A comparative study on the thermal performance of mortars with different formulations
Yıl 2020,
Cilt: 38 Sayı: 1, 183 - 189, 27.03.2020
Nihat Kabay
Ahmet B. Kızılkanat
Öz
This paper comparatively analyze the mechanical and thermal performance of three different mortar mixes namely; ordinary Portland cement mortar, geopolymer mortar, and phase change material (PCM) incorporated geopolymer mortar. In geopolymer mortar ground pumice was used as the precursor material and combination of NaOH (Sodium hydroxide) and Na2SiO3 (Sodium silicate) was used as the activator. In PCM modified mortar mix, sand was substituted by PCM by 25% by volume. Compressive strength and thermal performance of the mortar mixes were determined at 7 days on cubic and prismatic samples. Test results showed that the compressive strength is dramatically reduced in geopolymer mortar and further reduction was observed with PCM inclusion. Thermal performance of the geopolymer mortar and PCM modified mortar are improved with reduced density. PCM inclusion provided the best thermal insulation property by keeping the internal temperature of the test cubicle cooler and warmer during the heating and cooling cycles and furthermore delays the temperature increase or decrease in the internal space during the cycles.
Kaynakça
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- [2] Meshgin P., Xi Y., Li Y., (2012) Utilization of phase change materials and rubber particles to improve thermal and mechanical properties of mortar, Construction and Building Materials 28, 713–721. doi:10.1016/j.conbuildmat.2011.10.039.
- [3] Cabeza L.F., Castellón C., Nogués M., Medrano M., Leppers R., Zubillaga O., (2007) Use of microencapsulated PCM in concrete walls for energy savings, Energy and Buildings 39, 113–119. doi:10.1016/j.enbuild.2006.03.030.
- [4] Sakulich A.R., Bentz D.P., (2012) Incorporation of phase change materials in cementitious systems via fine lightweight aggregate, Construction and Building Materials 35, 483–490. doi:10.1016/j.conbuildmat.2012.04.042.
- [5] Shadnia R., Zhang L., Li P., (2015) Experimental study of geopolymer mortar with incorporated PCM, Construction and Building Materials 84, 95–102. doi:10.1016/j.conbuildmat.2015.03.066.
- [6] Zamalloa A., Embil M.J., Zubillaga O., Zuñiga J., Cano F., (2008) PCM containing indoor plaster for thermal comfort and energy saving in buildings, Indoor Air 17–22.
- [7] Turner L.K., Collins F.G., (2013) Carbon dioxide equivalent (CO2-e) emissions: A comparison between geopolymer and OPC cement concrete, Construction and Building Materials 43, 125–130. doi:10.1016/j.conbuildmat.2013.01.023.
- [8] Davidovits J., (1991) Geopolymers - Inorganic polymeric new materials, Journal of Thermal Analysis 37, 1633–1656. doi:10.1007/BF01912193.
- [9] Van Deventer J.S.J., Provis J.L., Duxson P., Brice D.G., (2010) Chemical research and climate change as drivers in the commercial adoption of alkali activated materials, Waste and Biomass Valorization 1, 145–155. doi:10.1007/s12649-010-9015-9.
- [10] ASTM C109 (2000), Standard Test Method for Compressive Strength of Hydraulic Cement Mortars, ASTM Int. West Conshohocken.
- [11] Hassan A., Mourad A.H.I., Rashid Y., Ismail N., Laghari M.S., (2019) Thermal and structural performance of geopolymer concrete containing phase change material encapsulated in expanded clay, Energy and Buildings 191, 72-81. doi:10.1016/j.enbuild.2019.03.005.
Yıl 2020,
Cilt: 38 Sayı: 1, 183 - 189, 27.03.2020
Nihat Kabay
Ahmet B. Kızılkanat
Kaynakça
- [1] Zhang Z., Shi G., Wang G., Fang X., Liu X., (2013) Thermal energy storage cement mortar containing n-octadecane/expanded graphite composite phase change material, Renewable Energy 50, 670–675. doi:10.1016/j.renene.2012.08.024.
- [2] Meshgin P., Xi Y., Li Y., (2012) Utilization of phase change materials and rubber particles to improve thermal and mechanical properties of mortar, Construction and Building Materials 28, 713–721. doi:10.1016/j.conbuildmat.2011.10.039.
- [3] Cabeza L.F., Castellón C., Nogués M., Medrano M., Leppers R., Zubillaga O., (2007) Use of microencapsulated PCM in concrete walls for energy savings, Energy and Buildings 39, 113–119. doi:10.1016/j.enbuild.2006.03.030.
- [4] Sakulich A.R., Bentz D.P., (2012) Incorporation of phase change materials in cementitious systems via fine lightweight aggregate, Construction and Building Materials 35, 483–490. doi:10.1016/j.conbuildmat.2012.04.042.
- [5] Shadnia R., Zhang L., Li P., (2015) Experimental study of geopolymer mortar with incorporated PCM, Construction and Building Materials 84, 95–102. doi:10.1016/j.conbuildmat.2015.03.066.
- [6] Zamalloa A., Embil M.J., Zubillaga O., Zuñiga J., Cano F., (2008) PCM containing indoor plaster for thermal comfort and energy saving in buildings, Indoor Air 17–22.
- [7] Turner L.K., Collins F.G., (2013) Carbon dioxide equivalent (CO2-e) emissions: A comparison between geopolymer and OPC cement concrete, Construction and Building Materials 43, 125–130. doi:10.1016/j.conbuildmat.2013.01.023.
- [8] Davidovits J., (1991) Geopolymers - Inorganic polymeric new materials, Journal of Thermal Analysis 37, 1633–1656. doi:10.1007/BF01912193.
- [9] Van Deventer J.S.J., Provis J.L., Duxson P., Brice D.G., (2010) Chemical research and climate change as drivers in the commercial adoption of alkali activated materials, Waste and Biomass Valorization 1, 145–155. doi:10.1007/s12649-010-9015-9.
- [10] ASTM C109 (2000), Standard Test Method for Compressive Strength of Hydraulic Cement Mortars, ASTM Int. West Conshohocken.
- [11] Hassan A., Mourad A.H.I., Rashid Y., Ismail N., Laghari M.S., (2019) Thermal and structural performance of geopolymer concrete containing phase change material encapsulated in expanded clay, Energy and Buildings 191, 72-81. doi:10.1016/j.enbuild.2019.03.005.