Properties of mixes of sugar cane fibre waste with cement ...

Properties of mixes of sugar cane fibre waste with cement binding

Dr Rajesh JeetahT. Dusoruth, A.Seeboo & P. Khedun

Cambridge SS Conference 13 April 2005

Outline

Introduction & aim of workProperties of Sugar Cane Fibres(SCF)Literature ReviewExpt Work/ResultsConclusions and suggestions for future work

Introduction

Sugar IndustrySugar Cane fibresAlternative uses of SCF?* Textile* Geotextile, geotechnical material* Fibre reinforced composites* SCF & SS

Sugar Cane

Sugar cane field – pre-harvest

Mechanical properties of fibresTensile strength(N/mm2) Related ProblemsAsbestos 3600Glass 1000-3500 Alkali Resistance, BrittlenessSteel 2400-3800 -Carbon 2000-3000 Cement adhesionKevlar-29 2380-3100 PP 200-550PA-66 700-1000PET 800-1300Rayon 450-1100PAN 850Jute 187-540 Alkali Resistance Flax 250-1000Cotton 350

SCF 290 ?

Why consider Sugar cane fibres?

Annual Production of Crushed SCF Fibres

200 million tonnes

……………..Renewable.

Collier et al 1992

SCF

SCF

Survey of Cellulosic based material research

ReinforcementGeotextileSolidification/Stabilisation (S/S)

Aggarwal 1995

Ramirez-Coreti 1992

Summary

1. Flexural strength of concrete does increase with an increase in fibre content up to an optimal level

2. SCF at optimal level outperforms control samples over a period of 6 years

Solidification/stabilisation

Janusa et al 2002

Effect of fibre content on UCS of concrete

51015202530

0 2 4 6 8 10

% fiber

UC

S (N

/mm

2)

Mix design:-OPC:Sand:Gravel = 1:2.25:2.65 with water/cement ratio of 0.54

Impact Resistance

0

1

2

3

4

5

6

7

8

0 1 2 3 4 5 6% Bagasse

No.

of b

low

s

Water curing

Air curing

Conclusions1. Up to an optimal value SCF does

contribute towards an increase in strength of concrete

2. SCF may be used to produce Light weight concrete with improved impact resistance

3. SCF can be used in S/S of hazardous waste

Ongoing work

Studies on effect of cellulose on S/SEffect of delignified fibres on concrete strengthS/S effect on other hazardous wasteEffect of other textile waste on S/S

Thank you

Notes:

1. Cellulose is a polysaccharide with the following formula: (C6H10O5)n

2. Bagasse has a polymer chain of 2000-3000 units

3. Kraft process: Sodium sulphide and sodium hydroxide are active ingredients used to attack lignin

0

20

40

60

80

100

120

0 1 2 3 4 5 6

% Bagasse

Slump value, mm

Vebe time, s