Sources: National Ready Mixed Concrete Association, Silver Spring, Md.; CP staff
In collaboration with Dr. Neal Berke of Kalamazoo, Mich.-based Tourney Consulting Group, NRMCA has completed research to a) establish a relationship between the calculated total (initial) chloride content and measured water-soluble chloride content in hardened concrete; and, b) potentially give ready mixed producers latitude in mixture adjustments on projects bound by ACI 318 Building Code Requirements for Structural Concrete.
St. Louis-based Ascent LLC, a builder and operator of highly secure data centers is promoting its latest facility on the strength of mass, reinforced concrete: 15-in. walls and a 13.5-in. roof enclosing 42,600 sq. ft. of space. Dubbed DAL1 for its Dallas-Ft. Worth metroplex proximity, the new Plano, Texas, facility is built to withstand exposure to 360-mph winds, well above the National Weather Service’s 200-mph threshold for (Enhanced Fujita Scale) EF5 tornadoes.
Hanson Pipe & Precast is producing Premier Railroad Crossing, a precast, reinforced concrete system that allows for smooth roadway crossings over railroad tracks, its installation and life cycle faster and longer than alternative styles.