Fired Clay Brick or Autoclaved Aerated Concrete as Walling Materials in Terms of Sustainability

Click here for manuscript sample templateThe construction sector is a significant contributor to harmful environmental impacts throughout the entire building life cycle. The fact that a large amount of and a wide range of materials used in construction makes their environmental impacts important. In this context, Environmental Product Declarations contribute to compare the environmental impacts of the building materials with the same functional unit for the same processes. Fired clay brick (FCB) and autoclaved aerated concrete (AAC) are commonly used materials for the exterior walls in Turkey. In this study, it was aimed to analyze the environmental impacts and identify environmental hot spots to improve the sustainability of the two materials in the scope of the “cradle to gate”. EPDs and local data obtained from two factories through mutual interviews were used. The environmental impacts of FCB caused by raw materials acquisition and transportation are less than AAC. On the other hand, the manufacturing of FCB is an energy-intensive process because of the firing and firing temperatures compared to the manufacturing process of AAC. It is thought that the results of this study can be useful to improve the sustainability of the materials and to select sustainable building materials.

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  • [1]. Ding, G.K.C. LCA of Sustainable Building Materials: An Overview, 3, 38-62, Woodhead Publishing Limited, 2014; pp 38- 62.
  • [2]. EN ISO 14040, 2006. Environmental management – Life Cycle Assessment, principles and framework.
  • [3]. EN 15804, EN15804+A1:2014. 2014). Sustainability of construction works. Environmental Product Declarations. Core rules for the product category of building materials.
  • [4]. ISO 14025, 2011. ISO 14025:2011-10 Environmental labels and declarations. Type III environmental declarations, principles and procedures.
  • [5]. Bribian, I, Z, Capilla, A, V, Uson, A, A. 2011. LCA of building materials: Comparative analysis of energy and environmental impacts and evaluation of the eco- efficiency improvement potential. Building and Environment; 46: 1133- 1140.
  • [6]. Franzoni, E. 2011. Materials selection for green buildings: which tools for engineers and architects. Procedia Engineering; 21: 883- 890.
  • [7]. Calkins, M. Materials for Sustainable Sites: A Complete Guide to the Evaluation, Selection, and Use of Sustainable Construction Materials, John Wiley & Sons, Inc., Hoboken, New Jersey, 2009.
  • [8]. Berge, B. The Ecology of Building Materials, 2nd edition, Architectural Press: Elsevier, Oxford, 2009
  • [9]. Murmu, A, L, Patel, A. 2018. Towards sustainable brick production: An overview. Construction and Building Materials; 165: 112- 125.
  • [10]. Kömürlü, R, Önel, H. 2007. Usage of aerated concrete construction elements in houses. Megaron; 2 (3): 145-158.
  • [11]. Nadoushani, Z.S.M, Akbarnezhad, A. 2017. Multi-criteria selection of facade systems based on sustainability criteria. Building and Environment, 121: 67-78.
  • [12]. Sangeeth, A., Perera, R., Perera, N. 2019. “Cradle to gate” assessment of material related embodied carbon: a design stage stratagem for sustainable housing, 5th International Conference on Countermeasures to Urban Heat Islands (IC2UHI).
  • [13]. Shukla, R. 2014. Burnt clay bricks versus AAC blocks: a comparative analysis, international journal of Engineering and Research Technology, 3,11, 575-580.
  • [14]. Esin, T. 2007. A study regarding the environmental impact analysis of the building materials production process (in Turkey). Building and Environment; 42 (11): 3860- 3871.
  • [15]. TS EN 771-1+A1, 2015. Specification for masonry units - Part 1: Clay masonry units.
  • [16]. Kumar, S, Maithel, S. Introduction to Brick Kilns and Specific Energy Consumption Protocol for Brick Kilns, Greentech Knowledge Solutions Pvt. Ltd, New Delhi, India. https://breathelife2030.org/wp-content/uploads/2016/09/12.pdf. (accessed at 10.05.2019).
  • [17]. TS EN 12602, 2016. Prefabricated reinforced components of autoclaved aerated concrete.
  • [18]. EPD, generic brick, UK, https://www.mbhplc.co.uk/wpcontent/uploads/brick-epd.pdf (accessed at 20.05.2019).
  • [19]. EPD, gray brick, Denmark, http://www.epddanmark.dk/site/images/gallery/md-17002-en/MD-17002-EN_rev1.pdf (accessed at 20.05.2019).
  • [20]. EPD, extruded brick, Norway, https://www.wienerberger.co.uk/download-centre.html, (accessed at 20.05.2019).
  • [21]. EPD, yellow brick, Denmark, http://www.epddanmark.dk/site/images/gallery/md-18015-EN/MD-18015-EN.pdf, (accessed at 20.05.2019).
  • [22]. EPD, AAC, Turkey http://www.akggazbeton.com/SF/591/AKG-EPD-2018-2023.pdf (accessed at 20.05.2019).
  • [23]. EPD, AAC, Germany, https://www.environdec.com/Detail/?Epd=10333 (accessed at 20.05.2019).
  • [24]. EPD, AAC, England, https://epdonline.com/PublishedEpd/Detail/9480 (accessed at 20.05.2019).
  • [25]. EPD, AAC, Germany, https://epdonline.com/PublishedEpd/Detail/10266 (accessed at 20.05.2019).
  • [26]. 26. IPCC: Guidelines for National Greenhouse Gas Inventories., United Nations Intergovernmental Panel on Climate Change, 2006. http://www.ipccnggip.iges.or.jp/public/2006gl/vol1.html (accessed at 15.07.2019)