To limit downtime and inconvenience to Middletown residents, the Connecticut Department of Transportation aimed for a quick method to replace the short span Route 17 bridge over Long Hill Brook. Anchor Engineering Services, a civil and environmental consulting firm located in Glastonbury, Conn., decided that precast concrete would be the quickest solution. Its task was to design a replacement structure bearing on a foundation set in the stream bed’s variable rock base.
A breakthrough process for ready mixed gives John Cook, director of Technical Services at Atlanta’s Thomas Concrete, cause for enthusiasm this construction season. In late February, he and his team oversaw the installation of the CarbonCure Ready Mixed Technology at their Doraville, Ga. plant. They immediately began the process of lowering cementitious material content and dosing concrete mixes with carbon dioxide (CO2) gas using the CarbonCure injection system. Later in March, Cook and colleagues eagerly reviewed the 28-day strength data and confirmed: CO2 may be used as a viable cement replacement.Read More
Original equipment manufacturers anticipate 2016 heavy-duty truck shipments down against near-record 2015 delivery levels, especially due to a drop in demand among mainline freight customers. In the vocational segment, including mixer- and dump-grade models, OEM and body builders report more stable market conditions this year.