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How to measure free or surface aggregate moisture

The moisture meter you own or buy will define how you measure your aggregate moisture levels. While most sensors measure bulk moisture, some measure only surface moisture. In either case, though, they can be calibrated to read surface or free moisture. This is the moisture that reacts with the cement in the mix and, therefore, the only moisture you need to worry about.

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Elematic injects speed, recycling capability into flagship extruder

Elematic Oyj rode into the bauma 2019 trade fair, Munich, with a fifth generation plank and slab extruder sporting new compaction control, bouncing prevention and mix recycling mechanisms. The Extruder E9 sets what company engineers dub a new benchmark for high-speed casting at low operating costs. Equipped with an advanced touch screen user interface and added intelligence features, the machine is geared to offer a new level of user experience and the potential for significant material savings measured against predecessor models.

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Tiger sheds cables with battery-operated rack crawler

Pathfinder Systems has unveiled a rack crawler for its Tiger International Inc. machine series. With a compact design and wireless charging technology, the battery-operated, low profile equipment eliminates the potential for time consuming tasks associated with festoon power cables, especially tangles or snags.

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Mutual Materials inaugurates Besser’s big board Servopac Premier

Besser Co. has completed a decade-plus development of its next generation Servopac block & paver machines, delivering the newest and largest model to Bellevue, Wash.-based Mutual Materials Co., a top independent in concrete or clay masonry and hardscapes production.

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API-certified DEF a key element in smooth truck operation

Diesel Exhaust Fluid (DEF) for heavy-duty truck emissions treatment systems is made from a mixture of technically pure urea and purified water, and must be handled and stored properly to preserve its quality. This holds for drivers filling up on the road and shops that stock DEF.

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