Tag: concrete: Page 4

Roadbuilding

Tenn. DOT: I-440 could be rebuilt 2 years faster by closing segments

TDOT is considering closing road segments rather than following traditional construction methods for the reconstruction on Interstate 440 at Nashville.

June 4, 2018

Roadbuilding

Graphene-infused concrete would be twice as strong, more water resistant than current mixes

Scientists at the University of Exeter in the U.K. are developing an environmentally friendly composite material by incorporating concrete with graphene to create a material that is more than twice as strong and four times more water resistant than existing concretes, and produces less greenhouse gas emissions, The Guardian reports. Graphene is made up of a single […]

May 10, 2018

Roadbuilding

American Concrete Institute announces new officers and directors

The American Concrete Institute (ACI) announced its 2018-2019 president, vice president, and four board members during its Concrete Convention and Exposition in Salt Lake City in March. David A. Lange was elected to serve as president for 2018-2019, Jeffrey W. Coleman was elected vice president for a two-year term, and Randall W. Poston was elected senior vice president for a two-year […]

April 25, 2018

Roadbuilding

Purdue researchers testing stronger cellulose-infused concrete on Calif. bridge

Researchers at Purdue University have found a way to make concrete stronger by infusing it with cellulose nanocrystals, byproducts generated from wood, and will test it on a bridge that will be built in California this spring, according to a news release from the Purdue Research Foundation. At press time, the exact bridge where the cellulose-infused […]

April 24, 2018

Roadbuilding

Fungus-powered, self-healing concrete could eliminate cracks in existing roads, bridges

Binghamton University researchers are working on perfecting a fungus that will heal the cracks that naturally form in concrete, pressconnects.com reports. To make the self-healing concrete, fungal spores and a nutrient-based medium would be added to the concrete during the mixing process or sprayed onto concrete structures already built. The fungus would naturally secrete minerals […]

April 19, 2018

Roadbuilding

Mont. university develops affordable ultra-high performance concrete for state DOT

Researchers at Montana State University (MSU) have developed an ultra-high performance concrete that is approximately five times stronger than regular concrete, according to a university press release. The Montana Department of Transportation (MDT) asked Michael Berry, a professor in the Department of Civil Engineering, if the university’s Norm Asbjornson College of Engineering could help develop a more affordable, non-proprietary […]

March 13, 2018

Safety

OSHA silica rules boost dust vac sales as contractors ‘tool up’ to comply

Tool manufacturers have seen a big boost in sales on products designed to meet recent federal regulations to reduce workers’ exposure to crystalline silica dust. And solutions that involve a vacuum attached to the tool to extract dust appear to be leading the charge. “Demand in the market has skyrocketed,” Eric Hollister, Hilti senior director […]

March 6, 2018

Roadbuilding

The story of America’s first concrete street and the man who built it

The Columbus Neighborhoods video below tells the story of the first concrete street in America, which was built in Bellefontaine, Ohio, by George Wells Bartholomew Jr. in 1891. Susan B. Manecke, Bartholomew’s great-granddaughter, says, “I think that he had a big vision in terms of commerce in the United States, in the whole country, and if […]

February 28, 2018

Roadbuilding

Finley Asphalt & Concrete taps Shapiro as COO

Finley Asphalt & Concrete appointed Glenn Shapiro to the position of chief operating officer. In his new position, Shapiro will ensure that the company has the proper operational controls in administrative, reporting procedures, and people systems. “By modifying our leadership structure, we are (now) able to better diversify, manage our productivity, cover more ground and […]

February 14, 2018

Roadbuilding

I-440 reconstruction plan for Nashville progresses, TDOT says

The Tennessee Department of Transportation has released the request for proposals for widening and revamping Interstate 440 in Nashville, with construction scheduled to begin this summer. TDOT says the project will involve replacing deteriorated concrete with asphalt, widening the road in each direction from two lanes to three including the bridges over I-65, and replacing […]

February 2, 2018

Business

American Concrete Institute presents awards during World of Concrete

The American Concrete Institute (ACI) presented its ACI Construction Award and ACI Certification Awards during the World of Concrete in Las Vegas on January 24. The following people were recognized: Brian P. Cresenzi, Materials Engineer, HNTB Corp., received the ACI Construction Award for the discussion of concrete production and concrete quality organization, as well as […]

February 1, 2018

Roadbuilding

ACI releases 2018 ACI Collection of Concrete Codes, Specifications, and Practices

The American Concrete Institute (ACI) announced the release of its 2018 ACI Collection of Concrete Codes, Specifications, and Practices, which was formerly known as the Manual of Concrete Practice. It contains information on concrete design, construction, and materials, with nearly 50 codes and specifications and more than 200 practices, including guides and reports. Categories covered in the […]

January 19, 2018