METHOD FOR PRODUCING SUPPLEMENTARY CEMENTITIOUS MATERIAL
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United States of America Patent
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Issued Date -
Oct 24, 2024
app pub date -
May 4, 2022
filing date -
May 4, 2022
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Abstract
A method for producing a supplementary cementitious material from concrete waste and similar materials includes the steps of i) providing a starting material comprising hydrated cement and aggregate comprising silicate and/or alumino-silicate, ii) hydrothermal treatment of the starting material provided in step i) to obtain a hydrothermally activated material, and iii) carbonation of the hydrothermally activated material of step ii) to provide the supplementary cementitious material, as well as supplementary cementitious material obtainable by the method, hydraulic binder comprising the supplementary cementitious material and use of the supplementary cementitious material and of the hydraulic binder for making hydraulic building materials.
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