Paper Titles
Mortars with Phase Change Materials: Contribute to Sustainable Construction
p.3
Cool Façades - Thermal Performance Assessment Using Infrared Thermography
p.14
Mortars with Phase Change Materials - Part I: Physical and Mechanical Characterization
p.22
Mortars with Phase Change Materials - Part II: Durability Evaluation
p.33
Water-Resistance of Mortars with Lightweight Aggregates
p.46
Evaluation of High Reflective Products in Flat Roofs Rehabilitation – Experimental Study
p.54
Thermal Performance Characterization of a Modular System for Facade
p.62
Parabolic Solar Collector Coverage Made of High-Performance Concrete with Addition of Active Rice Husk Silica Integrated to a Biomass Thermoelectric Unit
p.72
Use of Waste Materials in the Production of Concrete
p.85

Water-Resistance of Mortars with Lightweight Aggregates

Article Preview

Abstract:

The incorporation of lightweight aggregates in cement-based coating mortars contributes to a better performance of some of their physical properties, influencing their hygrothermal behaviour. This paper analyses the effect of some lightweight aggregates (expanded clay, granulated cork and silica aerogel) on the following mortars’ characteristics: porosity, bulk density, capillary water absorption coefficient, drying index and water vapour permeability. The experimental results showed that low percentages of incorporation of lightweight aggregates led to more porous mortars with lower bulk density, higher capillary water absorption coefficient and greater drying facility, relative to the reference cement-based mortar. The incorporation of silica aerogel in cement-based mortars resulted in major differences in terms of water resistance, with significant benefits in terms of the drying process due to their porous structure.

You might also be interested in these eBooks
Sustainable Construction Materials View Preview

Info:

Periodical:

Key Engineering Materials (Volume 634)

Pages:

46-53

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.634.46

Citation:

Cite this paper

Online since:

December 2014

Authors:

António Soares*, Maria Júlio, Inês Flores-Colen, Laura Ilharco, Jorge de Brito, José Gaspar Martinho

Keywords:

Aerogel, Lightweight Aggregates, Porosity, Water-Resistance

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] M.J. Hanus and A.T. Harris, Nanotechnology innovations for the construction industry, Progress in Materials Science 58 (2013) 1056-1102.

DOI: 10.1016/j.pmatsci.2013.04.001

Google Scholar

[2] M.R.P. Rodrigues and O.P. Ferreira, Mortar with rubber particles obtained from the recycling of scrap tires (in Portuguese), in 3rd Portuguese Congress of Construction Mortars, Lisbon, (2010).

Google Scholar

[3] A.A. Brás, M. Leal and P. Faria, Mortars with improved thermal behavior with sustainable materials (in Portuguese), in 2nd Conference - Sustainable Construction and Rehabilitation of Buildings in Lusophone Space, FCT UNL, (2012).

Google Scholar

[4] J.A. Canova, R. Bergamasco and G. Neto, Comparative study between two types of render with the addition of rubber powder from scrap tires (in Portuguese), in VIII Brazilian Symposium on Technology of Mortar, Curitiba, (2009).

Google Scholar

[5] L. Dias, A. Paiva and J. Vieira, Reinforcement of renders with sisal fibers (in Portuguese), in 3rd Portuguese Congress of Construction Mortars, Lisbon, (2010).

Google Scholar

[6] C.E. Carbone, H. Santos, R.C. Romano and R. G Pileggi, Effect of adding latex in renders (in Portuguese), in IX Brazilian Symposium on Technology of Mortar, Belo Horizonte, (2011).

Google Scholar

[7] M. Konsta-Gdoutos, Z. Metaxa and S. Shah, Multi-scale mechanical and fracture characteristics and early-age strain capacity of high performance carbon nanotube/cement nanocomposites, Cement and Concrete Composites 32 (2) (2010) 110-115.

DOI: 10.1016/j.cemconcomp.2009.10.007

Google Scholar

[8] A. Shekari and M. Razzaghi, Influence of nano particles on durability and mechanical properties of high performance concrete, Procedia Engineering 14 (2011) 3036-3041.

DOI: 10.1016/j.proeng.2011.07.382

Google Scholar

[9] Th. Stahl, S. Brunner, M. Zimmermann and K. Ghazi Wakili, Thermo-hygric properties of a newly developed aerogel based insulation rendering for both exterior and interior applications, Energy and Buildings 44 (2012) 114-117.

DOI: 10.1016/j.enbuild.2011.09.041

Google Scholar

[10] A. Sdrmomtazi, A. Fasihi, F. Balalaei and A.K. Haghi, Investigation of mechanical and physical properties of mortars containing silica fume and nano-SiO2, The Third International Conference on Concrete and Development, Building and Housing Research Center (2009).

Google Scholar

[11] EN13055-1: Lightweight aggregates - Part 1: Lightweight aggregates for concrete, mortar rand grout. European Committee for Standardization CEN, Brussels, (2002).

DOI: 10.3403/02575612

Google Scholar

[12] NP EN206-1: Concrete - Part 1: Specification, performance, production and conformity (in Portuguese). Portuguese Institute for Quality IPQ, Lisbon, (2005).

Google Scholar

[13] J.A. Bogas, Characterization of structural concrete with lightweight aggregates of expanded clay (in Portuguese), PhD Dissertation in Civil Engineering, Instituto Superior Técnico, (2011).

Google Scholar

[14] M.L. Torres and P.A. García-Ruiz, Lightweight pozzolanic materials used in mortars: Evaluation of their influence on density, mechanical strength and water absorption, Cement and Concrete Composites 31 (2009) 114-119.

DOI: 10.1016/j.cemconcomp.2008.11.003

Google Scholar

[15] D. Frade, J. Gonçalves, S. Nascimento and A. Sequeira, Render with thermal properties (in Portuguese), in 3rd Portuguese Congress of Construction Mortars, Lisbon, (2010).

Google Scholar

[16] EuroLightConR1: Definitions and International Consensus Report. European Union - Brite EuRam III, BE96-3942/R1, (1988).

Google Scholar

[17] M.A. Aegerter, N. Leventis and M.M. Koebel, Aerogels handbook (Eds. ), Springer Science + Business Media, New York, (2011).

Google Scholar

[18] E. M. Kalhori, K. Yetilmezsoyb, N. Uygurc, M. Zarrabia and R. Shmeis, Modeling of adsorption of toxic chromium on natural and surface modified lightweight expanded clay aggregate (LECA), Applied Surface Science 287 (2013) 428-442.

DOI: 10.1016/j.apsusc.2013.09.175

Google Scholar

[19] R. Bartolini, S. Filippozzib, E. Princib, C. Schenonea and S. Vicini, Acoustic and mechanical properties of expanded clay granulates consolidated by epoxy resin, Applied Clay Science 48 (2010) 460-465.

DOI: 10.1016/j.clay.2010.02.007

Google Scholar

[20] A. Ferreira, J. de Brito and F. Branco, Relative performance of mortar with expanded clay in the execution of shape layers (in Portuguese), in 2º Portuguese Congress of Construction Mortars, APFAC, Lisbon, (2007).

Google Scholar

[21] L.M. Ilharco, A. Fidalgo, J. P Farinha, J. M Gaspar Martinho and M.E. Rosa, Nanostructured silica/polymer subcritical aerogels, Journal of Materials Chemistry 19 (2007) 2195-2198.

DOI: 10.1039/b703631k

Google Scholar

[22] L. Gil, Cork as a building material - technical manual, APCOR - Portuguese Cork Association, (2007).

Google Scholar

[23] L. Gil, Cork - Production technology and application (in Portuguese), Ed. INETI, Lisbon, (1998).

Google Scholar

[24] O. Castro, J. Silva, T. Devezas, A. Silva and L. Gil, Cork agglomerates as an ideal core material in lightweight structures, Materials and Design 31 (2010) 425-432.

DOI: 10.1016/j.matdes.2009.05.039

Google Scholar

[25] A. Brás, M. Leal and P. Faria, Cement-cork mortars for thermal bridges correction. Comparison with cement-EPS mortars performance, Construction and Buildings Materials 49 (2013) 315-327.

DOI: 10.1016/j.conbuildmat.2013.08.006

Google Scholar

[26] P. Nóvoa, M. Ribeiro, A. Ferreira and A. Marques, Mechanical characterization of lightweight polymer mortar modified with cork granulates, Composites Science and Technology 64 (2004) 2197-2205.

DOI: 10.1016/j.compscitech.2004.03.006

Google Scholar

[27] D. Panesar and B. Shindman, The mechanical, transport and thermal properties of mortar and concrete containing waste cork, Cement & Concrete Composites 34 (2012) 982-992.

DOI: 10.1016/j.cemconcomp.2012.06.003

Google Scholar

[28] V.P. Freitas and P. Pinto, Vapour permeability of construction materials (in Portuguese) - Internal condensations. Technical Information NIT 002 - LFC 1998, Laboratório de Física das Construções, Porto, (1999).

Google Scholar

[29] NP EN 1097-3: 2002: Ensaios das propriedades mecânicas e físicas dos agregados - Parte 3: Determinação da baridade e do volume de vazios. (Ed. 2). Instituto Português da Qualidade, Lisboa, (2002).

Google Scholar

[30] EN 1015-11: 1999 (Ed. 1): Methods of test for mortar for masonry - Part 11: Determination of flexural and compressive strength of hardened mortar. Comité Européen de Normalisation, Brussels, (1999).

DOI: 10.3403/01905442

Google Scholar

[31] EN 1015-2: 1998: Methods of test for mortar for masonry - Part 2: Bulk sampling of mortars and preparation of test mortars. Comité Européen de Normalisation, Brussels, (1998).

DOI: 10.3403/01541476

Google Scholar

[32] EN 1015-18: Methods of test for mortar for masonry - Part 18: Determination of water absorption coefficient due to capillary action of hardened mortar. Comité Européen de Normalisation, Brussels, (2002).

DOI: 10.3403/02720093u

Google Scholar

[33] G. Cultrone, E. Sebastián and M. Ortega Huertas, Durability of masonry systems: A laboratory study, Construction and Building Materials 21 (2007) 40-51.

DOI: 10.1016/j.conbuildmat.2005.07.008

Google Scholar

[34] I. Flores-Colen, Methodology for assessing the performance of facades service from the perspective of predictive maintenance (in Portuguese). PhD Dissertation in Civil Engineering, Instituto Superior Técnico, (2009).

Google Scholar

[35] EN 1015-19: Methods of test for mortar for masonry - Part 19: Determination of water vapour permeability of hardened rendering and plastering mortars. Comité Européen de Normalisation, Brussels, (2004).

DOI: 10.3403/01541425

Google Scholar

[36] NP EN 1936: Natural stone test methods. Determination of real density and apparent density, and of total and open porosity (in Portuguese). Portuguese Institute for Quality, Lisbon, (2008).

DOI: 10.3403/30149240

Google Scholar

[37] EN 1015-10: Methods of test for masonry - Part 10: Determination of dry bulk density of hardened mortar. Comité Européen de Normalisation, Brussels, (1999).

DOI: 10.3403/01905430

Google Scholar

[38] IUPAC guidelines for Reporting Physisorption Data for Gas/Solid Systems, Pure Appl. Chem. 57 (1985) 603-619.

Google Scholar

[39] S.J. Gregg and K.S.W. Sing, Adsorption, surface area and porosity, Academic Press, London, (1982).

Google Scholar

[40] P.A. Webb, C. Orr, Analytical methods in fine particle technology, Micrometrics Instrument Corp: USA, (1997).

Google Scholar

[41] EN 998-1: Specification for mortar for masonry - Part 1: Rendering and plastering mortar. Comité Européen de Normalisation, Brussels, (2010).

DOI: 10.3403/30291085

Google Scholar