Paper by RIBEIRO VALE from ISCR 8th 1998 Lisbon Portugal
The scope of this work is the behaviour under abrasion of different concrete (RCC) made with limestone, schist and granite aggregates. Binder contents (cement and fly ash) ranging from 90 kg/rn 3 to 190 kg/rn3 were tested. Small concrete slabs 60x60x40 mm were cut from 150000 mm cylinders prepared according to ASTM C 1176- 91. At 90 days the abrasion tests were carried out using an Amsier-! affon machine. The results show that there is a big influence of the aggregate type on the abrasion behaviour, but similar abrasion resistance was obtained for different binder contents. The work also presents a comparison between RCC and conventional concrete made with limestone aggregates.