@inbook{7472025f86f64bb68a8420b86298c4c2,
title = "Metakaolin",
abstract = "Metakaolin (MK) is known to be a highly pozzolanic material that can be used in concrete. MK is usually produced by heating kaolin-containing clays, within the temperature range of about 600–900 ℃. This chapter summarizes the utilization of metakaolin in relevant worldwide standards, mainly in Europe and North America. The health, safety and environmental sustainability concerns on using metakaolin as a supplementary cementitious material are also addressed in this chapter. It is reported that MK incorporation has benefits on both early-age and long-term properties. On the other hand, this chapter also reports that the results of heat of hydration and rate of reaction in metakaolin-blended concrete are controversial and need further investigation. Overall, the optimum level of cement replacement by MK is around 10–20%, which provides concrete the maximum strength. Metakaolin appears to have an excellent potential as a supplementary cementitious material in structures made of high-performance concrete, because it controls deleterious expansion due to alkali-silica reaction in concrete (depending on the nature of the aggregate), and reduces the ingress of chloride by improving the microstructure and chloride binding behavior.",
keywords = "High-performance concrete, Metakaolin, Properties, Supplementary cementitious material, Sustainability",
author = "F. Wang and K. Kovler and Provis, {J. L.} and A. Buchwald and M. Cyr and C. Patapy and S. Kamali-Bernard and L. Courard and K. Sideris",
note = "Publisher Copyright: {\textcopyright} RILEM 2018.",
year = "2018",
doi = "https://doi.org/10.1007/978-3-319-70606-1_5",
language = "الإنجليزيّة",
series = "RILEM State-of-the-Art Reports",
pages = "153--179",
booktitle = "RILEM State-of-the-Art Reports",
}