Economic and Environmental Geology

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Table. 4.

Table. 4.

The compressive strength of solidified matrix according to the mixing ratio of waste concrete powder, blast furnance slag, and fly ash

Sintering temperature (oC) Sintering duration (h) Mixing ratio (wt%) W/B
(Water/
Binder
ratio)
Compressive strength (MPa) References
Waste concrete powder Portland cement Blast furnace slag Fly ash Gypsum 7-day curing 28-day curing 91-day curing
700 1 97 - - - 3 0.6 2.0 1.5 3.3 Ahn and Park, 2013
92 - 5 - 2.9 5.1 6.2
92 - - 5 1.0 2.2 4.5
87 - 10 - 3.9 6.1 7.7
87 - - 10 2.2 3.2 4.8
600 1 76 - 20 - 4 0.6 2.4 4.6 - Park and Kang, 2004
- 20 2.2 4.7
1.5 20 - 3.0 4.3
- 20 3.5 4.9
2 20 - 3.6 8.3
- 20 3.2 5.4
700 1 20 - 3.0 6.6
- 20 4.4 5.6
1.5 20 - 3.3 8.0
- 20 3.4 6.1
2 20 - 2.6 8.0
- 20 3.3 7.4
Econ. Environ. Geol. 2021;54:285-97 https://doi.org/10.9719/EEG.2021.54.2.285
© 2021 Econ. Environ. Geol.