Deterioration of fly ash concrete, high performance concrete, and high performance hybrid fibers reinforced expansive concrete(HPHFREC) exposed to 5% magnesium sulfate solution is investigated. Two corrosion regimes were employed: natural immersion and dry-wet cycle. From the experimental results, it is found that erosion of concretes under combined action of magnesium sulfate and dry-wet cycles is more severe than that in single magnesium sulfate corrosion, and the dry-wet cycle accelerates the deterioration of concretes in magnesium sulfate environment. In early exposure period, concrete has a structure reinforced phase during which dynamic modulus of elasticity and mass of concretes increase steadily. Among the four types of concretes tested, HPHFREC gets the best corrosion resistance and surface peeling resistance in magnesium sulfate environment.
Deterioration of High Performance Hybrid Fibers Reinforced Expansive Concrete Exposed to Magnesium Sulfate Solution
Second International Conference on Transportation Engineering ; 2009 ; Southwest Jiaotong University, Chengdu, China
2009-07-29
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Highways and roads , Information technology (IT) , Transportation management , Reinforced concrete , Sulfates , Construction , Freight transportation , China , Water transportation , Air transportation , Rail transportation , Optimization , Deterioration , Public transportation , Dewatering , Traffic management
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