Several years ago, analysts estimated that about 0.5% of all flatwork concrete was integrally colored, suggesting that one out of every 200 trucks loaded each day could head to a decorative project.
Some suggest shipments to decorative concrete projects since then have quadrupled to perhaps a whopping 2%. Sales of integrally colored concrete are growing while plain gray concrete sales are flat.
Constraining integrally colored's growth has been producers' concern for profit margins. Many managers have avoided promoting colored concrete, citing cost concerns rising from more attention to slump control, slower batching times, increased ingredient inventory, and difficult customer billing. These lead to the fear that there's another gamble with every color job—winning job acceptance and, thus, payment from the owner.
Fortunately in the last five years, these constraints have lessened. Managers have instituted better batching procedures that minimize mix variation and lower QC labor costs. Pigment suppliers have enhanced their dosage equipment, enabling an automated dispensing. Bulk delivery systems have eased pigment inventory concerns. And there appears to be help in solving any back-office problems.
Integrating batching with mixing
Even now, producers wanting to batch integrally colored concrete have had to self-devise a system that integrates pigment batching with mixing. At many operations, batch rooms had two operating systems that only shared the electrical power. While there has been an effort to coordinate dispensing procedures of pigments and admixtures, the final constraint has been the paperwork.
Engineers from Command Alkon, of Birmingham, Ala., invited engineers from several partners to help remove this roadblock. Their focus on streamlining the color batching process has been on coordinating the order entry and batching procedures.
Last year, they approached several pigment dispensing equipment manufacturers to establish a TCP/IP address protocol that enables clear data transfer between the batch control system and the pigment mixing equipment. “This is an important effort for us to help streamline the batching process,” says Lenny Morris, Command Alkon's manager of special projects.
The result, says David Wiggins, a product support engineer from Command Alkon, has been a new feature that can quickly improve a plant's efficiency.
“Our customers want to eliminate extra steps in their colored concrete order fulfillment effort,” Wiggins says. “The new batching software interface minimizes the costly mistakes that can occur when producing, scheduling delivery, and billing integrally colored concrete.”
Command Alkon software designers have created a protocol that allows for the order information for both colored and gray concrete to enter the system together. The data then is bundled throughout the billing process.