Optimization of steam-curing regime for recycled aggregate concrete incorporating high early strength cement-a parametric study

Asad Hanif, Yongjae Kim*, Muhammad Usman, Cheolwoo Park

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

This paper investigates the properties of steam cured recycled aggregate concrete (RAC), in an attempt to determine the optimum conditions of the steam-curing cycle for RAC, and incorporating high early strength cement (HESC). Varying conditions of steam curing were employed. The steam-curing cycle was set based on the peak temperature, and the duration for which the peak temperature was maintained. Three peak temperatures were used for steam curing, 50 °C, 60 °C, and 70 °C, maintained for up to two hours. The compressive strength results indicated that the steam-curing cycle employing the peak temperature of 50 °C maintained for one hour with a total duration of four hours was the optimum for strength development, both at the early and late stages of hydration. Determining the optimum steam-curing temperature and duration will help reduce the associated curing cost, thus further economizing the production cost of recycled aggregate concrete.

Original languageEnglish
Article number2487
JournalMaterials
Volume11
Issue number12
DOIs
StatePublished - 7 Dec 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 by the authors.

Keywords

  • Concrete
  • High early strength
  • Mechanical properties
  • Recycled aggregate
  • Steam curing
  • Waste recycling

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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