Concrete Contractors charter Sustainability Committee

Sources: American Society of Concrete Contractors, St. Louis; CP staff Former American Society of Concrete Contractors Executive Director Bev Garnant, HACI, and Technical Director Bruce Suprenant, FACI, P.E., have been retained to develop and manage the group’s recently formed Sustainability Committee.   “This initiative has two purposes,” says Garnant. “The first Read more…

UN office facilitates global cement, concrete, steel PCR harmonization

Sources: National Ready Mixed Concrete Association, Alexandria, Va.; United Nations Industrial Development Organization, Vienna; CMCM staff Officials of global or national cement, concrete and steel groups recently convened in Vienna for a United Nations Industrial Development Organization (UNIDO) workshop aimed at developing a harmonized guideline for Product Category Rules. PCR Read more…

Ready Mixed Concrete

Ready mixed concrete is defined in the ASTM C 94 standard and specified for cast-in-place, reinforced and/or post-tensioned structural conditions. It combines hydraulic binder, primarily portland cement but also supplementary materials such as Class F or Class C fly ash, slag or pozzolan; chemical or mineral admixtures; sand, gravel or Read more…