Argos’ art of the nine-figure deal

By Don Marsh

Colombia-based Argos S.A. demonstrates in its latest investment the credit facilities and drive to build multiple U.S. cement and concrete platforms, perhaps competing for acquisitions with expansion-minded peers on the order of Oldcastle Materials and Summit Materials.

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Capitol Aggregates logs first NRMCA-certified EPD for portland cement

26 EPD 150

The National Ready Mixed Concrete Association has certified its inaugural Environmental Product Declaration (EPD) for cement in North America, covering ASTM C150 Types I and III, C595 Types IP and IL, and C91 Types N and S from Capitol Aggregates’ flagship mill in San Antonio, Texas. The EPD for Capitol Aggregates, a long-time NRMCA member serving the Texas market for nearly 60 years, follows a September 2015 milestone when the association certified its 2,000th concrete declaration. That watermark is by far the most of any building material or product category represented in EPDs targeted to new green building rating system requirements.

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Cement, fly ash producers commit 100-plus truckloads to CIM Auction pool

Sources: Concrete Industry Management National Steering Committee; CP staff

Cemex USA, Holcim (US) Inc., Lafarge North America, Lehigh Hanson Inc. and Titan America have each donated 10 truckloads of portland cement to the 10th annual CIM Auction, February 4 at the Las Vegas Convention Center—in conjunction with the 2015 World of Concrete.

 
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With NESHAP for portland cement settled, EPA turns to brick kiln emissions

Sources: Environmental Protection Agency; CP staff

In its latest round of national emission standards for hazardous air pollutants (NESHAP), EPA proposes lower limits for mercury and non-mercury metals, plus hydrogen and chlorine gases from clay brick tunnel (continuous curing) kilns, coupled with target startup and shutdown periods. The agency also envisions work practice standards for more specialized periodic kilns, which are heated up to 2,000° F, then left to cool for several days. Tunnel kilns are typically fired by natural gas or sawdust; periodic kilns, coal.

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MIT researchers model stronger cement on theory behind Corning Gorilla Glass

NS-Gorilla-150

Borrowing from a “rigidity theory” that led Corning Inc. engineers to the high-performance Gorilla Glass, the Massachusetts Institute of Technology-hosted Concrete Sustainability Hub is studying potential portland cement reformulation aimed at higher fracture resistance than current ASTM C 150 product.

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49ers score big with low-carbon footprint facility

The San Francisco 49ers are kicking off the 2014-15 NFL season at a new sustainable stadium thanks in part to West Sacramento-based Clark Pacific as well as Central Concrete Supply Co., a subsidiary of U.S. Concrete. Levi’s Stadium, located in Santa Clara, Calif., is the first LEED Gold certified NFL stadium.

The San Francisco 49ers are kicking off the 2014-15 NFL season at a new sustainable stadium thanks in part to West Sacramento-based Clark Pacific as well as Central Concrete Supply Co., a subsidiary of U.S. Concrete. Levi’s Stadium, located in Santa Clara, Calif., is the first LEED Gold certified NFL stadium.

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Sizing up nano-scale materials

For the third year in a row, we visit a pavement project VCNA Prairie Material helped convert from all asphalt to partial (base slab) or 100-percent roller compacted concrete. More than a routine switch, the Maryhill Cemetery maintenance shop (pages 28-31) marks the commercial debut of RCC Surface Pro, a silica agent emanating from the field of nanotechnology, where particles are measured in billionths of a meter.

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