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Research Articles | Challenge Journal of Structural Mechanics

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Investigation of the effects of re-curing on mechanical properties of basalt-polypropylene hybrid fiber concretes after exposure to high temperature

Yunus Urtekin, Zinnur Çelik

Challenge Journal of Structural Mechanics (2025) 11(1) 14-23

Fiber reinforced concretes have attracted significant attention in recent decades due to their superior flexural and toughness properties compared to traditional concrete in civil engineering structures. In addition, cementitious materials can undergo signific...
Impact of iron powder and blast furnace slag on the mechanical properties of polymer concrete: An experimental and hyperparameter-tuned ANN-based study

Arif Ulu, Ali Ikbal Tutar, Mohsen Shams, Ferit Cakir

Challenge Journal of Structural Mechanics (2024) 10(4) 149-158

Polymer-based materials have become increasingly used in concrete production and various engineering applications due to their versatile properties. In particular, polymer concrete (PC) has become a preferred reinforcement material in the construction industry...
Long-term durability of red mud-modified cement mortars: Effects of high temperature and freeze-thaw cycles

Emrah Turan, Ibrahim A. Alameri, Meral Oltulu

Challenge Journal of Structural Mechanics (2025) 11(3) 116-127

The use of industrial by-products such as red mud in cementitious materials addresses sustainability by reducing environmental impact and improving performance. As a hazardous waste from aluminium production, red mud offers a promising solution for waste manag...
Nonlinear in-plane response of 3D-printed concrete walls with varied infill patterns: Experimental mix design and numerical structural assessment

İsmail Hakkı Tarhan, Yeşim Tarhan

Challenge Journal of Structural Mechanics (2025) 11(3) 160-173

This study investigates the nonlinear in-plane structural behavior of 3D-printed concrete wall elements with two representative internal infill patterns ‒ lattice (L) and triangular (T) ‒ using finite element modeling informed by experimentally derived materia...
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 ...