ABSTRACT
This project, Design and production of ceiling board using Plaster of Paris (POP) Gypsum materials. Gypsum is basically the raw material required in the manufacturing Plaster of Paris (POP) which posses an outstanding property and a good material for producing ceiling board. The materials procured for the project are plaster of Paris, fiber, water and mould. The equipment used for the project are scrapper, measuring tape, mixing bowl, bucket. Firstly, water was poured into the container (mixing bowl) and plaster of Paris sprinkled, two minutes was waited for absorption and then the mortar was mixed with hand and shaked vigorously to obtain a fully homogeneous mixture and thereafter the mortar was sprayed on the mould and fiber was added which serves as reinforcement. Water absorption test was carried out on the sample and the result indicated that plaster of Paris (POP) ceiling board has an average 8.4 percent water absorptivity compare to Asbestos with 0.5 percent. Therefore plaster of paris (POP) ceiling board absorb water readily in case there is water leakage of the roof. Flexural strength test was carried out and the result obtained showed that plaster of paris (POP) ceiling board has a mean flexural strength of 11.4 N/mm2 and Asbestos has an average flexural strength of about 1.00 N /mm2To this end, it is proved that plaster of paris (POP) ceiling board posses sufficient strength and it is durable for Civil Engineering works.
TABLE OF CONTENTS
Title page i
Certification ii
Dedication iii
Acknowledgement iv
Abstract v
Table of contents vi
List of plates ix
List of tables x
CHAPTER ONE
1.0 Introduction 1
1.1 Statement of problem 3
1.2 Aim and Objectives 3
1.3 Justification of study 3
1.4 Scope of the study 4
CHAPTER TWO
2.0 Literature Review 5
2.1 History of Gypsum 6
2.2 Old use of Gypsum 7
2.3 Modern use of Gypsum 8
2.4 Gypsum Credential 9
2.5 Gypsum product and its unique properties 10
2.5.1 Fire Resistance 10
2.5.2 Acoustic Properties 11
2.5.3 Thermal Properties 11
2.5.4 Aesthetics and Design 12
2.5.5 Sound Isolation Properties 12
2.6 Manufacture of plaster from Gypsum 12
2.7 Physical Properties of Gypsum 13
2.8 Chemical Properties of Gypsum 14
2.9 Survey on Hemp core fiber 14
CHAPTER THREE
3.0 Methodology 17
3.1 Procurement of Materials 17
3.2 Equipment used for the project 17
3.3 Preparation of Mould 17
3.4 Preparation of separator 18
3.5 Mixing of Aggregate 18
3.6 Casting 18
3.7 Demoulding 19
3.8 Water Absorption Test 19
3.9 Flexural Strength Test 20
CHAPTER FOUR
4.0 Result and Discussion 21
4.1 Plates 21
4.2 Tables and Calculation 32
CHAPTER FIVE
5.0 Conclusion and Recommendation 34
5.1 Conclusion 34
5.2 Recommendation 35
REFERENCES 36
