Energy Efficiency in Buildings: Study of Single-Leaf Walls Made with Clay Bricks

AbstractThe aim of this work is to study the possibility of improving the thermal transmittance of a single-leaf wall made with lightened clay bricks. A first aspect is to study the possibility of lightening the clay by using additives, reducing the clay’s conductivity without decreasing its resistive ability. The clay’s conductivity has been decreased by up to 40% through the use of a suitable proportion of additives, with no reduction in the brick’s compressive strength. This drop in conductivity (40%) represents a reduction of 20% in the wall’s thermal transmittance. The internal and external geometry of the bricks has been studied by the finite element method (FEM) for two types of clay, decreasing brick conductivity by 35%. Different wall assemblies with these bricks have been studied, obtaining a 24% improvement with a thin horizontal joint assembly. To quantify the savings made, a standard building has been studied, which has shown that decreasing the wall’s thermal transmittance by 43% would save ...

[1]  I. Demir.  An investigation on the production of construction brick with processed waste tea , 2006 .

[2]  M. Juárez,et al.  Study of the geometry of a voided clay brick using non-rectangular perforations to optimise its thermal properties , 2011, Energy and Buildings.

[3]  İlker Bekir Topçu,et al.  Manufacture of high heat conductivity resistant clay bricks containing perlite , 2007 .

[4]  He Yongning,et al.  Optimization of the configuration of 290 140 90 hollow clay bricks with 3-D numerical simulation by finite volume method , 2008 .

[5]  Rahul V. Ralegaonkar,et al.  Development of sustainable construction material using industrial and agricultural solid waste: A review of waste-create bricks , 2011 .

[6]  Carla E. Hori,et al.  Characterization of ceramic bricks incorporated with textile laundry sludge , 2012 .

[7]  Lei Li,et al.  Numerical thermal optimization of the configuration of multi-holed clay bricks used for constructing building walls by the finite volume method , 2008 .

[8]  Nursev Bilgin,et al.  Use of waste marble powder in brick industry , 2012 .

[9]  Wander L. Vasconcelos,et al.  Microstructure and chemical degradation of adobe and clay bricks , 2009 .

[10]  C. Souza,et al.  Structural ceramics made with clay and steel dust pollutants , 2011 .

[11]  P. J. García Nieto,et al.  Nonlinear thermal optimization of external light concrete multi-holed brick walls by the finite element method , 2008 .

[13]  Lianyang Zhang,et al.  Production of bricks from waste materials – A review , 2013 .

[14]  Paulo B. Lourenço,et al.  Vertically perforated clay brick masonry for loadbearing and non-loadbearing masonry walls , 2010 .

[15]  M. Raimondo,et al.  Recycling PC and TV waste glass in clay bricks and roof tiles. , 2009, Waste management.

[16]  Theodoros Theodosiou,et al.  The impact of thermal bridges on the energy demand of buildings with double brick wall constructions , 2008 .

[17]  I. Demir,et al.  Utilization of kraft pulp production residues in clay brick production , 2005 .

[18]  J. E. Oti,et al.  Design thermal values for unfired clay bricks , 2010 .

[19]  K. Ghazi Wakili,et al.  U-value of a dried wall made of perforated porous clay bricks Hot box measurement versus numerical analysis , 2003 .