RT Journal Article
T1 Determination of the extreme reduction of concrete strength due to Acid Mine Drainage by laboratory tests on specimens located in a real environment.
A1 Dávila Martín, José Miguel
A1 Miguel Sarmiento, Aguasanta
A1 Fortes Garrido, Juan Carlos
A1 Grande Gil, José Antonio
AB The reduction in durability due to the drainage of acidic mine water is a serious problem thatcauses the deterioration of the structural materials located in this type of environment,spreading throughout all the sulphide mining operations of the world, and in particular, in theIberian Pyritic Belt where there are a large number of abandoned mines.In this research the evolution over time of the mechanical characteristics of concrete affectedby acid mine drainage has been studied, as well as some properties of concrete that are closely2related to durability. Several samples of concrete (40 MPa of compressive strength, w/c ratioof 0.45, 435 kg/m3 of sulphate resistant cement), were subjected to a real acidic environment,allowing the harmful effects of erosion and the action of bacteria to be taken into account. Thesamples were subjected to this acidic environment for six months, five of them beingextracted every two months.From the two types of tests carried out, one destructive and the other non-destructive, theconcrete strength was determined, as well as an estimate of its quality, porosity and airpermeability. Through this process, it has been possible to obtain an approximate evolution ofthe deterioration of the concrete mechanical properties.A significant deterioration of concrete has been confirmed, with a considerable loss of thesurface cement paste and fine aggregate, together with a substantial reduction in the concretestrength (over 40% in just six months, this value being much higher than obtained in previousinvestigations carried out by other researchers in the synthetic environment) and an increasein porosity, all with a very rapid evolution over time.
PB Elsevier
SN 0950-0618
YR 2021
FD 2021-02
LK http://hdl.handle.net/10272/19721
UL http://hdl.handle.net/10272/19721
LA eng
NO Dávila Martín, J. M., Miguel Sarmiento, A., Fortes Garrido, J. C. ... Grande Gil, J. A. (2021). Determination of the extreme reduction of concrete strength due to acid mine drainage by laboratory tests on specimens located in a real environment. Construction and Building Materials, 269, 121817. DOI: https://doi.org/10.1016/j.conbuildmat.2020.121817
NO We  appreciate the collaboration of the technicians from the concrete laboratory of  the Higher Technical  School  of  Engineering  (University  of  Huelva)  for  their  invaluable  work  and knowledge. This  research  did  not  receive  any  specific  grant  from  funding  agencies in   the  public, commercial, or not-for-profit sectors.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026