TY  - JOUR
AV  - none
N1  - cited By 97
SP  - 205
TI  - Effect of silica fume on the fresh and hardened properties of fly ash-based self-compacting geopolymer concrete
SN  - 16744799
EP  - 213
N2  - The effect of silica fume on the fresh and hardened properties of fly ash-based self-compacting geopolymer concrete (SCGC) was investigated in this paper. The work focused on the concrete mixes with a fixed water-to-geopolymer solid (W/Gs) ratio of 0.33 by mass and a constant total binder content of 400 kg/m3. The mass fractions of silica fume that replaced fly ash in this research were 0wt, 5wt, 10wt, and 15wt. The workability-related fresh properties of SCGC were assessed through slump flow, V-funnel, and L-box test methods. Hardened concrete tests were limited to compressive, splitting tensile and flexural strengths, all of which were measured at the age of 1, 7, and 28 d after 48-h oven curing. The results indicate that the addition of silica fume as a partial replacement of fly ash results in the loss of workability; nevertheless, the mechanical properties of hardened SCGC are significantly improved by incorporating silica fume, especially up to 10wt. Applying this percentage of silica fume results in 4.3 reduction in the slump flow; however, it increases the compressive strength by 6.9, tensile strength by 12.8 and flexural strength by 11.5. © 2013 University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.
IS  - 2
ID  - scholars3735
KW  - Binder content; Fresh and hardened properties; Fresh properties; Geopolymer concrete; Hardened concrete; Mass fraction; Partial replacement; Self-compacting
KW  -  Bending strength; Compressive strength; Concretes; Fly ash; Hardening; Inorganic polymers; Mechanical properties; Tensile strength
KW  -  Silica fume
Y1  - 2013///
A1  - Memon, F.A.
A1  - Nuruddin, M.F.
A1  - Shafiq, N.
JF  - International Journal of Minerals, Metallurgy and Materials
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877841420&doi=10.1007%2fs12613-013-0714-7&partnerID=40&md5=977c6f6c1331904f5098929607cd4217
VL  - 20
ER  -