Nanotechnology in Construction for Circular Economy : Proceedings of NICOM7, 31 October-02 November, 2022, Melbourne, Australia.

Intro -- Organization -- NICOM7 Preface -- Contents -- Nonlinear Wind-Induced Vibration Behaviors of Multi-tower Suspension Bridges Under Strong Wind Conditions -- 1 Introduction -- 2 NAFM of Bridges -- 2.1 Three-Tower Suspension Bridge -- 2.2 2D Displacement Responses of the Closed-Box Girder -- 3 Nonlinear Flutter and Post-Flutter Behaviors of a Multi-tower Bridge -- 3.1 Turbulence Flow at Bridge Site -- 3.2 Flutter and Post-Flutter Behaviors Under Uniform Flow -- 3.3 Displacement Responses and Failure Modes Under Turbulent Flow -- 3.4 Comparison of Displacement Responses -- 4 Concluding Remarks -- References -- Thermal Transfer Effects of CRTS II Slab Track Under Various Meteorological Conditions -- 1 Introduction -- 2 Meteorological Parameter Collection -- 3 Heart Transfer Model -- 4 Conclusions -- References -- Investigation on Superhydrophobicity and Piezoresistivity of Self-sensing Cement-Based Sensors Using Silane Surface Treatment -- 1 Introduction -- 2 Methods -- 3 Results and Discussion -- 3.1 Hydrophobic Behavior -- 3.2 Piezoresistivity -- 4 Conclusions -- References -- Use of Brown Coal Ash as a Replacement of Cement in Concrete Masonry Bricks -- Composition of Alkali-Silica Reaction Products in Laboratory and Field Concrete -- 1 Introduction -- 2 Methods -- 2.1 ASR Testing as Per AMBT and SPSM -- 2.2 Analysis of the Composition of the ASR Products -- 3 Results and Discussion -- 4 Conclusions -- References -- Behavior of Hybrid Engineered Cementitious Composites Containing Nanocellulose -- 1 Introduction -- 2 Specimen Preparation -- 3 Results of Uniaxial Compression Test -- 4 Conclusions -- References -- Investigation of ASR Effects on the Load-Carrying Capacity of Reinforced Concrete Elements by Ultra-Accelerated Laboratory Test -- 1 Introduction -- 2 Methods -- 2.1 Materials and Mix Proportions.

2.2 Specimen Fabrication and Steam-Curing Procedure -- 2.3 Expansion Measurements -- 2.4 Mechanical Property Testing -- 2.5 Load Carrying Capacity Testing Under Four-Point Loading -- 3 Results and Discussion -- 3.1 Cracking of Specimens -- 3.2 Expansion of Concrete Prisms -- 3.3 Mechanical Properties of Concrete Under Accelerated ASR Test Conditions -- 3.4 Load Carrying Capacity of Reinforced Concrete Beams -- 4 Conclusions -- References -- 3D printed Ultra-High Performance Concrete: Preparation, Application, and Challenges -- 1 Introduction -- 2 Preparation of 3DP-UHPC -- 2.1 Design of UHPC for 3DCP -- 2.2 Manufacturing of 3DP-UHPC -- 2.3 Mechanical Anisotropy of 3DP-UHPC -- 3 Applications of 3DP-UHPC -- 3.1 Large-Scale Special Components -- 3.2 As the Reinforcement Materials -- 3.3 As Protection Against Explosion and Impact -- 4 Challenges of 3DP-UHPC -- 4.1 Standardization of Materials -- 4.2 Flexible Design of Structures -- 5 Summary and Outlook -- References -- Nanosilica-Modified Hydrogels Encapsulating Bacterial Spores for Self-healing Concrete -- 1 Introduction -- 2 Methods -- 2.1 Preparation of Bacterial Spores -- 2.2 Preparation of Hydrogels Encapsulating Bacterial Spores -- 2.3 Observation of Interface Between Hydrogel and Cement Matrix -- 2.4 Revival of Bacterial Spores Encapsulated in Hydrogels After Exposure to Alkali Environments -- 3 Results and Discussion -- 4 Conclusions -- References -- Reusing Alum Sludge as Cement Replacement to Develop Eco-Friendly Concrete Products -- 1 Introduction -- 2 Methodology -- 2.1 Materials -- 2.2 Sample Preparation -- 2.3 Experimental Methods -- 3 Results and Discussion -- 3.1 Material Characterization -- 3.2 Reaction Degree and Hydration Mechanism of Sludge -- 3.3 Chemo-Mechanical Properties of Pastes and Strength of Blocks -- 4 Conclusions -- References.

Role of Aggregate Reactivity, Binder Composition, and Curing Temperature on the Delayed Ettringite Formation and Associated Durability Loss in Concrete -- 1 Introduction -- 1.1 Project Outline -- 2 Methods -- 3 Results and Discussion -- 3.1 DEF in Concrete -- 3.2 ASR-DEF in Concrete -- 4 Conclusions -- References -- Effect of Blending Alum Sludge and Ground Granulated Blast-Furnace Slag as Cement Replacement to Mitigate Alkali-Silica Reaction -- 1 Introduction -- 2 Methods -- 2.1 Materials -- 2.2 Experimental Protocol -- 3 Results and Discussion -- 3.1 Compressive Strength -- 3.2 ASR-Induced Expansion -- 3.3 Phase Analysis of the Mortars -- 3.4 Microstructural Characteristics and Elemental Analysis -- 4 Conclusions -- References -- Optimisation of Limestone Calcined Clay Cement Based on Response Surface Method -- 1 Introduction -- 2 Methods -- 2.1 Materials -- 2.2 Design of Mixtures -- 3 Mathematical Modelling and Statistical Analysis -- 3.1 ANOVA and Adequacy Checking -- 3.2 Interaction Effects on Response -- 3.3 Response Surface Optimization Analysis -- 4 Conclusion -- References -- Designing Waterborne Protective Coatings Through Manipulating the Nanostructure of Acrylic-Based Nanocomposites -- 1 Introduction -- 2 Methods -- 2.1 Materials -- 2.2 Preparation of Waterborne Acrylic Copolymer, Acrylic-Based Coatings and Coating Films -- 2.3 Characterization -- 3 Results and Discussion -- 3.1 Enhanced UV Protection Through the Formation of an Acrylic-Based Nanocomposite -- 3.2 Enhanced Corrosion Resistance of Acrylic-Alkyd Coating with Worm-Like Nanostructure -- 3.3 Multifunctional Acrylic-PDMS Coating with Spherical-Like Nanostructure -- 4 Conclusion -- 5 Data Availability Statement -- References -- Analysis of Categories That Delay Global Construction Projects -- 1 Introduction -- 2 Literature Review -- 3 Research Method.

3.1 Research Scope and Select Studies -- 3.2 Factors Identified and Classification into Categories -- 3.3 Analysis of Factor Categories -- 4 Results and Discussion -- 5 Conclusion -- References -- Chloride Penetration in Low-Carbon Concrete with High Volume of SCM: A Review Study -- 1 Introduction -- 2 Chloride Penetration in LCC -- 2.1 Effect of SCM Content on Diffusion Coefficients -- 2.2 Effect of Curing Conditions on Chloride Penetration -- 2.3 Effect of Test Methods on Chloride Penetration -- 3 Conclusions -- References -- A Compact Review on the Waste-Based Lightweight Concrete: Advancement and Possibilities -- 1 Introduction -- 2 Lightweight Aggregate Concrete (LWAC) -- 3 Structural Bond Behavior of LWC -- 4 State of the Art -- 5 Possibilities -- 6 Conclusions -- References -- Influence of Reinforcement on the Loading Capacity of Geopolymer Concrete Pipe -- 1 Introduction -- 2 FE Modelling of TEB Test -- 3 Material Modelling -- 4 Load-Deflection Behavior of Concrete Pipes -- 5 Effect of Change in Reinforcement Area -- 6 Conclusion -- References -- Creep of Slag Blended Cement Concrete with and Without Activator -- 1 Introduction -- 2 Experiments -- 2.1 Mixture Proportions and Properties -- 2.2 Creep Test Setup -- 3 Creep Model in AS3600:2018 -- 4 Results and Discussion -- 4.1 Total Deformation -- 4.2 Creep Strain Measurement and Model Prediction -- 5 Conclusions -- References -- Partially-Unzipped Carbon Nanotubes as Low-Concentration Amendment for Cement Paste -- 1 Introduction -- 2 Methods -- 2.1 PUCNT Aqueous Suspensions -- 2.2 Cement Paste Specimens -- 2.3 Procedure -- 3 Results and Discussion -- 3.1 Dispersibility in Aqueous Suspension -- 3.2 Compressive Strength -- 4 Conclusions -- References -- Effect of Fine Aggregates and Test Settings on the Self-sensing Response of Cement-Based Composites with Carbon Nanotubes as Conductive Filler.

1 Introduction -- 2 Methods -- 2.1 Materials and Sample Preparation -- 2.2 Self-sensing Test -- 3 Results and Discussion -- 3.1 Materials Characterization -- 3.2 Effect of Fine Aggregate and CNT Content on Electrical and Piezoresistive Properties -- 3.3 Effect of Test Setup on Electrical and Piezoresistive Properties -- 4 Conclusions -- References -- Effect of Carbonation on the Microstructure and Phase Development of High-Slag Binders -- 1 Introduction -- 2 Methods -- 2.1 Raw Materials -- 2.2 Carbonation Test -- 2.3 Characterization of the Mortars -- 3 Results and Discussion -- 4 Conclusions -- References -- A New Dispersion Strategy to Achieve High Performance Graphene-Based Cement Material -- 1 Introduction -- 2 Methods -- 2.1 Materials -- 2.2 Sample Preparation -- 2.3 Experimental Methods -- 3 Results and Discussion -- 3.1 Characterization of GC Material -- 3.2 Mechanical Properties of GC Material -- 3.3 Dispersion Effect -- 4 Conclusions -- References -- Accelerated Mortar Bar Test to Assess the Effect of Alkali Concentration on the Alkali-Silica Reaction -- 1 Introduction -- 2 Methods -- 3 Results and Discussion -- 4 Conclusions -- References -- Development of High-Strength Light-Weight Cementitious Composites with Hollow Glass Microspheres -- 1 Introduction -- 2 Methods -- 2.1 Raw Materials -- 2.2 Mix Proportions -- 2.3 Experimental Methods -- 3 Results and Discussion -- 3.1 Density, Strength and Structural Efficiency -- 3.2 SEM Analysis -- 4 Conclusions -- References -- Co-effects of Graphene Oxide and Silica Fume on the Rheological Properties of Cement Paste -- 1 Introduction -- 2 Methods -- 2.1 Materials -- 2.2 Preparation of GO-Coated SF and Cement Paste -- 2.3 Testing Methods -- 3 Results and Discussion -- 3.1 Evaluation of the Surface Properties of MSF Particles and the MSF@GO -- 3.2 Rheological Properties -- 4 Conclusions -- References.

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