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Geleneksel betonlara oranla hızlı üretimi, düşük maliyeti ve dayanıklılığının iyi olması silindirle sıkıştırılmış betonların (SSB) son zamanlarda dünyada yaygın olarak tercih edilmesine neden olmuştur. Söz konusu SSB, fabrikalar, petrol istasyonları, hava limanları, çeşitli endüstriyel zeminler, yollar ve barajlar gibi birçok alanda kullanılmaktadır. Normal betona kıyasla çok farklı üretim tekniğine sahip SSB'lerin karışım oranları çeşitli tasarım yöntemlerine göre belirlenmekte ve en çok tercih edilen yöntem olarak maksimum yoğunluk yöntemi dikkat çekmektedir. Bu çalışmada, SSB'lerin tasarım yöntemlerinden genel olarak bahsedilerek, maksimum yoğunluk yöntemi detaylı olarak açıklanmıştır. Ayrıca maksimum yoğunluk yöntemi ile tasarlanan SSB'ler ile ilgili çalışmalar özetlenerek bundan sonra yapılacak araştırmalar için önerilerde bulunulmuştur. Roller 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.

In this research, the effects of size and shape on compressive and splitting tensile strength of fibrous and non-fibrous concrete specimens with different characteristic strength were investigated. With this aim, both fibrous and non-fibrous 10 different concrete mixtures with 0.3, 0.4, 0.5, 0.6 and 0. 7 Water/Cement ratio were prepared. In the fibrous mixture specimens, the total amount of steel fibers to 1% by total volume. In the entire specimens, 42.5 R type Portland cement were used as bonding elements while crushed lime stones in 3 sizes were added to the mixtures. Furthermore, to evaluate the influence of size and shapes over specimens’ strength, for each concrete mixtures two 10 cm and 15 cm cubic specimen beside two 10×20 cm and 15×30 cm cylindrical specimens were prepared as well. The prepared specimens were subjected to compressive and splitting tensile tests. The results showed that, regardless of the fiber amount and specimens’ shapes, the decrease in specimens’ size resulted in higher strength. But in the high ratio of Water/Cement and fibrous mixtures, the mentioned behavior was not observed.