Browsing by Author "Faqiri, Zia Ahmad"
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Item Effect of water curing temperature on compressive strength development and water absorption capacity of mortar mixtures(Yıldız Teknik Üniversitesi, 2020-03) Özen, Süleyman; Mardani, Ali; Altun, Muhammet Gökhan; Faqiri, Zia Ahmad; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; AAJ-6415-2021In this study, the effect of different curing temperature processes on the 1, 3, 7 and 28-day compressive strength and 28-day water absorption ratios of mortar mixtures were investigated. All mortar mixtures were prepared according to ASTM C109. The water/cement ratio, sand/binder ratio and flow values of mortar mixture were kept constant as 0.485, 2.75 and 25 +/- 2 cm, respectively. Polycarboxylate ether-based high range water reducing admixture was used for providing desired flow value. All mortar mixtures were cured at fresh state in a curing room under the same conditions (Temperature of 20 degrees C and Relative humanity (RH) of 95%) during 24 hours from casting. Then, specimens were subjected to 6 different water-curing conditions. According to test results, the 3-day compressive strength of mixtures cured in water having a temperature of 40 degrees C was higher than that of mixtures cured at 20 degrees C in water. At early ages, the high curing temperature negatively affected the 7 and 28-day compressive strength of mixtures. Specimens cured in water at 20 degrees C and 40 degrees C had the highest and lowest 28-day compressive strengths, respectively. Different curing conditions had no significant effect on the 28-day water absorption ratios of mortar mixtures.Publication Review of research on designing methods and properties of roller compacted concrete mixtures(Pamukkale Üniversitesi, 2020-01-01) Mardani-Ağhabağlou, Ali; Bayqra, Sultan Hüsein; Özen, Süleyman; Altun, Muhammet Gökhan; Faqiri, Zia Ahmad; Ramyar, Kambiz; MARDANİ, ALİ; Bayqra, Sultan Hüsein; Altun, Muhammet Gökhan; Faqiri, Zia Ahmad; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; 0000-0003-2200-2691; AAJ-6415-2021; C-7860-2015; CDR-7456-2022; CBF-4437-2022; COI-3623-2022Roller compacted concrete (RCC) has been widely preferred in the world recently due to its rapid production rate, low cost and good durability compared to those of the traditional concrete. Having different production techniques from conventional concrete, RCC is used in many areas such as factories, oil stations, airports, industrial floor coverings, roads and dams. There are several methods for the proportioning of RCC mixtures, among which maximum density method is the most preferred one. In this study, the methods of designing of RCC mixtures are explained with an emphasis on the maximum density method. In addition, the previous studies on the RCC mixtures designed with the maximum density method are reviewed and suggestions are made for the future researches.