and the interfacial transition zone. In a high-strength concrete, however, to the low water/binder ratio and perhaps of the silica strength of the mortar and the intetlacial zone can be sufficiently to involve the aggregates in the fracture processes. Since…
and the interfacial transition zone. In a high-strength concrete, however, to the low water/binder ratio and perhaps of the silica strength of the mortar and the intetlacial zone can be sufficiently to involve the aggregates in the fracture processes. Since the ...,._._ . ....,,_Jl,:CLA.I. mortar and the trans1t10n zone increase water/binder ratio the involvement of the aggregates esses increases with decreasing water/binder Tasdemir et The volume fractions of the mortar, the aggregates and aggregates in concrete are approximately 30%, 35% and 35% tively, i.e. the volume fraction of the coarse aggregates is same as that of mortar. Since, a high-strength concrete coarse aggregates are involved in the fracture processes as rounding mortar the fracture behaviour of aggregates and on the fracture mechanical properties of concrete should not be .ll-""-'.l"..ll'-''-'"''"'''-" when designing high-strength concrete. This paper presents results of tests which were conducted to investigate the effects of the geologically crushed coarse gates, particle size between 8 and 16 mm, on strength, u ... u __ .__,_ .. ...,._,._, fracture energy of the high-strength concrete. 2 Method Concrete compositions concrete mixes which were used in the investigation differ gard to the water/binder ratio, W /B ratio, the silica the type of the coarse aggregates. the ratios which were used are shown in Table 1. Table 1. Binder Ordina ortland cement, (OPC) 0.30 0.40 0.55 OPC and silica fume (S), (OPCS) 0.