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Kinetics of UHPC strength gain at subfreezing temperatures
KTH, School of Architecture and the Built Environment (ABE), Architecture.
2018 (English)In: American Concrete Institute, ACI Special Publication, American Concrete Institute , 2018, no SP 326Conference paper, Published paper (Refereed)
Abstract [en]

Synopsis: It is well-known that cooling of fresh concrete to a subfreezing temperature interrupts the structure formation and can lead to serious damages of constructions. Most of the existing antifreeze additives reduce this destructive effect, however it should be acknowledged that the processes of cement hydration is still interrupted to an extent that the strength gain in these conditions is simply negligible. When using these admixtures, it is merely expected that concrete will not lose its integrity during the phase of cooling and that strength will be gained after the ambient temperature will reach positive values. However, in our work we aim at proving the possibility of rapid strength gain of UHPC with reduced water-cement ratio even at subfreezing temperatures. The following article presents analysis of the influence of various in-house developed admixtures on kinetics of strength gain of UHPC at negative temperatures.

Place, publisher, year, edition, pages
American Concrete Institute , 2018. no SP 326
Keywords [en]
Antifreeze admixtures, Cold weather concreting, Strength gain, Subfreezing hydration, Ultra-high-performance concrete, Water-cement ratio, Cement additives, Concrete additives, High performance concrete, Hydration, Temperature, Cold weather, Ultra high performance concretes, Strength of materials
National Category
Architecture
Identifiers
URN: urn:nbn:se:kth:diva-247458Scopus ID: 2-s2.0-85057602703OAI: oai:DiVA.org:kth-247458DiVA, id: diva2:1303029
Conference
2nd International Workshop on Durability and Sustainability of Concrete Structures, DSCS 2018, 6 June 2018 through 7 June 2018
Note

QC20190408

Available from: 2019-04-08 Created: 2019-04-08 Last updated: 2019-04-08Bibliographically approved

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Sitnikov, Vasily

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