Mechanical properties of self consolidating concrete blended with high volumes of fly ash and slag

作者：Kuder Katherine^*; Lehman Dawn; Berman Jeffrey; Hannesson Gudmundur; Shogren Rob

来源：Construction and Building Materials, 2012, 34: 285-295.

DOI：10.1016/j.conbuildmat.2012.02.034

• Self-consolidating concrete
• Fly ash
• Slag
• Compressive strength
• Chemical composition
• Efficiency
• Creep
• Elastic modulus

The effect of high volumes of two supplementary cementitious materials (SCMs) (fly ash and slag) on the mechanical performance of self-consolidating concrete (SCC) was investigated. Binary and ternary mixes were prepared replacing 60-90% of the Portland cement in the control mix (cement = 415.1 kg/m(3)). Mix designs were selected such that a wide range of CaO/(SiO2 + Al2O3) was achieved. Results show that SCC containing high volumes of SCMs have similar engineering properties (compressive strength, elastic modulus, creep, shrinkage) as conventional SCC at later ages (>= 28 day). A novel efficiency expression was developed to predict compressive strength.

• 出版日期2012-9