The concretecomposed of aggregates such as sand and gravel, water and cement, represents one of the major sources of CO2 emissions due to the production process of the cement itself. This material is generally produced by mixing approximately 80% limestone and 20% clay, which are then crushed and heated to temperatures of up to 1450°C. The high energy consumption required at this stage generates a significant amount of carbon dioxide, contributing substantially to air pollution.
To reduce the environmental impact of cement, new raw materials are being tested. Among these, we had already told you about C-Crete Technologies and its revolutionary ecological cement which aims to reduce the environmental impact in construction. Using granite And zeolitethis startup has managed to produce a concrete that not only eliminates CO₂ emissions, but absorbs them during its life cycle.
An innovative material that can really change the way we think about concrete, with high performance and a decidedly lower ecological impact compared to traditional cements. Unlike limestone, granite does not require high temperatures to be worked, therefore eliminating the need for fossil fuels and eliminating CO2 emissions during production.
Granite based cement properties and performance
Granite-based cement has characteristics similar to those of Portland cement, but without the emissions typical of the latter. Granite, being rich in silicon, aluminum and calcium, does not contain carbon and does not release it during processing. This cement reaches a compressive strength greater than 5,000 PSI, maintaining durability standards and technical characteristics such as workability and setting times similar to those of traditional cements. Thanks to the abundance of granite, its production should not lead to availability or cost problems, therefore being both a sustainable and economically accessible solution.
Thanks to this feature, C-Crete granite concrete was used for the construction of a concrete slab of approximately 9.2 cubic meters in a building in New Yorkmore precisely in the new JPMorgan Chase headquarters in Manhattan. This skyscraper, destined to become one of the new symbols of the city, is being built with an alternative that guarantees zero emissions. C-Crete’s goal is to continue to exploit resources such as granite, abundant in the earth’s crust, to produce sustainable, carbon-free cement.
