Crack resistance and durability-related properties of internally cured high-strength / high-performance concrete

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Internal curing technology has been developing to counteract autogenous shrinkage of High-Strength (HSC)/High-Performance (HPC) Concrete. However, by introducing weak porous material as the internal water reservoirs, strength and durability properties can be downgraded. On the other hand, cracking due to autogenous shrinkage has extensively detrimental effect on concrete durability. Thus, when durability of HSC/HPC is considered, transport properties have to be viewed in the bundle with the risk of cracking. Research on durability of internally cured concretes in general, and durability of internally cured concretes with very low water to cement ratios in particular, attracts much interest, since very little information is available in the literature in this regard. The paper reviews the existing publications in the topic. The cracking sensitivity of concrete made at water to cement ratios of 0.21 to 0.33 and internally cured by means of water-saturated lightweight aggregate of volcanic origin (pumice) was studied in this research. In parallel, resistance to chloride penetration, air permeability and sorptivity of the same concrete mixes was tested. The experimental results demonstrate that internal curing efficiency in reducing cracking sensitivity of concrete increases with the reduction of water/cement ratio, while transport-related properties of concrete are improved, or at least as good as, those of the reference concrete.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on the Durability of Concrete Structures, ICDCS 2012
Number of pages9
StatePublished - 2012
Event3rd International Conference on the Durability of Concrete Structures, ICDCS 2012 - Belfast, United Kingdom
Duration: 17 Sep 201219 Sep 2012

Publication series

NameProceedings of the 3rd International Conference on the Durability of Concrete Structures, ICDCS 2012

Conference

Conference3rd International Conference on the Durability of Concrete Structures, ICDCS 2012
Country/TerritoryUnited Kingdom
CityBelfast
Period17/09/1219/09/12

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Building and Construction
  • Civil and Structural Engineering

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