Concrete Products

AUG 2014

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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30 • August 2014 FEATURE BY DON MARSH SILICA RULES Power-troweled, roller compacted concrete with surface characteristics and performance potential approaching conventional flatwork has turned on Maryhill and a handful of other RCC Surface Pro troweling aid demonstrations. Springfeld, Ill.-based Solomon Colors Inc. is launching the new agent in the U.S. and Canada as part of distribution partnership with Lythic Solutions. The 10-year-old Van- couver, Wash., company has parlayed surface fnishing products in applications beyond its core concrete foor polishing market, formu- lating RCC Surface Pro from nearly pure (> 99.5 percent) silicon dioxide or silica. Measuring as little as 1/1,000 the size of typical concrete binder particles, the silica particles are suspended in ultra-low surface tension liquid. RCC Surface Pro is spray ap- plied in tandem with troweling, which gen- erates a paste ready for foating or brooming. The agent's chemistry and particle sizing are well suited to fostering additional calcium sil- icate hydrates, the principal binders in port- land cement concrete. Solomon piloted RCC Surface Pro earlier this year in Texas and Arizona, Cemex USA supplying the RCC mixes on each. The Prai- rie/J&R project marked the agent's commer- cial debut. Spearheading the offcial RCC Surface Pro rollout this fall are Solomon's Director of Business Development–Decora- tive Business Unit John Anderson, 217/527- 1146 or, and Area Manager Keith Nault, 262-227-9194 or As demonstrated during the Maryhill Cemetery maintenance shop placement, RCC Surface Pro is generously applied to a top RCC layer or lift shortly after a f- nal drum roller pass. Upon troweling, the agent imparts an optimally thin paste, ready for smooth foat or broom brush. RCC properties necessitate the use of trowel pans versus blades. The four-day Maryhill project demon- strates for owner Catholic Cemeteries— plus a growing pool of public and private accounts to whom Prairie Material is pre- senting the RCC pavement option—how engineers and contractors can sidestep an asphalt wear course thanks to the perfor- mance and surface characteristics of slabs fnished with RCC Surface Pro.

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