Economy Thermocure Concrete Curing Box (Heat Only)

Economy Thermocure Concrete Curing Box

The Economy Thermocure Concrete Curing Box is a professional-grade field curing solution built for durability, portability, and compliance. Designed for concrete testing professionals, it delivers reliable temperature and moisture control during the critical first 48 hours of cylinder curing—helping ensure accurate compressive strength results every time.

With over 30 years of dependable in-field service, the Thermocure is trusted by engineers, inspectors, and contractors across the industry.

Key Features

• Superior Durability – Lightweight plastic construction is rust-proof and built to withstand demanding job site conditions
• Portable Design – Easy to transport between job sites without sacrificing performance
• Water-Based Heating & Cooling System – Uses water as the heating and cooling medium for consistent, uniform temperature distribution
• Large Cylinder Capacity – Uniquely holds up to 22 standard 6" x 12" concrete test cylinders (or 46 of the 4" x 8" cylinders)
• Built-In Thermostat – Automatically maintains the manufacturer set point of 73°F ± 3°F
• Standard Power Supply – Operates on standard 110V/60Hz AC power
• Fully Compliant – Meets all major industry standards for field curing

Compliance & Standards

The Economy Thermocure Concrete Curing Box meets the requirements of the following test methods:

• AASHTO M201
• AASHTO T126
• AASHTO T23
• ASTM C192
• ASTM C31
• ASTM C511
• CSA Standards

Technical Specifications

• Interior Dimensions: 18" x 54" x 17" (D x W x H)

• Exterior Dimensions: 23" x 22" x 68" (W x D x H)

• Weight: 115 lbs

• Electrical: 110V/60Hz, 20 amp minimum fuse

• Cylinder Capacity: 22 x (6" x 12") or 46 x (4" x 8")

• Max Ambient Temperature: 120°F

• Min Ambient Temperature: -15°F

• Curing Temperature Set Point: 73°F ± 3°F

• Construction: Rust-proof lightweight plastic

Thermocure I vs. Thermocure II — What's the Difference?

Thermocure offers two models to suit different climates and testing environments:

Thermocure I (Heat Only)

• Features a built-in thermostat that maintains the set curing temperature
• Best suited for moderate climates where ambient temperatures are unlikely to cause overheating
• In high ambient temperatures or when cylinders produce significant heat of hydration, ice or cold water may need to be added manually to bring the water temperature back within range

Thermocure II (Heat & Cool)

• Uses a thermocouple connected to an electronic controller that automatically monitors and regulates both heating and cooling
• Maintains required curing temperatures regardless of outside conditions—hot or cold
• Includes an automatic shut-off feature that activates when water temperature reaches a pre-determined high temperature set by the manufacturer
• Recommended for job sites with extreme or unpredictable weather conditions

Which model is right for you? Climate is the determining factor. If you're working in a region with significant temperature swings or extreme heat, Thermocure II Concrete Curing Box is the better choice. For more moderate environments, Thermocure I is a reliable and cost-effective solution.

Why Temperature Control Matters in the First 48 Hours

The first 48 hours of field curing are the most critical period for concrete test cylinders. During this time, concrete undergoes hydration—a chemical process that directly determines how much compressive strength it develops.

If test cylinders are exposed to temperatures that are too high or too low during this window, the hydration rate changes. This leads to inaccurate strength results that don't reflect the true performance of the concrete in place.

Poor temperature control during field curing can result in:

• Falsely high or low strength readings that misrepresent the actual mix design
• Failed test results even when the correct mix was delivered
• Project delays, costly disputes, and expensive retesting
• Compromised structural integrity decisions based on unreliable data

Thermocure eliminates these risks by maintaining a consistent 73°F ± 3°F environment with proper moisture levels, giving you results you can trust.

Frequently Asked Questions

What standards do Thermocure units comply with? Both Thermocure I and II comply with ASTM, AASHTO, and CSA standards.

Are cylinders included with the unit? No. Thermocure units do not come supplied with cylinders.

Is the unit watertight and weather-resistant? Yes. Both Thermocure I and II are fully watertight and weather-resistant, making them suitable for field use in a range of outdoor conditions.

Power & Performance

What power supply is required? Both models require 110V, 60Hz power with a minimum 20-amp fuse.

Can Thermocure units run on a generator? Yes. A generator with a minimum output of 2,500 watts per Thermocure unit is required.

How long does it take to reach the target curing temperature? Once water is added, turn the unit on and allow it to run for 24 hours before placing test cylinders inside. This ensures the water has fully stabilized at the required temperature before curing begins.

What are the ambient temperature limits?

• Maximum: 120°F
• Minimum: -15°F (Important: Do not operate if the water inside the unit is frozen)

Temperature Monitoring

How should I monitor internal temperature? A min/max thermometer or a data logging device is recommended to track temperature fluctuations throughout the curing period. Thermocure offers both options—contact us for more details.

What happens if temperatures fall outside the required range? Cylinders cured outside the required temperature range risk producing inaccurate compressive strength results. Thermocure II automatically compensates for temperature changes. Thermocure I may require manual intervention (adding ice or cold water) in very hot conditions.

Operation & Maintenance

Is assembly required upon delivery? Minimal setup is needed. Simply place the unit on a solid, level surface, fill with water, plug into an approved power supply, and allow it to run for 24 hours before adding cylinders.

How do I maintain my Thermocure unit? After each use, remove the stainless steel rack and clean any accumulated concrete sediment from the bottom of the unit. Preventing sediment build-up is the most important step to extending the life of your Thermocure.

How long will a Thermocure unit last? With proper maintenance, Thermocure units are built to last many years. In fact, many units have been in active field service for over 30 years.

Shipping, Warranty & Support

Where are Thermocure units manufactured? All Thermocure units are proudly manufactured in the United States, in Malta, New York.

How are units shipped? Units are shipped from Malta, NY via LTL freight carriers. Lead times and delivery durations vary depending on availability and destination. Contact us for current lead times.

What warranty is offered? Thermocure units come with a 1-year limited warranty.

Is technical support available? Yes. Our team is available to assist with any technical questions or field issues.

Can Thermocure units be customized for large or unique projects? While we don't typically offer customization, we're happy to discuss your specific project requirements. If you have special needs or are looking to purchase multiple units, reach out to us directly to explore your options.

Manufactured in: Malta, New York, USA

Designed for Field Applications: This lightweight Thermocure model is unbeatable for on-site convenience, providing reliable performance for curing concrete test specimens in various environments. Its durable, insulated design ensures long-term use, while its portable construction allows workers to transport it easily between locations.

Why Choose the Economy Thermocure Concrete Curing Box? Whether you're working in the field or a controlled lab environment, this curing box provides accurate, reliable storage for concrete test specimens. Its rugged build and advanced heating system ensure consistent curing conditions, making it an essential tool for construction, testing, and quality control professionals.

Invest in the Economy Thermocure Concrete Curing Box today and ensure your concrete specimens meet the highest standards, every time!