4.7 Article

Effects of paraffin additives, as phase change materials, on the behavior of a traditional lime mortar

Journal

CONSTRUCTION AND BUILDING MATERIALS
Volume 361, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.129734

Keywords

Phase change material; Lime mortar; Durability; Physical properties; Heat flux

Funding

  1. Autonomous Region of Madrid?s Top Heritage Program
  2. [S2018/NMT-4372]

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This study evaluates the inclusion of phase change materials (PCMs) in porous building materials to improve their thermal behavior and assesses its impact on their physical-mechanical and durability properties.
This study refers to the inclusion of phase change materials (PCMs) in porous building materials as an alternative means of improving their thermal behavior, assessing the changes caused in their physical-mechanical and durability properties. Specifically, an organic paraffin wax was selected for direct incorporation into lime mortars using different concentrations by weight. The results show that PCMs improve the thermal properties of the mortar while reducing its accessible porosity. This increases the mortars' resistance to water and soluble salts. However, excessive PCM content causes stresses within the mortar that can jeopardize its structure.

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