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Concrete debris was once routinely shipped to landfills for disposal, but recycling is increasing due to improved environmental awareness, governmental laws and economic benefits. Concrete, which must be free of trash, wood, paper and other such materials, is collected from demolition sites and put through a crushing machine, often along with ...
[26] These two influential scholars helped lay the foundation for a concrete environmental education program, known as nature study, which took place in the late 19th and early 20th century. The nature study movement used fables and moral lessons to help students develop an appreciation of nature and embrace the natural world. [27]
Concrete from a building being sent to a portable crusher. This is the first step in recycling concrete. Crushing concrete from an airfield. Concrete recycling is the use of rubble from demolished concrete structures. Recycling is cheaper and more ecological than trucking rubble to a landfill. [1]
The Concrete Sustainability Council is an industry organization and standards body focused on decreasing the environmental impact of cement, concrete, and aggregate. [ 1 ] [ 2 ] The group was originally launched by the World Business Council for Sustainable Development as the Concrete Sustainability Initiative in 2013.
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
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Self-healing concrete would not only make the material more sustainable, but it would also contribute to an increase in the service life of concrete structures and make the material more durable and environmentally friendly. [3] [4]
Sustainable development overlaps with the idea of sustainability which is a normative concept. [5] UNESCO formulated a distinction between the two concepts as follows: "Sustainability is often thought of as a long-term goal (i.e. a more sustainable world), while sustainable development refers to the many processes and pathways to achieve it." [6]