ABSTRACT
The use of additives in RCC is a relatively new approach. In the Brazilian RCC dams the researches and uses started around 1996. Several tests were made in the period of 1996–1999 including the test in laboratory and field at Salto Caxias Dam(Moser et al.1999), and the test in laboratory and field at Dona Francisca Dam, around 1999–2001. This approach was adopted during the construction of Dona Francisca RCC Dam, as the first real case were the plasticizer-retarder admixtures were used in the RCC in a large scale and a continuous production. This paper discusses the economical benefits and quality and uniformity improvements obtained.
