Deterioration of Concrete in Fertilizer Factories

Effect of Hydrocarbon Solutions on Polymer Concrete

“…Figure (3) summarize the results of splitting tensile strength values for polyester resin concrete at various periods of immersion in oil products relative to reference concrete which left in air. Results demonstrate that the splitting tensile strength shows a considerable increase at all testing periods for specimens cured in air and this increasing may be because of the formulation of three-dimensional networks of polymer molecules through the concrete increases the binder system due to good bond characteristics of the polymer, Or the partial filling of pores with polymer which reduces the porosity, and hence increases the strength [10].On the other hand when the specimens were exposed to oil products they showed decrease in splitting tensile strength values during 90 days of exposure that may be due to the deterioration of concrete exposed to oil products and the effect of bond between aggregate and polyester resin due to increase in micro cracks in the microstructure of concrete specimens [11].Figure (4) shows the specimens after inspection.…”

Effects of potential deleterious chemical compounds on soil stabilisation

“…o Azote Les réactions entre certains sels d'ammonium et les bétons sont reconnues depuis longtemps comme potentiellement agressifs (Lea, 1965 ;Mohan et Rai, 1978). Les détériorations engendrées par les composés azotés conduisent à une fragilisation des structures en béton et au développement de fissures (Mbessa et Péra, 2001 o Phosphore…”