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Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete

Rationale Research Objectives Thesis Organisation References Literature Review Mechanical Reprocessing of Polypropylene Waste Degradation and Crystallisation Behaviours of Reprocessing PP Waste Degradation Behaviour Crystallisation Behaviour and Mechanical Properties Melt Blending Filler Reinforcement Mechanochemistry Use of Macro Plastic Fibres in Concrete Preparation and Properties of Macro Plastic Fibres Macro Plastic Fibre Reinforced Concrete Fresh Concrete Properties Slump Hardened Concrete Properties Compressive Strength Splitting Tensile Strength Flexural Strength Post-cracking Performance Drying Shrinkage Pull-Out Behaviour of Macro Plastic Fibres Degradation of Plastic Fibres in Concrete Cost and Environmental Benefits of Using Macro Plastic Fibres Applications of Macro Plastic Fibre Reinforced Concrete Characterisation of Toughness and Post-cracking Behaviour of Fibre Reinforced Concrete Four-Point Flexural Tests on the Unnotched Beams ASTM C1018 ASTM C1399 ASTM C1609 Three-Point Flexural Tests on the Notched Beams Flexural Tests on the Round Panel Life Cycle Assessment Conclusions References Production and Characterisation of the Physical and Mechanical Properties of Recycled PP Fibers Fibre Production and Measurement Raw Materials for Fibre Production Preparation of PP Fibres Tensile Strength of PP Fibres Fourier Transform Infrared Spectroscopy Differential Scanning Calorimeter Wide-Angle X-ray Scattering Mechanical Properties of PP Fibres Molecular Orientation by FTIR Crystal Structure and Crystallinity by DSC Crystallinity by WAXS Conclusions References Comparative Evaluation of 100% Recycled and Virgin PP Fibre Reinforced Concretes Alkali Resistance of the 100% Recycled and Virgin PP Fibres Concrete Mix Design and Experimental Program Concrete Mix Design Compressive Strength of Concrete Residual Flexural Tensile Strength with CMOD Round Determinate Panel Test Mechanical Properties of the 100% Recycled and Virgin PP Fibres Compressive Strength of Concrete Residual Flexural Tensile Strength with CMOD Flexural Strength and Toughness from RDPT Conclusions References Post-cracking Performance of Concrete Reinforced by Various Newly Developed Recycled PP Fibres Compressive Strength of Concrete Residual Flexural Tensile Strength with CMOD Flexural Strength and Toughness from Round Determinate Panel Tests Conclusions References Environmental Benefits of Using Recycled PP Fibre Through a Life Cycle Assessment Life Cycle Assessment Process Functional Unit and Scenario Formulations System Boundaries Steel Reinforcing Mesh Virgin PP Fibre Industrial Recycled PP Fibre Domestic Recycled PP Fibre Life Cycle Inventory Life Cycle Impact Assessment Uncertainty Analysis Results Discussion Conclusions References Applications of 100% Recycled PP Fibre Reinforced Concretes Concrete Footpaths Precast Concrete Drainage Pits Materials and Specimens Pit Test Setup Results and Discussion Conclusions References Conclusions Recommendations

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Macro Plastic Fibre Reinforced Concrete
Fresh Concrete Properties Slump Workability of fresh concrete can be determined through a slump test (AS1012.3.9 1993). Table 2.3 shows slump test results of macro plastic fibre reinforced concrete. The results indicate addition of macro plastic fibres decreases slump, thus decreasing workability...
(Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete)
Applications of Macro Plastic Fibre Reinforced Concrete
Reinforcing steel is expensive and its placement in concrete is labour and time intensive, often requiring placement in difficult and dangerous locations. Moreover, steel is highly corrosive in nature, which commonly deteriorates concrete. Therefore, macro plastic fibres are increasingly used in concrete...
(Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete)
Comparative Evaluation of 100% Recycled and Virgin PP Fibre Reinforced Concretes
Cement matrix is highly alkaline with pH value of around 13, thus durability of the plastic fibre in concrete alkaline environment is an important factor that needs proper consideration. This chapter assessed alkali resistance of 100% recycled PP fibre in four different alkaline solutions with pH value...
(Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete)
Applications of 100% Recycled PP Fibre Reinforced Concretes
To showcase the industrial application of the 100% recycled PP fibre produced in this research, the fibre performance was tested in various real-life applications which included concrete footpaths and precast concrete pits. This Chapter describes the complete process of using recycled PP fibre to replace...
(Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete)
Factors Influencing Creep of Cracked Fibre Reinforced Concrete: What We Think We Know & What We Do Not Know
Ravindra Gettu, Raul Zerbino and Sujatha Jose Abstract The significance of the creep behaviour of fibre reinforced concrete (FRC) in the cracked state is a matter of debate. As FRC in service could be in the cracked state, the serviceability and failure will depend on the stability of the...
(Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016)
sile Creep of Cracked Steel Fibre Reinforced Concrete: Mechanisms on the Single Fibre and at the Macro Level
W.P. Boshoff and P.D. Nieuwoudt Abstract This paper reports on tests done to investigate the mechanisms causing the increased tensile creep of cracked fibre reinforced concrete (FRC) members when a sustained load is applied. It is important to understand the mechanisms as this will pave...
(Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016)
Creep Behaviour of Cracked High Performance Fibre Reinforced Concrete Beams Under Flexural Load
Eduardo Galeote, Ana Blanco, Albert de la Fuente and Sergio H.P. Cavalaro Abstract The investigation on flexural creep of high performance fibre reinforced concrete (HPFRC) is still scarce. Even though the presence of fibres in concrete helps to control the deformations, these may increase...
(Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016)
Effect of Beam Width on the Creep Behaviour of Cracked Fibre Reinforced Concrete
Raul L. Zerbino, Graciela M. Giaccio, Diego H. Monetti and Maria C. Torrijos Abstract Many efforts have been made to develop a creep testing procedure for fibre concrete in cracked state. Among several proposals the use of a bending test seems a promissory alternative. The “creep testing...
(Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016)
Macro-Synthetic Fibre Reinforced Concrete: Creep and Creep Mechanisms
A.J. Babafemi and W.P. Boshoff Abstract The creep of cracked macro-synthetic fibre reinforced concrete has been investigated in uniaxial tension at five stress levels (30, 40, 50, 60 and 70 %) of the residual uniaxial tensile strength under controlled temperature and relative humidity of...
(Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete: Proceedings of the International RILEM Workshop FRC-CREEP 2016)
Use of Macro Plastic Fibres in Concrete
Concrete is very strong in compression, however, it has a very low tensile strength. To improve its tensile strength, reinforcing steel is often used in the concrete. Apart from traditional steel mesh and bars, various fibres, such as steel fibre, glass fibre, natural fibre and synthetic fibre, have...
(Development of Recycled Polypropylene Plastic Fibres to Reinforce Concrete)