Displaying items by tag: US

US: CR Minerals has signed a contract with mining company Rio Tinto for the supply of mineral waste from the latter's subsidiary US Borax's boron mining operations in California. CR Minerals will use the waste to produce pozzolans to replace cement in local concrete production.

CR Minerals president Jeffrey Whidden said "We have been working with Rio Tinto for several years now to bring this concept to life. Taking what was once considered waste streams and turning them into usable products for the construction materials industry is part of the vision of our company."

US: The Global Cement and Concrete Association (GCCA) has signed an international partnership agreement with the American Concrete Institute (ACI). Under the agreement, the partners will collaboratively develop and disseminate information on concrete production and its use in construction, with a view to advancing best practices in sustainability.

The ACI said "ACI cooperates closely with our international partners, benefitting everyone in the global concrete community. ACI looks forward to working with the GCCA towards a future where everyone has the knowledge needed to use the latest concrete technologies effectively to meet the demands of a changing world."

US: Lehigh Hanson has acquired Washington-based concrete and asphalt recycling company JEV Recycling. The Heidelberg Materials subsidiary says that the acquisition strengthens its regional recycled materials portfolio, enabling it to increase its sustainable offering.

President and chief executive officer Chris Ward said “The acquisition of JEV Recycling represents an important step for Lehigh Hanson as we grow our business beyond cement and aggregates while working to lower our environmental footprint. It also highlights the importance of finding innovative ways to serve the growing needs of our customers for responsibly sourced and circular products so they can meet the sustainability targets of their projects.”

US: COBOD says that construction of the largest 3D printed building in the US using its 3D printing technology has commenced at a site in Houston, Texas. The building is the country’s first two-storey residential building constructed using the method. PERI handled the order for contractor CIVE and architect HANNAH.

CIVE president Hachem Domloj said “Having the opportunity to be the engineers and general contractor for the first two-storey 3D printed structure in the US has been an honour. We can see how this technology and our team’s approach is providing the scalability to larger commercial developments. Collectively, we're changing the way our country builds, and paving the way for more affordable housing, higher structural integrity and faster building capabilities. The possibilities of 3D printing are endless!”

US: Argos USA has invested US$40m in 200 new ready-mix concrete mixer trucks, as the first phase of a five-year fleet expansion and replacement plan. The company says that the vehicles have a useful life of 8 – 10 years, or 53,500m³. It expects to make its next truck purchases in early 2023.

Argos USA ready-mix president Richard Edwards said "With the acquisition of these new assets, we continue our dedication to delivering extraordinary solutions to customers, helping facilitate the progress and development of the cities and communities where we have a presence. Our new trucks have a capacity of around 7.5m³ of concrete, are approximately 15% more fuel efficient than our previous trucks, and result in lower atmospheric emissions. They are also vehicles with the latest safety equipment, to continue ensuring the safety of our employees and everyone we share the road with daily."

US: Switzerland-based Sika is starting up production at a new concrete admixtures plant at Stafford in Virginia that opened earlier in 2022. The 3950m² facility has a production capacity of 50,000t/yr and two mixers with a capacity greater than 27,000l each. The unit is intended to serve markets in the Northeast and Mid-Atlantic regions along with the company’s existing concrete admixtures plant at Fairless Hills in Philadelphia.

Christoph Ganz, Regional Manager Americas said "This investment allows us to significantly expand our production capacity while creating the best possible conditions for continued growth in the North American market. Our concrete admixtures satisfy the construction sector’s most demanding requirements and make it possible to produce higher-performance, resource-saving concrete. Sika admixtures enable the realisation of critical infrastructure projects, are used in state-of-the-art high-rise construction, and help increase sustainability in megacities."

UK: Concrene Limited has obtained a US patent for its Graphene Reinforced Concrete technology. The technology uses graphene dispersed in water to create a uniform distribution of graphene particles in concrete. Graphene increases the strength of concrete, enabling less cement to be used in its production.

Concrene Limited invited interested US stakeholders to discuss opportunities for commercial partnerships.

US: Holcim has acquired Louisiana-based Cajun Ready Mix Concrete. Cajun Ready Mix Concrete operates eight ready-mix concrete plants in Baton Rouge, with a total of 108 employees and 51 mixer trucks.

Holcim region head North America Toufic Tabbara said “This acquisition expands our footprint in the dynamic Baton Rouge market, confirming our focus on growth in North America. Cajun’s commitment to innovation, service and quality, along with its industry relationships and engineering capabilities, are an ideal addition to our business. We’re excited to work with the Cajun team to build further partnerships across this highly attractive growth region. I warmly welcome all Cajun employees into the Holcim family and look forward to unleashing our next era of growth together.”

US: The Slag Cement Association (SCA) has announced the recipients of its 2021 Slag Cement in Sustainable Concrete Awards program. Thirteen construction projects were chosen to showcase the broad applications of slag cement and its impact on creating more durable and sustainable concrete. The infrastructure winners included projects with slag cement supplied by companies including Argos USA, Cemex, Lehigh Hanson, Ozinga, Skyway and St Mary’s Cement. These projects included work on roads, bridges, residential construction, a concert venue, a sport stadium, airports, a theme park and a hydroelectric dam. Two research projects on slag cement from Cleveland State University and Florida State University were also recognised.

US: Lehigh Hanson has completed its acquisition of Atlanta-based ready-mix concrete company Meriwether Ready Mix.

Parent company HeidelbergCement’s chair Dominik von Achten said “The acquisition of the Meriwether Ready Mix assets will enhance our integrated footprint in the rapidly growing Metro Atlanta area. These operations better position us to capture this growth potential and serve a broader customer base with a wide range of sustainable, low carbon concrete products and digital solutions. We welcome the Meriwether employees to the HeidelbergCement team.”