Thesis PPT.pptxqefwefqewfwefqefqefqefqefqefqe

qerwerfrqefqe

1. Smart Concrete STATEMENT l

2. STATEMENT l GROUP MEMBERS Aneeq Butt Usama Javed Muhammad Shahid Azhar Sharif M. Noorullah Palijo Engr. Sumaira Ismail Engr. Wishah Qaiser

3. 1

4. 1 Introduction • The research aims to provide a comprehensive understanding of the use of high-cost synthetic fiber in the construction of robust concrete structures. • The study will guide designers, engineers, site engineers, material suppliers, and academicians in addressing durability issues in structural members. • The research will focus on implementing innovative modifications and enhancements in existing techniques, methodologies, and approaches to elevate the design of concrete structures to sustainability, eco-friendliness, and environmental consciousness. • The research will conduct extensive laboratory work, experimentation, and tests on concrete mixes fortified with GFRP and CCFRP. • The study will address critical issues related to the construction industry, including cost-effectiveness, safety, environmental impact, and sustainability. • The research will conclude with a logical conclusion emphasizing the importance of GFRP as a sustainable and eco-friendly alternative for concrete structures. • The study promises to play a transformative role in the field of construction, providing valuable information and insights from a sustainability and durability standpoint.

5. 2

6. Problem Statement 2 • Study focuses on comparing sustainable concrete practices using waste materials as cement composite replacements and glass and carbon fibers as reinforcement materials. • Tension and flexural strength will be tested to compare smart concrete with ordinary concrete. • Smart concrete is reinforced with materials like glass and carbon fibers for better strength and durability. • Concrete production requires significant energy and emits CO2, a major environmental polluter. • Sustainable concrete can be produced by reducing cement composite and replacing it with waste materials for better strength and durability. • Waste materials like fly ash, blast furnace slag, and recycled aggregate are used to replace cement at optimal levels. • Smart concrete, a sustainable concrete development, provides more advantages in terms of strength and durability.

7. 3

8. Aims and Objectives Concrete Sustainability Measures • Replacing cement with glass and carbon fibers. • Embedding sensors for real-time monitoring of concrete's health. 3

9. 4

10. Scope Concrete Replacement Strategy • Use of glass fiber and carbon fiber instead of cement. • Replacement rate: 0.2% to 0.4%. • Testing of concrete's strength and sensor functionality compared to traditional concrete. 4

11. 5

12. Methodology • Experimentation with fiber combinations for optimal strength and sensor compatibility. • Fabrication of concrete test specimens with chosen fiber combination and embedded sensors. • Flexural and compressive strength testing to compare performance to traditional concrete. • Evaluation of sensor functionality and data collection. • Analysis of data to understand fiber reinforcement and sensor effectiveness. • Findings to assess viability and recommend future research directions. 5

13. 6

14. Literature Review • Smart concrete is a sustainable alternative to conventional methods, aiming to change concrete trends. • Despite its potential, the practicality of this technology is still uncertain. • Despite its high cost, there is room for improvement, particularly in lowering its cost and making it comparable to conventional methods. • The construction industry is rapidly growing, with concrete being the main building material. • Smart concrete, a new concept, can conduct electricity or monitor its well-being, enhancing its durability and eco-friendliness. 6

15. 7

16. Background • Smart concrete can repair itself by increasing the amount of unhydrated cement or using expansive agents to avoid damage from bond breaking and deformation. • Self-repair is the pinnacle condition of smart concrete, mimicking the human body. • Slime mold and bacterial concrete are examples of smart concrete, designed to work from a stimulus, returning the concrete to its original condition. • Fiber-reinforced and self-consolidating smart concrete is another area of research, focusing on how fibers can be used to create real smart concrete. • Concrete durability is crucial for the serviceability of structures, safety, and maintenance costs. • "Smart concrete" is a material with sensors to monitor the condition of concrete structures. • The paper investigates using fibers (glass and carbon) as reinforcement on smart concrete. 7

17. 8

18. Smart Concrete • Smart concrete is a multifunctional material with self-monitoring capabilities that can adapt to changes in mechanical or environmental conditions. • It can identify potential problems in reinforced concrete structures and can be used for replacement in tunnels, undersea pipelines, and storage tanks. • It can monitor structures after fire, seismic activity, or exposure to high-temperature materials. • Smart concrete can provide specific case histories to eliminate speculation on required repair, reducing time and money spent on repairs. • It can automatically repair and mitigate damages, reducing the need for maintenance and repair. • Smart materials are intelligent materials that can be significantly changed by external stimuli, such as stress, temperature, moisture, pH, and electric or magnetic field. • They are used in sensors, actuators, artificial muscles, soft robotics, and shape memory alloys. • Smart concrete can sense and respond to environmental stimuli in a predictable and useful manner, with some stimuli requiring autonomous responses. 8

19. 9

20. Sustainable Practices in Construction • Green materials are environmentally responsible, considering impacts throughout the product life cycle. • These materials are in early stages of development, with market demand determining their widespread use. • Sustainability in the construction industry is crucial, with structural materials subject to environmental assessments from production to construction. • Material selection should minimize environmental harm and waste from extraction. • Energy considerations are crucial, considering the production process and embodied energy a material emits. • The production phase of a product can contribute to global warming and public health. • Building design and construction prioritize occupant health and comfort. • A tradeoff analysis should be made during material selection, comparing environmental impact to functional and social costs. 9

21. 10

22. Glass Fibre Concrete (GFC) • Composed of a pliable binder like Portland cement and water. • Originated from Egypt and advanced by the Romans. • Hard solid material made by mixing cementing material with aggregate, adding water, and hardening by hydration. • Glass fiber-reinforced concrete enhances strength, modulus, and impact resistance. • Unlike glass fiber, which exhibits brittle failure under tension, glass fiber has improved tensile characteristics. • Alkali-resistant glass (ARG) fiber has been created to improve tensile characteristics. 10

23. 11

24. Carbon Fibre Concrete (CFC) • Carbon fibre has been used as a structural reinforcement since the 1960s, replacing metals like steel and aluminium . • Successful applications have taken advantage of the anisotropic nature of carbon fibre composites, focusing on designing components with high tensile strength and stiffness. • The high cost of carbon fibre is justified by significant improvements in structural performance. • The widespread use of Pan precursor-based fibres has led to a decrease in fibre costs and increased applications of inexpensive pitch-based fibres . • Carbon fibre is increasingly used as a reinforcement for concrete, a material with poor mechanical behavior and traditionally lacking a strong reinforcing base. • Carbon fibre reinforced concrete (CFRC) is a modern trending concrete type, composed of a hydraulic cement-based matrix with a three-dimensional reinforcing framework of carbon fibre . 11

25. 12

26. Methodology Sample Preparation Methodology • Use of skilled workmen for large-scale structures and control/repair of concrete structures. • Trial mixes evaluated for workability and suitability for various applications. • Batches of concrete prepared in a pan type of mixer. • Glass fiber-reinforced concrete mixed in layers to avoid porosity. • Sprayed roving for large structures was also used. • Carbon fiber reinforced concrete prepared with workability suitable for compaction in a hydraulic press. • Excess water in the mix was absorbed by keeping specimens on porous tiles. 12

27. 13

28. Methodology Materials • Fiber supplied by Huesker Synthetic GmbH, Germany. • Glass and carbon roving had a tex of 2400 and 3000 respectively. • Ordinary Portland Cement (OPC) of 53 grade sourced from Ultratech cement. • Mix proportion defined by Indian Standard IS: 12269-1987. • Suitable roving sizing for cement-based matrix ensured perfect adhesion. • Concrete produced had a good finish and bonding of fibers. • All specimens de-molded after 24 hours and cured in water at room temperature. • A curing period of 28 days is maintained for all specimens. 13

29. 14

30. Methodology Smart Concrete Testing Method • Preparation of cubes using glass and carbon fiber concrete. • Cubes of 150x150x150mm size were prepared. • Concrete mix was mixed by hand, adding glass fibers at 1% by weight of cement and carbon fibers at 2%. • Concrete was poured into molds and compacted by rodding. • Molds were covered by polythene sheet and kept for a day. • Cubes were tested at varying conditions after each curing period. • A research design was used to guide the project. • Experimental groups tested for significant changes in tensile and compressive performance. • A control group provided a benchmark for regular concrete performance. 14

31. Designed by One Skill u y o Thank