STRENGTH AND BOND CHARACTERISTIC OF UHPC PASTES WITH QUATERNARY BINDERS
In the present research, UHPC pastes are designed with quaternary binders, namely Portland cement, slag cement with 50% of ground granulated blast slag, limestone powder and micro/nano silica, at a relatively low water-to-powder ratio of 0.2.The compressive strengths of UHPC pastes are measured and analysed after the curing age of 28 days and 56 days, respectively.The fibre-to-matrix bonding properties of UHPC pastes are characterized after 56 days.The results show that it is possible to use those quaternary binders system to design UHPC matrix with compressive strength ranging between about 140 MPa and 180 MPa at a relatively low water content.Slag and limestone powder can greatly improve the sustainability without sacrificing too much strength and fibre-to-matrix bonding force of UHPC pastes.5% micro silica contributes to higher compressive strength of UHPC pastes containing Portland cement, while 3% nano silica has higher efficiency than 5% micro silica for mixtures with slag cement.
Strength Bond characteristic Ultra-high performance concrete Quaternary binders
P.P.Li Q.L.Yu H.J.H.Brouwers
Department of the Built Environment, Eindhoven University of Technology, Eindhoven, the Netherlands
国际会议
福州
英文
337-343
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）