Engineering properties of alkali-activated binders by use of desulfurization slag and GGBFS

Wen Ten Kuo, Tsung Chin Hou

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

In this study, industrial by-products desulphurization slag powder (DS-P) and ground granulated blast furnace slag (GGBFS) were used as the raw materials for producing non-Portland-cement binders. Material properties and microstructures of the constituents were examined. Fresh behaviors, hardening properties and microstructures of the mortars made with these binders are also investigated. Experimental results showed that DS-P can provide sufficient alkali environment for activating the pozzolanic reactions of GGBFS. The mortar compressive strengths were shown to attain 17 MPa at 28 days of age. A linear proportion between DS-P content and required water amount is also found in the flow test. Increasing the amount of GGBFS would result in a shortened setting time; while increasing the DS-P content would gain a shorten time interval between initial and final setting. Our results suggested that the high alkali feature of DS-P can trigger the pozzolanic reactions of GGBFS mixtures for producing non-Portland-cement binders with satisfying qualities.

Original languageEnglish
Pages (from-to)229-234
Number of pages6
JournalConstruction and Building Materials
Volume66
DOIs
Publication statusPublished - 2014 Sep 15

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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