Stronger Concrete the Easy Way: UHPC Ready-Mix

Conventional concrete is all around us for a reason. Its workability and performance have been honed by construction crews for generations, used for everything from bridges to building columns to airport runways to two-seater park benches. The success of concrete is built on industry know-how and methods that work.

Ultra-High Performance Concrete (UHPC) improves the structural performance of our favorite building material without changing its entire make-up. Strength, weather resistance, and service life are just a few important properties improved by UHPC enhancements. Unfortunately, some industry vendors think that the only way to realize these benefits is to overhaul the entire production approach, rewriting established means of sourcing, mixing, distribution, and construction.

Concrete doesn’t need to reinvent itself. Batch plants already know how to mix and distribute. Ready-mix trucks already reach job sites efficiently and provide an easy method of distribution. So why are some UHPC manufacturers offering a boutique product that can only be assembled using their materials, their equipment, and their oversight? Importing sand, cement, admixtures, and batching equipment adds a big multiplier to an already competitive procurement market. The last thing contractors need is another layer of external requirements impacting their schedule and bottom line.

An ideal UHPC product is compatible with established production methods. It works with local supply chains and gives contractors confidence in their project plans. Contractors can save headaches and dollars because, with Cor-Tuf and only Cor-Tuf UHPC, batching and pouring is accomplished exactly like they have always been, instead of importing a whole new process using new specialized equipment for dramatically extended periods of time. They can avoid logistical challenges and environmental impacts by keeping it simple for your employees and subcontractors.

Cor-Tuf UHPC is a versatile addition to reliable concrete techniques. Our fiber components are completely compatible with our standard mixes which never require specialized sand or Portland cement shipped vast distances. Cor-Tuf CT-25 is batched using the cement and sand from your local suppliers, in your standard storage and mixing plant facilities, all by and with your current employees, supervisors and computerized control systems. Mix it in and pour it from a completely standard ready-mix truck. Maintain the same equipment and relationships built over generations of concrete work, with incredibly better results and no additional hassle.

Conventional concrete has paved its way to success over decades of refinement. Cor-Tuf dramatically eliminates the essential flaws inherent in traditional concrete not by wholesale changes in materials and methods, but by evolutionary changes which build upon all of the hard work and essential research of our ancestors. Cor-Tuf UHPC is the only advanced UHPC that can be successfully stored, batched, mixed, and handled in a conventional batch plant, and transported, mixed, and delivered exactly in the traditional manner and using the same equipment which you are using today. Forming, pumping, spraying, anything your customer requires, with a strength that could only be dreamed of in the past.

The strongest concrete is easy if you know how to find it. Your sand, your cement, our Cor-Tuf UHPC.

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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