TY - GEN
T1 - Fracture and microstructural studies on normal and high strength concretes with different types of aggregates
AU - Sengul, Ozkan
AU - Sengul, Cengiz
AU - Keskin, Gulden
AU - Akkaya, Yilmaz
AU - Tasdemir, Canan
AU - Tasdemir, Mehmet A.
PY - 2013
Y1 - 2013
N2 - Effects of aggregate type on the mechanical behavior of both normal- and high-strength concretes were investigated under bending and mechanical properties under compression. Basalt, sandstone, Eocene and Devonian crushed limestone coarse aggregates were used in the concrete mixtures. For each coarse aggregate type, normal and high strength concretes were made with the same Portland cement and natural sand. In each concrete class, effective water/cement ratio, grading of aggregate, maximum particle size, and cement content were kept constant. For better understanding of the crack initiation and propagation in concretes with different coarse aggregates, a microstructural examination using optical fluorescence and SEM studies are also presented. The results obtained help to explain how the coarse aggregate type and strength of concrete affect the fracture energy in bending. Good agreement was found between experiments and a three phase composite material model previously proposed.
AB - Effects of aggregate type on the mechanical behavior of both normal- and high-strength concretes were investigated under bending and mechanical properties under compression. Basalt, sandstone, Eocene and Devonian crushed limestone coarse aggregates were used in the concrete mixtures. For each coarse aggregate type, normal and high strength concretes were made with the same Portland cement and natural sand. In each concrete class, effective water/cement ratio, grading of aggregate, maximum particle size, and cement content were kept constant. For better understanding of the crack initiation and propagation in concretes with different coarse aggregates, a microstructural examination using optical fluorescence and SEM studies are also presented. The results obtained help to explain how the coarse aggregate type and strength of concrete affect the fracture energy in bending. Good agreement was found between experiments and a three phase composite material model previously proposed.
KW - Aggregate type
KW - Fracture energy
KW - Mechanical behavior
KW - Microstructural examination
UR - http://www.scopus.com/inward/record.url?scp=84879970471&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84879970471
SN - 9788494100413
T3 - Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
SP - 714
EP - 725
BT - Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
T2 - 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS 2013
Y2 - 11 March 2013 through 14 March 2013
ER -