This document explores the bond strength characteristics of glass fiber reinforced polymer (GFRP) rebars in alkali-activated slag concrete mixes, emphasizing the advantages of GFRP as a corrosion-resistant alternative to traditional steel reinforcement. It details the objectives, methodology, and expected contributions to structural engineering, highlighting the significance of bond strength in concrete performance. The research employs the Taguchi method for optimization and outlines various tests conducted on the materials involved.

1. STUDIES ON BOND STRENGTH CHARACTERISTICS OF
GFRP REBARS IN ALKALI ACTIVATED SLAG CONCRETE
MIXES
GUIDE:
Dr. MANJUNATH R
Assistant Professor
Department of Civil Engineering
B.M.S College of Engineering
SUBMITTED BY,
KARTHIK M
MOHITH KOTNADA
MD FAZAL
MOHAN KUMAR H V
(1BM20CV068)
(1BM20CV094)
(1BM20CV087)
(1BM20CV092)

2. CONTENTS
▪ INTRODUCTION
▪ OBJECTIVES
▪ METHODOLOGY
▪ EXPERIMENT RESULTS
▪ WORK PENDING
▪ REFERENCE

3. INTRODUCTION
• Glass Fiber Reinforced Polymer (GFRP) rebars are composite materials used as an alternative to traditional
steel reinforcement in construction. They are made by combining high-strength glass fibers with a polymer
resin, resulting in a corrosion-resistant and lightweight reinforcement option.
• GFRP rebars tensile strength typically ranges from 300 MPa to 1,200 MPa, depending on the specific
composition and manufacturing process.
• Density: Around 1.5 to 2.0 g/cm³, which is significantly lower than the density of steel.
• GFRP rebars are corrosion-resistant, providing a longer service life compared to traditional steel rebars.
• Thermal Conductivity: Low thermal conductivity, usually in the range of 0.2 to 0.3 W/(m·K).

4. ➢ This research delves into the fundamental aspect of the bond strength between GFRP rebars and the alkali-
activated slag concrete, shedding light on the potential advantages and challenges associated with this
innovative combination of materials.
➢ Alkali-activated slag concrete is known for its sustainable properties, as it often involves the activation of
granulated blast furnace slag, a byproduct of the iron and steel industry, through alkali solutions
➢ The findings from this research not only contribute to the knowledge base of structural engineering but also
have practical implications for the construction industry.
➢ The bond strength between reinforcing elements and concrete is a critical parameter that directly influences
the structural performance of a concrete element
INTRODUCTION

5. OBJECTIVES
➢ To evaluate the workability characteristics of Alkali activated slag concrete mix
Evaluation of mechanical properties of alkali activated slag concrete mix.
Evaluate bond strength characteristics, GFRP rebars and in alkali activated slag concrete mix.
Microstructural characteristic of alkali activated slag concrete mix

6. METHODOLOGY

7. TEST ON RECYCLED AGGREGATE

8. TEST FOR RECYCLED COARSE AGGREGATES

9. TEST FOR FINE AGGREGATES

10. CHEMICAL COMPOSITION OF GGBFS
As given by the manufacturer

11. MIX DESIGN

14. INPUT PARAMETERS FOR TAGUCHI METHOD

15. MIX PARAMETERS FOR THE HSAASC MIXES-
CALIBRATION PHASE

16. MIX PARAMETERS FOR THE HSAASC MIXES-
VERIFICATION PHASE

17. QUANTITIES OF MATERIALS

18. SLUMP TEST RESULT

19. SLUMP ANAYALSIS

20. UTM MACHINE TESTING

21. RESULT ANALYSIS

22. FAILURE OF SPCIMEN

24. Taguchi method
➢ The Taguchi method is a statistical optimization technique developed by Genichi Taguchi.
➢ It aims to improve product and process quality by systematically optimizing factors and
levels in experimental designs.
➢ Using orthogonal arrays, it efficiently explores different factor combinations to identify
the most robust performance.
➢ The method employs the Signal-to-Noise Ratio (S/N Ratio) for evaluating and selecting
optimal factor levels.
➢ Widely applied in engineering and manufacturing, it emphasizes creating robust, less
sensitive products and processes with fewer experiments.

27. EXPERIMENT CONDUCTION ON MATERIALS
PHYSICAL PROPERTIES OF MATERIALS
APPROXIMATE DESIGN
FINDING OUT THE WATER/BLENDED RATIO
INSERTION OF GFRP REBARS
TRIAL MIXES(15-1 TO 9CALIBRATION PHASE 10-15
VERIFICATION PHASE)
CUBE CASTING
CURING (3,7,28) DAYS
BOND STRENGTH ANALYSIS(UTM MACHINE )
MICRO STRUCTURE ANALYSIS
RESULT

28. WORK PENDING

29. REFERENCES
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31. THANK YOU