Sources: ASTM International, West Conshohocken, Pa.; CP staff
The new ASTM C1856/C1856M–17 Standard Practice for Fabricating and Testing Specimens of Ultra-High Performance Concrete covers requisite procedures for a material increasingly specified in bridge deck closures, thin-section architectural precast concrete elements, and high-end, decorative furnishings or components.
Sources: Lafarge North America, Chicago; CP staff
LafargeHolcim has teamed with South Bend, Ind.-based Shaffner Heaney Associates to extend Ductal ultra-high performance concrete—with 18,000 psi design and 25,000 psi ultimate strengths—to the thin cladding and rainscreen market. Long the domain of metal panels and, more recently, fiber cement, rainscreen cladding systems typically comprise galvanized bracket- or channel-mounted 0.5- to 1-in. thick panels, insulation and water barrier.