1. Sustainability Analysis for Alternative Roofing Materials to Reduce Asbestos Use in Sri Lanka
Student Name :Nuwan Ariyawansha Academic supervisor :Professor Yabar Helmut Student ID ： 1

2. Outline of Presentation1 2 3 4 5 6 7 8 9
Background of Research Research Question Objectives of the Research
Data Collection Study Area Methodology
Results Discussion Future Work

3. 1 Background of Research
According to the World Health Organization; All types of asbestos cause lung cancers. For example Asbestosis and Mesothelioma are the most common cancers.
Source: /2/6 3

4. 1 Background of Research
1.1 Asbestos banned nations around the world
According to the International Ban Asbestos Secretariat; Asbestos is banned in 55 countries worldwide. However, it has not been banned in China, Russia, India, Canada and the United States.
Asbestos banned nations 4
Source /02/06

5. 1 Background of Research
1.2 Asbestos limiting policy decisions in Sri Lanka
1987
Blue Asbestos (Crocidolite) banned
Government decided to limit the White Asbestos( Chrysotile) and promote substitutes from
2016
Government changed the above decision and emphasis more study to limit the White Asbestos.
2017
Source :- 5

6. 1 Background of Research
1.3 Principal roofing materials distribution of occupied housing units
2001
2012
8% 1%2%
2% 0.20%
0.90% 10.30%
4.10%
14%
47.50% 2%
55%
18%
35.10%
Tile Concrete
Cadjan/Palmyrah/Straw Not reported
Asbestos Metal sheet Other
Tile Concrete Metal Sheet Other
Asbestos
Zink Aluminium Sheet Cadjan/palmyrah Straw
Source：-Department of Census and Statistics 2001 and 2012

7. 1 Background of Research
1.4 Variation of Asbestos and Zinc Aluminum import to Sri Lanka
70000
y = x - 4E+06
60000
50000
Import Quantity/(Tons)
Asbestos
Zinc Aluminium
40000
30000
20000
y = x - 4E+06
10000
2000
2002
2004
2006
2008
2010
2012
2014
2016
2018
Year 7
Source：- Sri Lanka Customs

8. 2 Research Question
How can Sri Lankan government implement a long lasting national policy to limit Asbestos in construction industry, while supporting the country’s economy, national health, and selecting alternative roofing materials?

9. 3 Objectives of the Research
To identify clustering pattern of roofing materials use in Sri Lanka.
To observe spatial and temporal variation of roofing materials in the country.
To propose suitable measures to government to reduce Asbestos and identify alternative materials.

10. 4 Data Collection Primary Data
Production quantity and Electricity consumption data from three
clay tile factories and two Zinc Aluminum factories.
Secondary Data
Department of Census and Statistics Sri Lanka. Sri Lanka Customs data.
Academic Journals, publications, etc..

11. 5 Study Area 322divisions in 25 districts

12. 6 Methodology 2001 Statistical Data 2012 Statistical Data
Alternative material
manufacturing data
Asbestos Clay tile
Zinc Aluminum
Asbestos Clay tile
Divisional Secretary Division
Clay tile Zinc Aluminum
Divisional Secretary Division
Input the Percentage of roof materials
Optimized hot spot analysis
Life Cycle Assessment
Cold spot-99% Confidence Cold spot-95% Confidence Cold spot-90% Confidence Not significant
Hot spot-90% Confidence Hot spot-95% Confidence Hot spot-99% Confidence
Global Warming Potential (GWP) Acidification Potential (AP)
Health Impact Potential (HIP).
Spatial and Temporal changes
Environmental Effect
Suitable mitigation measures to reduce asbestos usage and promote alternatives 12

13. 7 Results
7.1 Asbestos clustering pattern 13

14. 7 Results
7.2 Clay tile clustering pattern 14

15. 7 Results
7.3 Zinc Aluminum clustering pattern 2012

16. 7 Results
Hot spots and cold spots of Tile, Asbestos and Zinc Aluminum (% of Administrative divisions to the total)
Tile
Asbestos
Zn/Al
2001
2012
Cold spot-99% Confidence
21.27
32.46
19.78
25.75
26.87
Cold spot-95% Confidence
10.45
4.85
6.34
4.10
3.73
Cold spot90% Confidence
2.61
1.49
3.36
Not significant
42.16
26.49
30.22
35.45
Hot spot90% Confidence
1.87
2.99
1.12
Hot spot95% Confidence
7.84
Hot spot99% Confidence
17.91
30.60
Total
100.00

17. 7 Results
Summary of Hot spots and cold spots of Tile, Asbestos and Zinc Aluminum (% of Administrative divisions to the total)
Material
Tile
Asbestos
Zn/Al
Year
2001
2012
Cold spot
34.33
38.81
29.85
33.21
32.09
Not significant
42.16
26.49
30.22
35.45
Hot spot
23.51
34.70
27.99
36.57
32.46
100.00

18. 8 Discussion
Asbestos hot spots are concentrated in developed areas in (Colombo and Kandy).
New Asbestos hot spots have been forming in the Northern section of the country.
Clay tile hot spots are concentrated in Southern and North-Western parts of the country in 2001.
A new Clay tile hot spot has been formed in the South-Eastern section, and hot spot in the North-Western section has expanded.
Zinc Aluminum hot spots are formed in the central part of the country in 2012.

19. 9 Future Work
Identify Socio-economic factors for roofing materials usage based on the Hot spot analysis.
Calculation of Global Warming Potential (GWP), Acidification Potential (AP) and Health Impact Potential (HIP).
Policy study for reducing asbestos usage.