Sources: CP staff; ASTM International, West Conshohocken, Pa.; National Ready Mixed Concrete Association, Alexandria, Va. Responding to market demand for portland cement and fly ash alternatives or companion agents, ASTM C09.24 Subcommittee on Supplementary Cementitious Materials has published C1945-24e1, Standard Specification for Raw or Calcined Natural Pozzolan for Use in Concrete. The release of C1945 sets the stage for separating…
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ASTM C09 eyes standard for fiber reinforced concrete tensile strength
Sources: ASTM International, West Conshohocken, Pa.; CP Staff ASTM Committee C09 on Concrete and Concrete Aggregates aims to provide data enabling the engineering community to evaluate fiber performance through WK60666 New Practice for Direct Tension Testing of Fiber Reinforced Concrete, a proposed standard presently in the working phase.
Read MoreASTM standard economizes concrete specimen strength testing
Sources: ASTM International, West Conshohocken, Pa. ASTM Committee C09 on Concrete and Concrete Aggregates’ proposed WK82351, New Test Method for Measurement of a Dominant Resonant Mode of a Concrete Specimen, will provide a fast, simple, non-destructive method for measuring strength. It can be performed most anywhere and—pending further data collection, validation and calibrations—stands to benefit stakeholders across a concrete project.
Read MoreASTM C09 to host Symposium on Reactivity Tests for Cement-Based Materials
Sources: ASTM International, West Conshohocken, Pa.; CP staff ASTM Committee C09 on Concrete and Concrete Aggregates has opened registration for Symposium on Reactivity Tests for Cement-based Materials – From Lab Testing to Standards and Specifications, June 12 at the Hyatt Regency Seattle. Organizers seek content differentiating supplementary cementitious materials and inert materials for use in concrete. Despite significant progress on SCM…
Read MoreASTM C09 revises C94 batch water accuracy target
Source: National Ready Mixed Concrete Association, Alexandria, Va. A revision reflected in the forthcoming ASTM C94/94M-21a, Standard Specification for Ready-Mixed Concrete eases batch water volume verification during the batching process. It requires water to be batched to an accuracy of ±1.5 percent of the target batch water versus two existing accuracy thresholds: batch water to ±1 percent of total mixing…
Read MoreASTM symposium probes cement-based materials’ reactivity
Source: ASTM International, West Conshohocken, Pa. ASTM Committee C09 on Concrete and Concrete Aggregates invites papers for the Symposium on Reactivity Tests for Cement-Based Materials – From Lab Testing to Standards and Specifications, scheduled December 5 amid standards development meetings at the Atlanta Marriott Marquis. Organizers aim to a) provide a forum for experts to discuss standardization and the use…
Read MoreASTM C01/09 symposium to cover cement, concrete, 3D printing
Sources: ASTM International, West Conshocken, Pa.; CP staff ASTM Committees C01 on Cement and C09 on Concrete and Concrete Aggregates are sponsoring the virtual Symposium on Standards Development for Cement and Concrete for Use in Additive Construction, December 7-8. Using the WebEx platform, committee members will present potential 3D-printed mortar or concrete test methods that can be standardized through ASTM…
Read MoreASTM C09 formulates colloidal silica standard
Sources: ASTM International, West Conshohocken, Pa.; CP staff
The proposed New Specification for Colloidal Silica for Use in Concrete (WK60809) under ASTM Committee C09 on Concrete and Concrete Aggregates will cover a versatile nanoparticle imparting durability characteristics in slabs and structures.
Read MoreChryso’s Parker earns top ASTM C09 honor
Source: ASTM International, West Conshohocken, Pa.
ASTM Committee C09 on Concrete and Concrete Aggregates presented its top annual recognition, Award of Merit and accompanying Fellow title, to Chryso Inc. Sales & Marketing Manager Steven Parker. The award reflects dedicated service to the committee, particularly in administrative leadership roles and contributions to developing and improving standards for aggregates, ready mixed and finished concrete.
Read MoreNew ASTM C09 guide gauges mix performance, material compatibility
Sources: ASTM International, West Conshohocken, Pa.; CP staff
ASTM Subcommittee C09.48 on Performance of Cementitious Materials and Admixture Combinations’ working document, WK40615 Guide for Comparing Performance of Concrete Materials Using Mortar Mixtures, standardizes longstanding material-performance investigation protocol.
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