ABSTRACT 

This project focuses on investigation into the causes and Remedial measures of pavement failure at Ganmon-Afon road Kwara State.

The measuring of pavement and types of pavement. Types of pavement failures causes of pavement were studied and possible solution were provided. Form the investigation causes of pavement failure were identified as ranging from. Use of substandard materials. Inadequate compaction. Poor material strength due to the presence of refuse particle in the materials used. Poor maintenance improper drainage and improper chamber of the road. Some major are pothole, defects observed on the roads are cracking reveling rutting, blast erosion edge deterioration and drainage blockage. The soil samples were collected from three deferent portion of the road. The photographs of failed section were taken. Those problems can be ratified by not compromising standard of work during construction proper maintenance practices from time to and high quality control measure during construction and rehabilitation.   

TABLE OF CONTENTS

Title page i

Certification ii

Declaration iii

Dedication iv

Acknowledgement v

Abstract vi

Table of content vii

CHAPTER ONE

1.0 Introduction 1

1.1 Aims and objective 3

1.2 Scope and objective 3

1.3 Justification 4

1.4 Research methodology 5

CHAPTER TWO

2.0 Literature Review 6

2.1 Failure Of Pavement and their 7

2.1.1 Structural failure 7

2.1.2 Function failure     8

2.2.2 Factor to be considered in the construction of Road 10

2.2.3 Geological Factor (design) 10

2.2.2 Geotechnical Factor 11

2.2.3 Usage factor 12

2.3 Common form of pavement 13

2.3.1 Potholes 13

2.3.2 Wheel ruthing 14

2.3.3 Cracking 15

2.3.4 revealing (pitting) 16

2.3.5 Blast erosion 17

2.3.6 Distortion and wave 18

2.3.7 Peeling 18

CHAPTER THREE

3.0 Methodology 19

3.1 Reconnance survey of Ganmo- Afon Road 20

3.2 Various Types of Pavement Failure on Ganmo- Afon Road 21

3.3 collection of Samples for Laboratory Test 26

3.3.1 Laboratory Test and Procedures 26

3.3.2 Compaction Test 27

3.4 California Bearing Ration (CBT) Test 33

CHAPTER FOUR

4.0 Analysis and Discussion of Results 37

4.1 Types and Causes of Pavement Failure on Ganmo- Afon Roads 37

4.2 Subgrade Materials 38

4.3 Relative Compaction 38

4.4 California Bearing Ratio (CBT) 39

CHAPTER FIVE

5.0 Conclusion and Recommendation 39

5.1 conclusions 39

5.2 Recommendation 39