Abstract: The alkali-aggregate reaction (AAR) has been detected in the spillway driftway of the Furnas Hydroelectric Power Plant, Brazil, which was built in 1963. To investigate the properties of this concrete, several cores were ...

Abstract: Expansive reactions such as delayed ettringite formation (DEF) can lead to mechanical and microstructural changes in concrete, resulting in considerable damage to the structures. DEF usually occurs in concrete that has ...

Abstract: Some researchers suggest the use of residual rice-husk ash (RHA) finely divided as a mineral addition to cement, despite the reduced content of amorphous silica compared to RHA produced by controlled burning. This article ...