Concrete Products

MAY 2017

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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34 • May 2017 RAIL LOADS Salt River Materials has conducted extensive testing on ASR potential and sulfate resistance of concrete specimens prepared with the blended Class F-grade ash; agency-geared technical support activities and demonstrations to prove the materi- al's performance continue. Approval of Class C-F ash blends by Arizona and Southwest agencies would mirror action by Alabama, Flor- ida and Nebraska Departments of Transportation. The Blend-Veyor installations are part of an upgrade enabling SRMG to increase 19th Avenue Terminal capacity. Additional work includes construction of a small concrete masonry enclosure to house twin 150-hp blowers (one for each CB-150 unit) running 1,680 cubic feet/ minute at 14 psi; and, a near-dou- bling of track area for the existing 36-car rail yard, served by a BNSF line. SRMG uses pressure differential or pneumatic rail cars versus bottom dump models. Pneumatic unloading is better suited to Class F fly ash, which is more fluid-like than Class C ash or portland cement. New 19th Avenue Terminal rail area will handle either pneumatic or bottom dump cars. The facility is among 22 SRMG distribu- tion or material processing points: seven Arizona, six California, five New Mexico, plus individual Colo- rado, Nevada, Texas and Utah sites. Fly ash marketing goes hand in hand with portland cement sales from the charter business, Phoenix Cement in Clarkdale, Ariz., and aggregates from Salt River Sand & Rock in Phoenix. FEATURE BY DON MARSH Main 19 th Avenue Terminal silo. PHOTO: Gina Strole Photography BONANZA CONTRACT Salt Lake City-based Deseret Power Electric Cooper- ative, a vertically integrated, non-profit corporation owned by six rural utility members, has awarded Salt River Materials Group the fly ash marketing agreement for its Bonanza Power Plant, south of Vernal, Utah. Commencing March 2017, the long-term agreement provides SRMG with exclusive rights to the station's ASTM C-618 Class F fly ash. Bonanza Power is fueled by a Desert Power-owned coal mine, ensuring material consistency, and rep- resents the sixth ash marketing agreement for SRMG, alongside contracts covering material output from Arizona and New Mexico generating stations. It will add to SRMG's 44‐year track record of recycling fly ash from power plants, during which the producer has recycled 15 million tons of the material.

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