Effect of storage and curing conditions at elevated temperatures on aerogel-incorporated mortar samples based on UHPC recipe

Serina Ng*, Bjørn Petter Jelle, Yingpeng Zhen, Ólafur Haralds Wallevik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


The effect of elevated temperature during storage and curing of ultra-high performance concrete (UHPC) formulated aerogel-incorporated mortar (AIM) samples was investigated. It was found that an effective aerogel loading of 60 vol% of total bulk volume was possible for producing AIM samples with suitable thermal and mechanical properties under optimized storing and curing conditions. AIM samples with compressive strengths of up to 9 MPa was achieved and the corresponding thermal conductivity was 0.4 W/(mK). For more insulating concrete, 70 vol% aerogel was needed and AIM samples with thermal conductivity as low as 0.1 W/(mK) were cast. In general, AIM samples with strengths of up to 5 MPa can be achieved when thermal conductivities of between 0.1 and 0.2 W/(mK) is desired. The obtained results here estimates that there is potential in improving the AIM samples to produce structural and insulating concrete through modification of storing and curing conditions to achieve the desired requirements of a thermal conductivity value of <0.1 W/(mK) with a corresponding compressive strength of >20 MPa.

Original languageEnglish
Pages (from-to)640-649
Number of pages10
JournalConstruction and Building Materials
Publication statusPublished - 1 Mar 2016

Bibliographical note

Funding Information:
This work has been supported by the Research Council of Norway and several partners through the SINTEF and NTNU research projects the “Concrete Innovation Centre” ( COIN ) and “The Research Centre on Zero Emission Buildings” ( ZEB ). Tor Stæhli at SINTEF Building and Infrastructure is acknowledged for his help with miscellaneous laboratory tasks.

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

Other keywords

  • Aerogel
  • Curing
  • High temperature
  • Strength
  • Thermal conductivity


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