@article{01K185MV59K3ZQSG4D9QHGRJMY,
  abstract     = {{Porous building materials, such as lime mortars, play a crucial role in both heritage buildings and modern
construction due to their breathability, compatibility with historic structures, and moisture transport properties.
However, salt-induced decay remains a major challenge, necessitating research on prevention and mitigation of
salt crystallization damage. In this research, the use of mixed-in crystallization inhibitors on the performance of
lime mortars against salt damage is evaluated. For this task, accelerated salt crystallization tests were performed
at the macro-, meso- and micro-scale on lime mortars with mixed-in crystallization inhibitors (a phosphonate and
two polyacrylates) dosed in different amounts. Mechanical and porosity tests showed that the additives increased
the mortar strength while increasing their porosity (for pore sizes above 50 µm), except for mortars with a low
molecular weight polyacrylate dosed at the highest tested concentration (1000 ppm). This material strengthening
was likely given by the incorporation of organic additives as inter- and intra-crystalline occlusions in the CaCO3
crystals formed upon carbonation of Ca(OH)2. Salt crystallization tests confirmed the successful functionalization
of the lime mortar substrate through additive incorporation, promoting template-induced crystallization of large
euhedral mirabilite crystals in low quantities at low supersaturation levels. This process lowered the effective
crystallization stress within the mortars, mitigating damage, especially on mortars with the highest additive
dosage. These findings highlight a promising strategy for designing functional building materials with enhanced
durability against salt crystallization.}},
  articleno    = {{142603}},
  author       = {{Valdez Madrid, Dulce Elizabeth and Rodriguez-Navarro, Carlos and Winardhi, Chandra and De Belie, Nele and Cnudde, Veerle}},
  issn         = {{0950-0618}},
  journal      = {{CONSTRUCTION AND BUILDING MATERIALS}},
  keywords     = {{Lime mortar,Accelerated salt crystallization,Crystallization inhibitors,Sodium sulfate,Aminotris(methylene phosphonic acid) (ATMP),Poly(acrylic acid sodium salt) (PAA),POLY(ACRYLIC ACID),POROUS MATERIALS,CRYSTAL-GROWTH,CRYSTALLIZATION,PHOSPHONATES,ADSORPTION,INHIBITOR,STRESS,WATER}},
  language     = {{eng}},
  pages        = {{15}},
  title        = {{Controlling salt weathering of lime mortars by mixed-in additives : a multi-scale analysis}},
  url          = {{http://doi.org/10.1016/j.conbuildmat.2025.142603}},
  volume       = {{490}},
  year         = {{2025}},
}

Altmetric

View in Altmetric

Web of Science

Times cited: