New ASTM standard supports recycling of fresh, returned concrete

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

ASTM Committee C09 on Concrete and Concrete Aggregates’ C1798, Specification for Returned Fresh Concrete for Use in a New Batch of Ready-Mixed Concrete, affords producers process, verification, and record-keeping procedures to lower stockpile volume or reclaimer throughput.

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ASTM C09 names Vulcan Materials’ Graves as Mather Award recipient

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

Vulcan Materials Corporate Manager of Technical Services Robin Graves has received the Katharine and Bryant Mather Award for advancing concrete technology through leadership roles in ASTM C09 Committee on Concrete and Concrete Aggregates. The award is named for longtime C09 member Bryant Mather, whose extended Vicksburg District tenure positioned him among the top cement and concrete authorities in the Army Corps of Engineers’ history.

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ASTM C09 approves roller compacted concrete pavement standard

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

ASTM C09 Committee on Concrete and Concrete Aggregates’ new standard—C1800, Test Method for Determining Density of Roller Compacted Concrete Specimens Using the Gyratory Compactor—references a specialized tool to prepare samples and test the density of a material with proven performance characteristics in medium- and heavy duty pavements.

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Proposed ASTM C09 standard tackles mix material incompatibility

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

A working document under ASTM Committee C09 on Concrete and Concrete Aggregates—ASTM WK40615, Practice for Mixing and Comparing Performance of Concrete Materials Using Mini-Mix Mortar Mixtures—enables technologists to detect and address incompatibility issues arising in mix design development.

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