Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 389, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2023.131605
Keywords
Supplementary Cementitious Materials (SCMs); Metakaolin (MK); Self-consolidating concrete (SCC); Durability; Microstructure; CO2 emission
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Self-consolidating concrete (SCC), which requires no vibration and has good filling ability, offers advantages over regular concrete in terms of construction time, labor cost, and noise pollution. The production of cement, due to population growth and increased demand, leads to higher carbon dioxide (CO2) emissions and air pollution. Supplementary Cementitious Materials (SCMs), such as Metakaolin (MK), have been proposed as alternatives to reduce cement usage and CO2 emissions. This study reviews the use of MK in SCC, examining its effects on fresh, hardened, and durability properties, as well as microstructure, and provides comprehensive data on the behavior of SCCs incorporating MK.
Self-consolidating concrete (SCC) with filling ability and no need for vibration, is advantageous over regular concrete due to its less construction time, labor cost, and noise pollution. Population growth and the demand for construction materials such as cement, lead to the rise in carbon dioxide (CO2) emissions and higher air pollution. An approximation of 6% of the total CO2 emission is imputed to the cement production industry. In this regard, Supplementary Cementitious Materials (SCMs) have been proposed to reduce cement utilization and CO2 emission. Metakaolin (MK) is an alternative that can be used to partially replace cement to save energy and reduce the environmental damage caused by cement consumption. A review of utilization of metakaolin on the properties of self-consolidating concrete is carried out in this study concerning fresh, hardened, and durability properties as well as microstructure. As the result, satisfactory data have been collected which provide comprehensive information regarding the behavior of SCCs incorporating MK.
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