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NCMA/ICPI Safety Award entry deadline nears

Source: National Concrete Masonry Association, Herndon, Va.

The 2015 National Concrete Masonry Association/Interlocking Concrete Pavement Institute Safety Awards Program call for entries runs through April 15. It is open to producer and associate member facilities with production or manufacturing personnel as reported on Occupational Safety and Health Administration 300A logs or Canadian agency equivalents.

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FHWA probes SCM, natural pozzolans within best pavement practices

Sources: Federal Highway Administration; CP staff

A new FHWA Tech Brief cites benefits and drawbacks of fly ash, slag cement, silica fume and natural or alternative pozzolans for highway-grade concrete. "Supplementary Cementitious Materials — Best Practices for Concrete Pavements" (FHWA-HIF-16-001) outlines how transportation agencies approach increasing service demands on concrete structures, along with expectations for reduced environmental impact plus lower initial and lifecycle costs.

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New ASTM standard gauges prestressing strand bond integrity

Sources: ASTM International, West Conshohocken, Pa.; CP staff

ASTM A1096, Test Method for Evaluating the Bond Quality of Steel Wire for Concrete stems from assessment of precast concrete members where indented prestressing wires exhibit potential bond-related cracking. Soon to be published by ASTM Committee A01 on Steel, Stainless Steel and Related Alloys, the standard is based on A1081, Test Method for Evaluating Bond of Seven-Wire Steel Prestressing Strand.

Read more: New ASTM standard gauges prestressing strand bond integrity