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ASTM C09 subcommittee writes colloidal silica standard

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

The proposed WK53768, New Specification for Colloidal Silica standard will inform concrete practitioners on a supplementary cementitious material—emerging from the field of nanotechnology—that imparts strength and durability characteristics in finished slabs and structures.

Read more: ASTM C09 subcommittee writes colloidal silica standard

Concrete, cement producers and allies reinforce SCC, Sustainability program

Source: CP staff

The co-located 6th North American Conference on Self-Consolidating Concrete (SCC2016) and 11th International Concrete Sustainability Conferences will draw some of the world’s leading authorities on high performance materials and sustainable practices. Key suppliers and service providers to North American concrete producers will contribute to a deep program, speakers and presentations including:

Read more: Concrete, cement producers and allies reinforce SCC, Sustainability program

Top appellate court to hear consolidated petitions for review of OSHA silica rule

Sources: Portland Cement Association, Skokie, Ill.; CP staff

The U.S. Court of Appeals for the District of Columbia Circuit will hear all challenges to the Occupational Safety and Health Administration’s tightening of the permissible exposure limit (PEL) for respirable crystalline silica. Among them are petitions for review construction and allied materials interests filed in U.S. Court of Appeals for the Fifth and 11th Circuits. A deadline for such petitions is May 24.

Read more: Top appellate court to hear consolidated petitions for review of OSHA silica rule