The use of lightweight aggregate for internal curing in a new class of high-performance concrete called Eco-HPC results in a more durable product that can resist cracking, according to a Missouri Department of Transportation study. The study examined one type of Eco-HPC for pavement and another for bridge construction.
Overnight closure of the Detroit-Windsor tunnel will begin today for a $17.6 million project to repair the ceiling. The project, which is being funded by toll revenue, will close the tunnel each night for 10 days, followed by intermittent closures until June.
A $1.2 billion loan for private companies involved in building private toll lanes on Interstate 66 in Virginia has been approved by the federal government. The final design will be the focal point of public hearings next month, and construction could begin by year's end.
A $170 million expansion and renovation of the Pala Casino Spa Resort in California will create 400 construction jobs and add 200 employees. The project, which will include a remodeling of the existing tower and the addition of a 348-room hotel tower, is expected to be completed in 2019.
Kiewit says much more excavation work and concrete will be needed than originally estimated to rebuild the spillway at the Oroville Dam in California, and the state has altered plans and now requires twice as much concrete, all of which is driving up the project's cost from $275 million to over $500 million, excluding initial emergency response work. The collapse of the spillway nearly caused the dam to fail, and the state hopes the federal government will pick up the bulk of bill for the repairs.
The Colorado Transportation Commission has unanimously approved the allocation of $250 million to widen Interstate 25 and add toll lanes in each direction -- if the federal government comes up with the $100 million more the project will cost.
More concrete producers and contractors are delving into building information modeling, Craig Yeack writes. He points to five important things to know about using BIM, including that it will improve the project and increase profits.
An amendment to prevent oil drilling in the Arctic National Wildlife Refuge failed on the US Senate floor. The bill is designed to raise revenue from lease sales, though many Democrats objected for environmental reasons.
Discover what personal and creative strengths are unique to you, and use those to find your role in the workplace, writes Scott Mautz. He notes the story of filmmaker Nora Ephron, who used her writing and directing platform to send powerful messages and mentor other women.
The Senate has voted 51-49 to approve a budget blueprint for fiscal 2018 that opens the door to adoption of tax cuts proposed by President Donald Trump without Democratic votes. The measure needs reconciliation with a version passed by the House before it can be submitted for Trump's signature.
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A source article for a summary in the Oct. 9 Concrete SmartBrief mischaracterized the effect of using fly ash in concrete roads in Lincoln, Neb., in the 1980s and 1990s. Read a corrected version of the article for information about what caused the concrete deterioration. SmartBrief regrets the error.
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