Sulfur concrete

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Sulfur concrete

Sulfur concrete is a composite construction material, composed mainly of sulfur and aggregate (generally a coarse aggregate made of gravel or crushed rocks and a fine aggregate such as sand). Cement and water, important compounds in normal concrete, are not part of sulfur concrete. The concrete is heated above the melting point of sulfur ca. 140 °C in a ratio of between 12% and 25% sulfur, the rest being aggregate. [1] After cooling the concrete reaches a high strength, not needing a prolonged curing like normal concrete. Sulfur concrete is resistant to some compounds like acids which attack normal concrete, however unlike ordinary concrete, it cannot withstand prolonged high heat without adjusted mixture. [2] Sulfur concrete was developed and promoted as building material to get rid of large amounts of stored sulfur produced by hydrodesulfurization of gas and oil. Sulfur concrete is also a possible building material for a lunar base. As of 2011, sulfur concrete has only been used in small quantities when fast curing or acid resistance is necessary. [3] [4]
More recently it has been proposed as an alternative as a carbon neutral construction material. Its waterless, low energy requiring production in comparison to regular concrete and cement makes it an excellent alternative for highly polluting portland cement-based materials. Due to improvements in production techniques, it can be produced in high quality and in large quantities.[ citation needed ]
A green sulfur concrete sleepers were used in Belgium. [5]
The material has been suggested by researchers as a potential building material on Mars, where water and limestone are not available, but sulfur is. [6]

  • Asphalt concrete, similar aggregate material using 'bitumen' as a binder

  • Lunarcrete: Sulfur based "Waterless Concrete", for proposals for its use as a lunar construction material

  • Cenocell

  • ↑ Abdel-Mohsen Onsy Mohamed; Maisa El-Gamal (15 July 2010). Sulfur Concrete for the Construction Industry: A Sustainable Development Approach. J. Ross Publishing. p. 109. ISBN 978-1-60427-005-1.

  • ↑ Nick Jones. "Mixing it on Mars" (PDF). The Concrete Centre.

  • ↑ Brandt, Andrzej Marek (1995). Cement-based composites: Materials, mechanical properties and performance. p. 52. ISBN 978-0-419-19110-0.

  • ↑ Sulfur Concrete – A New Construction Material (PDF). Prestressed Concrete Institute. 1974. pp. 86–95. Archived from the original on 2012-03-22.

  • ↑

  • ↑ Wan, Lin, Roman Wendner, and Gianluca Cusatis. "A novel material for in situ construction on Mars: experiments and numerical simulations." Construction and Building Materials 120 (2016): 222-231.

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