CEI demos 4-bin Fusion™ concrete plant, releases break test data
Albuquerque, NM (July 11, 2017) – CEI is currently demonstrating the newest model in its line of Fusion™ Hybrid-Process Ready Mix Plants.
The new plant features four aggregate bins, as well as subtle design changes to enhance performance. In operation since April, the demo plant showcases the benefits of CEI's precision aggregate blending.
Precision aggregate blending yields fewer voids
CEI has leveraged precision aggregate blending technology from the asphalt industry, and combined it with established methods for metering cement and water. The result is a hybrid process that yields better aggregate blending with fewer voids. The reduction in voids allows the production of high-quality concrete, using proportionately less cement than older methods.
Surpasses testing specs with 17% less cement
Independent field testing has shown that concrete mixed with a CEI Fusion plant exceeded break test standards with a significant reduction in cement usage.
3-1/4 inch slump concrete was mixed with 470 pounds of cement per cubic yard, rather than the standard 564 lbs. This represents a 16.7% reduction in cement usage.
Standard break test specifications require a strength of 4,000 psi at 28 days.
The 7-day break test will represent 65% of the concrete's compressive strength. Therefore, concrete made with the standard 564 lbs of cement per cubic yard should fracture at 2,600 psi in order to pass the 7-day test.
The concrete mixed with the Fusion plant and only 470 lbs of cement per cubic yard fractured at 4,350 psi, exceeding the test standard by 1,750 psi for the 7-day test.
The 14-day break test of the same concrete mix showed a compressive strength of 4,580 psi.
The 28-day break test showed a compressive strength of 5,460 psi, exceeding the test standard by 1,460 psi.
This was concrete mixed with 94 pounds less cement per cubic yard, saving nearly 17% in cement consumption.
About CEI's Hybrid Process blending
The core of the Fusion plant is the aggregate blending unit. A series of in-line bins holds multiple sizes of aggregates, as well as sand. Each bin releases to its own feed conveyor that is fitted with its own belt scale. This provides precision metering of each aggregate. The feed conveyors for each bin discharge onto a collecting conveyor below. Aggregates are blended in layers. The blend is then fed directly into the mixer.
This proven technique for blending aggregates has been a standard feature of asphalt plants for over 30 years. CEI has extensive experience in this type of aggregate blending, having produced asphalt plant equipment since 1969. As an Astec Industries company, CEI is also able to leverage the most established and accurate aggregate blending technology available.
For additional information, please contact the CEI Sales Department at 800.545.4034.
Media Resources — Press Images: