0
  • DE
  • EN
  • FR
  • International Database and Gallery of Structures

Advertisement

Blast furnace slag properties at different grinding times and its effect on foam concrete properties

Author(s): ORCID








Medium: journal article
Language(s): English
Published in: Stavební obzor - Civil Engineering Journal, , n. 1, v. 31
Page(s): 32-44
DOI: 10.14311/cej.2022.01.0003
Abstract:

The paper presents the blast furnace slag properties at different grinding times by the dry grinding method. The process of fine grinding blast furnace slag is prepared at different times (10 minutes, 20 minutes, 30 minutes, 40 minutes). The results indicated that the main component in BFS is the amorphous structure defined in about 25÷35 degrees (with the appearance of Akermanite at 31.1, Calcite at 29.2 and Aragonite at 26.4). The results also showed that the compressive strength and activity index of blast furnace slag increased significantly after extending the grinding time from 0-40 minutes (corresponding to compressive strength from 51.2 ÷ 7 2.1 MPa at 28 days of age and activity index of blast furnace slag from 91.92% -129.44%). The fine grinding process shows that the particle size of blast furnace slag is significantly reduced.

In addition, the paper also presents the effect of finely ground blast furnace slag in 40 minutes on foam concrete properties. Research results show that the use of finely crushed blast furnace slag by the mechanical grinding method to replace sand in foam concrete not only improves the mechanical properties such as compressive strength, flexural strength, the elastic modulus of foam concrete but also protect the environment, reduce product costs.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.14311/cej.2022.01.0003.
  • About this
    data sheet
  • Reference-ID
    10665690
  • Published on:
    04/05/2022
  • Last updated on:
    04/05/2022
 
Structurae cooperates with
International Association for Bridge and Structural Engineering (IABSE)
e-mosty Magazine
e-BrIM Magazine