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General Article

Influence of natural pozzolan and blast furnace slag on hydration and physico-mechanical properties of cement
M. Laakri1*
,
M.N. Oudjit2
,
H. Saidani-Scott3
1Research assistant, Civil engineering department, USTHB, Bab Ezzouar, Algiers, Algeria
2Professor, Civil engineering department, USTHB, Bab Ezzouar, Algiers, Algeria
3Senior lecturer, Mechanical engineering department, Bristol university, Bristol, UK
* Corresponding Author
30 September 2019. pp. 112-124
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Abstract

his study presents the hydration mechanisms and physico-mechanical characteristics of cements composites based on Portland cement, natural Pozzolan (PZ) and blast furnace slag (BFS). The Vicat test indicates a reduction in the initial setting time. X-Ray Diffraction (XRD) analysis was used to evaluate the pozzolanic reactivity of mineral additions. The curve of heat released of M20 (20% PZ, 80% cement), shows that the dormant period was shortened by a rapid resumption of hydration reactions compared to the control. The mechanical activation, combined to the thermal activation has significantly increased the strength at early and medium term. The micrographs obtained by Scanning Electron Microscopy (SEM) show greater compactness in blended cements and a change in microscopy and pore’s structure depending on the additions and curing temperature.

Keywords
cement composites
blast furnace slag
pozzolan
hydration
microstructure
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Information
  • Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
  • Publisher(Ko) :건설구조물 내구성혁신 연구센터
  • Journal Title :International Journal of Sustainable Building Technology and Urban Development
  • Volume : 10
  • No :3
  • Pages :112-124
  • Received Date : 2019-07-24
  • Accepted Date : 2019-09-30
  • DOI :https://doi.org/10.22712/susb.20190012
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