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http://dx.doi.org/10.5345/JKIBC.2012.12.3.284

Effects of Cement Fineness Modulus (CFM) on the Fundamental Properties of Concrete  

Noh, Sang-Kyun (Department of Building Environment Technology, Korea Conformity Laboratories)
Han, Cheon-Goo (Department of Architectural Engineering, Cheong-ju University)
Publication Information
Journal of the Korea Institute of Building Construction / v.12, no.3, 2012 , pp. 284-290 More about this Journal
Abstract
Cement Fineness Modulus (CFM) is a method of expressing the distribution of particle sizes of cement in numeric form. If CFM is controlled through crush process of cement without modifying the chemical components or mineral composition of cement, it is judged to be able to produce a cement satisfying various requirements because it is estimated to enable various approaches to cement such as high early strength, moderate heat, low heat cement and so on. Therefore, in this study, as basic research for manufacturing special cement utilizing the controls of CFM, the intention was to review the impacts of CFM on the fundamental properties of concrete. To summarize the result, as mixture characteristics of fresh concrete, ratio of small aggregate and unit quantity were gradually increased, securing greater fluidity, with an increase in CFM, while the amount of AE and SP were reduced gradually. In addition, setting time was delayed as CFM increased. Furthermore, compression strength was relatively high during initial aging as CFM became smaller, but as time passed, compression strength became smaller, and it showed the same level of strength as aging time passed about three years.
Keywords
cement fineness modulus; mix proportion; setting time; compressive strength; later-age strength;
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