High Performance Natural Fiber-Nanoclay Reinforced Cement Nanocomposites

von: It-Meng Low, Ahmad Hakamy, Faiz Shaikh

Springer-Verlag, 2017

ISBN: 9783319565880 , 101 Seiten

Format: PDF, OL

Kopierschutz: Wasserzeichen

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High Performance Natural Fiber-Nanoclay Reinforced Cement Nanocomposites


 

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