Influence of fresh concrete pressure on cover porosity investigated by single-sided proton nuclear magnetic resonance

In this study, single-sided proton nuclear magnetic resonance ( 1 H NMR) was used to quantify the porosity of the concrete cover. Laboratory concrete samples were prepared with different formwork surfaces as well as varying fresh concrete pressures. Furthermore, to separate the influence of aggregates on porosity, hardened cement paste and mortar samples of otherwise similar composition were prepared. All samples were tested with single-sided 1...