This study examines the mechanical and physical performance of lightweight concretes incorporating acidic pumice aggregate, with a particular focus on their behavior under thermal exposure. Pumice sourced from the Bitlis-Tatvan region was used as a partial replacement for limestone aggregate at volumetric substitution levels of 50%, 60%, and 70% (designated LC50, LC60, and LC70, respectively), alongside a conventional control mix (NC). Experimental investigations included flexural and compressive strength tests, capillary water absorption measurements, and mass loss assessments at elevated temperatures (100 °C, 200 °C, and 300 °C). The results indicate that increasing pumice content leads to a significant reduction in mechanical strength, as evidenced by a strong negative correlation (e.g., −0.994 for compressive strength), and results in increased water absorption due to the higher porosity of pumice. Thermal exposure caused more pronounced weight loss in pumice-rich mixtures, primarily attributable to moisture evaporation and the formation of surface voids, particularly in LC60 and LC70 specimens. Although the incorporation of pumice effectively reduces the unit weight of concrete, it compromises both strength and durability, highlighting a critical trade-off between weight reduction and structural performance. Future studies are recommended to quantitatively assess the relationship between compressive and flexural strengths to address current limitations. Additionally, advanced microstructural analyses (e.g., SEM, XRD), fire resistance evaluations at higher temperatures, and the development of hybrid mixes incorporating supplementary cementitious materials (SCMs) should be further explored.

Bu çalışmada, dünya genelinde uygulanmakta olan bina sertifikalandırma sistemleri ile yeni bir sertifikalandırma sistemi olan Biyoharmolojik Uygunluk Değerlendirme sistemi ele alınmıştır. Bu kapsamda sertifika sistemleri ve öne çıkan özellikleri açıklanmıştır. Son 25 yılda çok sayıda yöntemin geliştirilmiş olduğu anlaşılmıştır. Bu sistemlerin önemli bir kısmının sürdürülebilir ve yeşil bina özelliklerini konu edildiği görülmüştür. Mevcut yöntemlere alternatif yeni bir sistemin özellikleri ve uygulama adımlarına ilişkin esaslara yer verilmiştir. Sertifikalandırma çalışmaları yapan veya yapacak olan taraflara yardımcı olması amacıyla metin içerisinde açıklayıcı örnek bir uygulamaya yer verilmiştir. Ayrıca Biyoharmolojik Uygunluk Değerlendirme Yöntemi’nin mevcut sistemlerden farklılığı ortaya konulmuştur. Sonuç olarak; önerilen sistemin binaların kullanıcı kimliği ve kullanım amacı açısından bütün bina tipleri için kullanılabilir olduğu anlaşılmıştır

Concrete is a composite construction material made primarily of aggregate, cement, and water. Fresh concrete must have certain features. These are shown in durability, workability, compressive strength, flexural strength, shrinkage, impact resistance, wear, and so forth. In this study, compressive strength, erosion, and attrition behavior of concrete with silica fume additive produced by injection method were researched. Concrete with high occupancy is produced with injection. Use of more than 10% silica fume increases the fresh concrete’s need for mixed water significantly. It was observed that as the ratio of silica fume additive increases, concrete becomes stronger against compression, erosion, and attrition.

This study investigates the engineering characteristics of a newly commissioned higher education building through the Bioharmological Conformity Assessment (BCA) method, specifically using the 2020vEB version. The BCA is a novel evaluation approach that assesses whether a building aligns with the identity of its users and its intended function. The engineering attributes of the structure were assessed across 12 core criteria, encompassing a total of 600 individual parameters. Findings from the BCA inspection indicate that the newly completed building falls into the category of “Near-Standard Building/Minor Modifications Required.” The BCA score was calculated as 398.73, corresponding to a deficiency rate of 25.50%. Notably, significant shortcomings were observed in categories such as user identity and intended use, Physical Characteristics of the Space, and Ecological and Seismological Suitability. Consequently, targeted improvements are necessary to align the building with bioharmological principles, requiring only minor adjustments to rectify the identified deficiencies.

This study aims to examine and present the general results of the urban transformation studies methods and techniques applied in the province of Elazig after the Sivrice earthquake. The study used a descriptive approach method within the scope of qualitative research. Urban transformation project data applied in risky areas were obtained from technical analysis and interviews. The research covers the results of urban transformation in risky areas of Elazig province. Cleaning, renewal, and post-disaster transformation methods were used in urban transformation works in risky areas. The general situation after the earthquake has revealed some weaknesses in selecting methods and techniques for urban transformation applications. As a result of urban transformation practices, bioharmological buildings that are more compatible with the current earthquake legislation, with a stronger carrier system, more comfortable, and in terms of user identity and purpose of use, are offered to the use of beneficiaries.