@article{article2136,
  title = {Enhancing geopolymer mortars: The impact of Algerian metakaolin substitution on mechanical performance and sustainability},
  author = {HEBBACHE, K. and DOUADİ, A. and HAMDİ, O.M. and BOUTLİKHT, M. and MESSAİ, A. and KHİTAS, N.E.H. and BELEBCHOUCHE, C.},
  journal = {Sigma Journal of Engineering and Natural Sciences},
  year = {2026},
  volume = {44},
  pages = {2937-2951},
  doi = {10.14744/sigma.2026.2136}
}