewater58 days0.016 oz
Freeze Thaw Resistance RDMASTM A 66673°F Limewater28 days600 cycles, 96%

Notes:
*Testing results confirmed by independent laboratory CTL
Group. Results are based on laboratory mixes.
**Data per UCF Material Study 5/10/2022
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Client: Cor-Tuf UHPC CTL Project No: 059330
Date: 1/20/2020

What Makes UHPC Ultra-High Performance

UHPC achieves its superior performance through a dense nano-scale matrix that is far less permeable than conventional concrete. This matrix is combined with steel fiber reinforcement, which provides exceptional ductility and crack resistance.

Though exact formulations and results vary by producer, UHPC generally incorporates a blend of Portland cement, sand, supplementary cementitious materials, chemical admixtures, and fibers – resulting in a material dramatically stronger, tougher, and longer lasting than traditional concrete.

Cor-Tuf Outperforms Conventional Concrete and Other UHPCs

Feature Cor-Tuf UHPC Conventional Concrete Other UHPCs
Compressive Strength 25,000+ psi 4,000–6,000 psi 18,000–22,000 psi
Ease of Placement ✅ Standard Equipment ✅ Standard Equipment ❌ Specialized Tools
Bonding & Ductility Extreme Low Moderate
Freeze-Thaw Resistance 1000+ Cycles 20–80 Cycles 300 Cycles
Chloride Permeability Near Zero High Low
Lifespan 100+ Years 25–30 Years 50–60 Years

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PRODUCT DATA SHEET