Displaying items by tag: blended cement
China: A new study from Hong Kong Polytechnic University showcases sustainable cement production methods, focusing on low-clinker cements and alternative solutions for incinerator fly ash (IFA). The research demonstrates that using carbonated-washed IFA mixed with slag, coal fly ash, or metakaolin can replace 60% of Portland cement, forming ternary blended cement. This approach reportedly reduces the carbon footprint of cement production.
The study found that slag was the most effective,improving pore structure and increasing ettringite and hemicarboaluminate formation with a blend of 40% slag and 20% IFA. It achieved 90% of the compressive strength of pure Portland cement after 90 days.
The researchers said "This study demonstrated the promising potential of the blended cements to simultaneously divert IFA from landfills and reduce the clinker content of cement."
UK: Holcim subsidiary Aggregate Industries has commenced its construction of a cement blending plant and import hub on the River Thames at the Port of Tilbury in Essex. The facility also includes units for the production of reduced-CO2 cement components, including ground granulated blast furnace slag (GGBFS) and construction demolition waste (CDW)-based materials. The Tilbury site has five loading heads and will help Aggregate Industries to maintain its continuous supply of conventional, reduced-CO2 and circular cementitious materials to London and South East England.
CEO Dragan Maksimovic said “This important investment will further strengthen our position in the market, allowing us to drive our sustainability ambitions and lead the way in low carbon and circular building materials. The London and South East construction market has major regional projects on the horizon, and we are primed and ready to meet the region’s rising demand for sustainable solutions.”
Steve Curley, managing director cement, added “Our ECOPlanet range of green cement was recently added to our green offering. By investing in this impressive facility within the Port of Tilbury, we will truly boost our sustainable offering and be more agile and efficient in the way we manufacture, transport and supply our products across this region.”
Sri Lanka: Insee Cement's Ruhunu cement plant in Galle has begun producing Portland composite cement (PCC) using slag and fly ash. Insee Cement first produced PPC at its Puttalam cement plant.
Insee Cement's head of products and solutions Moussa Baalbaki said "Insee Cement introduced PCC for the first time to the local market in 2021 as part of a two-pronged approach: to create value for our customers by augmenting the sustainability performance in their constructions, and also to steer Sri Lanka's construction industry towards ambitious, globally benchmarked sustainable goals." Baalbaki continued "We are truly encouraged by the growing demand across the local market for PCC, and trust our production expansion to Galle is testimony to our commitment towards sustainable production practices."
Bangladesh: Shah Cement has inaugurated the world’s largest vertical roller mill (VRM), supplied by Denmark’s FLSmidth, at its Muktarpur plant in Munshiganj. The mill is designed to produce Ordinary Portland Cement (OPC), Pozzolana Portland Cement (PPC), Portland Slag Cement (PSC) and slag cement types. It is producing PPC at a capacity of 500t/hr at 3500 Blaine with 15% slag.
The FLSmidth OK 81-6 Mill has an 8.1m grinding table and six grinding rollers powered by two 5.8MW FLSmidth MAAG Max Drive gear systems. FLSmidth says that the mill is the largest VRM ever to be installed in a cement plant in terms of dimension, operating capacity and installed power. In addition to the OK Mill, FLSmidth supplied the process and layout engineering, along with site advisory. The supporting equipment included FLSmidth Pfister weigh feeders, FLSmidth Airtech process bag filters, process fans and auxiliary equipment from raw material hopper discharge to process bag filter discharge. It was put in operation in September 2018
Shah Cement Industries is the largest cement producing plant in Bangladesh, with a capacity of 8.0Mt/yr. The company is part of the Abul Khair Group, the largest business conglomerate in Bangladesh. It produces three main cement products including CEM II – Portland Composite Cement and CEM –III Blast Furnace Cement. Both products use slag.
