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Day: March 8, 2016

FHWA probes SCM, natural pozzolans within best pavement practices

Concrete News

Sources: Federal Highway Administration; CP staff

A new FHWA Tech Brief cites benefits and drawbacks of fly ash, slag cement, silica fume and natural or alternative pozzolans for highway-grade concrete. “Supplementary Cementitious Materials — Best Practices for Concrete Pavements” (FHWA-HIF-16-001) outlines how transportation agencies approach increasing service demands on concrete structures, along with expectations for reduced environmental impact plus lower initial and lifecycle costs.

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New ASTM standard gauges prestressing strand bond integrity

Concrete News

Sources: ASTM International, West Conshohocken, Pa.; CP staff

ASTM A1096, Test Method for Evaluating the Bond Quality of Steel Wire for Concrete stems from assessment of precast concrete members where indented prestressing wires exhibit potential bond-related cracking. Soon to be published by ASTM Committee A01 on Steel, Stainless Steel and Related Alloys, the standard is based on A1081, Test Method for Evaluating Bond of Seven-Wire Steel Prestressing Strand.

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Iron Workers official indicted in kickback scheme defrauding rebar crew

Concrete News

Sources: U.S. Department of Justice; CP staff

The Department of Justice Criminal Division has charged International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers Union Local 201 Business Manager Juan Carlos Recinos with taking kickbacks from rebar crew members who had received backpay awards for work at the District of Columbia Water & Sewer Authority’s Blue Plains Wastewater Treatment Plant.

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University of South Florida polytechnic building scores top DCC award

Concrete News
72 USFPoly 150

The Decorative Concrete Council has announced the winners of its eighth annual Decorative Concrete Awards competition. Awards were presented to 27 projects in cast-in-place stamped, stained or special finish, polished, overlay, vertical application, architectural concrete and artistry categories. A specialty council of the American Society of Concrete Contractors, DCC announced the winners last month at World of Concrete 2016 in Las Vegas.

 
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Load securement line

Concrete News
69 Doleco 150

A subsidiary of German manufacturer Dolezych GmbH, Doleco USA has released its 2016 Load Securement and Lifting Products Catalog. In 52 pages, it features 100-plus new products and more than 300 total units. Since its charter product catalog in 2014, Doleco USA has continued to expand its product line for customers seeking an alternative to distributed brands. Among new offerings are patented side loading ratchet strap assemblies; patented winch bars; transport chain packaging; expanded retail strap offering; hardware section; and, a section dedicated to high capacity, premium Dyneema tiedowns and slings.

 
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Enerpac Configures Cylinders for Accurate Hoisting, Load Positioning

Concrete News
67 Enerpac 150

A below-the-hook lifting solution, the SHS-Series SyncHoist enables operators to use a single crane to easily position loads vertically and horizontally, all while ensuring safety, speed and control. Designed with four BTH-1 compliant hydraulic lifting cylinders, the system is connected directly to suspended rigging. Cylinders are available in 60-, 94- or 120-ton capacity with strokes ranging from 19.69 to 59.06 in.

 
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Hoists suit tight quarters

Concrete News
66 Kone 300

Available in 1- to 80-ton capacities, the CXT line has been engineered with a short hook approach, low-headroom design, and can work close to walls whereby owners of crane-equipped operations can optimize building footprints. A hoisting inverter provides accuracy and controlled slow speed operation when lifting, while the empty load hook can be driven with up to 50 percent higher speeds compared to the loaded hook—allowing the operator to choose the most efficient hoist movement.

 
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EMH tailors new gantry series to expedited design and ordering

Concrete News
66 EMH 150

A recently introduced, full line of Standard Gantry Crane solutions allows customers to design, price and order a wide range of models by themselves. The cranes are available in single- or double-leg configurations; 3-, 5-, 7.5-, or 10-ton capacities; and, 20- to 56-ft. spans. All incorporate appropriately sized hoists and end trucks. Customers decide between configurations and capacities, while the Standard Gantry Chart does the rest.

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