纳米颗粒和PVA纤维对粉煤灰基地聚合物耐久性和强度的影响研究

发布时间：2023-02-09 07:21

　　

【文章页数】：178 页

【学位级别】：博士

【文章目录】：
Acknowledgement
Abstract
Chapter 1 Introduction
    1.1 Problem description and motivation
    1.2 Scope and objective of research
    1.3 Overview of the research
Chapter 2 Literature Review
    2.1 Introduction
    2.2 Geopolymers
    2.3 Precursors for alkali activation
        2.3.1 Metakaolin
        2.3.2 Metallurgical Slags
        2.3.3 Mineral processing tailings
        2.3.4 Coal bottom ash
        2.3.5 Palm oil fuel ash
        2.3.6 Rice husk ash
        2.3.7 Waste glass
        2.3.8 Waste ceramic
        2.3.9 Catalyst residues
        2.3.10 Fly ash
    2.4 Characterization of fly ash
        2.4.1 Physical properties
        2.4.2 Chemical properties
        2.4.3 Mineralogical properties
    2.5 Utilization of fly ash
        2.5.1 Removal of heavy metals from wastewater
        2.5.2 Removal of dyes from wastewater
        2.5.3 Fly ash as a sustainable building material
    2.6 Fly ash based Geopolymer
    2.7 Microstructure / nanostructure of fly ash geoplymer
    2.8 Factors affecting on the fly ash based geopolymer
        2.8.1 Influence of curing temperature
        2.8.2 Effect of alkaline solution
        2.8.3 Influence of binder ratio
    2.9 Durability of fly ash based geopolymer
    2.10 Nanomaterial admixtures for fly ash binders
        2.10.1 Influence on mechanical properties and microstructure
        2.10.2 Effect on workability
        2.10.3 Influence on durability properties
    2.11 Fiber reinforced fly ash geopolymer
Chapter 3 PVA fibers and SiO₂ NPs reinforced fly ash based geopolymer
    3.1 Introduction
    3.2 Materials and experimental methods
        3.2.1 Ingredients
        3.2.2 Sample preparation
        3.2.3 Strengths measurement
        3.2.4 Durability Measurement
        3.2.5 Microstructural Study
    3.3 Results and Discussion
        3.3.1 Density analysis
        3.3.2 Compressive Test
        3.3.3 Water absorption and sulphate resistance test
        3.3.4 Ultrasonic pulse velocity test
        3.3.5 Flexural strength & split tensile strength
        3.3.6 Microstructural Analysis
    3.4 Conclusion
Chapter 4 Enhanced mechanical and durability properties of fly ash based geopolymer using PVA/SiO₂ NPs additive
    4.1 Introduction
    4.2 Materials and methods
        4.2.1. Materials
        4.2.2. Specimens preparation
    4.3 Testing Methods
        4.3.1. Fracture Test
        4.3.2. Monotonic compression test
        4.3.3. Cyclic compression test
        4.3.4. Fire resistance
        4.3.5. Freeze and Thaw resistance
        4.3.6. Pull out test
        4.3.7. TGA-DTA analysis
        4.3.8. Rapid chloride permeability test (RCPT)
    4.4 Microstructural Analysis
    4.5 Results and Discussion
        4.5.1 Compressive strength
        4.5.2 Fracture Toughness
        4.5.3 Cyclic Response
        4.5.4 Fire Resistance
        4.5.5 Freeze-Thaw Effect
        4.5.6 Thermal Analysis
        4.5.7 RCPT Analysis
        4.5.8 Pull out Test
        4.5.9 Microstructural Studies
    4.6 Conclusions
Chapter 5 Effect of metal oxide (V₂O₅) in fly ash based geopolymer
    5.1 Introduction
    5.2 Materials and Methods
        5.2.1 Ingredients
        5.2.2 Experimental Methods
    5.3 Results & Discussion
        5.3.1 Material characterization
        5.3.2 TGA Analysis
        5.3.3 Strengths Analysis
        5.3.4 Durability performance
        5.3.5 Microstructure study of composite
    5.4 Conclusion
Chapter 6 Application of fly ash based geopolymer for heavy metal removal and dyedegradation
    6.1 Introduction
    6.2 Materials and Experimental Methods
        6.2.1 Ingredients
        6.2.2 Synthesis and characterization of Iron Oxide nanoparticles
        6.2.3 Preparation of the cementitious composite
        6.2.4 Characterization of the cementitious composite
        6.2.5 Strength Analysis
        6.2.6 Effect on Heavy metals (Pb²⁺, Cr³⁺, Cd²⁺ and Cu²⁺)
        6.2.7 Dye degradation Study
        6.2.8 Adsorption Isotherm
    6.3 Results and Discussions
        6.3.1 Characterization of the Iron Oxide Nanoparticles
        6.3.2 Characterization of composite material
        6.3.3 Activity of FA10C as a building materials
        6.3.4 Heavy metal adsorption
        6.3.5 Heavy metals desorption
        6.3.6 Dye degradation Analysis
        6.3.7 Langmuir Isotherm
    6.4 Conclusion
Chapter 7 Conclusion and future recommendations
    7.1 Concluding Remarks
    7.2 Future recommendations
Chapter 8 References



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