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Other alkali-activated cementitious systems
Published in Caijun Shi, Pavel V. Krivenko, Della Roy, Alkali-Activated Cements and Concretes, 2003
Caijun Shi, Pavel V. Krivenko, Della Roy
If MgO powder is mixed with a solution of MgCl2, it will harden and give a very high strength (up to 200MPa ). This mixture is called magnesium oxychloride cement or Sorel cement. Because this hardened paste has very
3D-printed concrete: applications, performance, and challenges
Published in Journal of Sustainable Cement-Based Materials, 2020
Ayesha Siddika, Md. Abdullah Al Mamun, Wahid Ferdous, Ashish Kumer Saha, Rayed Alyousef
The limitations of cement-based printing materials while applying powder-based technique can overcome by using geopolymer-based materials [8], magnesium oxychloride cement (Sorel cement) and fiber-reinforced cement polymer [37]. Uses of slag-based geopolymer with fine sand, which is activated with a silicate-based activator, were proposed by Xia and Sanjayan [62]. This geopolymer has sufficient deposit ability and dimensional accuracy in powder-based printing systems and is scalable to print large structures. Slags contain high amount of silica and are amorphous and pozzolanic in nature, thus they are important for geopolymer; additionally, slag can enhance buildability of printable geopolymer mixture [48]. But the slag used in powder-based printing systems was recommended to be up to 50% of the total binder because the amount of slag beyond optimum level causes a very low green strength, which cannot resist the pressure in the de-powdering process [37,39].
Stanislas Sorel’s zinc-based paints
Published in Transactions of the IMF, 2020
Sorel’s invention of oxychloride of magnesium cement was taken up in the U.S.A. in the manufacture of ‘artificial stone’ by the Union Stone Co. (Boston). This artificial marble proved a suitable ornamental building material,55 but was also demonstrated as suitable for grinding and polishing stones, tiles, and even billiard balls,55 as well as statues. While Sorel cement was deemed technologically far superior, it was far more expensive than Portland cement and thus did not see a large-scale application.56