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Contents
6
1 Introduction
9
References
14
2 Materials and Methodology
17
2.1 Materials
17
2.2 Sample Preparation
19
2.2.1 Cement Nanocomposite
19
2.2.2 Untreated and Treated Hemp Fabric-Reinforced Cement Nanocomposites
20
2.2.3 Thermal Treatment of Nanoclay
20
2.2.4 Curing and Specimens
21
2.3 Material Characterisation
21
2.3.1 X-Ray Diffraction
21
2.3.2 High Resolution Transmission Electron Microscopy
22
2.3.3 Synchrotron Radiation Diffraction
22
2.3.4 Scanning Electron Microscopy
22
2.3.5 Thermogravimetric Analysis
23
2.4 Physical Properties
23
2.5 Mechanical Properties
24
2.5.1 Compressive Strength
24
2.5.2 Flexural Strength and Fracture Toughness
24
2.5.3 Impact Strength
25
References
25
3 Hemp Fabric Reinforced Organoclay–Cement Nanocomposites: Microstructures, Physical, Mechanical and Thermal Properties
26
3.1 Introduction
26
3.2 Results and Discussion
27
3.2.1 High Resolution Transmission Electron Microscopy
27
3.2.2 XRD Analysis
28
3.2.3 Porosity and Density
30
3.2.4 Mechanical Properties
31
3.2.5 Flexural Strength
31
3.2.6 Flexural Modulus
34
3.2.7 Fracture Toughness
35
3.2.8 Thermal Stability
38
3.2.9 Impact Strength
41
3.3 Conclusions
42
References
42
4 Nanoclay and Calcined Nanoclay-Cement Matrix: Microstructres, Physical, Mechanical and Thermal Properties
44
4.1 Introduction
44
4.2 Results and Discussion
45
4.2.1 XRD Analysis
45
4.2.2 Energy Dispersive Spectroscopy Analysis
45
4.2.3 High Resolution Transmission Electron Microscopy
47
4.3 Quantitative X-Ray Diffraction Analysis
48
4.3.1 Calculation of Ca(OH)2 Content in Cement Nanocomposites
50
4.3.2 Porosity, Water Absorption and Density
51
4.3.3 Compressive Strength
53
4.3.4 Flexural Strength
54
4.3.5 Fracture Toughness
55
4.3.6 Impact Strength
56
4.3.7 Rockwell Hardness
56
4.3.8 Thermal Stability
57
4.4 Cost-Benefit Analysis and Applications
58
4.5 Conclusions
59
References
59
5 Chemically-Treated Hemp Fabric and Calcined Nanoclay Reinforced Cement Nanocomposites: Microstructures, Physical, Mechanical and Thermal Properties
62
5.1 Introduction
62
5.2 Results and Discussion
63
5.2.1 XRD Analysis of Calcined Nanoclay
63
5.2.2 High Resolution Transmission Electron Microscopy
64
5.2.3 Surface Morphology of Hemp Fabric
65
5.2.4 Crystallinity Index of Hemp Fabric
66
5.2.5 Quantitative X-Ray Diffraction Analysis of Nano-Matrix
67
5.2.6 Porosity and Density
69
5.2.7 Flexural Strength of Hemp Fabric-Reinforced Cement Composites
70
5.2.8 Fracture Toughness
74
5.2.9 Failure Mechanisms
75
5.2.10 TGA of Hemp Fabric
77
5.2.11 Impact Strength
77
5.2.12 Thermal Stability
78
5.3 Conclusions
80
References
81
6 Durability of Naoh-Treated Hemp Fabric and Calcined Nanoclay-Reinforced Cement Nanocomposites
84
6.1 Introduction
84
6.2 Results and Discussion
84
6.2.1 Nanocomposites
84
6.2.2 Hemp Fabric-Reinforced Nanocomposites
86
6.2.3 Flexural Strength of Nanocomposites
88
6.2.4 Flexural Strength of Hemp Fabric-Reinforced Nanocomposites
89
6.2.5 Microstructural Analysis
90
6.3 Cost and Applications
93
6.4 Conclusions
93
References
94
7 Summary and Concluding Remarks
96
7.1 Nanoclay-Cement Nanocomposites
96
7.2 Hemp Fabric-Reinforced Nanoclay-Cement Nanocomposites
97
7.3 Calcined Nanoclay-Cement Nanocomposites
97
7.4 Un-Treated and NaOH Treated Hemp Fabric-Reinforced Cement Composites
98
7.5 NaOH Treated Hemp Fabric Reinforced Calcined Nanoclay-Cement Nanocomposites
99
7.6 Durability of NaOH Treated Hemp Fabric Reinforced Calcined Nanoclay-Cement Nanocomposites Subjected to Wet/Dry Cycles
100
7.7 Concluding Remarks
101
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