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Extruder paces major Spancrete machinery series expansion

Engineers at Wisconsin-based Spancrete, a leader in engineered precast hollow core machinery solutions, have embraced product variety, plant productivity and automation in one of the most ambitious equipment portfolio upgrades in the manufacturer’s history. An expanded lineup announced last month includes new extruder, plotter, multi-function machine, multiple saws and other ancillary plant components.

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Admixture extracts CSH binding value, tempers heat-prone free lime

Ohio-based adhesive, sealant, gel and coating specialist Silicone Solutions plans a 2018 World of Concrete launch for a nano-silica admixture that effectively converts Types I and II portland cement to a Type IV low heat binder. CoolCure skews hydration chemistry to calcium silicate hydrate or CSH, the principal binding agent in concrete, to the detriment of calcium hydroxide or Ca(OH)2, the heat of hydration source. The product is dosed in two parts per cubic yard: a silica-rich liquid at up to 1 gallon plus a dry catalyst at up to 1 lb. per 100 lbs. of cement.

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VOLUMETRIC MIXERS

Volumetric mixer truck operators have convincingly staked claim to residential, small order and department of transportation market segments. As Concrete Products shows here, truck manufacturers are helping fleets’ cause by tapping technology to increase production efficiency and quality control.

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Nano-scale agent frees GCP’s shotcrete system of silica fume

Silica particles graded at nano-scale, where the unit of measure is 1 billionth meter, might be the smallest objects on admixture scientists’ radar, but are on the cusp of becoming one of the most important concrete developments since the mid-1990s advent of polycarboxylate superplasticizers.

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STEEL, SYNTHETIC FIBER REPORT

Concrete Products examines polypropylene, nylon, acrylic and other synthetic products for secondary concrete reinforcement, plus steel fibers, which continue to show potential for replacing conventional rebar or mesh. Most of the products and technologies here will be exhibited at 2018 World of Concrete.

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