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NPCA, PCI clarify product certification requirements

Sources: National Precast Concrete Association, Carmel, Ind.; Precast/Prestressed Concrete Institute, Chicago; CP staff

The National Precast Concrete Association and the Precast/Prestressed Concrete Institute have issued a joint document to alleviate confusion in the marketplace regarding certification programs for precast and prestressed concrete products. Posted here, the document allows specifiers to easily determine whether products require NPCA or PCI certification, or if either is allowable. The clarification ensures the accurate specification of certification programs, and that all appropriately certified plants can bid on a project.

Read more: NPCA, PCI clarify product certification requirements

ICPI confirms growth in segmental concrete pavements

Sources: Interlocking Concrete Pavement Institute, Chantilly, Va.; CP staff

The Interlocking Concrete Pavement Institute has released its annual Industry Sales Profile, representing the most accurate and current sales information publicly available on the United States and Canadian segmental concrete pavement industry. The Profile tracks growth trends indicative of 100-plus producers running about 250 high-output machines in more than 200 plant locations. 

Read more: ICPI confirms growth in segmental concrete pavements

Investors set $4 billion Construction Supply Group, White Cap merger

Sources: Clayton, Dubilier & Rice, New York; HD Supply Holdings, Inc., Atlanta; CP staff

Two private equity fund managers have outlined a transaction creating a powerhouse in concrete and masonry construction accessories and supplies. Clayton, Dubilier & Rice (CD&R) will acquire HD Supply's Construction & Industrial segment, better known as White Cap and including the Home Improvement Solutions and Brafasco businesses, then pursue of merger of that entity with Construction Supply Group (CSG). Based in Denver, the latter is a portfolio company of Sterling Group, a Houston investor that has acquired concrete and masonry contractor centers since chartering the business in 2016 with Minnesota's Brock White. 

Read more: Investors set $4 billion Construction Supply Group, White Cap merger

Research contrasts resistivity test vs. w/c ratio to gauge permeability

Sources: Ready Mixed Concrete Research & Education Foundation, Alexandria, Va.; CP staff

A new RMC Research Foundation report based on work at the National Ready Mixed Concrete Association’s College Park, Md. laboratory addresses the lack of a consistent and cost-effective concrete permeability test method. "Reliability of Resistivity Tests of Concrete" authors evaluate mix design and specimen preparation factors that impact resistivity measurement; their conclusions can be incorporated in standards driving agency and engineer specifications in public and private concrete construction. 

Read more: Research contrasts resistivity test vs. w/c ratio to gauge permeability

Researchers link bricks' energy storage capacity to pigments, polymers

Sources: Washington University, St. Louis; CP staff

Looking beyond unit masonry's long-recognized thermal mass attributes, a Washington University faculty and graduate student team describes in a new study how to tap the electric energy-storing potential of iron oxide-bearing brick. 

Read more: Researchers link bricks' energy storage capacity to pigments, polymers