journal article·2022-12Open access

Exploring the applicability of expanded polystyrene (EPS) based concrete panels as roof slab insulation in the tropics

D.P.P. Meddage, Aaron Chadee, M.T.R. Jayasinghe, Upaka Rathnayake

Abstract

Heat transfer through roof slabs significantly increases the operational energy consumption of buildings. Therefore, passive implementations are necessary to improve the thermal performance of roof slabs in tropical climates. This paper presents a novel roof slab insulation using expanded polystyrene (EPS) based lightweight concrete panels. The workflow consists of field experiments and numerical simulations performed in Design Builder. Moreover, we offered a holistic life-cycle approach to investigate the economic and environmental feasibility of alternate forms. Accordingly, the roof slab with 75 mm EPS insulation and a white exposed surface performed satisfactorily. Corresponding decrease in life cycle cost, carbon emission (kgCO2e), and operational energy consumption were 8.3%, 20%, and 41%, respectively. The overall eco-efficiency index (EEI) implies that the recommended insulation system is environmentally and economically feasible under tropical climatic conditions. Further, manufacturing EPS concrete is eco-friendly since it reduces EPS waste content which does not decay through natural means.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Hygrothermal properties of building materials · Building Energy and Comfort Optimization · Urban Heat Island Mitigation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (86)

Show source-provided references
1. Understanding the potential loss and inequities of green space distribution with urban densification10.1016/j.ufug.2015.09.003 ↗
2. Effects of Pakistan’s energy crisis on farm households10.1016/j.jup.2019.100930 ↗
3. The Venezuelan energy crisis: renewable energies in the transition towards sustainability10.1016/j.rser.2019.02.014 ↗
4. Mitigating the current energy crisis in Nepal with renewable energy sources10.1016/j.rser.2019.109388 ↗
5. Energy efficiency investments in small and medium sized manufacturing firms: the case of California energy crisis10.1016/j.eneco.2017.12.006 ↗
6. Assessment of the renewable energy generation towards net-zero energy buildings: a review10.1016/j.enbuild.2021.111755 ↗
7. Scarcity-weighted fossil fuel footprint of China at the provincial level10.1016/j.apenergy.2019.114081 ↗
8. D.P. P. Meddage and M.T. R. Jayasinghe, “Use of EPS Based Light-Weight Concrete Panels as a Roof Insulation Material for NERD Slab System,” in ICSBE 2020, Singapore, 2022, pp. 375–384. doi: 10.1007/978–981-16–4412-2_28.10.1007/978-981-16-4412-2_28 ↗
9. Assessing the real-time thermal performance of reinforced cement concrete roof during summer- a study in the warm humid climate of Kerala
10. J. Ran, M. Tang, L. Jiang, and X. Zheng, Effect of building roof insulation measures on indoor cooling and energy saving in rural areas in Chongqing, 2017, pp. 669–675.10.1016/j.proeng.2017.04.226 ↗
11. Recent research and development on the use of reflective technology in buildings – a review
12. A study on the comparative review of cool roof thermal performance in various regions
13. A performance of hollow clay tile (HCT) laid reinforced cement concrete (RCC) roof for tropical summer climates10.1016/j.enbuild.2006.05.009 ↗
14. Energy consumption and air-conditioning usage in residential buildings of Malaysia
15. Potential retrofitting of existing campus buildings to green buildings10.4028/www.scientific.net/AMM.178-181.42 ↗
16. M. Nandapala and R.U. Hahvatura, Prioritizing effective means of retrofitting flat slabs to meet public demands in order to promote sustainable built environment, 2014, Accessed: Dec. 25, 2021. [Online]. Available: 〈http://dl.lib.uom.lk/handle/123/15517〉.
17. Energy end-use: buildings
18. Cool roofs and cool pavements application in Acharnes, Greece10.1016/j.scs.2017.11.035 ↗
19. Roof solar reflectance and cooling energy use: field research results from Florida10.1016/S0378-7788(96)01000-6 ↗
20. Study on the cool roof effect of Japanese traditional tiled roof: numerical analysis of solar reflectance of unevenness tiled surface and heat budget of typical tiled roof system10.1016/j.enbuild.2011.09.023 ↗
21. Modelling of cool roof performance for double-skin roofs in tropical climate10.1016/j.energy.2015.01.092 ↗
22. Theoretical and experimental studies on the daily accumulative heat gain from cool roofs10.1016/j.energy.2017.04.077 ↗
23. Estimating the effect of using cool coatings on energy loads and thermal comfort in residential buildings in various climatic conditions10.1016/j.enbuild.2007.01.004 ↗
24. Reducing cooling demands in a hot dry climate: a simulation study for non-insulated passive cool roof thermal performance in residential buildings10.1016/j.enbuild.2014.12.034 ↗
25. Monitoring the energy-use effects of cool roofs on California commercial buildings10.1016/j.enbuild.2004.11.013 ↗
26. Cool roofs for passive cooling: performance in different climates and for different insulation levels in Italy10.1080/17512549.2013.865556 ↗
27. Cool roof and ventilation efficiency as passive cooling strategies for commercial low-rise buildings – ground thermal inertia impact10.1080/17512549.2013.865559 ↗
28. Passive cooling systems for cement-based roofs10.1016/j.buildenv.2008.12.012 ↗
29. B.S.S.S. Dareeju, J.N. Meegahage, and R.U. Halwatura, Influence of Grass Cover on Flat Reinforced Concrete Slabs in A Tropical Climate, presented at the International Conference on Sustainable Built Environment, Kandy, 2010.
30. The impact of greening systems on building energy performance: a literature review10.1016/j.rser.2015.02.011 ↗
31. State-of-the-art analysis of the environmental benefits of green roofs10.1016/j.apenergy.2013.10.047 ↗
32. Green roofs as urban ecosystems: ecological structures, functions, and services10.1641/B571005 ↗
33. Quantifying the deposition of particulate matter on climber vegetation on living walls10.1016/j.ecoleng.2009.02.007 ↗
34. Quantifying air pollution removal by green roofs in Chicago10.1016/j.atmosenv.2008.07.003 ↗
35. Thermal behaviour of a green roof containing insulation cork board. An experimental characterization using a bioclimatic chamber10.1016/j.buildenv.2019.106179 ↗
36. Thermal performance of insulated roof slabs in tropical climates10.1016/j.enbuild.2007.10.006 ↗
37. Influence of insulated roof slabs on air conditioned spaces in tropical climatic conditions—A life cycle cost approach10.1016/j.enbuild.2009.01.005 ↗
38. Design of a durable roof slab insulation system for tropical climatic conditions10.1080/23311916.2016.1196526 ↗
39. Developing a durable thermally insulated roof slab system using bamboo insulation panels10.1007/s40095-019-0308-x ↗
40. A study on the feasibility of a new roof slab insulation system in tropical climatic conditions10.1016/j.enbuild.2019.109653 ↗
41. Operational feasibility of a hybrid roof insulation system with bamboo and vegetation: an experimental study in tropical climatic conditions
42. Thermal performance of concrete-based roofs in tropical climate10.1016/j.enbuild.2014.02.076 ↗
43. Modeling of cool roof heat transfer in tropical climate10.1016/j.renene.2014.09.045 ↗
44. K.T. Zingre, X. Yang, and M. Wan, Performance Analysis of Cool Roof, Green Roof and Thermal Insulation on a Concrete Flat Roof in Tropical Climate, 2015. doi: 10.5109/1544078.10.5109/1544078 ↗
45. Beyond boundaries: a global use of life cycle inventories for construction materials10.1016/j.jclepro.2017.04.010 ↗
46. Evaluation of environmental impact and benefits for remanufactured construction equipment parts using Life Cycle Assessment10.1016/j.promfg.2019.04.035 ↗
47. Structural feasibility of Expanded Polystyrene (EPS) based lightweight concrete sandwich wall panels10.1016/j.conbuildmat.2017.02.027 ↗
48. Behaviour of lightweight expanded polystyrene concrete containing silica fume10.1016/S0008-8846(02)01055-4 ↗
49. Physical and mechanical characterization of Portland cement mortars made with expanded polystyrene particles addition (EPS)10.3989/mc.2012.04611 ↗
50. Valorisation of waste expanded polystyrene in concrete using a novel recycling technique
51. Properties of concrete containing waste expanded polystyrene and natural resin10.1016/j.conbuildmat.2015.12.177 ↗
52. J.M. Khatib and A. Elkordi, Characteristics of concrete containing EPS, in Use of Recycled Plastics in Eco-efficient Concrete, 2019, pp. 137–165. [Online]. Available: https://doi.org/10.1016/B978–0-08–102676-2.00007–4.10.1016/B978-0-08-102676-2.00007-4 ↗
53. The combined effect of heat and moisture transfer dependant thermal conductivity of polystyrene insulation material: impact on building energy performance10.1016/j.enbuild.2018.03.055 ↗
54. Thermal conductivity and shrinkage properties of modified waste polystyrene aggregate concretes10.1016/j.conbuildmat.2012.04.105 ↗
55. Properties of lightweight expanded polystyrene aggregate concretes containing fly ash10.1016/j.cemconres.2004.11.015 ↗
56. Experimental application of EPS concrete in the new prototype design of the concrete barrier10.1016/j.conbuildmat.2016.07.105 ↗
57. Mechanical and physical properties of expanded polystyrene structural concretes containing Micro-silica and Nano-silica10.1016/j.conbuildmat.2017.01.040 ↗
58. The effect of expanded polystyrene synthetic particles on the fracture parameters, brittleness and mechanical properties of concrete
59. Particle size effect on EPS lightweight concrete compressive strength: experimental investigation and modelling10.1016/j.mechmat.2006.05.008 ↗
60. Mechanical properties and durability performance of reinforced concrete containing fly ash10.1016/j.conbuildmat.2015.10.127 ↗
61. Inventory of carbon & energy (ICE)
62. Effects of expanded polystyrene (EPS) particles on fire resistance, thermal conductivity and compressive strength of foamed concrete10.1016/j.conbuildmat.2016.02.218 ↗
63. “IS 14862: 2000 FIBRE CEMENT FLAT SHEETS - SPECIFICATION,” BIS 2000, New Delhi, 2002.
64. The economics of green buildings: aA life cycle cost analysis of non-residential buildings in tropic climates10.1016/j.jclepro.2019.119771 ↗
65. 14:00–17:00, “ISO 15686–5:2017,” ISO. 〈https://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/06/11/61148.html〉 (accessed Dec. 25, 2021).
66. J.W. Bull, Life Cycle Costing for Construction. 1993. Accessed: Dec. 25, 2021. [Online]. Available: 〈https://www.routledge.com/Life-Cycle-Costing-for-Construction/Bull/p/book/9780367579937〉.
67. Green buildings life cycle cost analysis and life cycle budget development: practical applications10.1016/j.jobe.2018.03.015 ↗
68. Kirk · 1995
69. Life cycle costing
70. Framework for construction system selection based on life cycle cost and sustainability assessment10.1016/j.jclepro.2019.118397 ↗
71. Salvaging building materials in a circular economy: a BIM-based whole-life performance estimator10.1016/j.resconrec.2017.10.026 ↗
72. Comparative whole-building life cycle assessment of renovation and new construction10.1016/j.buildenv.2019.106218 ↗
73. Ranking of walling materials using eco-efficiency for tropical climatic conditions: a survey-based approach10.1016/j.enbuild.2021.111503 ↗
74. Eco-efficiency analysis of the life cycle of interior partition walls: a comparison of alternative solutions10.1016/j.jclepro.2015.07.136 ↗
75. A comparative life cycle assessment (LCA) of different insulation materials for buildings in the continental Mediterranean climate10.1016/j.enbuild.2020.110323 ↗
76. A comparative embodied energy analysis of a house with recycled expanded polystyrene (EPS) based foam concrete wall panels10.1016/j.enbuild.2016.11.044 ↗
77. The carbon footprint of buildings: a review of methodologies and applications10.1016/j.rser.2018.07.012 ↗
78. Embodied, operation, and commuting emissions: a case study comparing the carbon hotspots of an educational building10.1016/j.jclepro.2020.122081 ↗
79. B.G.V. Sanjaya, W.W.P.K. Perera, W.M.S. Srilal, and S.P. Sooriyaarachchi, Investigation on Improvement of Low Cost NERD Slab System, 2015, pp. 133–147.
80. Methods for predicting the thermal conductivity of composite systems: a review10.1002/pen.760160905 ↗
81. Hammond · 2011
82. The promotion strategy of green construction materials: a path analysis approach10.3390/ma8105354 ↗
83. Carbon footprint of green roofing: a case study from Sri Lankan construction industry10.3390/su13126745 ↗
84. M. Newlands, M. Jones, M.J. Mccarthy, and L. Zheng, Using Fly Ash to Achieve Low Embodied CO 2 Concrete, 2012, Accessed: Jul. 10, 2022. [Online]. Available: 〈https://www.semanticscholar.org/paper/Using-Fly-Ash-to-Achieve-Low-Embodied-CO-2-Concrete-Newlands-Jones/fc418227eb1da42c5c42e4a173a492383ba0eb2a〉.
85. BS 8110–1, Structural use of concrete. Code of practice for design and construction. 1997.
86. A review on insulation materials for energy conservation in buildings10.1016/j.rser.2017.02.034 ↗