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• Determining datum temperature and apparent activation energy: an approach for mineral admixtures incorporated cementitious systems
  Muhammet Atasever, Mustafa Tokyay
  Challenge Journal of Concrete Research Letters (2024) 15(4) 142-149
  The maturity method is used to predict the strength of concrete by monitoring its temperature history. Accuracy of maturity method relies on the dependable determination of the datum temperature and the apparent activation energy. The current study introduces ...
• A different approach for green concrete production: Determination of the effect of e-waste and waste rubber powder on durability properties of concrete
  H. Alperen Bulut
  Challenge Journal of Concrete Research Letters (2024) 15(3) 69-81
  This study was carried out to present a different approach to green concrete production by utilizing electronic waste (e-waste) and waste rubber powders in order to provide a solution to both the cost and carbon footprint problems arising from the rapid consum...
• Effects of dry particle coating with nano- and microparticles on early compressive strength of portland cement pastes
  Hediye Yorulmaz, Sümeyye Özuzun, Burak Uzal, Serhan İlkentapar, Uğur Durak, Okan Karahan, Cengiz Duran Atiş
  Challenge Journal of Concrete Research Letters (2021) 12(4) 125-130
  It is known that nano-and microparticles have been very popular in recent years since their advantages. However, due to the very small size of such materials, they have very high tendency to agglomeration particularly for nanoparticles. Therefore, it is critic...
• Using the efflorescence mechanism of portland cement to obtain a shiny calcium carbonate surface
  Juan Carlos Hernandez Palacios, Imelda Olivas Armendariz, Juan Francisco Hernandez Paz, Pedro Perez Rodriguez, Jose Luis Sandoval Granados, Hortensia Reyes Blas, Lorena Rivera Rios, Claudia Alejandra Rodriguez Gonzalez
  Challenge Journal of Concrete Research Letters (2026) 17(1) 30-40
  This study presents a novel curing strategy to produce a smooth and shiny surface on Portland cement paste by controlling efflorescence. The proposed methodology consists of curing fresh cement paste in contact with a smooth, polystyrene mold, which modifies t...
• Experimental study on the rotation capacity of bolted and welded beam-column connection using cold-formed steel sections
  Mahyar Maali, Merve Sağıroğlu, Mahmut Kılıç, Abdulkadir Cüneyt Aydın
  Challenge Journal of Structural Mechanics (2022) 8(4) 133-140
  This paper investigates new bolted and welded beam-to-column connection types on the cold-formed steel sections (CFS) and their behaviors determined using full-scale experiments. This study aimed to analyze the influence of weld/bolt connections based on CFS p...