CARBOCRETE

BS Civil TechnologySection CSemester 8th

Group No 3

Naqeeb Ullah Khan Niazi 107Muhammad Adnan 94Syed M Tajdar Hussain 125Haroon Khan Niazi 56M.Tahir 103

LITERATURE REVIEWCarbon fiber is not an absolutely new material; it is successfully applied in such

fields as: aerospace industry, car industry, production of sport equipment, production of working clothes and military , electronic industry, etc. Rather new is the idea of

using carbon fiber in building structures. At the present time methods of strengthening of the structures with fibers are applying for different structures.

In late 1800s, Thomas Edison was the first to use carbon fibers as filaments for early light bulbs

Kukreja (1980) conducted some experiments and

reported that, based on the

results of three methods such as split tensile test, direct tensile test and flexural test, split tensile. Also

increase in tensile strength

and post cracking strength,

toughness were reported.

Researchers like Goash

(1989) studied tensile

strength of FRC and

reported as inclusion of

suitable short fibers

increases the tensile

strength of concrete.

Distribution and orientation of fibers in FRC significantly affects the

properties of FRC. Based on this concept, Paviz (1990) have carried

out some investigation and show the results about

the direction of fiber in

construction.

Mohammed Ezziane, Laurent

Molez, and Damien

Rangeard et at (2011) A study

has been made of the mechanical

behavior of standard

mortars, fiber mortar, subjected

to thermal exposure. The fiber mortars

appear to offer a good

compromise.

TYPES OF CARBON FIBER

BASED ON FINAL HEAT TREATMENT TEMPERATURE,

CARBON FIBERS ARE CLASSIFIED INTO

Type-I, high-heat-treatment carbon fibers (HTT), where final heat treatment

temperature should be above 2000°C and can be associated with high-modulus type fiber

Type-II, intermediate-heat-treatment carbon fibers (IHT), where final heat treatment temperature should be around or above 1500°C and can be

associated with high-strength type fiber.

Type-III, low-heat-treatment carbon fibers, where final heat treatment temperatures not

greater than 1000°C. These are low modulus and low strength materials.

BASED ON FIBER MATERIALS, CARBON FIBERS ARE CLASSIFIED INTO

PAN-based carbon fibers

Pitch-based carbon fibers

(PAN)

PAN FILAMENT

RELATIVELY LOW MODULUS (BETWEEN 200 & 300 GPa)HIGH STRENGTH CARBON FIBERS

WITH OUT STRETCHING :RELATIVELY HIGH MODULUS (BETWEEN 500 & 600 GPa )CARBON FIBERS WITH STRETCHING :CARBON FIBERS WITH IMPROVED STRENGHT

Wet spinning and stretching

Carbonization Heating and stretching at 1000C -2000C in an inert atmosphere for 30 min

Graphitization Heating above 2000C with or without stretching

The Manufacturing Process of Carbon Fibers by (Morgan 2005)Carbon fiber manufacturing from PAN

PITCH

MESOPHASE PITCH

RELATIVELY LOW MODULUS (BETWEEN 200 & 300 GPa)HIGH STRENGTH CARBON FIBERS

WITH OUT STRETCHING :RELATIVELY HIGH MODULUS (BETWEEN 500 & 600 GPa )CARBON FIBERS WITH STRETCHING :CARBON FIBERS WITH IMPROVED STRENGHT

Heat treatment at 300C-500C

CarbonizationHeating and stretching at 1000C -2000C in an inert atmosphere for 30 min

Graphitization Heating above 2000C with or without stretching

PITCH FILAMENTMelt spinning & drawing followed by heat stabilization at 200C-300

The Manufacturing Process of Carbon Fibers by (Morgan 2005)Carbon fiber manufacturing from PITCH

Manufacturing

Challenges

The need for more cost effective

recovery and repair.

Close control required to

ensure consistent quality.

Health and safety issues.

Skin irritation

Breathing irritation.

Methodology

Material

Cement

Sand

Aggregate

Carbon Fiber

Human hairs

Investigate the strengt

h of ordinar

y cement concret

e

Investigate the %age

of material we are going to use in this project

Investigate the Strengt

h of concrete with carbon fiber

reinforcement

Investigate the strengt

h of concret

e + SRMS

No of sample

s we are

going to

made

Testing of Carbon Fiber Reinforcement

Initial and final setting time

Slump test

Water absorption test

Compressive Strength Test

Flexural Strength Test

Uses of Carbon Fiber

Energy: Natural gas storage and transportation, fuel cells.

Automobiles: Currently used just for high performance vehicles, carbon fiber technology is moving into wider use.

Construction: Lightweight pre-cast concrete, earthquake protection, soil erosion barriers

Aircraft: Defense and commercial aircraft.  Unmanned aerial vehicles. Textile machinery