Influence of Curing Condition on the Mechanical Properties and Durability of High Strength Concrete

The influence of initial curing conditions on the mechanical properties and durability of high strength concrete was investigated. In this work, two different curing conditions (steam curing and standard curing) were applied to the specimens with identical mix designs. Some of the specimens were kept in standard curing condition; the rest were stored in standard curing condition after 10 hours of steam curing. Compressive strength, splitting tensile strength, elastic modulus, shrinkage, freeze-thaw resistance, carbonation, and sulfate resistance of concrete were determined. X-ray diffractometer (XRD), mercury intrusion porosimetry (MIP), and scanning electron microscopy (SEM) image analysis were adopted to measure microstructure evaluation under different curing conditions. Results indicate that, compared with standard curing, steam curing increases the degree of cement hydration, the average diameter of pores, and the amount of hydration products. Steam-curing concrete exhibits higher strength at early age and lower shrinkage, while the standard-curing concrete has higher strength, elastic modulus, freeze-thaw resistance, carbonation and sulfate resistance than those of steam-curing concrete at later age.

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  • English

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  • Accession Number: 01551080
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 27 2015 11:21AM