Deformation and mechanical properties of the expansive cements produced by inter-grinding cement clinker and MgOs with various reactivities

1 Deformation and mechanical properties of the expansive cements produced by inter-grinding 1 cement clinker and MgOs with various reactivities 2 3 4 Liwu Mo 1,2 *, Meng Liu 1 , Abir Al-Tabbaa 2 , Min Deng 1,3 5 1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, China. 6 210009 7 2. Department of Engineering, University of Cambridge, Cambridge, UK. CB2 1PZ. 8 3. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, China. 210009 9 * Corresponding author: Email: [email protected], Tel. (86) 025 83587218 10 11 12 Abstract 13 14 15 Magnesia (MgO) either intrinsically contained in cement clinker or prepared separately as 16 expansive additive has been used to compensate for the shrinkage of cementitious materials. 17 In this study, for improving the homogenous distribution of MgOs, the cement clinker was 18 inter-ground with MgO expansive additives with various reactivities ranging from 50s to 400s 19 to prepare series of expansive Portland cements and blended cements with incorporation of 20 slag and fly ash. The deformations and mechanical properties of the expansive cements were 21

Deformation and mechanical properties of the expansive cements produced by inter-grinding cement clinker and MgOs with various reactivities

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