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THE EFFECT OF ROAD GEOMETRIC (GRADIENT AND CURVE) ON FRICTION
VALUE FOR INTERLOCKING CONCRETE PAVEMENT
Henry Sidie Anak Sulang
Bachelor of Engineering with Honours
(Civil Engineering)
2005
UNIVERSITI MALAYSIA SARAWAK
R13a
BORANG PENGESAHAN STATUS TESIS
Judul: THE EFFECT OF ROAD GEOMETRIC (GRADIENT AND CURVE) ON FRICTION
VALUE FOR INTERLOCKING CONCRETE PAVEMENT
SESI PENGAJIAN: 2001 - 2005
Saya HENRY SIDIE ANAK SULANG
(HURUF BESAR)
mengaku membenarkan tesis * ini disimpan di Pusat Khidmat Maklumat Akademik, Universiti Malaysia Sarawak
dengan syarat-syarat kegunaan seperti berikut:
1. Tesis adalah hakmilik Universiti Malaysia Sarawak.
2. Pusat Khidmat Maklumat Akademik, Universiti Malaysia Sarawak dibenarkan membuat salinan untuk
tujuan pengajian sahaja.
3. Membuat pendigitan untuk membangunkan Pangkalan Data Kandungan Tempatan.
4. Pusat Khidmat Maklumat Akademik, Universiti Malaysia Sarawak dibenarkan membuat salinan tesis ini
sebagai bahan pertukaran antara institusi pengajian tinggi.
5. ** Sila tandakan ( ) di kotak yang berkenaan
SULIT (Mengandungi maklumat yang berdarjah keselamatan atau kepentingan
Malaysia seperti yang termaktub di dalam AKTA RAHSIA RASMI 1972).
TERHAD (Mengandungi maklumat TERHAD yang telah ditentukan oleh organisasi/
badan di mana penyelidikan dijalankan).
TIDAK TERHAD
Disahkan oleh
(TANDATANGAN PENULIS) (TANDATANGAN PENYELIA)
Alamat tetap: 7E, Jalan Apollo, Off Jalan
Deshon, 96000 Sibu, Sararawak IR. RESDIANSYAH MANSYUR
( Nama Penyelia )
Tarikh: 31 MAC 2005 Tarikh: 31 MAC 2005
CATATAN * Tesis dimaksudkan sebagai tesis bagi Ijazah Doktor Falsafah, Sarjana dan Sarjana Muda.
** Jika tesis ini SULIT atau TERHAD, sila lampirkan surat daripada pihak berkuasa/organisasi
berkenaan dengan menyatakan sekali sebab dan tempoh tesis ini perlu dikelaskan sebagai
SULIT dan TERHAD.
The following Final Year Project Report:
Title : The effect of Road Geometric (Gradient and Curve) on Friction Value
For Interlocking Concrete Pavement
Name : Henry Sidie anak Sulang
Matric No. : 6571
has been read and approved by:
_____________________________ 31 MAC 2005
IR. RESDIANSYAH MANSYUR Date
Supervisor
THE EFFECT OF ROAD GEOMETRIC (GRADIENT AND CURVE) ON
FRICTION VALUE FOR INTERLOCKING CONCRETE PAVEMENT
HENRY SIDIE ANAK SULANG
This project is submitted in partial fulfillment of the requirement for the degree of
Bachelor of Engineering with Honours
(Civil Engineering)
Faculty of Engineering
UNIVERSITY MALAYSIA SARAWAK
2005
ii
To my beloved parent, near relative brothers and sister, friends and special for
someone in my heart.
iii
ACKNOWLEDGEMENT
Behind the development of this project, I would like to express my heartfelt gratitude
to my supervisor, Ir. Resdiansyah Mansyur for the invaluable guidance and kindly
support comments and advices throughout my final year project.
Word of appreciation is also due to Mr. Mohd Hafiz bin Mafadi and Mr. Haji Affandi
bin Othman for the kind assistance offered in the period of my final year project
carried out.
I would like to convey my warmest and thanks to my beloved family for me a
financial supports and spiritual throughout the completion of this project. To all my
friends and anyone who has in one way or another thank you very much for
contributed towards the improvement and success of this final year project.
iv
ABSTRACT
In general, the friction of interlocking concrete pavement is relatively high for all
condition either wet or dry pavement. However, certain condition with a gradient and
sharp curve involved, it could be dangerous in wet condition and might be given
lower value of friction. This project was studied the effect of road geometric
(gradient and curve) on friction value for interlocking concrete pavement at Jalan
Reservoir Kuching and Jalan Dewan Bandaraya Kuching Utara (DBKU). The
objectives of this project are to measure the loss of friction at interlocking concrete
pavement and to evaluate the performance and their effect on vertical curve
(gradient) and horizontal curve situation. This project was conducted by using
“British Pendulum Tester”. Analysis data from friction test was then used to
determine friction factor and skid number. In order to get the friction value, five spot
points along the road site for upgrade at Jalan Reservoir Kuching and four spot points
for upgrade and downgrade were chosen at Jalan Dewan Bandaraya Kuching Utara
(DBKU). Firstly, the result shown that the average of friction value at Jalan Reservoir
Kuching was 46.6 and at Jalan Dewan Bandaraya Kuching Utara (DBKU) were 46.5
and 46.7 for upgrade and downgrade respectively, which is satisfactory in favorable
circumstances as the data observation of FV was above 45 (TRL). Secondly, the
friction factors values (FFV) were between ranges 0.2 to 0.39 at both locations, those
values indicated the pavement surface is poor to fair (BS-5395). Lastly, the Skid
Numbers (SN) for both locations was 31.2 and 31.0 and 31.3 respectively.
Comparing to comment by Jayawickrama et al., 1996, the skid number indicated that
monitor pavement frequently. As shown by the regression model generated, all the
data from experimental concluded that friction value at interlocking concrete
pavement increases with gradient on upgrades while on down grade concluded to the
contrary.
v
ABSTRAK
Secara umumnya, jalan berturapkan konkrit dikaitkan dengan tahap geseran yang
tinggi dalam semua keadaan iaitu sama ada basah ataupun kering. Walau
bagaimanapun, sesetengah keadaan yang melibatkan kecerunan dan selekoh yang
tajam akan menjadi bahaya semasa keadaan basah dan kemungkinan mempunyai
nilai geseran yang rendah. Projek ini merupakan satu kajian terhadap kesan reka
bentuk jalan (kecerunan dan selekoh) terhadap nilai gesaran untuk jalan berturapkan
konkrit di Jalan Reservoir Kuching dan di Jalan Dewan Bandaraya Kuching Utara
(DBKU). Matlamat projek projek ini adalah untuk mengira kehilangan geseran di
jalan berturapkan konkrit dan menilai perlaksanaan serta kesannya terhadap selekoh
(kecerunan) yang menegak dan juga selekoh di tempat mendaftar. Projek ini
dijalankan menggunakan “British Pendulum Tester”. Data yang dianalisis daripada
nilai geseran kemudiannya digunakan untuk menentukan faktor gesran dan angka
kegelinciran. Untuk mendapatkan nilai geseran, lima lokasi dipilih sepanjang Jalan
menaik di Jalan Reservoir Kuching dan empat lokasi dipilih sepanjang Jalan menaik
dan menurun telah dipilih di Jalan Dewan Bandaraya Kuching Utara (DBKU).
Pertama, keputusan menunjukkan purata nilai geseran di Jalan Reservoir Kuching
ialah 46.6 dan di Jalan Dewan Bandaraya Kuching Utara (DBKU) adalah 46.5 dan
46.7 untuk jalan menaik dan menurun, dimana ia adalah dalam keadaan yang
memuaskan apabila nilai FV yang diperhatikan ialah melebihi 45 (TRL). Kemudian,
nilai faktor geseran (FFV) adalah diantara linkungan 0.2 ke 0.39 di kedua-dua lokasi.,
dimana nilai tersebut menunjukkan permukaan Jalan adalah kurang baik ke serdahana
(BS-5395). Akhirnya, angkan kegelinciran (SN) untuk kedua-dua lokasi ialah 31.2
dan 31.3. Jika dibandingkan dengan ulasan oleh Jayawickrama et al., 1996, angka
kegelinciran tersebut menunjukkan jalan yang harus diperbaiki dengan kerap. Seperti
yang ditunjukkan melalui model regresi, semua data daripada eksperimen dapat
disimpulkan iaitu nilai geseran di jalan berturapkan konkrit meningkat dengan
kecerunan semasa menaik sementara semasa menurun ia dirumuskan sebaliknya.
vi
LIST OF CONTENTS
CONTENTS Page
APPROVAL LETTER
APPROVAL SHEET
TITLE PAGE
DEDICATION SHEET ii
ACKNOWLEDGEMENTS iii
ABSTRACT iv
ABSTRAK v
LIST OF CONTENTS vi
LIST OF TABLES xii
LIST OF FIGURES xiv
LIST OF EQUATIONS xvii
LIST OF SYMBOLS xviii
vii
Chapter 1 INTRODUCTION
1.1 Background 1
1.2 Road Pavement 2
1.3 Skid Resistance 3
1.4 Measuring Pavement Skid Resistance 4
1.5 Objective 5
1.6 Scope and Limitation 6
Chapter 2 LIETRATURE REVIEW
2.1 Introduction 7
2.2 Pavement 7
2.3 Concrete Pavement Layers and Component 10
2.4 Concrete Block Pavement 11
2.5 Vertical Alignment 13
2.5.1 Grade 14
2.5.1.1 Ascending Grades 14
2.5.1.2 Descending Grades 15
2.6 Horizontal Alignment 17
2.6.1 Type of Curves 17
viii
2.7 Skid Resistance 19
2.7.1 Parameter Affecting on Friction 20
2.7.2 Factor Affecting Skid Resistance of
Concrete Pavement 24
2.7.3 Measurement Pavement Skid Resistance 29
2.7.4 Skid Resistance for Interlocking Concrete
Pavement 34
2.7.4.1 Fact Comparison for Skid
Resistance Number 34
2.7.4.2 Skid Resistance Requirement
For Concrete Pavers 38
2.7.4.3 Stopping Distance on Concrete
Pavers 39
Chapter 3 MEASUREMENTS METHODOLOGY
3.1 Introduction 41
3.2 Skid Resistance Measurement Devices 42
3.3 Field Procedures 44
ix
Chapter 4 DATA AND ANALYSIS
4.1 Introduction 49
4.2 Data Presentation 51
4.2.1 Data of Jalan Reservoir Kuching 51
4.2.2 Data of Dewan Bandaraya Kuching Utara 52
(DBKU)
4.3 Data Analysis 55
4.3.1 Data Analysis at Jalan Reservoir Kuching 55
4.3.1.1 Data analysis for upgrade (down to up) 55
4.3.1.2 Data analysis for upgrade (up to down) 55
4.3.1.3 Data analysis for Total Average SRV
for upgrade 57
4.3.1.4 Data analysis for Grade and Total Average
Friction Value (FV) 57
4.3.2 Data Analysis at Dewan Bandaraya
Kuching Utara (upgrade) 58
4.3.2.1 Data analysis for upgrade (down to up) 58
4.3.2.2 Data analysis for upgrade (up to down) 59
4.3.2.3 Data analysis for Total Average (upgrade) 60
4.3.2.4 Data analysis for Grade and Total Average
FV for upgrade 60
x
4.4.3 Data Analysis at Dewan Bandaraya
Kuching Utara (downgrade) 62
4.3.2.1 Data analysis for downgrade (down to up) 62
4.3.2.2 Data analysis for downgrade (up to down) 62
4.3.2.3 Data analysis for Total Average (upgrade) 63
4.3.2.4 Data analysis for Grade and Total Average
FV for upgrade 63
Chapter 5 DISCUSSIONS
5.1 Introduction 65
5.2 Friction Value at Jalan Reservoir 66
5.3 Friction Value at Jalan
Dewan Bandaraya Kuching Utara (DBKU) 66
5.4 Friction Value Compare to Standard 67
5.5 Overall Discussion 71
xi
Chapter 6 CONCLUSIONS AND SUGGESSTIONS 72
REFERENCES 75
APPENDIX
A Step by step to conduct friction value at
Jalan Reservoir Kuching 77
B Step by step to conduct leveling at
Jalan Reservoir Kuching 79
C Step by step to conduct friction value at
Jalan Dewan Bandaraya Kuching Utara (upgrade) 81
D Step by step to conduct friction value at
Jalan Dewan Bandaraya Kuching Utara (downgrade) 82
E Cross Section at Jalan Reservoir 85
xii
LIST OF TABLES
Table Page
2.1 Recommended Grades 14
2.2 Previously Published Skid and Friction Limits 28
2.3 Typical Skid Numbers 30
2.4 British Pendulum Number 35
2.5 Sideways Force Coefficient Routine Investigation
Machine (SCRIM) 36
2.6 Average Skid Number (SN) Value for Interlocking
Concrete Pavement Sections 37
2.7 Recommended Minimum Skid Number for
Main Rural Highways 39
2.8 Stopping Distance in meter on Asphalt and
Concrete Pavers 40
3.1 Spot Location at Jalan Reservoir Kuching 46
3.2 Spot Location at Jalan Dewan Bandaraya
Kuching Utara (DBKU) for upgrade 46
3.3 Spot Location at Jalan Dewan Bandaraya
Kuching Utara (DBKU) for downgrade 46
4.1 Friction Value (FV) at Jalan Reservoir Kuching 51
4.2 Friction Value (FV) for upgrade at Jalan
Dewan Bandaraya Kuching Utara (DBKU) 53
4.3 Friction Value (FV) for downgrade at Jalan
Dewan Bandaraya Kuching Utara (DBKU) 54
xiii
5.1 Total Average Friction Value (FV) 68
5.2 Friction Factor Value 68
5.3 The Calculation and Result of Skid Number (SN) 70
xiv
LIST OF FIGURES
Figures Pages
2.1 Typical Flexible and Rigid Pavement Layers 9
2.2 Typical Load Distribution for Flexible and Rigid
Pavement Layers 9
2.3 Component of Concrete Pavements 11
2.4 Principal Elements of a Concrete Block Pavement 12
2.5 Typical Breakdown of Paver Application 13
2.6 Critical Length 15
2.7 Common Runaway Vehicle Ramp 16
2.8 Layout Simple Curves 17
2.9 Layout of a Compound Curve 18
2.10 Geometry of Reserve Curve with Parallel Tangent 19
2.11 Comparison between Microtexture and Macrotexture 21
2.12 Portable British Pendulum Tester 31
2.13 Sideways Force Coefficient Routine Investigation
Machine (SCRIM) 33
2.14 Typical of Herringbone Pattern 37
3.1 Sideways Force Coefficient Routine Investigation
Machine (SCRIM) 43
3.2 Pendulum Skid Resistance Tester (BSI, 1990) 44
3.3 Spot Locations at Jalan Reservoir Kuching 4 7
3.4 Spot Location at Dewan Bandaraya Kuching Utara (DBKU) 48
xv
4.1 Layout Overall of Spot Location at Jalan Reservoir Kuching 50
4.2 Layout Overall of Spot Location at Jalan Dewan Bandaraya
Kuching Utara (DBKU) 50
4.3 Average Friction Value (FV) for down to up at
Jalan Reservoir Kuching 56
4.4 Average Friction Value (FV) for up to down at
Jalan Reservoir Kuching 56
4.5 Total Average Friction Value (FV) for upgrade at
Jalan Reservoir Kuching 57
4.6 Grade and Total Average Friction Value (FV) at
Jalan Reservoir Kuching 58
4.7 Average Friction Value (FV) for upgrade (down to up) at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 59
4.8 Average Friction Value (FV) for upgrade (up to down) at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 59
4.9 Total Average Friction Value (FV) for upgrade at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 61
4.10 Grade and Total Average Friction Value (FV) at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 61
4.11 Average Skid Resistance Value (SRV) for downgrade
(down to up) at Jalan Dewan Bandaraya Kuching Utara (DBKU) 62
4.12 Average Skid Resistance Value (SRV) for downgrade
(up to down) at Jalan Dewan Bandaraya Kuching Utara (DBKU) 63
4.13 Total Average Skid Resistance Value (SRV) for downgrade at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 64
4.14 Total Average Skid Resistance Value (SRV) and Grade at
Jalan Dewan Bandaraya Kuching Utara (DBKU) 64
xvi
LIST OF EQUATION
EQUATION Page
2.1 Friction Factor 29
2.2 Skid Number 29
2.3 Skid Resistance Value 34
xvii
LIST OF SYMBOLS
T - Tangent length
R - Radius of segment of the circle
PC - the point at which the curve begins is known as the point of curve
PT - the point at which it ends is known as the point of Tangent
PI or V - the point at which the two tangent intersect is known as the point
intersection or vertex
E - External Distance
Mo - Middle Ordinate
- Deflection Angle
f - Friction factor
F - Friction resistance to motion in plane of interface
L - Load perpendicular to interface
SRV - Skid Resistance Value
SFC - Sideways Force Coefficients
CHAPTER 1
INTRODUCTION
1.1 Background
Consequently, engineers are continually facing the problem of maintaining
and developing a pavement system to accommodate the movement of people in
roadways. Since road are an essential part of everyday life, engineer are trying to fine
other alternative design using sub-material standard to improve performance of the
pavement. In term of that, automobile, truck, bus and airport traffic is growing every
year, and the loads are getting heavier. The pavement would be distressed caused by
the deficiencies in construction, materials, and maintenance and are not related
directly to design. There are many types of pavement distress such as alligator or
fatigue cracking, block cracking, joint reflection cracking from concrete slab,
blowup, corner break, and faulting of transverse joints and cracks sometime exposed
aggregate. These exposed aggregates flexible pavement is slippery when wet. In
2
term of year, skid resistance of concrete pavement can be decrease polished by tire
and it effect slippery when wet and accident can occur. Today's highways often
handle two to three times the traffic they were designed to carry.
According to Seiler L. (2004), the percentage of wet accidents is almost
constant by all three categories such as weak curvature, strong curvature and
junction. Various research has been done over many years to minimize the accident
due to skid resistance or to define guideline for minimum skid resistance values. The
factors must be considered when determining highway safety are skid resistance,
pavement texture, roughness, and rutting; tire type, tread, and inflation pressure;
vehicle speed, type, axle load, and brake slip; and environmental condition.
1.2 Road Pavement
The use of concrete pavement in Malaysian highways has just been
introduced. Some assumptions made in the design and constructions were using
foreign knowledge and experience. The pavement is the structure that separates the
tires of vehicle from the underlying foundation material. In Europe pavements have
traditionally been classified as flexible or rigid. Flexible pavement consists of three
main layers, the bituminous surfacing, the base (or road base), and the subbase.
Concrete pavements normally consist of two layers only, the concrete slab and the
subbase.
3
Concrete pavements are by far the best long-term value because of their
longer life expectancies, durability and minimal maintenance requirements. The
rigidity of concrete pavements allows them to keep their smooth riding surface long
after construction. Smoother pavements create safer, more comfortable riding
surfaces. Concrete does not rut, so there is no hydroplaning and stress on an
automobile's steering system. Concrete reflects 33 to 50 percent more light than
asphalt, especially important for driving safely at night. Concrete actually gets
stronger over time. After its first month in place, concrete continues to slowly gain
ten percent strength during its life. Concrete can best withstand the heaviest traffic
loads. There's no need to worry about ruts, shoving or washboard effects possible
with asphalt pavements. Concrete pavements are easily textured during construction
to create a surface that provides superior traction and a quiet ride. Depending on the
system requirements, concrete pavements can be designed to last 40 years and more,
thus making concrete the best long-term pavement solution. Concrete pavements
frequently outlast both their designed life expectancy and traffic loads. The durability
of concrete minimizes the need for extensive repairs or annual maintenance.
1.3 Skid Resistance
Skidding is a lost adhesion between a vehicle’s tires and the pavement
surface, occur in many road accidents whether or not it is the actual causes of the
accident. Over the years tire manufactures have done a lot of research into different
4
type of rubber and thread patterns to improve the safety of motor vehicles. Increasing
and higher axle loads lead to growing stress of the road surface. Polishing of mineral
aggregates may cause a lower skid resistance and dangerous reduction of traffic’s
safety.
Skid resistance is the force developed when a tire that is prevented from
rotating slides along the pavement surface. Skid resistance depends on a pavement
surface’s microtexture and macrotexture. Microtexture is defined by smaller
deviations in the surface, less than 0.2 in. (0.5 mm). Microtexture is the primary
influence on skid resistance of vehicle tires traveling less than 25 mph (40 kph) that
control contact between the tire rubber and the pavement surface. Macrotexture is
defined as 0.2 in. (0.5 mm) scale texture of the pavement as a whole due to aggregate
particle, which control the escape of water from under the tire and hence the loss of
skid resistance with increased speed.
1.4 Measuring Pavement Skid Resistance
Highway engineer have researched ways to improve the skid resistance of
road surface. With devices to measure skidding resistance, researchers then
monitored changes during the life of the road pavement. It was found that skid
resistance falls rapidly after road is opened to traffic but the rate of deterioration
slows down, eventually settling to a constant value. This latter value is dependent on