Study of a Cement Mortar with Incorporation of PCM Microcapsules
The incorporation of phase change materials (PCM) in construction materials contributes to the reduction of the energy consummation in the buildings. The needs of heating and cooling systems can be reduced with the adequate use of PCM. The benefits to the comfort inside buildings appear during the change of phase of the PCM. The transferences of energy that occur during the transitions solid-liquid and liquid-solid are generally the most used to help the acclimatization of the buildings. For that reason the PCM must be microencapsulated. The exterior of the microcapsules is made with a polymer. This study presents the mechanical properties of a cement mortar with the incorporation of 20％, 30％ and 40％ of microcapsules of PCM. The aim was to find the maximum percentage to be incorporated in a cement mortar to use in the interior coating of walls. With the incorporation of the PCM microcapsules the strength class of the reference mortar (0％) must be maintained. The results of the first series of tests showed an important decrease of the mechanical strengths and it was not possible to maintain the strength class of the mortar with PCM microcapsules. In the second series of tests the composition of the mortar was changed by the addition of 10％ of cement CEM II 52,5. The results showed that incorporations of 20％ and 30％ of PCM microcapsules decrease the mechanical strengths but the values obtained are still inside the requisites of the European standard. The incorporation of 20 ％ of PCM microcapsules was possible maintaining the same strength class of the reference mortar.
microcapsules of PCM cement mortar energy efficiency
Monica M.Felix Jose B.Aguiar
Department of Civil Engineering, University of Minho Guimaraes 4800-058, Portugal
国际会议
6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)
上海
英文
77-81
2009-10-29（万方平台首次上网日期，不代表论文的发表时间）