ollowing Research, Engineering and Standards Committee review, the National Ready Mixed Concrete Association has released version 2 of the Quality Certification program, noting criteria and submission requirements simplified from the charter version.
The certification program is a broad-based audit of a ready mixed concrete producer’s quality plan. It reviews portions of a producer’s Quality Management System, developed and supported by management, and confirms or measures a) a company has competent professionals responsible for quality; b) production facilities and delivery vehicles conforming to industry standards; c) processes for specification review, mixture development and submittal, plus testing and evaluating ingredient materials and concrete mixtures; and, d) the quality system supports continuous improvement.
A company attaining certification can establish itself as a leader and preferred provider in its local market, NRMCA contends. Improved quality can lead to stronger reputation plus increased profitability and sales. The association believes that widespread Quality Certification use will improve confidence in concrete construction; support evolution to performance-based specifications; and, result in saving of time and cost for industry stakeholders.
FRESH, RETURNED CONCRETE RECYCLING STANDARD FOSTERS GREEN STEWARDSHIP
ASTM International 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.
“This standard recognizes unused concrete in a fresh state as a potential ingredient for a new batch,” says Texas Aggregates and Concrete Association President and ASTM C09 member Rich Szecsy. “Recycled fresh concrete can be treated as a raw-material component just like water, aggregates, and cement.”
Prior to C1798, he adds, ready mixed producers had some options for repurposing or recycling fresh concrete, but returned or leftover material was often disposed of in a landfill. “Because of this new standard, the industry can participate in a more sustainable construction practice in which millions of cubic yards of concrete can now be recycled in a way that is safe for end users and provides a more conscious approach to environmental stewardship,” Szecsy affirms.— www.astm.org