Shrinkage behavior of alkali-activated slag cement pastes

Vladyslav Omelchuk, Guang Ye, Rayisa Runova, Igor Rudenko

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

13 Citations (Scopus)

Abstract

Nowadays, alkali-activated cements (AACs) are the most promising alternatives to ordinary portland cement (OPC). Such cements characterized by better strength and corrosion resistance that determine improved durability of materials based on them. However, the shrinkage of AAC systems is noticeably higher compared with OPC. The purpose of this work was to study the shrinkage behavior of alkali-activated slag cement (AASC) pastes. To improve early age performance of AASCs – OPC and Ca(OH)2, as mineral additives, were added to the designed cement mixtures. The properties, like, flexural and compressive strength of cement mortars, chemical shrinkage, autogenous shrinkage and drying shrinkage of cement pastes were studied. The results showed that the chemical shrinkage, autogenous shrinkage and drying shrinkage at 28 days were between 0.064 – 0.074 ml/g, 4.5 – 7.9 mm/m and 3.3 – 4.9 mm/m, respectively. The relationship between the nature of alkaline components, the type of mineral additives and the shrinkage behavior of cements were discussed.

Original languageEnglish
Title of host publicationNon-Traditional Cement and Concrete
PublisherTrans Tech Publications
Pages45-48
Number of pages4
Volume761 KEM
ISBN (Print)9783038354406
DOIs
Publication statusPublished - 2018
Event6th International Conference Non-Traditional Cement and Concrete, 2017 - Brno, Czech Republic
Duration: 19 Jun 201722 Jun 2017
Conference number: 6

Publication series

NameKey Engineering Materials
Volume761 KEM
ISSN (Print)10139826

Conference

Conference6th International Conference Non-Traditional Cement and Concrete, 2017
CountryCzech Republic
CityBrno
Period19/06/1722/06/17

Keywords

  • Alkali-activated slag cement
  • Alkaline components
  • Mineral additives
  • Shrinkage

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