Advanced Lime Mortars for Historical Architectural Structures

Pringopoulos, Theodoros A.; Thomoglou, Athanasia K.; Fantidis, Jacob G.; Thysiadou, Anna A.; Metaxa, Zoi S.

doi:10.3390/engproc2024070058

International Conference on Electronics, Engineering Physics and Earth Science (EEPES 2024) 2024

DOI: 10.3390/engproc2024070058

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Advanced Lime Mortars for Historical Architectural Structures

Theodoros A. Pringopoulos,

Athanasia K. Thomoglou,

Jacob G. Fantidis

et al.

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2024

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Compositional Design of New Environmentally Friendly Geopolymer Mortar Based on Kaolin and Granite Residues

de Brito,

Rodrigues,

Fernandes

et al. 2024

Materials

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The use of industrial residues in civil construction is an exciting alternative to mitigate environmental impacts and promote the circular economy. This work developed new compositions of geopolymer mortars activated by NaOH from fine kaolin residue (RCF), coarse kaolin residue (RCG) and granite (RG). All residues were benefited and characterized by chemical analysis (X-ray fluorescence), mineralogical phases (X-ray diffraction) and granulometry (laser granulometry). Additionally, the RCF was calcined at 650 °C for 2 h (RCFC) to produce metakaolin, which is the starting point for the geopolymer reaction. A mixture of experimental designs was accomplished to evaluate the water/binder factor (Wexp (%)) necessary for new geopolymer mortar compositions to reach the consistency index (260 mm, ASTM C1437-15) and the effect of different curing conditions on the simple compressive strength (SCS). The geopolymeric compositions with RCFCs, pre-cured at room temperature, exhibited the highest Wexp% values (>40%) and significant SCS, with curing conditions A and B reaching 6 MPa and 7 MPa, respectively. Such behavior can be explained by the fact that the pre-curing step at room temperature keeps the system humidity relatively high, favoring the dissolution of Si4+ and Al3+ ions and, therefore, increasing the Si/Al ratio, which positively influences the geopolymerization kinetics reaction.

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Compositional Design of New Environmentally Friendly Geopolymer Mortar Based on Kaolin and Granite Residues

de Brito,

Rodrigues,

Fernandes

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

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Advanced Lime Mortars for Historical Architectural Structures

Cited by 1 publication

References 24 publications

Compositional Design of New Environmentally Friendly Geopolymer Mortar Based on Kaolin and Granite Residues

Compositional Design of New Environmentally Friendly Geopolymer Mortar Based on Kaolin and Granite Residues

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