Doka form tie load, plywood pressure sensors safely expedite pours

Sources: Doka USA, Kenilworth, N.J.; CP staff With an eye to providing safety data foremen need to justify higher concrete placement rates, formwork giant Doka Group has launched Xact Load, whose twin sensors monitor form tie loads and plywood pressure levels. Configured to relay real-time figures to the DokaXact portal, “the sensors ensure that concrete is poured as fast as…

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Precast panels blanket .53-mile Gordie Howe Bridge main span

Sources: CP staff; Fluor Corp., Irving, Texas; Windsor Detroit Bridge Authority Crews on the cable-stayed Gordie Howe International Bridge, a 1.5-mile Detroit River crossing linking the Motor City and Windsor, Ontario, recently completed the mid-span closure segment, capping nearly two years of placing precast concrete deck panels across or along structural steel edge and redundancy girders, floor beams and soffit…

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Delivering Long-term Resilience with Internally Cured Concrete

So much depends on concrete’s durability yet early-age cracking is a common and damaging issue structures face. These cracks expose internal steel reinforcement to chemicals and elements, accelerating corrosion and jeopardizing a concrete component’s structural integrity and service life. Factors like surface drying and environmental stressors like temperature can increase the risk of early-age cracking. Carefully considering the mix design…

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Aggregate Harvest

New processing methods economically recover C33-grade material from construction, demolition and excavation waste streams One of the newest instances of circular economy principles impacting concrete materials is recovery of sand & gravel from inert or contaminated soils tied to construction, demolition and excavation. Investors in next generation wash and classification plants aim to tackle new transportation and environmental economics forcing…

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