石灰石硅酸盐水泥 and 可持续性

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Portland 水泥 manufacturers have developed a modified formulation of their most important product to respond to growing calls for reducing embodied carbon associated with construction. Portland-limestone 水泥 (PLC) is a blended 水泥 with a higher limestone content, which results in a product that works the same, 相同的措施, 并且执行相同的操作, but with a reduction in carbon foot打印 of 10% on average.

可持续性 encompasses many aspects designed to improve construction practices, including: more efficient use of natural resources, better thermal performance of structures, 减少对环境的影响, 专注于具身碳. One area of growing concern to environmental leaders is CO2 emissions. 和所有建筑材料一样, portland 水泥 has an environmental foot打印, and it’s often described in terms of greenhouse gas (GHG) equivalents. 水泥 is made by grinding clinker—the main energy intensive ingredient—to a fine powder. Producers know that replacing some of the clinker in portland 水泥 with ground limestone offers benefits, the most important being that it reduces the embodied CO2 of the 水泥.

Modifying a concrete mix design to replace higher carbon materials with lower carbon ingredients is an effective strategy to reduce its environmental foot打印. 而美国.S. standard for portland 水泥 allows for up to 5% of clinker to be replaced by limestone, the standard for blended 水泥 allows for 5% to 15% limestone repla水泥 in PLC (Type IL). The same clinker is used to make portland 水泥 and portland-limestone 水泥, 但在PLC中就少了. And concrete mixes designed with PLCs are compatible with all supplementary 水泥ing materials (SCMs), so when you substitute PLC for ordinary portland 水泥, you can continue to use all the other materials you use to make concrete for an even greater reduction in carbon foot打印.

除了水, concrete is the most-used material on the planet, representing about 50% of all manmade materials by mass. Because society places so much concrete each year, even small changes to its formulation can have dramatic effects on the construction industry’s annual carbon foot打印—and benefits everyone on the planet. For instance, if all 水泥 used in the U.S. in 2019 had been converted to PLC (Type IL), it would have reduced CO2 emissions by 8.100万公吨.S. EPA says is the equivalent of taking 1.75 million cars off the road for an entire year.

As a key part of the construction industry, 水泥 manufacturers have already made major contributions to help address global climate change. They recognize that they can play a big role and continue to innovate for better binders with even more favorable environmental performance. PLC经过广泛测试, 成熟的技术, readily available through the same supply chain that already successfully serves developers, 建筑商, 和承包商. It offers the design community a new way to think about concrete while still offering the resilience and sustainability they’ve come to expect from it.

欲了解更多信息,请访问 www.greener水泥.com.


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