Concrete Curing Box Concrete Curing Box. Darwin Chambers has been a leading concrete curing box manufacturer for over 25 years. We pride ourselves on the quality, durability, and innovation of our environmental chambers, as well as the competency and quality of our customer service team. We offer our cutting-edge units and impeccable service plans to companies throughout North America and around the globe. If you need precise and accurate temperature and humidity controls for the testing and storing of concrete, asphalt, or other specimens, look no further than a concrete curing box from Darwin Chambers. Call us today at 877-783-6774 or contact us online for a free quote. Every concrete curing box from Darwin Chambers complies with ACI, ASTM, AASHTO, and CCRL standards. Darwin Chambers' versatile concrete curing box line contains a portable concrete curing box for work in the field and transportation that can fit five 6″x 12″ concrete test cylinder molds and ten 4″x 8″ concrete test cylinder molds. We also have stationary models and custom concrete curing rooms for larger samples or longer-term testing. You can view the specifics of each model by clicking the buttons below: MC70QT (Portable) MC030 (Single Door) MC060 (Double Door) Why You Need Concrete Curing Testing According to a report from ACI Committee 308, curing is "the process by which hydraulic-cement concrete matures and develops hardened properties over time." You need to be sure that your concrete is curing correctly for the best outcome in your project. By using a Darwin Chambers concrete curing box, you can test to make sure your concrete: Doesn't develop cracks, also known as crazing Has the appropriate durability and strength Has the correct water tightness Is resistant to abrasion Has better volume stability Is resistant to freezing and thawing While the technicians who prepare the concrete test cylinders and the lab the test is sent to will be responsible for a large portion of the accuracy of the testing, their work will mean nothing if the reliability of the sample is put at risk because of a poor concrete curing box. You need to know the exact conditions under which the samples were kept. That's why every Darwin Chambers portable concrete curing box has a control resolution of 1°F. Other features include: On job site protected storage of concrete test specimens and reliable heating Comes with comfort grip no-crush handles for easy transport No need to open to see temperature reading or set point of thermostat The plate is thermally protected from overheating Digital temperature controller Measuring (reading) resolution: 0.5°F Control setpoint: 73°F Data retention: Yes Xtreme technology uses an insulated lid and extra insulation in the walls EZ-Clean top wipes clean and the lead-resistant channel drain makes it easy to empty any excess water without tilting the cooler Low CO2 insulation for reduced carbon emissions from foam manufacturing Made in the USA Correct Procedures for Concrete Curing Samples in the Field ASTM and ACI have strict standards for how concrete samples are taken and stored in a concrete curing box. To ensure compliance you must take the following steps: The concrete must be made, cured, and tested by an ACI-Certified Grade 1 Concrete Field Technician. The concrete cylinder must be a "representative sample," made up of two different samples from the middle of the concrete load. The technician must record the temperature of the ambient air and the concrete. The technician must run a slump test and an air test. The cylinders must be placed in a concrete curing box where they will not be disturbed and are kept within 60°F and 80°F at all times. Once you have a concrete sample, you must keep it well-preserved in a concrete curing box until you can perform both in-field and laboratory tests to measure the concrete's compressive strength: In-Field Test: A Schmidt hammer fires a spring-loaded mass at the concrete in order to measure the value of the rebound. Laboratory Test: A compressive strength lab test will apply force to each end of the cylinder until it breaks to see how much pressure the concrete can hold up against. Why Choose a Darwin Chambers Concrete Curing Box In addition to industry-leading technologies and precise and durable environmental rooms and reach-in chambers, Darwin Chambers also offers a variety of services to our concrete curing box clients, including: Preventive maintenance to ensure your samples are maintained and there is no disruption in your operations. Calibration so you can know you are in compliance with all regulatory oversight. Three-step validation and qualification so you know your concrete curing box is meeting the specifications you need it to. Service plans to repair your concrete curing box or address any of the above. As our technicians work throughout North America, they are all well-versed in a variety of set-ups, procedures, and industrial environments. Additionally, all of our staff and technicians are appropriately certified and credentialed and are capable of explaining technical details and offering personalized troubleshooting in a prompt, friendly, and professional manner. Concrete Curing Box | Darwin Chambers For over 25 years, Darwin Chambers has been an industry leader in the design, manufacture, and installation of concrete curing boxes, chambers, and rooms. We serve a variety of different industries and offer environmental units for a wide variety of purposes and specifications. To have peace of mind and know that your samples are secure, inquire about a Darwin Chambers concrete curing box today by calling 877-783-6774 or requesting a free quote online.