TY - GEN
T1 - An Eco-Friendly UHPC for Structural Application
T2 - RILEM-fib International Symposium on FRC, BEFIB 2020
AU - Abrishambaf, Amin
AU - Pimentel, Mário
AU - Nunes, Sandra
PY - 2021
Y1 - 2021
N2 - This paper presents and discusses experimental results on the tensile mechanical performance of a newly developed ultra-high performance cementitious material, UHPC, incorporating spent equilibrium catalyst (ECat), a waste generated by the oil refinery industry, as a supplementary cementitious material. The results are compared to a previously developed conventional UHPC. The influence of ECat on the heat of hydration in UHPC is evaluated by isothermal calorimeter under a constant temperature of 20 ℃. To determine the evolution of the tensile behaviour with time, a series of uniaxial tensile tests are performed on the specimens at different ages, i.e. 1, 3, 7, 28 and 91 days after casting. Afterwards, the fibre to matrix interfacial bond properties were characterized by executing a series of single fibre pullout tests at the age of 28 days on the steel fibres embedded in UHPCs with 0°, 30° and 60° orientation angles. The results confirmed the adequate performance of the new developed UHPC for the structural application.
AB - This paper presents and discusses experimental results on the tensile mechanical performance of a newly developed ultra-high performance cementitious material, UHPC, incorporating spent equilibrium catalyst (ECat), a waste generated by the oil refinery industry, as a supplementary cementitious material. The results are compared to a previously developed conventional UHPC. The influence of ECat on the heat of hydration in UHPC is evaluated by isothermal calorimeter under a constant temperature of 20 ℃. To determine the evolution of the tensile behaviour with time, a series of uniaxial tensile tests are performed on the specimens at different ages, i.e. 1, 3, 7, 28 and 91 days after casting. Afterwards, the fibre to matrix interfacial bond properties were characterized by executing a series of single fibre pullout tests at the age of 28 days on the steel fibres embedded in UHPCs with 0°, 30° and 60° orientation angles. The results confirmed the adequate performance of the new developed UHPC for the structural application.
KW - Fibre orientation
KW - Fibre to matrix bond properties
KW - Spent equilibrium catalyst
KW - Tensile behaviour
KW - Ultra-high performance fibre reinforced cementitious material
UR - http://www.scopus.com/inward/record.url?scp=85097230426&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-58482-5_93
DO - 10.1007/978-3-030-58482-5_93
M3 - Conference contribution
AN - SCOPUS:85097230426
SN - 9783030584818
T3 - RILEM Bookseries
SP - 1056
EP - 1067
BT - Fibre Reinforced Concrete
A2 - Serna, Pedro
A2 - Llano-Torre, Aitor
A2 - Martí-Vargas, José R.
A2 - Navarro-Gregori, Juan
PB - Springer
Y2 - 21 September 2020 through 23 September 2020
ER -