TY - JOUR
T1 - Comparison on efficiency factors of F and C types of fly ashes
AU - Yildirim, Hasan
AU - Sümer, Mansur
AU - Akyüncü, Veysel
AU - Gürbüz, Emrah
PY - 2011/6
Y1 - 2011/6
N2 - Fly ashes are obtained from thermal power plants and they are pozzolanic materials, which can act as partial replacement material for both portland cement and fine aggregate. With their economical advantages and potential for improving fresh and hardened concrete performance, they have some benefits for using in concrete industry. In this study, the objective was to find the efficiency factors of Turkish C and F-type fly ashes and to compare their properties. Three different cement dosages were used (260, 320, 400 kg/m 3), two different ratios (10% and 17%) of cement reduced from the control concretes and three different ratios (depending on cement reduction ratio) of fly ash were added into the mixtures. At the ages of 28 and 90 days, compressive strength, modulus of elasticity and ultrasound velocity tests were carried out. From the compressive strength results, the k efficiency factors of C and F-type fly ashes were obtained. As a result, it is seen that efficiency factors of the concrete produced by the replacement of F and C type fly ashes with cement increase with the increase in cement dosage and concrete age.
AB - Fly ashes are obtained from thermal power plants and they are pozzolanic materials, which can act as partial replacement material for both portland cement and fine aggregate. With their economical advantages and potential for improving fresh and hardened concrete performance, they have some benefits for using in concrete industry. In this study, the objective was to find the efficiency factors of Turkish C and F-type fly ashes and to compare their properties. Three different cement dosages were used (260, 320, 400 kg/m 3), two different ratios (10% and 17%) of cement reduced from the control concretes and three different ratios (depending on cement reduction ratio) of fly ash were added into the mixtures. At the ages of 28 and 90 days, compressive strength, modulus of elasticity and ultrasound velocity tests were carried out. From the compressive strength results, the k efficiency factors of C and F-type fly ashes were obtained. As a result, it is seen that efficiency factors of the concrete produced by the replacement of F and C type fly ashes with cement increase with the increase in cement dosage and concrete age.
KW - Class C fly ash
KW - Class F fly ash
KW - Compressive strength
KW - Efficiency factor
UR - http://www.scopus.com/inward/record.url?scp=79951857780&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2010.12.009
DO - 10.1016/j.conbuildmat.2010.12.009
M3 - Article
AN - SCOPUS:79951857780
SN - 0950-0618
VL - 25
SP - 2939
EP - 2947
JO - Construction and Building Materials
JF - Construction and Building Materials
IS - 6
ER -