Clinker is a calcined and quenched material that requires high temperatures to create the desired mineralogy, leading to emissions associated with fuels for thermal energy, and chemical-CO 2 emissions from limestone decarbonation in its production. ![]() Significant greenhouse gas (GHG) emissions are attributable to cement-based materials production, ~8% of global anthropogenic CO 2 emissions 5, which is primarily a function of producing clinker (the precursor to cement). Concrete consists of fine and coarse aggregates (sand and crushed rocks), water, admixtures, and a hydraulic binder (cement) that reacts with the water to glue these constituents together into an artificial conglomerate. With such urban growth, the demand for concrete will continue to rise, with rates exceeding those of population growth 4.Ĭoncrete is uniquely poised to meet the needs for many civil infrastructure and building systems because of the broad availability of the primary constituents of concrete, and the strength and durability achievable with this material 1, 2. As the world population grows, the development, maintenance, and extension of urban areas will grow projected estimates show that by 2030, nearly 1 billion (22% increase compared to 2018) more people will live in urban areas 3. There are several uses of cement in such materials, such as in concrete and mortar (all composite materials using cement are referred to herein as concrete, which is its most common application). Similar content being viewed by othersĬement-based materials are essential for urban development, and there is no alternative material that meets their functional capacity 1, 2. ![]() These findings show that the flexibility within current concrete design approaches can contribute to climate mitigation without requiring heavy capital investment in alternative manufacturing methods or alternative materials. The studied methods similarly result in more efficient utilization of resources by lowering cement demand by up to 65%, leading to an expected reduction in all other environmental burdens. Here, we show that a combination of manufacturing and engineering decisions have the potential to reduce over 76% of the GHG emissions from cement and concrete production, equivalent to 3.6 Gt CO 2-eq lower emissions in 2100. While this is a well-studied source of emissions, the consequences of efficient structural design decisions on mitigating these emissions are not yet well known. The production of concrete, more particularly the hydraulic cement that glues the material together, is one of the world’s largest sources of greenhouse gas (GHG) emissions. The first two expected to come online are in Edmonton and Brevik, Norway.Growing urban populations and deteriorating infrastructure are driving unprecedented demands for concrete, a material for which there is no alternative that can meet its functional capacity. Heidelberg has nine carbon capture and storage projects planned across North America, Europe and the U.K. Projects underwayĪt Heidelberg and Lafarge - two of the world's leading cement manufacturers - work is well underway to marry cement production with carbon capture technology. ![]() While CCS technology has its limitations - in particular, the geology of where projects are located - the number of CCS projects is on the rise as companies look for ways to decarbonize where no other easy option is available. Power plants and fertilizer plants are among other sectors also turning to the technology. The technology, which has lately generated lots of buzz within the oilpatch, is also increasingly being seen as a remedy for so-called " hard-to-abate" industries - like cement, iron and steel production - where much of the carbon dioxide emissions are created through process reactions and can't be eliminated by switching to renewable fuels. ![]() Corwyn Bruce is project director for the Edmonton CCUS project for Heidelberg Materials.
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