5.5.1 Material Model -- 5.6 Closure -- References -- 6 Macro-level Performance Assessment of Concrete: Experimental Fracture Analysis -- 6.1 Introduction -- 6.2 Fracture Analysis of Concrete -- 6.3 Experimental Investigation -- 6.3.1 Details of Test Setup and Test Procedure -- 6.4 Results -- 6.4.1 Load-CMOD Relationship -- 6.4.2 Fracture Energy -- 6.4.3 Double-upper KK Fracture Parameter -- 6.5 Discussion -- 6.5.1 Influence of Aggregate Type -- 6.5.2 Influence of Mix Design Method -- 6.5.3 Influence of the Size of the Specimen -- 6.6 Comparative Study on upper G Subscript upper FGF -- 6.7 Closure -- References -- 7 Performance Assessment of Concrete: Meso-, Micro-, Nano-level, and Physio-chemical Analysis -- 7.1 Introduction -- 7.2 Multi-scale Characterization of Concrete -- 7.2.1 Thermogravimetric Analysis (TGA) -- 7.2.2 Nanoindentation Technique -- 7.2.3 Image Analysis of Back-Scattered Electrons (BSE) Images -- 7.2.4 Image Analysis of X-Ray Microtomographic Images -- 7.3 Experimental Investigation -- 7.3.1 Sample Preparation for Thermogravimetric Analysis -- 7.3.2 Sample Preparation for Nanoindentation and SEM -- 7.3.3 Sample Preparation for X-Ray Microtomography -- 7.4 Thermogravimetric Analysis -- 7.4.1 Estimation of Degree of Hydration -- 7.4.2 Calculation of Mass Loss at Different Phases and upper W Subscript upper BWB -- 7.4.3 Estimation of upper W Subscript upper B normal infinityWBinfty -- 7.4.4 Degree of Hydration (alphaα) -- 7.5 Investigation on the Presence of Pozzolanic Material in RCA -- 7.5.1 CH Bound Water and Free CH Content -- 7.5.2 Fourier Transform Infrared Spectroscopy Analysis -- 7.6 Relationship Between Degree of Hydration and Compressive Strength -- 7.7 Nanoindentation -- 7.7.1 Results and Discussion -- 7.8 Image Analysis of BSE Images -- 7.8.1 Results and Discussion -- 7.9 X-Ray Microtomography. |