This article describes the change in the basic properties of standard concrete subjected to 12 h freeze–thaw cycles. Basic properties considered are resistance to compression and other parameters describing concrete behavior in axial compression with axial and transverse expansion. Although 300 freeze...
These spectra can be interpreted using a model that considers the interactions between the nitrogen lone pair and the carbonyl group. The existence of an equilibrium between the conformers caused by the different orientations of the nitrogen lone pair with respect to the carbonyl group can be ...
Knowledge, Theory of HistoryKnowledge, Theory of HistoryConnaissance, Théorie de la HistoireConnaissance, Théorie de la HistoireÉpistémologie HistoireSciences PhilosophieThis article has no ...