STEEL AND POLYPROPYLENE FIBER AS A MECHANISM IN CONCRETE PROPERTIES IMPROVEMENT
BY :
SOFFIAN NOOR BIN MAT SALIAH NOORSUHADA BINTI MD. NOR
FEBRUARY 2009
UNrVERSITI TEKNOLOGI M A R A Ins ti tut Penyelidikan, Pembangunan dan Fengkomersilan (IRDC)
Institute, of Research, Development and Commercialisation (IRDC)
(Stbclum ini dikmdi sebagai PttyelUlihm dm Prrvndmpn)
40450 Shah Alam, Malaysia
Website; http / / : www.irdc.uitm.edu.my
Tarikh 24 Jun 2008
Surat Kami : 600-1RDC/ST/.5/3/Rst (19/2008)
En. Soffian Noor Bin Mat Saliah Ketua Projek
UiTM Pulau Pinang Jalan Permatang Pauh 13500 Permatang Pauh PULAU PINANG
Pn. Noorsuhada Binti Md. Nor Ahli Projek
UiTM Pulau Pinang Jalan Permatang Pauh 13600 Permatang Pauh PULAU PINANG
Tuan/Puan,
DAFTAR PROJEK PENYELIDIKAN : STEEL AND POLYPROPYLENE FIBRE AS A MECHANISM IN CONCRETE PROPERTIES IMPROVEMENT
Dengan segala hormatnya perkara di atas adalah dirujuk.
Sukacita dimaklumkan bahawa pihak IRDC meluluskan permohonan tuan/puan untuk mendaftarkan projek penyelidikan tuan/puan bertajuk seperti di atas yang sedang dijalankan dengan menggunakan pemblayaan sendfri.
Oleh itu, pihak kami berharap agar tuan/puan dapat menghantar dua (2) naskah laporan akhir mengikut format yang telah ditetapkan setelah menamatkan projek penyelidikan tersebut.
Seklan, harap maklum. Terima kasih Yang benar,
PROF. DR. AZNI ZAIN AHMED P^tplong Naib Canselor (Penyelidikan) s.k.l 1. Pengarah Kampus
UiTM Cawangan Pulau Pinang 2. Prof. Madya Dr Mohd Hanaflah Abidin
Ketua Penyelidikan (Sains & Teknologi)
FTNAa
Canselor (Penyelidikan) kan (Sains SdhaI dan Pengumsan) kan (Sains dan Teknc?|<?gi) gan (Kewangan)
! 03-55442094/5 Ketua INFOREC : 03-5544 3092 Ptgnwai Sains ; 03-55442098
: 03*3544 2097' Ketua Perundlng&n : 03-55442100 Pejabat Am : 03-5544 2093/2101 /2057 a z'-rar-eta.
; 03-5544 2091 Ketua Pcngtomcrsilan : 03-5544 2750 Fax : 03-55442096/2767 7
; 03-5544 2753 Pttvolong PendaJftar ; 03-5544 2D90 U nit Kewangan Zon 17 ; 03-5544 3440 La^J TOTAL P. 01
ACKNOWLEDGEMENT
One of the most pleasant part of the writing a thesis is an opportunity to thank to those who have contributed to it, the list of expression of thanks, no matter how extensive, is always inadequate. The acknowledgements are not exception.
The authors wish to express their gratitude and appreciation to Dr Megat Azmi Megat Johari for his contributing advice, guidance, assistance, constructive criticism and interest shown without those this research might not have been possible to be completed.
The authors are grateful for the valuable help and advice from the staffs of Civil Engineering Laboratory, Faculty of Civil Engineering, UiTM Pulau Pinang, En Salleh Abdullah and En. Roseffandy Ramlan for their help with the experimental programme and did superlative job as laboratory assistance. They were constant source of information and advice.
Lastly, the authors thank to their son for his corresponding and understanding in completing this research.
ABSTRACT
The effects o f steel and polypropylene fibers on properties of concrete have been investigated. Concrete mixes with a characteristic strength of 30 MPa at 28 days were prepared. Steel fiber was used at dosage levels of 15, 25 and 45 kg/m3, whereas polypropylene fiber was included at dosage levels of 4.5, 6 and 9 kg/m3. It was found that the inclusion of both types o f fibers reduce the workability of concrete with greater reduction at higher fiber dosage. Compressive strength was not significantly affected by the inclusion of fibers, but the inclusion o f fibers seemed to reduce the tendency of concrete to undergo brittle failure under compressive load. Both types of fibers significantly enhance the flexural strength o f concrete with steel fibers showing greater effect. Concrete containing fibers exhibited greater toughness and residual strength factor. Steel and polypropylene fibers did not have significant effects on splitting tensile strength and interfacial bond strength between steel and concrete. However, observation on failure pattern showed that the inclusion of both types of fibers prevented the concrete from breaking and splitting as well as reduced the tendency o f steel reinforcement to undergo debonding.
xv
TABLE OF CONTENTS
CONTENT PAGE
Acknowledgement i
Table of Contents ii
List of Tables vii
List of Figures ix
List of Abbreviations and Symbols xii
Abstract xiv
CHAPTER 1: INTRODUCTION 1
1.1 Introduction 1
1.2 Problem Statements 2
1.3 Objectives 4
1.4 Scope o f Study 4
CHAPTER 2: LITERATURE REVIEW 6
2.1 Introduction 6
2.2 Application of Fibers in Construction 7
2.3 Effects of Steel Fiber in Construction Performance 12
u
